dingxinda global quality activated carbon supplier

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Developed structure of activated carbon02022-02-15 23:26:40
When it is found that this kind of activated carbon to separate the material because of adsorption is too strong and can not elute, or because it is difficult to elute caused by the elution solvent is too large, the flow is not concentrated, you can use the third activated carbon. activated charcoal suppliers & manufacturers  Sometimes a combination of three activated carbons can be used to separate more complex natural pharmaceutical components. For example, the sample to be separated is first passed through a third column of activated carbon, on which the component with the strongest adhesion to the activated carbon is adsorbed. The unadsorbed material then passes through the second activated carbon, the less adsorbed material is adsorbed on the second column, and the unadsorbed material finally passes through the first activated carbon.www.wyactivatedcarbon.com   Thus, through three columns in turn, on which the adsorbed substances are eluted with appropriate eluents, it is possible to obtain a better separation of the very complex natural medicinal constituents. Because of the fine particles of powdered activated carbon, it is inconvenient to operate, so in the practical application process, generally try not to use the first kind of active carbon. No powdered activated carbon is another important reason for the adsorption of powdered activated carbon is too strong, there are many substances adsorbed on it is very difficult to elute, usually will be used after the adsorbent deactivation.  [View Answers]
Activated carbon material02022-02-15 23:26:12
Activated carbon is a porous amorphous powder with crystalline properties. By X - diffraction analysis, the structure of activated carbon is composed of carbon atoms with covalent bonds into a hexagonal shape (except the surface), and in two or more layers stacked into a plate, and the lattice of graphite is almost the same, but the plate of graphite is more closely combined.gold recovery from activated carbon  Activated carbon has adsorption effect on gas or solute of some solution, and some are adsorbed on the surface of carbon, and some are adsorbed inside the structure of carbon.activated carbon china manufacturers   The size of the adsorption force is related to the total surface area of the activated carbon, the finer the carbon particles, the greater the total surface area, the stronger the adsorption force, and vice versa. The same fineness of activated carbon, the strength of its adsorption and the structure of the adsorbed material. In general, all compounds with conjugate double bond structure, activated carbon is easy to adsorption, the more often double bond, activated carbon on its adsorption capacity is greater. This is mainly because activated carbon has a hexagonal structure formed by the combination of covalent bonds (with large bond structure properties of aromatic ring), which is easy to be mutual with common double bonds. Role. Some pigments, most of which have a strategic structure, are easy to be adsorbed on the carbon. In the process of recrystallization, activated carbon decolorization is added to remove impurities. This is the reason. For the same skeleton compounds or the same type of compounds, the introduction of amine, hydroxyl, carboxyl and other polar groups will often increase the adsorption of activated carbon to it. The adsorption power of activated carbon on the material is related to the structure of the adsorbed material and the solvent used. The adsorption capacity is usually strongest in water, followed by ethanol and acetone, and weaker in other solvents. Therefore, the decolorization with activated carbon is the best in aqueous solution, followed by ethanol and acetone, and almost no decolorization ability in other organic solvents. The size of the adsorption force of activated carbon on the solute in the solution, in addition to the size of the activated carbon and the structure of the adsorbed matter, must also consider the interaction between solute and solvent, that is, must also consider the size of the solute solubility of the solvent.  [View Answers]
Abrasive polishing process02022-02-15 22:06:49
In this study, the activated carbon was modified by nitric acid oxidation, sodium hydroxide impregnation, nitrogen protected high temperature reduction and other methods. Activated carbon before and after modification was characterized by specific surface area measurement, scanning electron microscope observation, Fourier transform infrared spectroscopy measurement and Boehm functional group titration.activated charcoal suppliers & manufacturers  The results show that there are -OH, -C=O, -C-OH and other functional groups on the surface of activated carbon.www.wyactivatedcarbon.com  The surface functional group structure and specific surface area of the modified GAC were changed, and the changes of the surface functional group structure and specific surface area of the activated carbon prepared by different modification methods were different. The specific surface area of activated carbon modified by nitric acid increased from 925.45m'lg to 960.52m2/g, and the number of acid functional groups (carboxyl group, phenolic hydroxyl group) increased from 0.23 mmol/g to 0.36 mmol/g, while the number of acid functional groups and specific surface area of activated carbon modified by reduction decreased.  [View Answers]
