Activated carbon increases with molecular weight and activated carbon point related questions

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Activated carbon increases with molecular weight and activated carbon point02021-09-13 01:05:58
The purification efficiency of activated carbon adsorption method is 99.2%~99.3%. For the treatment of large air volume and low concentration of organic waste gas, it is agreed that this method is the most mature and reliable technology at home and abroad, but the T art process is too long, the operation cost is high, and it is often more difficult to need a stable steam source. In view of these problems, combined with the characteristics of this graduation design and only body requirements, the use of activated carbon fixed bed adsorption system for industrial organic waste gas purification, the selection of honeycomb activated carbon as adsorbent.The process system is compact and integrated with adsorption and desorption.www.powdered-activated-carbon.com  The waste gas produced in the production process, mainly of benzene, toluene, xylene, etc., according to the nature of benzene class, this scheme adopts the active carbon as adsorbent to absorb the waste gas, the adsorption bed configuration 2 sets of above commonly, use rotation, when one adsorption bed adsorption of organic adsorption amount of reach regulation, change to another Ⅰ adsorption bed for adsorption purification operation, at the same time to take off one in front of the adsorption bed with regeneration.Desorption is carried out by heating under the action of additional steam, and most of the hotgas released by the tail gas is used for desorption and regeneration of adsorbent in the adsorption bed to achieve the utilization of waste heat.The waste gas volatilized from production is sent to the adsorption tower by centrifugal fan with activated carbon as adsorbent. The gas in the tower is processed through the activated carbon filter layer from right to left and from bottom to top, and the purified gas is discharged into the atmosphere through the exhaust pipe. pelletized activated carbon 
The molecular weight of activated carbon increases02021-09-14 01:05:34
The purification efficiency of activated carbon adsorption method is 99.2%~99.3%. For the treatment of large air volume and low concentration of organic waste gas, it is agreed that this method is the most mature and reliable technology at home and abroad, but the T art process is too long, the operation cost is high, and it is often more difficult to need a stable steam source.https://www.granular-activated-carbon.com  In view of these problems, combined with the characteristics of this graduation design and only body requirements, the use of activated carbon fixed bed adsorption system for industrial organic waste gas purification, the selection of honeycomb activated carbon as adsorbent.The process system is compact and integrated with adsorption and desorption.coal based granular activated carbon  The waste gas produced in the production process, mainly of benzene, toluene, xylene, etc., according to the nature of benzene class, this scheme adopts the active carbon as adsorbent to absorb the waste gas, the adsorption bed configuration 2 sets of above commonly, use rotation, when one adsorption bed adsorption of organic adsorption amount of reach regulation, change to another Ⅰ adsorption bed for adsorption purification operation, at the same time to take off one in front of the adsorption bed with regeneration.Desorption is carried out by heating under the action of additional steam, and most of the hotgas released by the tail gas is used for desorption and regeneration of adsorbent in the adsorption bed to achieve the utilization of waste heat.The waste gas volatilized from production is sent to the adsorption tower by centrifugal fan with activated carbon as adsorbent. The gas in the tower is processed through the activated carbon filter layer from right to left and from bottom to top, and the purified gas is discharged into the atmosphere through the exhaust pipe. 
Activated carbon increases with molecular weight02021-09-13 00:54:37
The kinetic activity value of adsorbent is the main basis for the design of adsorption system.https://www.granular-activated-carbon.com  The adsorption rateThe adsorption process often takes a long time to reach equilibrium, and the contact time is limited in the actual production process.Therefore, the amount of adsorption depends on the adsorption rate, and the adsorption rate is related to the adsorption process, the adsorption process can be divided intoThe adsorption process often takes a long time to reach equilibrium, and the contact time is limited in the actual production process.Therefore, the amount of adsorption depends on the adsorption rate, and the adsorption rate is related to the adsorption process, which can be divided into the following steps (1) External diffusion, the adsorbate from the main air flow through the air film around the particles to the outer surface of the adsorbent; (2) Internal diffusion, the adsorbate from the outer surface through micropores to the surface of the adsorbent microporescoal based granular activated carbon  (3) adsorption, the adsorbent reached the microporous surface of the adsorbent is adsorbedhttps://www.granular-activated-carbon.com/  (4) The desorbed adsorbate diffuses to the main body of the gas phase through internal and external diffusionPhysical adsorption process is generally controlled by internal and external diffusion, chemical adsorption is controlled by both surface dynamics and internal and external diffusion.Because of the complexity of the adsorption process and many influencing factors, it is difficult to derive the rate theoretically, so it is generally determined by experience or model experiment.wear resistance: that is, wear resistance or abrasion resistance. These mechanical properties directly affect the application of activated carbon, for example: density affects the size of the container; The thickness of powder carbon affects filtration; The distribution of particle size affects the fluid resistance and pressure drop. Fragmentation affects the service life of activated carbon and regeneration of waste carbon.  
