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How to make better granular activated carbon12021-09-14 02:41:30
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 detectionIn 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. www.powdered-activated-carbon.com The commonly used activation gases are carbon dioxide, water vapor, oxygen, etc., due to the oxidation reaction of these gases on the surface of the carbonized substance, eroding the carbonized substance, thus producing a rich porous structure.(2) Chemical method.pelletized activated carbon  Chemical activation method is a method of preparing activated carbon by adding chemicals to the raw materials used or impregnation into the raw materials or carbonized materials, and then heating it at high temperature in inert gas.The chemicals used in chemical activation are generally dehydrating.The more commonly used activator is: inorganic acid varieties have phosphoric acid, sulfuric acid and boric acid, salt varieties have zinc chloride, calcium carbonate and potassium sulfate, alkali varieties have sodium hydroxide, potassium hydroxide, etc. 
How to make better granular activated carbon02021-12-28 21:35:53
China's activated carbon production coal is mainly concentrated in the northwest region, there are long bituminous coal, weak viscous coal and anthracite, due to the single coal properties of the restriction, China's coal-based activated carbon products are mostly in the middle and low grade products.Coal based activated carbon production in China, starting in the 1950 s, but slow to develop early in the early 1980 s the national annual production of about 4 000 t [2 l. Along with the reform and opening up, economic development and the gradual improvement of the people's living standard and increasing efforts in environmental protection at home and abroad in recent years, domestic demand of activated carbon, and exports continue to increase, coal based activated carbon industry is developing rapidly. In the late 80 s, China's coal-based activated carbon produced more than 20000 tons, in 2000 reached 100000 tons, 400000 tons in 2008 or so,China has basically formed an independent, complete and initial industrial system for the preparation of activated carbon, and has become the world's largest producer of coal-based activated carbon.Due to the advantages of coal resources and product price, China's coal-based activated carbon products have a strong competitiveness in the international market.activated carbon gold mining  Introduction to activated carbon  At present, about 80% of China's coal-based activated carbon products are exported, and it is the largest coal-based activated carbon exporter in the world. Shanxi and Ningxia account for about 90% of China's coal-based activated carbon production and 80% of the export of coal-based activated carbon.Therefore, the production of coal-based activated carbon products has a broad prospect and is expected to achieve good economic benefits in the regions with rich raw material resources.At present, the production of coal-based activated carbon is mainly in Shanxi, Ningxia and Henan.The production of activated carbon with nut shell as raw material is mainly in hebei province; the production of activated carbon with wood as raw material is mainly concentrated in fujian, jiangxi, southern zhejiang and northeast region.In recent years, has gradually formed to Henan Changge City, Ningxia Yinchuan City and surrounding areas, Shanxi Datong region as the representative of the "three" activated carbon production base.Ningxia Yinlong Activated Carbon Co., Ltd. is the largest active carbon manufacturer in Asia with an annual output of 50,000 tons.Ningxia Huahui Activated Carbon Co., Ltd. manufactures a wide variety of activated carbon products and some of the performance of the products up to the world's advanced level.activated carbon company   Shenhua Ningxia coal industry taixi charcoal based company activated carbon plant in recent years also determined to establish the world's largest activated carbon production base, the activated carbon industry will develop into one of the four pillar industries of Ningxia coal industry. 
How to make better granular activated carbon02021-12-28 21:34:12
Its adsorption performance mainly depends on several main material parameters and process parameters on it [8. Material parameters including carbon adsorption porosity, thickness of honeycomb structure and the content of carbon; process parameters including fluid flow rate and concentration of the adsorption properties of adsorption, can adsorption depends on the carbon structure and adsorption properties of features such as molecular weight). The curve is one of the main performance characterization of adsorption, adsorption is the adsorbate concentration ratio before and after the change over time of a function [9 '. This ratio is 0.95, the amount of adsorption properties of adsorption is called penetration capacity. Penetration capacity depending on the fluid flow rate, the concentration of the adsorbate and honeycomb carbon component contentactivated carbon gold mining  Factors such as [10. For honeycomb activated carbon, the wall thickness is a very important parameter, by changing the wall thickness to improve its adsorption efficiency. Under the same porosity, thickness increases, the honeycomb carbon content per unit volume also will increase, which can improve the adsorption capacity. This is because the wall thickness increases, the fluid channel in the cellular cross-sectional area reduced, so the real surface or volume flow rate will increase. At the same time, the contact between adsorbate and carbon efficiency will, there is a balance between the two. Under the given conditions, the balance will determine adsorption increase or decrease. If the adsorbate at higherthe diffusion rate diffuses to the inside of the honeycomb wall, and the empty adsorption site can be continuously adsorbed, so the thick-walled honeycomb should have better adsorption efficiency and adsorption capacity"Determination of air velocity and cross-sectional area of empty towerThe empty tower gas velocity is the velocity of gas passing through the entire cross section of the adsorber.The selection of air velocity not only directly determines the size and pressure drop of the adsorber, but also affects the adsorption efficiency. activated carbon company 
How to make better granular activated carbon02021-12-03 22:27:23
Affected by the change of energy prices, the enterprises that use petroleum and coke as raw materials to produce urea and methanol have successively transformed their gas-making systems to burn inferior coal to reduce costs. These changes more or less to the original system and production process caused a certain impact, these new problems caused by the change of raw materials must be solved, to ensure the production of efficient and stable operation. 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. 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. 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. 