Hue refining capacity of activated carbon02022-02-15 22:06:18
Fir chip as the raw materials, H - POs as activator, using single factor analysis and orthogonal experimental design method, this paper discusses the influence granular activated carbon pore structure and the iodine adsorption value, methylene blue and strength of various preparation factors, determine the optimum process conditions of preparation of granular activated carbon phosphoric acid, phosphoric acid concentration is 70%, dipping 180%, kneading temperature is 170 ℃, for 60 min kneading time, activation temperature is 350 ℃, the activation time of 210 min.gold recovery from activated carbon  The iodine adsorption value, methylene blue adsorption value, strength and BET specific surface area of GAC were 1020.04mGG, 225mg/g, 88.73% and 1486.48m2/g respectively.activated carbon china manufacturers  The experimental results show that the impregnation ratio and carbon activation temperature have great effects on the adsorption performance of GAC, while the kneading temperature and impregnation ratio have great effects on the strength of GAC. Because the strength of GAC decreases with the increase of impregnation ratio, and the decrease range is large, so the preparation of GAC with compound activator is proposed. The results show that the composite activator can reduce the impregnation ratio of phosphoric acid to wood chips and improve the strength of granular activated carbon. At the same time, the composite activator can improve the adsorption performance of GAC. Therefore, granular activated carbon with good adsorption performance and high strength can be prepared by this method.  [View Answers]
Activated carbon sales02022-02-15 22:02:13
The iodine adsorption value, methylene blue adsorption value, strength and BET specific surface area of GAC were 1020.04mGG, 225mg/g, 88.73% and 1486.48m2/g respectively. activated charcoal suppliers & manufacturers  The experimental results show that the impregnation ratio and carbon activation temperature have great effects on the adsorption performance of GAC, while the kneading temperature and impregnation ratio have great effects on the strength of GAC.www.wyactivatedcarbon.com   Because the strength of GAC decreases with the increase of impregnation ratio, and the decrease range is large, so the preparation of GAC with compound activator is proposed. The results show that the composite activator can reduce the impregnation ratio of phosphoric acid to wood chips and improve the strength of granular activated carbon. At the same time, the composite activator can improve the adsorption performance of GAC. Therefore, granular activated carbon with good adsorption performance and high strength can be prepared by this method.  [View Answers]
Ding Xinda activated carbon refining manufacturing02022-02-15 22:00:54
1. Combined with Zeta potential, sedimentation experiment, viscosity measurement and other methods, the influence of various dispersants on CEO and slurry suspension effect was studied. The results showed that the formula with good stability was the appropriate concentration of mixed dispersant (NAP +SBN) or (NAP +PAM+SBN).gold recovery from activated carbon  2. The removal rate of CEOZ slurry prepared with mixed dispersant (NAP +PAM+SBN) in the processing of K9 glass by MASJP was higher than that of other mixed dispersants.activated carbon china manufacturers   By comparing the processing effect of MASJP with and without mixed additives, it is found that the processing effect of MASJP with mixed additives (NAP +PAM+SBN) has higher surface quality, which can significantly reduce the interface area between the polished area and the unpolished surface and increase the smooth surface as much as possible.3. Combining online observation and single factor method, the formation process of the surface features of the polished area was studied. The experimental results showed that the surface morphology of the polished area showed a W-shaped bowl structure in the vertical jet machining, and an eccentric bowl structure in the crescent shape in the oblique jet machining.Compared with the abrasive water jet machining effect, it is found that the W shape and crescent shape characteristics of the polishing region of MASJP are relatively flat, the smooth surface is larger and the surface quality is higher. 