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Activated carbon large adsorption capacity and value
The adsorption effluent curve of benzene by activated carbon was plotted.activated carbon pellet wholesale
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.https://www.chinactivecarbon.com/activated carbon manufacturers in china
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 highest use of activated carbon
Acid-base modification is to use acid, alkali and other substances to treat activated carbon, according to the actual need to adjust the surface functional groups of activated carbon, make it change, improve its ability of adsorption of metal ions, so as to achieve the desired adsorption effect.Acid-base modification of activated carbon is usually carried out to improve the adsorption effect of activated carbon on metal ions represented by copper ions. The commonly used modifiers include HC1, NaOH and citrate 3.It was found that by acid-base modification of common coal activated carbon, the ash content of the activated carbon could be greatly reduced and the specific surface area of the activated carbon could be increased
Electrochemical modification is to change the electrical and chemical properties of activated carbon surface by using micro electric field, so as to improve the adsorption selectivity and performance.It does not need to add chemical agents, does not need to heat, does not cause pollution to the environment, low energy consumption, only a few hundred millivolts, easy to operate.The results show that the adsorption equilibrium of activated carbon is dependent on the electric potential: the adsorption amount of activated carbon increases with the increase of the potential, and the adsorption speed is accelerated;Arpolarity polarization is beneficial to the adsorption of chloroform by activated carbon, [url=https://www.chinactivecarbon.com/]activated carbon manufacturers in china[/url]while cathodic polarization inhibits the adsorption of chloroform by activated carbon 3-341]. Activated carbon heteroatom carrier and compound modificationActivated carbon has very high stability and good activity, these two basic properties become the activated carbon as a catalyst or catalyst carrier conditions.By introducing certain heteroatoms and compounds on the surface of activated carbon by liquid phase deposition, the adsorption performance of activated carbon can be increased by using the binding effect between these substances and adsorbents.compounds, which has the advantages of increasing the reaction rate and increasing the adsorption capacity.Yang Quanhong et al. 'Using FESO;Activated carbon material was modified.[url=http://www.chinactivecarbon.com/products/coal-activated-carbon-pellets.html]activated carbon pellet wholesale[/url]
The highest use of activated carbon
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.
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[url=https://www.coalactivatedcarbon.com/]coal based activated carbon factory[/url]
(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.[url=https://www.granular-activated-carbon.com/]https://www.granular-activated-carbon.com/[/url]
Activated carbon large adsorption capacity
Physical method is to use carbon dioxide, water vapor or the mixture of both as activator, the carbonized carbon material and gas in the activation furnace at 500~1200℃ for carbon activation reaction, so that the pore size of the carbonized material to expand, the formation of activated carbon with porous microcrystalline structure.Gas activation method mainly includes carbonization and activation engineering.The so-called carbonization, refers to the low temperature (about 500℃) is small, the volatile coal tar molecules in the material and the thermal decomposition and curing process of asphalt, that is, to remove the volatile in advance, made suitable for the next step of activation with carbonization.
When the temperature is below 600℃, the specific surface area of carbonized material increases with the increase of temperature.When 600~900℃, the specific surface area reaches a certain value: 250~300 m2/g; when above1000℃, the specific surface area shrinks rapidly.
When the carbonization temperature is above 800℃, the reaction performance of carbonized compounds and activation gas gradually becomes weaker, so the carbonization temperature is generally below 1000℃. However, if the residual volatile content and thermal effect are taken into account, the most suitable temperature should be 600~700℃39].
The carbonized substance obtained from the carbonization process is placed in water vapor or a mixture of water vapor and combustion gas and heat treated at 800~1000℃, which is called the activation process.
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.
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.
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The void interior and carbon layer structure of activated carbon
Main uses of activated carbon:
1. Used for liquid phase adsorption of activated carbon
· Tap water, industrial water, electroplating wastewater, pure water, beverage, food, medicine water purification and preparation of electronic ultra-pure water.
· Decolorization, purification and purification of sucrose, xylose, monosodium glutamate, medicine, citric acid, chemical products and food additives
· Decolorization, impurity and flavor removal of grease, oil products, gasoline and diesel oil, purification, deodorization and impurity removal of alcohol and beverages · Purification, refining, decolorization and filtration of products in fine chemical, pharmaceutical and pharmaceutical processes.
Environmental protection engineering wastewater, domestic wastewater purification, decolorization, deodorization, COD reduction
2. Used for gas phase adsorption of activated carbon
· Adsorption and recovery of benzene, toluene, xylene, acetone, oil and gas, CS2 and other organic solvents.