The smaller molecular weight of activated carbon increases02021-10-07 00:05:32
In view of the characteristics of large amount of matter and high content of benzene organic matter in gas, the method of removing these substances is studied and the solution is given. In this study, the concentration of benzene, naphthalene and ash in gas before purifying feed-gas compressor was determined by chromatograph, picric acid titration and weighing method respectively. According to the measured values, the experimental flow was designed, and coke column and activated carbon column were made by themselves.https://www.granular-activated-carbon.com/  The isobarisothermal adsorption properties of activated carbon at different temperatures, at different pressures and at different flow rates were determined by using the gas produced in the system as samples.coal based activated carbon factory  The adsorption effluent curve of benzene by activated carbon was plotted. The effects of different temperature on the regeneration performance of activated carbon under static environment, the effects of steam at different temperature on the regeneration performance of activated carbon under dynamic environment and the effects of nitrogen at different temperature on the regeneration performance of activated carbon under dynamic environment were studied. The experimental results showed that high pressure and low temperature were beneficial to the adsorption, and the flow rate had little effect on the equilibrium adsorption capacity in the range of experimental flow rate. The adsorption capacity of benzene by activated carbon in the experiment was 150~170mg/g under operating conditions. At the same time, the filtration and adsorption properties of coke were tested. The experiment shows that the adsorption performance of the test coke on benzene is very weak, can not be used as the nitrogen adsorbent, but the coke filter and adsorption performance of ash and naphthalene is very good, the content of naphthalene and ash after the gas through the coke column completely meet the design requirements. The results show that the combined use of coke and activated carbon in the gas system can completely achieve the purpose of removing benzene, naphthalene and ash. According to the above research results, a coke filter was designed. The application of the equipment solved the problems that the feedstock gas compressor in the urea blackening unit could not run for a long period due to the vibration caused by the scaling of the rotor, the blockage of the flow channel and the problems that the naphthalene formation in the heat exchanger affected the heat transfer effect. The preliminary design of the adsorption device was carried out. From the comparison of operating cost and product output value, the economic benefit was remarkable, and the pollution of benzene to the environment was eliminated. 
Molecular weight of activated carbon02021-09-03 23:15:27
The purification efficiency of liquid absorption method is 60%~ 80%, which is suitable for treating low concentration and large volume of organic waste gas, but there are secondary pollution. The purification rate of catalytic combustion method is 95%, which is suitable for the treatment of high concentration and small air volume organic waste gas. The disadvantage is that it has strict requirements on the treatment object and requires high gas temperature. In order to improve the exhaust gas temperature, it needs to consume a lot of fuel, so the operation cost is very high. www.powdered-activated-carbon.com  The purification efficiency of activated carbon adsorption method is 99.2%~99.3%. For the treatment of large air volume and low concentration of organic waste gas, it is agreed that this method is the most mature and reliable technology at home and abroad, but the T art process is too long, the operation cost is high, and it is often more difficult to need a stable steam source. In view of these problems, combined with the characteristics of this graduation design and only body requirements, the use of activated carbon fixed bed adsorption system for industrial organic waste gas purification, the selection of honeycomb activated carbon as adsorbent.The process system is compact and integrated with adsorption and desorption. pelletized activated carbon 
The high molecular weight of activated carbon02021-10-07 00:26:04
Water purification, can remove the organic matter and heavy metal ions and mildewy odor, bacteria and used in water decolorization, used in drinking water industry, beverage, beer, medicine, sugar and other industries water purification, decolorization process and pure water, direct drinking water production equipment;Sewage treatment: can be used to treat the chemical industry, powdered activated carbon supplier electroplating, metallurgy, printing and dyeing, leather, medicine and other sources of sewage, the removal of organic materials, bacteria and organic dyes in the water.Especially the treatment of toxic and harmful wastewater containing high metal ions;Organic solvent recovery: to benzene, ketone, fat, alcohol and other types of organic solvents can be adsorbed recovery;It can be used in solvent recovery devices such as glue spray paint and film, in benzene purification and recovery devices and in environmental protection projects of waste gas and sewage treatment.Health and anti-expansion: made of gas masks, gas and dust masks, gas jackets can have good adsorption and shielding effect on toxic gases Medical treatment and biological engineering: can be used for the manufacture of artificial kidney, liver adsorbent, used in biological engineering for enzyme fixation;activated carbon pellets wholesale   Daily life: can be used in refrigerator deodorization, fruit and vegetable preservation, household water purifier, cigarette filter, deodorization and disease prevention insoles and other daily necessities production;Other aspects: can be used as catalyst carrier, stationary phase of gas chromatography, solar heat collector and precious metal production 