4. When applying nozzle with different outlet shapes in MASJP, it is found that the fluid ejected from the cylindrical nozzle flows out along the direction of the jet and does not disperse. The processing area of the fan-shaped nozzle is large, the polishing area is approximately a rectangle, and the removal depth near the nozzle is larger.Hollow conical nozzle processing finished parts, the polishing area formed a hollow circle, the central part of the removal of less, the circumference of the removal of deep;The removal depth of the polishing area decreases gradually from the center to the circumference after the finished piece is processed by the solid conical nozzle. 5, the workpiece surface profile and material removal depth with the selection of polishing slurry composition changes.With the increase of abrasive concentration, the material removal depth increases, which is roughly in a proportional relationship.With the increase of abrasive particle size, the material removal depth also increases.  [View Answers]
Activated carbon refining manufacturing02022-02-15 21:49:48
The polishing slurry and processing technology of micro-abrasive slurry jet were studied. Through the analysis of the physical and chemical properties of additives and their state changes under the jet, the comprehensive effects of the types and proportions of different additives, as well as the types, proportions and particle sizes of abrasive on the formation of uniform slurry, the promotion of good abrasive dispersion and the jet polishing effect were explored.www.wyactivatedcarbon.com   The effects of different types of nozzles, polishing slurry, jet distance, jet time, different initial RA, jet pressure and jet Angle on the surface profile, material removal depth and surface quality of the workpiece were studied through polishing experiments. The local Ra of the optical glass surface is in the range of 20nm~50nm by MASJP, and the lowest Ra is 10.24nm. activated charcoal suppliers & manufacturers  1. Combined with Zeta potential, sedimentation experiment, viscosity measurement and other methods, the influence of various dispersants on CEO and slurry suspension effect was studied. The results showed that the formula with good stability was the appropriate concentration of mixed dispersant (NAP +SBN) or (NAP +PAM+SBN).  [View Answers]
Ding Xinda activated carbon deodorization02022-02-15 21:48:01
1. Combined with Zeta potential, sedimentation experiment, viscosity measurement and other methods, the influence of various dispersants on CEO and slurry suspension effect was studied. The results showed that the formula with good stability was the appropriate concentration of mixed dispersant (NAP +SBN) or (NAP +PAM+SBN). gold recovery from activated carbon  2. The removal rate of CEOZ slurry prepared with mixed dispersant (NAP +PAM+SBN) in the processing of K9 glass by MASJP was higher than that of other mixed dispersants. By comparing the processing effect of MASJP with and without mixed additives, it is found that the processing effect of MASJP with mixed additives (NAP +PAM+SBN) has higher surface quality, which can significantly reduce the interface area between the polished area and the unpolished surface and increase the smooth surface as much as possible.3. Combining online observation and single factor method, the formation process of the surface features of the polished area was studied. The experimental results showed that the surface morphology of the polished area showed a W-shaped bowl structure in the vertical jet machining, and an eccentric bowl structure in the crescent shape in the oblique jet machining.Compared with the abrasive water jet machining effect, it is found that the W shape and crescent shape characteristics of the polishing region of MASJP are relatively flat, the smooth surface is larger and the surface quality is higher. 4. When applying nozzle with different outlet shapes in MASJP, it is found that the fluid ejected from the cylindrical nozzle flows out along the direction of the jet and does not disperse. The processing area of the fan-shaped nozzle is large, the polishing area is approximately a rectangle, and the removal depth near the nozzle is larger.Hollow conical nozzle processing finished parts, the polishing area formed a hollow circle, the central part of the removal of less, the circumference of the removal of deep;The removal depth of the polishing area decreases gradually from the center to the circumference after the finished piece is processed by the solid conical nozzle. 5, the workpiece surface profile and material removal depth with the selection of polishing slurry composition changes.With the increase of abrasive concentration, the material removal depth increases, which is roughly in a proportional relationship.With the increase of abrasive particle size, the material removal depth also increases.  [View Answers]