· Non-smoke filter, decoration odor removal, indoor air purification (removal of formaldehyde, benzene, etc.), industrial gas purification (such as CO2, N2, etc.)
Petrochemical industry production, natural gas purification, deodorization, deodorization, waste gas treatment
· Air 'i purification and deodorization in biochemical, paint industry, underground places, leather factories and animal feeding places. · Adsorption of odor and sulfide in flue gas, removal of mercury vapor, and reduction of generation of dioxin. 3. Active carbon used in high demand fields[url=https://www.coalactivatedcarbon.com/]coal based activated carbon factory[/url]
Catalyst and catalyst carrier (palladium carbon catalyst, nail carbon catalyst, money carbon catalyst, platinum carbon catalyst), precious metal catalyst and synthetic diamond, gold extraction.[url=https://www.granular-activated-carbon.com/]https://www.granular-activated-carbon.com/[/url]
The void interior of the activated carbon
Activated carbon is a kind of carbon adsorption material with rich pore structure and high specific In view of the above problems, through in-depth analysis of the carbonization process of activated carbon, the design of FX2N PLC as the core controller, Mitsubishi touch screen as the man-machine interface automatic control system, to achieve the automatic control of the carbonization section, improve the degree of automation of equipment.
The quality of activated carbon is directly affected by the control performance of furnace temperature and pressure of carbonization furnace.
The carbonization process of carbonization furnace is a complex chemical reaction process, which has the characteristics of multivariable coupling, nonlinear, time delay and so on.
It is difficult to establish accurate mathematical model for furnace outlet temperature and furnace tail pressure, and it is difficult to realize it by means of general control process.
Through the comparison and analysis of the fuzzy PID control and the parameter self-adjusting fuzzy PID control simulation, the final determination of the parameter self-adjusting fuzzy PID control algorithm, the blower and induced draft fan speed adjustment, the simulation shows that the control effect is good, has a certain application value.
The touch screen is used to realize the human-computer interaction function, and the monitoring system is established to monitor the process parameters such as temperature and pressure in real time. The functions of setting formula, alarm and curve recording are set up to meet the monitoring situation of the production site.
At present, domestic activated carbon preparation technology is relatively backward, equipment automation degree is low, resulting in waste of resources,
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Activated carbon organic adsorption capacity and continued development
Physical method is to use carbon dioxide, water vapor or the mixture of both as activator, the carbonized carbon material and gas in the activation furnace at 500~1200℃ for carbon activation reaction, so that the pore size of the carbonized material to expand, the formation of activated carbon with porous microcrystalline structure.Gas activation method mainly includes carbonization and activation engineering.The so-called carbonization, refers to the low temperature (about 500℃) is small, the volatile coal tar molecules in the material and the thermal decomposition and curing process of asphalt, that is, to remove the volatile in advance, made suitable for the next step of activation with carbonization.
When the temperature is below 600℃, the specific surface area of carbonized material increases with the increase of temperature.When 600~900℃, the specific surface area reaches a certain value: 250~300 m2/g; when above1000℃, the specific surface area shrinks rapidly.
When the carbonization temperature is above 800℃, the reaction performance of carbonized compounds and activation gas gradually becomes weaker, so the carbonization temperature is generally below 1000℃. However, if the residual volatile content and thermal effect are taken into account, the most suitable temperature should be 600~700℃39].
The carbonized substance obtained from the carbonization process is placed in water vapor or a mixture of water vapor and combustion gas and heat treated at 800~1000℃, which is called the activation process.activated carbon pellet wholesaleactivated carbon manufacturers in china
Organic matter adsorption capacity of activated carbon
Activated carbon is widely used in all aspects of industrial and agricultural production, such as the petrochemical industry without alkali deodorization (refined demercaptan), ethylene desalting water (refined filler), catalyst carrier (palladium, platinum, man, etc.), water purification and sewage treatment;
Water quality treatment and protection in power plants in the power industry;
Chemical industry of chemical catalyst and carrier, gas purification, solvent recovery and oil and other decolorization, refining;
Food industry beverage, wine, MSG mother liquor and food refining, decolorization;
Gold extraction and tailings recovery in the gold industry;
Environmental protection industry sewage treatment, waste gas and harmful gas treatment, gas purification;
As well as related industries of cigarette filter, wood floor moistureproof, taste absorption, automobile gasoline evaporation pollution control, the preparation of various impregnation liquid, etc.
Activated carbon in the future will have excellent development prospects and broad sales market.