How to make better granular activated carbon02021-07-02 02:33:02
one is the chemical combination of elements, mainly oxygen and hydrogen, these elements are due to incomplete carbonization and residual in the carbon, or in the activation process, foreign non-carbon elements and activated carbon surface chemical combination;Another kind of admixture is ash, which is the inorganic part of activated carbon, and ash in active carbon is easy to cause secondary pollution.Because of its strong adsorption, activated carbon is widely used in production,In the life.Activated carbon material is processed by the amorphous carbon, has a large specific surface area, the gas, solution of inorganic or organic matter and colloidal particles have good adsorption capacity.Activated Carbon materials mainly include Activated Carbon (AC) and Activated Carbon Fibers (ACF), etc.Activated carbon material as a kind of excellent adsorbent, mainly because of its unique adsorption surface structure and surface chemical properties.Activated carbon material has stable chemical properties and high mechanical strength. coal activated carbon manufacturer  Under certain operating conditions, the gas mixture by adsorption bed, adsorption by adsorption, adsorption after a period of time, when starting from the adsorbent in the laminar flow of the gas adsorbed mass (or its concentration reaches a specified value), think bed fire, adsorption properties of adsorbent adsorption quantity at this time is called dynamic activity of adsorbent.yrd carbon  The activity is not only related to the characteristics of adsorbents and adsorbents, but also related to temperature, concentration and operating conditions. The kinetic activity value of adsorbent is the main basis for the design of adsorption system. 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 micropores (3) adsorption, the adsorbent reached the microporous surface of the adsorbent is adsorbed (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. 
How to make better granular activated carbon02021-06-30 19:03:10
(1) coal-based activated carbon, also known as coal-based activated carbon. It is a general term for a large class of activated carbon products made of various raw coal through different processes.Coal-based activated carbon can be divided into molding carbon and raw coal direct crushing carbon according to the different manufacturing process.dxdcarbon.com  The former and can be further subdivided into wet molding charcoal (such as tar, papermaking black liquor, such as starch paste liquid adhesive manufacturing columnar, ball charcoal, honeycomb carbon, etc.) and dry molding charcoal (such as join solid bitumen, starch, such as tree powder as adhesive used for Mao briquette made of molding process, tabletting, pelleting and broken charcoal or rules of pelleting shape activated carbon).activated carbon manufacturers  Generally speaking, forming carbon can be mixed with a variety of raw coal to adjust the pore distribution characteristics of the final product, so as to obtain some special application performance, and more than 80% of the pore distribution characteristics of raw coal directly broken carbon has been determined by the raw material, so the performance and use is simple. (2) wood activated carbon.It is mshell/core activated carbon.Such as coconut shell carbon, apricot kernel carbon, peach kernel carbon, etc.(4) petroleum activated carbon.Using petroleum asphalt, petroleum coke as raw materials, made of activated carbon products.resin activated carbon.Using phenolic resin, waste ion exchange resin as raw materials, through a special process of activity.Carbon products, sometimes fibrous carbon also falls into this category.High - definition watermark of cut document under air(6) other small varieties of activated carbon products. Made of animal blood blood carbon, made of animal bones bone charcoal (there is very little, but bone charcoal carbon main ingredients of hydroxy calcium phosphate), with active carbon molecular sieve made of various materials, made of strong base and carbon materials of high surface area activated carbon, is made of organic polymer solution after mold made of special process method of activated carbon, activated carbon aerogels and so on. 