Ding Xinda activated carbon vaporization02022-02-14 22:13:13
Performance and its influencing factors. The results show that the increase of adsorption time, pH and the amount of adsorbent will improve the adsorption effect of the modified activated carbon. activated charcoal suppliers & manufacturers  Based on the experimental data of adsorption of Zn2' and Cd by modified activated carbon and the adsorption principle, the mechanism and kinetic law of adsorption of heavy metal ions by modified activated carbon were studied. The results show that the adsorption isotherms of Zn2' and Cd by modified activated carbon are in good agreement with the Langmuir and Freundlich adsorption models.www.wyactivatedcarbon.com  By fitting the kinetic equation of Zn2 adsorption with modified activated carbon, it was found that the first 30min of the adsorption reaction was in line with the Lagergren quasi-first-order reaction, and the second order reaction was in line with the latter. The adsorption of Cd by modified activated carbon was a Lagergren quasi-first order reaction in the first 20 minutes. The reaction after adsorption for 20min belongs to the Lagergren quasi-second order reaction.  [View Answers]
Treatment and purification effect of activated carbon on various flue gas02022-02-14 22:12:39
Therefore, it is of practical significance to explore and seek an effective pretreatment method. In this paper, Fenton oxidation and activated carbon adsorption were combined to pretreat the wastewater from natural gas purification maintenance, in order to improve the subsequent operation efficiency of UASB.powdered activated carbon (pac)  This experiment by orthogonal test to determine the Fenton reagent oxidation first preliminary operating conditions, on this basis, carries on the single factor analysis method, the main factors influencing the Fenton reagent treatment effect for each study, investigation of its influence on wastewater COD removal rate, the results show that Fenton oxidation method the optimum operating conditions for natural gas purification overhaul wastewater treatment: HO2 dosing quantity 0.3 mol/L, n (HO)/n (Fe) = systematically, initial pH = 3, reaction temperature 70 ℃, reaction time, 40 min.activated carbon manufacturers  Under these conditions, the COD removal rate reached 78.6%, the BOD /COD value increased from 0.168 to 0.353-0.403, and the biodegradability was greatly improved. If Ho is added in three times and the interval time is 10min, the COD removal rate will increase from 78.6% to 80.3%. Therefore, it can be seen that H0: batch addition will further improve the reaction effect. After Fenton oxidation treatment, wastewater and activated carbon adsorption, this topic activated carbon adsorption experiments using single factor method, examines different PH, activated carbon adsorption dosing quantity and the influence of adsorption time of wastewater COD removal rate, the results show that after Fenton oxidation treatment without having to adjust PH value, according to the 20 g/L after adding the activated carbon reaction 3 h at room temperature, COD removal rate was 47.3%,, BOD/COD value of 0.438 to 0.625. The research in this paper has laid a theoretical foundation and provided an experimental basis for the practical application of Fenton oxidation and activated carbon adsorption in the pretreatment of natural gas purification maintenance wastewater in UASB reactor.  [View Answers]
Ding Xinda activated carbon by steam02022-02-14 22:09:15
In order to further understand the effect of the pore structure of activated carbon on the filtration efficiency of cigarette mainstream smoke and the difference of the filtration efficiency between gaseous compounds and granular compounds, the adsorption selectivity of activated carbon on two important harmful components (sputum-based compounds and phenolic compounds)activated carbon manufacturers   in cigarette mainstream smoke was also investigated. It was found that there was a significant correlation between the filtration efficiency of seven phenolic substances in the mainstream smoke of cigarettes and the filtration efficiency of particulate matter. The filtration efficiency of activated carbon for several monophenols was significantly higher than that of bisphenol, in which o-cresol had the highest filtration efficiency, followed by phenol. Activated carbon has a better adsorption effect on sputum-based compounds in the mainstream smoke of cigarettes. The larger the specific surface area of activated carbon is, the higher the filtration efficiency is. When the specific surface area is similar, the smaller pore size of activated carbon has a higher filtration efficiency. The activated carbon has the highest filtering efficiency for crotonaldehyde and the lowest filtering efficiency for acetaldehyde. The filtration efficiency of activated carbon for gas phase composition was significantly higher than that for granular phase composition. When the addition amount of activated carbon for six different pore structures was 23 mg/ branch, the total granular phase could be reduced by 3.75%-12.49%. The total phenolic compounds could be reduced by 2.92% ~ 13.68%. The total amount of sputum-based compounds could be reduced by 9.51% ~ 35.05%.  powdered activated carbon (pac)  [View Answers]