Small molecular weight augmentation system for activated carbon02021-10-07 00:07:57
Principle of activated carbon adsorption activated carbon is a kind of very small granular has a large surface area, and more tiny holes in the granular - capillary. The capillary has very strong adsorption capacity, due to the granular surface area is large, so a good contact with with gas (impurities). When these gases (impurities) encounter capillary by adsorption, purification effect. Activated carbon surface area of the study is very important, only the BET specific surface area detecting data of active carbon method detected result is reliable, domestic at present there are many instruments can only make direct comparison method of detection,activated carbon pellet wholesale  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. activated carbon manufacturers in china 
Ding Xinda activated carbon molecular weight and adsorption capacity02021-10-09 02:19:35
It solves the problem that graphene material is expensive and cannot enter the industrial application field without large-scale production.powdered activated carbon supplier  It provides a foundation for the large-scale application of graphene. Using the super conductivity and large specific surface area of graphene, the problem that the traditional activated carbon material used in the electrode can no longer improve the electric storage performance was solved. The complete set of equipment not only solves the industrial method of composite graphene liquid phase method to the activated carbon material used for supercapacitor, but also can activate the activated carbon material twice at room temperature. The complete set of equipment meets the requirements of cleaner production. Chapter 2: The quality of graphene prepared by this project is guaranteed. The complete set of equipment not only solves the industrial method of composite graphene liquid phase method to the activated carbon material used for supercapacitor, but also can activate the activated carbon material twice at room temperature.activated carbon pellets wholesale  The complete set of equipment meets the requirements of cleaner production. Chapter 2: The quality of graphene prepared by this project is guaranteed. Self-made graphene has a high single-layer rate (up to 99%), fewer defects, and can be dried for a long time. Can be prepared into a variety of solutions to facilitate the composite with other materials. Raw material is a wide range of natural graphite meters, is prepared by industrial methods can be put into production. 
The carbon layer of activated carbon adsorption concept and on the molecular organic matter02021-09-06 20:25:13
Using small activated carbon fixed bed adsorption gas phase dioxin test bench, a typical activated carbon adsorption dioxin factors affecting the experimental study, discusses the types of dioxin adsorption activated carbon and activated carbon fixed bed adsorption gas phase characteristics of dioxins, and discusses the adsorption temperature and adsorption time of activated carbon adsorption of dioxins.The results showed that the specific surface area and micropore volume of activated carbon had weak correlation with the adsorption efficiency of dioxins. https://www.granular-activated-carbon.com  The mesopore volume of activated carbon is an important factor to determine the adsorption capacity of dioxins. The surface area of the pore size between 2 nm and 20nm plays a key role in the adsorption of dioxins.The higher the adsorption temperature, the lower the adsorption efficiency of activated carbon.The longer the adsorption time, the lower the adsorption efficiency of activated carbon.There is no selective adsorption of gaseous dioxins in activated carbon fixed bed. coal based granular activated carbon  
Molecular emission of activated carbon02021-07-30 23:25:36
1. Activated carbon treatment of wastewater containing chromium. Chromium is a kind of metal raw material used in electroplating. The hexavalent chromium in wastewater exists in different forms with different pH values. Activated carbon has a very developed microporous structure and high specific surface area, has a strong physical adsorption capacity, can effectively adsorb Cr (V) in wastewater. There are a large number of oxygen-containing groups on the surface of activated carbon, such as hydroxyl (-OH), carboxyl (-COOH), etc., which all have the function of electrostatic adsorption and produce chemical adsorption on Cr (VI). It can be completely used to treat Cr (VI) in electroplating wastewater, and the adsorbed wastewater can meet the national discharge standard. The results showed that when the mass concentration of Cr (VI) in the solution was 50mg/L, pH=3 and adsorption time was 1.5h, the adsorption performance and Cr (VI) removal rate of activated carbon reached the best effect. Therefore, the process of treating wastewater containing chromium by activated carbon is the result of the comprehensive action of physical adsorption, chemical adsorption and chemical reduction of Cr (VI) in solution by activated carbon. Activated carbon treatment of wastewater containing chromium has stable adsorption performance, high treatment efficiency, low operating cost, and certain social and economic benefits. https://www.granular-activated-carbon.com  2. Treatment of cyanide-containing wastewater with sexual carbon. In industrial production, cyanide or by-product cyanide is used in the wet extraction of gold and silver, the production of chemical fiber, coking, synthesis of ammonia, electroplating, gas I production and other industries, so a certain amount of cyanide-containing wastewater must be discharged in the production process. Activated carbon has been used to purify wastewater for a long time and there are more and more reports on its application in the treatment of cyanide-containing wastewater. However, due to the small adsorption capacity of CN_ and HCN on activated carbon, which is generally 3mgCN/ GAC --8mgCN/ GAC depending on the variety, it is not cost-effective in the treatment cost.coal based granular activated carbon  3. Activated carbon treatment of wastewater containing mercury. Activated carbon has the ability to adsorb mercury and mercury-containing compounds, but its adsorption capacity is limited, and it is only suitable for treating wastewater with low mercury content. If the concentration of mercury is high, it can be treated by chemical precipitation method first. After treatment, the mercury content is about 1mg/L, and it can reach 2-3mg /L when high, and then further treatment with activated carbon. 