How to make better granular activated carbon02021-06-30 01:41:35
Activated carbon is a carbon adsorption material with coal, wood and nut shell as raw materials, used in gas adsorption. Separation, purification and separation of liquid purification and other fields.wan yang carbon  The industrial application of activated carbon by appearance distinguish forming granular activated carbon, are there not finalize the granular activated carbon, powdered activated carbon, activated carbon fiber, etc., main application fields including wastewater treatment, activated carbon depth clean drinking water, medicine and food decolorizing refining, precious metal extraction, gas separation and purification, solvent recovery, and military and civil protection.https://www.activated-carbon-pellets.com/  Taking coal as raw material to the production of coal based activated carbon is a kind of has a developed interspaces structure of carbonaceous adsorption material, has good chemical stability and mechanical strength, coal based activated carbon products can be widely used in decoloring purification, solvent recovery, gas separation, gas purification, and various kinds of water treatment and other fields, some through special processing, the special T also can be used as a high-performance activated carbon desulfurization agent, catalyst and catalyst carrier, mountain in the acid and alkali resistant, heat resistant, granular activated carbon on adsorption saturation after failure, can be a party to regenerate. The application of coal-based activated carbon is divided into liquid phase and gas phase according to the characteristics of the material. The liquid phase is mainly used in decolorization, recovery of precious metals and water treatment. Gas phase is mainly used in gas purification and recovery, industrial waste gas treatment, flue gas desulfurization and gas protection, etc. In recent years, some foreign activated carbon manufacturers have developed coal-based activated carbon with special adsorption capacity by adopting new processes, new methods and advanced raw material treatment technology, which has greatly improved and enhanced the performance of coal-based activated carbon products, expanded the application field and highlighted a broader market prospect. 
How to make better granular activated carbon02021-09-04 00:40:04
Adding appropriate chemical reagents will play the role of catalytic oxidation [73], and these chemical reagents will also increase the active point of activation reaction, which is conducive to the development of activated carbon pores. Now at home and abroad the main research work is mainly the following aspects: a, additive in the functional mechanism of manufacturing activated carbon energy gao jun of China university of mining mechanism of additives in the manufacturing activated carbon made detail [4, pointed out that: the catalyst in the carbonization stage prompted carbon the destruction of the molecular structure of aromatic raw materials, to "structure" of disordering, provides a good initial activation reaction conditions, is an important factor to improve the activation of activated carbon pore. In the process of activation, potassium to strengthen the directionality of the pore, thereby reducing the unnecessary on ignition, and accelerated the process of pore forming,https://www.granular-activated-carbon.com  And pore distribution is given priority to with microporous activated carbon; refractory in the catalyst to ash content of SiO2 and Al, 03, etc, into acid soluble potassium nepheline chemical compounds such as magnesium and calcium silicon stone is the key to improve pickling deliming rate factor b and additives on the activated carbon adsorption properties, pore structure and pore size distribution - adding different additives. The influence of the activated carbon: c, chemicals for coking products.  www.powdered-activated-carbon.com 
How to make better granular activated carbon02021-06-02 19:09:43
Adsorption capacity refers to the amount of adsorbents adsorbed on the adsorbent per unit mass under certain conditions. It is usually expressed in terms of K adsorbents /kg of adsorbent or mass percentage, which is a sign of the adsorption capacity of the adsorbent. In industry, the amount of adsorption is called the activity of the adsorbent. The activity of the adsorbent can be expressed in two ways :(1) the static activity of the adsorbentUnder certain conditions, the equilibrium adsorption capacity of the adsorbent is its static activity.For a certain adsorption system, the static activity depends only on the adsorption temperature and the concentration or partial pressure of the adsorbed substance. Dynamic activity of adsorbents wholesale activated carbon pellets  Under certain operating conditions, the gas mixture by adsorption bed, adsorption by adsorption, adsorption after a period of time, when starting from the adsorbent in the laminar flow of the gas adsorbed mass (or its concentration reaches a specified value), think bed fire, adsorption properties of adsorbent adsorption quantity at this time is called dynamic activity of adsorbent.manufacturers of coconut shell activated carbon in china  The activity is not only related to the characteristics of adsorbents and adsorbents, but also related to temperature, concentration and operating conditions. Activated carbon is porous carbon material, has a strong adsorption capacity,Widely used in air purification, wastewater treatment and other fields.The reactive nitric acid is placed in an environment to absorb radon gas, and then Y measurement is carried out, which can be pushed Calculate the radon concentration in the environment.Activated carbon Y energy spectrum is one of the main methods for measuring radon.In 1957, Mirandajr "used activated carbon as an adsorber to measure radon concentrations in the atmosphere;Since then, many scholars have carried out a series of theoretical and experimental studies on the method of measuring radon on activated carbon, and it has been widely used in the study of radon release rate 23. In 1986, Lin Lianqing et al. carried out radon measurement by activated carbon. In 1993, China promulgated the national standard 5 for the method of measuring radon by activated carbon V energy spectrum. Since then, this method has been popularized and applied in China, and has achieved satisfactory results in the determination of radon release rate and radon concentration in air L6-8.The radon measurement by activated carbon mainly measures the energy spectrum peak of 2Pb or 21Bi, and the radon concentration value is calculated from the net peak area. This method can distinguish 2Rn daughters, which is convenient for attenuation correction, and has a strong anti-interference ability for other Y radiators (such as 2Rn and its daughters, etc.).However, it requires high energy resolution and low counting rate. The theoretical basis, attenuation correction and standing time of this radon measurement method are discussed. 