How to make better granular activated carbon02022-02-14 22:08:34
By single factor experiment, the optimal conditions of carbon production were obtained as follows: pyrolysis temperature 600℃, activator concentration 4 mol · L', pyrolysis time 1.5h, solid-liquid ratio 1:2.5.Orthogonal experiment showed that the influence of each factor was as follows: pyrolysis temperatureIs the activator concentration Pyrolysis time >Solid-liquid ratio.(4) the main performance of PAC is basically equivalent to 8818 type activated carbon; activated charcoal suppliers & manufacturers  The concentrations of heavy metals in activated carbon leaching solution of sludge were all qualified.Compared with domestic and foreign research reports, the quality of PAC is in the middle level.(5) Compared with SAC, the specific surface area of PAC is larger, up to 636.8m2·g'. PAC is mainly mesoporous, but also contains some micropores. The adsorption/desorption isotherm shows that PAC is activated carbon with parallel wall slit pore structure.  www.wyactivatedcarbon.com  [View Answers]
Experimental study on solvent regeneration of activated carbon02022-02-13 22:49:01
"Activated carbon production and construction project" belongs to zhoukou xyz co., ltd. plans in zhoukou economic development zone (new) projects, proposed the project the total area of 25072.53 square meters about 37.59 acres), is expected to total investment of 95.0984 million yuan, including: investment in fixed assets of 83.8144 million yuan, flow capital of 11.284 million yuan, is expected to comprehensive income for 94.17 million yuan. activated charcoal suppliers & manufacturers  The economic situation this year is generally characterized by a steady but positive trend, and more positive changes have taken place in economic development.gold recovery from activated carbon  Stability is reflected in the fact that the economy performed within an appropriate range, growth became more stable, and the quality and performance of the economy continued to improve. The economic structure has continued to improve. Innovation is playing an increasingly important role in underpinning development. The service sector accounts for a larger share of the economy, and consumption is contributing more to growth. Stability is also reflected in new breakthroughs in reform and opening up.  [View Answers]
Abrasive polishing process02022-02-13 22:48:32
1. Combined with Zeta potential, sedimentation experiment, viscosity measurement and other methods, the influence of various dispersants on CEO and slurry suspension effect was studied. The results showed that the formula with good stability was the appropriate concentration of mixed dispersant (NAP +SBN) or (NAP +PAM+SBN).gold recovery from activated carbon  2. The removal rate of CEOZ slurry prepared with mixed dispersant (NAP +PAM+SBN) in the processing of K9 glass by MASJP was higher than that of other mixed dispersants.activated carbon china manufacturers  By comparing the processing effect of MASJP with and without mixed additives, it is found that the processing effect of MASJP with mixed additives (NAP +PAM+SBN) has higher surface quality, which can significantly reduce the interface area between the polished area and the unpolished surface and increase the smooth surface as much as possible.3. Combining online observation and single factor method, the formation process of the surface features of the polished area was studied. The experimental results showed that the surface morphology of the polished area showed a W-shaped bowl structure in the vertical jet machining, and an eccentric bowl structure in the crescent shape in the oblique jet machining.Compared with the abrasive water jet machining effect, it is found that the W shape and crescent shape characteristics of the polishing region of MASJP are relatively flat, the smooth surface is larger and the surface quality is higher. 4. When applying nozzle with different outlet shapes in MASJP, it is found that the fluid ejected from the cylindrical nozzle flows out along the direction of the jet and does not disperse. The processing area of the fan-shaped nozzle is large, the polishing area is approximately a rectangle, and the removal depth near the nozzle is larger.Hollow conical nozzle processing finished parts, the polishing area formed a hollow circle, the central part of the removal of less, the circumference of the removal of deep;The removal depth of the polishing area decreases gradually from the center to the circumference after the finished piece is processed by the solid conical nozzle. 5, the workpiece surface profile and material removal depth with the selection of polishing slurry composition changes.With the increase of abrasive concentration, the material removal depth increases, which is roughly in a proportional relationship.With the increase of abrasive particle size, the material removal depth also increases.  [View Answers]