Main uses of activated carbon:
1. Used for liquid phase adsorption of activated carbon
· White water, T. Industrial water, electroplating wastewater, pure water, beverage, food, medicine water purification and preparation of electronic ultra-pure water.
· Decolorization, purification and purification of sucrose, xylose, monosodium glutamate, medicine, citric acid, chemical products and food additives
- Decolorization, impurity removal and flavor removal of grease, oil products, gasoline and diesel oil, purification, deodorization and impurity removal of alcohol and beverages, purification, refining, decolorization and filtration of products in fine chemical industry, [url=https://www.coalactivatedcarbon.com/]coal based activated carbon factory[/url]pharmaceutical chemical industry and biological pharmaceutical process.
· Purification, decolorization, deodorization and COD reduction of environmental engineering wastewater and domestic wastewater[url=https://www.granular-activated-carbon.com/]https://www.granular-activated-carbon.com/[/url]
2. Used for gas phase adsorption of activated carbon
Use: newly decorated houses, rooms, office buildings, hotels, air-conditioned rooms, entertainment places, new furniture, cars and other places on: "happy forest" can deodorize, disinfect, purify the air.
Efficacy: it has the function of adsorption and purification for formaldehyde, benzene, radon, tVOC and other harmful gases released by various decorative materials, and it has obvious effect on removing various peculiar smells.https://www.granular-activated-carbon.com/
Activated carbon and petroleum
The evaporation loss of petroleum and its products during processing, storage and transportation is an important problem perplexing the petroleum and environmental protection industries.https://www.chinactivecarbon.com/
If no action is taken, the impact on people's health, the economy and the environment will be serious. Therefore, it is urgent and important to promote and adopt oil and gas recovery technology.In this paper, the basic principles of four oil and gas recovery technologies such as adsorption method, condensation method, absorption method and membrane separation method are described, and the oil and gas recovery technology based on adsorption method is systematically analyzed.A kind of activated carbon material suitable for oil and gas recovery system by adsorption method was selected according to the design requirements.
The main equipment of oil and gas recovery system by activated carbon adsorption method, the activated carbon tank, is designed and calculated, and its strength is checked.https://www.coconutactivatedcarbon.com/
The flowchart of the oil and gas recovery system by activated carbon adsorption in the laboratory of Environmental Engineering Department is also drawn, and the system is simulated in three dimensional.
Finally, the economic and technical analysis of activated carbon oil and gas recovery technology is carried out, and it is considered that the application of activated carbon adsorption oil and gas recovery system will bring obvious social benefits, environmental benefits and economic benefits, and has a wide application prospect.
Wholesale granular activated carbon
Micropores at 2.0nm.Due to the pore structure of GAC, its adsorption speed is slow and its separation rate is not high. Especially, its physical form makes it inconvenient in application and operation, which limits the application range of GACACF is the third generation of activated carbon products after powdered and granular activated carbon products.Activated carbon fiber developed in the 1970s is a new and efficient adsorbent with the development of carbon fiber industry.https://www.coconutactivatedcarbon.com/
The characteristics of carbon fiberACF is a member of the porous carbon family with unique properties. Compared with the traditional granular activated carbon (GAC), ACF has the following characteristics: the pore structure of ACF and GAC is very different, as shown in Figure 1 and Figure 2.The pore distribution of ACF is basically monodispersed, mainly composed of micropores smaller than 2.0nm, and the pore openings are directly on the surface of the fiber. The diffusion path of the adsorbate to the adsorption site is short, and the fiber diameter is small. Therefore, the contact area with the adsorbed substance is large, which increases the adsorption probability and can be uniformly contacted.Industry should beActivated carbon also requires high mechanical strength, good wear resistance, its structure is stable, small energy required for adsorption, in order to be conducive to regeneration.Activated carbon for oilDecolorization, deodorization, gas separation, solvent recovery and air conditioning of fat, beverage, food and drinking water, used as catalyst or adsorbent for body and gas mask.Physical characteristics:Activated carbon is a kind of multi-aperture carbonization, has a very rich pore structure, has good adsorption characteristics, its adsorption by physical and chemicalAbsorbed from the force, the appearance of the color and lustre is black.Its composition in addition to the main carbon, but also contains a small amount of hydrogen, nitrogen, oxygen, its structure is shaped like a hexagon, due to the irregular hexagon structure, determine the characteristics of its body also incandescentand high surface area, each gram of activated carbon has the equivalent of 1000 square meters than the surface.https://www.chinactivecarbon.com/
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