How to make better granular activated carbon02021-06-02 19:22:36
Activated carbon, is black powder or block, granular, honeycomb amorphous carbon, but also a regular arrangement of crystalline carbon.In addition to carbon elements, activated carbon also contains two kinds of admixtures: one is the chemical combination of elements, mainly oxygen and hydrogen, these elements are due to incomplete carbonization and residual in the carbon, or in the activation process, foreign non-carbon elements and activated carbon surface chemical combination;Another kind of admixture is ash, which is the inorganic part of activated carbon, and ash in active carbon is easy to cause secondary pollution.Because of its strong adsorption, activated carbon is widely used in production,In the life.Activated carbon material is processed by the amorphous carbon, has a large specific surface area, the gas, solution of inorganic or organic matter and colloidal particles have good adsorption capacity.Activated Carbon materials mainly include Activated Carbon (AC) and Activated Carbon Fibers (ACF), etc.Activated carbon material as a kind of excellent adsorbent, mainly because of its unique adsorption surface structure and surface chemical properties.Activated carbon material has stable chemical properties and high mechanical strength. https://www.activated-carbon-pellets.com/  The selection of treatment technology should be based on the gas volume, purification requirements, the possibility of recovery, the economy of equipment construction and operation and other conditions. Special attention should be paid to the close cooperation with the process in practical work, so as to achieve comprehensive utilization as far as possible.dxd activated carbon  At present, there are three common methods of organic waste gas treatment at home and abroad: liquid absorption method, activated carbon adsorption method and catalytic combustion method. 
How to make better granular activated carbon02021-12-07 19:06:13
Chapter 1 This project adopts the company's own large amount of monolayer stone which can be dried and preserved and treated with solution activated carbon for gold recovery  Preparation method of graphite namely graphene.activated carbon wholesale  Raw materials are commonly used graphite and common chemicals, easy to operate, easy to enlarge. It solves the problem that graphene materials are expensive and cannot enter the field of industrial application without large-scale production. It provides a basis for large-scale application of graphene.Using the super conductivity and large specific surface area of graphene solves the problem that the traditional activated carbon material can no longer improve the electric storage performance when used on the electrode. Complete set of equipment in addition to solve the industrial method of graphene liquid phase composite to activated carbon materials for super capacitor, and can be activated activated carbon materials at room temperature. Complete sets of equipment meet the requirements of cleaner production. Chapter 2 The quality of graphene prepared by this project is guaranteed. The graphene prepared by white has a high monolayer rate (up to 99%), fewer defects, and can be dried for a long time. Can be prepared into a variety of solutions to facilitate compounding with other materials. Raw material is natural graphite from a wide range of sources, is prepared by industrial methods can be scaled up production. To make the industrial application of graphene possible, promote the advancement of high-tech materials, and promote industrial development. 
How to make better granular activated carbon02021-12-29 21:07:49
Activated carbon catalyst can promote the decomposition of ozone. The consumption rate of liquid phase ozone in activated carbon catalytic secondary oxidation process is 71.2% higher than that in ozone secondary oxidation process. The analysis of the relationship between ozone consumption and organic matter content in activated carbon catalytic secondary oxidation process shows that activated carbon can react directly with ozone or act as a free radical initiator in the process of ozone decomposition, especially when the organic matter content in water is low. When ozone dosage is L mg/L, the MIB removal rate of catalytic secondary oxidation is about L times higher than that of ozone secondary oxidation. When the concentration of ozone in water is about 1.5 mg/L, the catalytic secondary oxidation makes BrO; The concentration decreased by 0.04mg/L.activated carbon for gold recovery  The combined process of catalytic oxidation and activated carbon filtration has higher water purification efficiency. When the influent ozone concentration is 0~0.1 mg/L and influent UV254 is 0.020~0.030 L /em, the average removal rate of UV2sa by catalytic and ozone activated carbon is 30% and 21%, respectively. The removal rate of UV2s4 and DOC by activated carbon filtration is the highest when influent water quality and liquid phase ozone concentration is moderate. The DOC removal rate reached the maximum when the liquid phase ozone relative concentration (O/DOC) was about 0.3. The organic matter content and ozone concentration of activated carbon influent after catalytic oxidation are low, which is beneficial to the adsorption capacity and surface properties of activated carbon. In addition, metal oxides lost by the catalyst can be adsorbed by the activated carbon, which also helps to promote the decomposition of ozone on the surface of the activated carbon. activated carbon wholesale  

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