The development of activated carbon grinding02022-02-13 22:41:21
Wooden raw materials mainly include walnut shell 6.7, wood I8]I9], fruit shell [10.11], bamboo [213], crop straw 14.15], carbon containing waste residue 16][I7, etc. In addition, good quality granular activated carbon can also be prepared by separating charcoal powder 8 with dust removal ash and waste polystyrene foamgold recovery from activated carbon  Preparation method of granular activated carbon is mainly physical activation method [12 and chemical activation method [3.821]. Physical activation method is to dry, carbonized materials will be first, and then carbonized material crushing, then add to the crushing carbonized material, the binder and its mixing, forming and drying grain charcoal, then the granular activated carbon under a certain temperature, the final results of dry granular activated carbon products. The method commonly used activation main gas water vapor and carbon dioxide [20] [l ⒂ 5]. The physical activation method is characterized by high activation temperature (generally at about 900 ℃), the equipment investment is large, step trival, But the pollution to the environment is relatively small.activated carbon china manufacturers  Chemical activation method is to mix raw materials with chemicals in a certain proportion, impregnation for a period of time, kneading and plasticizing at an appropriate temperature, and then carbonization and activation are completed in one step. The chemicals commonly used are ZNC12, H5PO and KOH. At present, more research is done on H; PO4 activation method, the technological process is shown in Figure 1-2. Chemical activation process is characterized by low activation temperature (generally 400-600℃), easy to adjust the pore structure of the product. However, there are also some disadvantages :(1) it is highly corrosive to equipment; (2) it pollutes the environment, etc., which makes the chemical method limited to a certain extent. There are many researches on activation by adding H3P04 at home and abroad. In China, the development and research work of preparing activated carbon by using phosphoric acid method with wood chips as raw material has been carried out since the end of 1980s,It has been successfully put into industrial application in the 1990s,The mesopore (transition pore) structure of products produced by phosphoric acid activation method is well developed and has wide application fields.  [View Answers]
Activated carbon screening drying sales02022-02-13 22:40:25
Science and the project feasibility study report based on the in-depth market supply and demand analysis, the future price forecasting, the resources supply, construction scale, process route, equipment selection, environmental impact, energy conservation and emissions reduction, investment estimation and fund-raising, profitability and other aspects of scientific research, from the Angle of market, technology and economy, engineering project study and comparative analysis, and after the completion of the project have made the financial, economic and social environment for scientific forecast, for the project decision-making provides a fair and reliable, scientific investment advice. activated charcoal suppliers & manufacturers  "Activated carbon production and construction project" belongs to zhoukou xyz co., ltd. plans in zhoukou economic development zone (new) projects, proposed the project the total area of 25072.53 square meters about 37.59 acres), is expected to total investment of 95.0984 million yuan, including: investment in fixed assets of 83.8144 million yuan, flow capital of 11.284 million yuan, is expected to comprehensive income for 94.17 million yuan. The economic situation this year is generally characterized by a steady but positive trend, and more positive changes have taken place in economic development.www.wyactivatedcarbon.com  Stability is reflected in the fact that the economy performed within an appropriate range, growth became more stable, and the quality and performance of the economy continued to improve. The economic structure has continued to improve. Innovation is playing an increasingly important role in underpinning development. The service sector accounts for a larger share of the economy, and consumption is contributing more to growth. Stability is also reflected in new breakthroughs in reform and opening up.  [View Answers]
Activated carbon screening drying02022-02-13 22:39:24