4. Activated carbon treatment of phenol-containing wastewater. Phenol-containing wastewater is widely sourced from petrochemical plants, resin plants, coking plants and oil refining and chemical plants. The experimental results show that the activated carbon has a good adsorption performance for phenol, but the increase of temperature is not conducive to adsorption, so that the adsorption capacity is reduced. But the time to reach adsorption equilibrium is shortened by increasing the temperature. The optimum values of the amount of activated carbon and the adsorption time were found, and the removal rate changed little under acidic and neutral conditions. Under the condition of strong alkalinity, the removal rate of phenol decreased sharply, the stronger the alkalinity, the worse the adsorption effect. 
Activated carbon molecular impurity02021-06-11 00:58:46
In order to provide reference and theoretical basis for the preparation and selection of activated carbon for the adsorption of dioxins, this paper carried out a study on the combined technology of activated carbon injection and double bag dust collector, the characteristics of activated carbon adsorption for dioxins and the influencing factors of activated carbon adsorption for dioxins.The adsorption and desorption isotherms of 13 kinds of commercial activated carbon were determined by low temperature nitrogen adsorption method, and the physical structures of activated carbon were calculated according to BET, T-Plot, BJH and DFT theory, and the iodine value and methylene blue value of 4 kinds of activated carbon were detected.wood based activated carbon manufacturer  The physical structure characteristics of activated carbon were analyzed in detail to prepare for the subsequent experiment.https://www.dxdcarbon.com/  Using small activated carbon fixed bed adsorption gas phase dioxin test bench, a typical activated carbon adsorption dioxin factors affecting the experimental study, discusses the types of dioxin adsorption activated carbon and activated carbon fixed bed adsorption gas phase characteristics of dioxins, and discusses the adsorption temperature and adsorption time of activated carbon adsorption of dioxins.The results showed that the specific surface area and micropore volume of activated carbon had weak correlation with the adsorption efficiency of dioxins. The mesopore volume of activated carbon is an important factor to determine the adsorption capacity of dioxins. The surface area of the pore size between 2 nm and 20nm plays a key role in the adsorption of dioxins.The higher the adsorption temperature, the lower the adsorption efficiency of activated carbon.The longer the adsorption time, the lower the adsorption efficiency of activated carbon.There is no selective adsorption of gaseous dioxins in activated carbon fixed bed. 
Molecular pigment of activated carbon02021-11-26 23:07:11
In view of the fact that the exhaust gas of printing, tanning and coating industries contains benzene, toluene and ethyl acetate, etc., the kinetics of treating the exhaust gas by activated carbon adsorption method was studied experimentally, and the optimization of operating parameters of the fixed bed adsorber was explored, which could be used for reference in engineering design.gold coconut shell activated carbon  The experimental results show that the adsorption equilibrium of pure components is in good agreement with the Langmuir equation. In the case of multi-component adsorption, due to the competition and interference between each component, the component with strong adsorption ability can replace the other component that has been absorbed, so that the penetration curve of each component has obvious changes. The penetration point of the components with relatively weak adsorption capacity was significantly advanced, while the penetration time of the components with strong adsorption capacity was delayed. In this paper, E-L equation and IAST theory are used for theoretical prediction and analysis of multi-component adsorption equilibrium, and compared with experimental results.activated carbon from china  The results show that although the prediction of total adsorption amount by E-L equation is in good agreement with the experimental results, the prediction of each component adsorption amount by E-L equation often produces positive and negative deviation, and the average error is usually more than 20%. However, IAST can eliminate the positive and negative deviation well, and the average error is less than 10%, which is more consistent with the experimental results. The operating parameters showed that the adsorption capacity of activated carbon would decrease with the increase of temperature, gas velocity or humidity. The appropriate operating range is: temperature within 40℃, gas speed between 0.1~0.5 m/s, humidity is best not more than 40%. In this range, the relationship between pressure drop and gas velocity basically conforms to Ergun equation. 

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