Wooden raw materials mainly include walnut shell 6.7, wood I8]I9], fruit shell [10.11], bamboo [213], crop straw 14.15], carbon containing waste residue 16][I7, etc. In addition, good quality granular activated carbon can also be prepared by separating charcoal powder 8 with dust removal ash and waste polystyrene foam Preparation method of granular activated carbon is mainly physical activation method [12 and chemical activation method [3.821]. Physical activation method is to dry, carbonized materials will be first, and then carbonized material crushing, then add to the crushing carbonized material, the binder and its mixing, forming and drying grain charcoal, then the granular activated carbon under a certain temperature, the final results of dry granular activated carbon products. The method commonly used activation main gas water vapor and carbon dioxide [20] [l ⒂ 5]. The physical activation method is characterized by high activation temperature (generally at about 900 ℃), the equipment investment is large, step trival, But the pollution to the environment is relatively small.gold recovery from activated carbon  Chemical activation method is to mix raw materials with chemicals in a certain proportion, impregnation for a period of time, kneading and plasticizing at an appropriate temperature, and then carbonization and activation are completed in one step.activated carbon china manufacturers   The chemicals commonly used are ZNC12, H5PO and KOH. At present, more research is done on H; PO4 activation method, the technological process is shown in Figure 1-2. Chemical activation process is characterized by low activation temperature (generally 400-600℃), easy to adjust the pore structure of the product. However, there are also some disadvantages :(1) it is highly corrosive to equipment; (2) it pollutes the environment, etc., which makes the chemical method limited to a certain extent. There are many researches on activation by adding H3P04 at home and abroad. In China, the development and research work of preparing activated carbon by using phosphoric acid method with wood chips as raw material has been carried out since the end of 1980s,It has been successfully put into industrial application in the 1990s,The mesopore (transition pore) structure of products produced by phosphoric acid activation method is well developed and has wide application fields.  [View Answers]
Activated carbon adsorption treatment of waste gas02022-02-13 22:33:58
Wooden raw materials mainly include walnut shell 6.7, wood I8]I9], fruit shell [10.11], bamboo [213], crop straw 14.15], carbon containing waste residue 16][I7, etc. In addition, good quality granular activated carbon can also be prepared by separating charcoal powder 8 with dust removal ash and waste polystyrene foampowdered activated carbon (pac)  Preparation method of granular activated carbon is mainly physical activation method [12 and chemical activation method [3.821]. Physical activation method is to dry, carbonized materials will be first, and then carbonized material crushing, then add to the crushing carbonized material, the binder and its mixing, forming and drying grain charcoal, then the granular activated carbon under a certain temperature, the final results of dry granular activated carbon products. The method commonly used activation main gas water vapor and carbon dioxide [20] [l ⒂ 5]. The physical activation method is characterized by high activation temperature (generally at about 900 ℃), the equipment investment is large, step trival, But the pollution to the environment is relatively small.activated carbon manufacturers  Chemical activation method is to mix raw materials with chemicals in a certain proportion, impregnation for a period of time, kneading and plasticizing at an appropriate temperature, and then carbonization and activation are completed in one step. The chemicals commonly used are ZNC12, H5PO and KOH. At present, more research is done on H; PO4 activation method, the technological process is shown in Figure 1-2. Chemical activation process is characterized by low activation temperature (generally 400-600℃), easy to adjust the pore structure of the product. However, there are also some disadvantages :(1) it is highly corrosive to equipment; (2) it pollutes the environment, etc., which makes the chemical method limited to a certain extent. There are many researches on activation by adding H3P04 at home and abroad. In China, the development and research work of preparing activated carbon by using phosphoric acid method with wood chips as raw material has been carried out since the end of 1980s,It has been successfully put into industrial application in the 1990s,The mesopore (transition pore) structure of products produced by phosphoric acid activation method is well developed and has wide application fields.  [View Answers]
Overview of preparation methods of granular activated carbon02022-02-13 22:32:09
In domestic has been eliminated. Specific surface area test unified the multi-point BET method at home and abroad, specific surface area measurement standards are developed at home and abroad is based on BET test method, please see our national standard (GB/T 19587-2004) - gas adsorption BET principle of solid material specific surface area measurement methods. Specific In domestic has been eliminated. Specific surface area test unified the multi-point BET method at home and abroad, specific surface area measurement standards are developed at home and abroad is based on BET test method, please see our national standard (GB/T 19587-2004) - gas adsorption BET principle of solid material specific surface area measurement methods. Specific surface area testing is actually the more time-consuming jobs, as the adsorption capacity of sample is different, some sample testing may need to spend the whole dayTime, if the test process is not fully automated, the tester can not leave at any time, and should be highly focused, observe the dashboard, control the knob, a little careless will lead to the failure of the test process, which will waste a lot of valuable time of the tester.powdered activated carbon (pac)  F - Sorb 2400 specific surface tester is really able to BET method detection instruments (both direct comparison method), the more important F - Sorb 2400 specific surface tester is by far the only specific surface area of the fully automated intelligent testing equipment, the test results with the international high consistency, the stability is very good also, at the same time reduce the human error, improve accuracy test results.activated carbon manufacturers  sample is different, some sample testing may need to spend the whole dayTime, if the test process is not fully automated, the tester can not leave at any time, and should be highly focused, observe the dashboard, control the knob, a little careless will lead to the failure of the test process, which will waste a lot of valuable time of the tester. F - Sorb 2400 specific surface tester is really able to BET method detection instruments (both direct comparison method), the more important F - Sorb 2400 specific surface tester is by far the only specific surface area of the fully automated intelligent testing equipment, the test results with the international high consistency, the stability is very good also, at the same time reduce the human error, improve accuracy test results.  [View Answers]
Insoluble adsorption of activated carbon02022-02-11 22:52:51
CO, the activator, the activation of the burning loss rate is large. However, the pore structure of activated carbon was not developed, indicating that the newly formed potassium carbonate in the pore channels was more likely to react with carbon during the activation process of potassium hydroxide, and the pore structure was further developed. According to the standard Gibbs free energy of the reaction, K· Co (or K;O) direct reaction with carbon is difficult to be carried out at the activation temperature of 730℃, indicating that they react with -CH- and -CHZ - in petroleum coke and play an activation role.The elemental potassium generated from the activation reaction intercalated and activated the petroleum coke, and the specific surface area of the activated product reached 98m'g1.XRD analysis showed that there were potassium to graphite intercalated compounds in the activated product.According to the study results of activation mechanism, the mixing of additive N can improve the dispersion of alkali and the activation of additive N at high temperature to improve the activation effect.Activated carbon with a yield of 68% and a specific surface area of 2532m'g can be obtained under the conditions of alkali-coke ratio of 3:1, activation temperature of 730℃ and activation time of 30 minutes.At the same time, the amount of hydrogen produced in the activation reaction is large, reaching 38cm'g 'min', and hydrogen can be separated and purified.activated carbon china manufacturers   Thus, a one-step process for the preparation of activated carbon with high specific surface area was proposed.Compared with the conventional method, the process reduces the production cost, shortens the production time, saves energy, and lays a foundation for further industrial production.The prepared petroleum coke based activated carbon was used as the carrier.The catalyst supported by Ni-Mo has similar hydrodesulfurization activity with commercial catalysts. The DBT conversion rate is more than 98% at 290℃ and the catalyst has high stability.The pore size distribution of petroleum coke based activated carbon with high specific surface area is mostly between 1.0~ 2.0nm. The methane storage experiment using this sample shows that it has a high methane storage performance: at 1.4 MPa, room temperature, the mass adsorption capacity of methane is 0.112 Gg gold recovery from activated carbon  [View Answers]

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