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The main material of honeycomb zeolite adsorbent is natural zeolite. The zeolite manufacturer is an inorganic microporous material composed of sio2, al_2o_3 and alkaline metal or alkaline earth metal, Columnar activated carbon high quality Its inner pore volume accounts for 40-50% of the total volume, and its specific surface area is 100-500 m2/g. It is characterized by high temperature resistance, non flammability, good thermal stability and hydrothermal stability. It is an efficient molecular sieve carrier with good adsorption performance, no secondary pollution, and can be regenerated at high temperature. Compared with honeycomb activated carbon, its performance is about 25% of its efficiency, but it has high temperature resistance and is not easy to ignite Catalysis and environment are widely used, which is more suitable for the treatment of organic waste gas with large air volume and low concentration. Zeolite adsorbent products include microporous adsorbent and mesoporous adsorbent. Columnar activated carbon Direct selling (1) Microporous molecular sieves with molecular apertures below 2 nm, mesoporous molecular sieves with molecular apertures above 50 nm (macroporous molecular sieves with molecular apertures above 50 nm), mesoporous molecular sieves have high specific surface area, regular and orderly pore structure, narrow pore size distribution, continuous and adjustable pore size and other characteristics, which make it difficult to complete the adsorption and separation of macromolecules in many microporous molecular sieves, And catalytic reaction. (2) Therefore, molecular sieve materials with different properties and pore sizes shall be configured according to the different components of organic waste gas during selection, so as to achieve targeted organic waste gas treatment, meet the design requirements and emission standards.
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Columnar activated carbon high quality Microporous molecular sieves with molecular apertures below 2 nm, mesoporous molecular sieves with molecular apertures above 50 nm (macroporous molecular sieves with molecular apertures above 50 nm), mesoporous molecular sieves have high specific surface area, regular and orderly pore structure, narrow pore size distribution, continuous and adjustable pore size and other characteristics, which make it difficult to complete the adsorption and separation of macromolecules in many microporous molecular sieves, And catalytic reaction. Therefore, molecular sieve materials with different properties and pore sizes shall be configured according to the different components of organic waste gas during selection, so as to achieve targeted organic waste gas treatment, meet the design requirements and emission standards. The main material of honeycomb zeolite adsorbent is natural zeolite. The manufacturer of zeolite is composed of silica Inorganic microporous material composed of al_2o_3 and alkaline metal or alkaline earth metal, with inner pore volume accounting for 40-50% of the total volume and specific surface area of 100-500 m2/g, has the characteristics of high temperature resistance, non flammability, good thermal stability and hydrothermal stability. It is an efficient molecular sieve carrier with good adsorption performance, no secondary pollution, and high temperature regeneration. Compared with honeycomb activated carbon, its performance is about 25% of its efficiency Columnar activated carbon Ganzhou However, it is widely used in the fields of adsorption, separation, catalysis and environment due to its high temperature resistance and low ignition resistance. It is more suitable for the treatment of organic waste gas with large air volume and low concentration.
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The main components of zeolite are: silicon and aluminum, which have adsorption capacity and can be used as adsorbent; Zeolite runner is to use the specific pore size of zeolite to have the ability of adsorption and desorption for organic pollutants, so that VOCs waste gas with low concentration and large air volume can be concentrated and converted into low air volume and high concentration gas by the zeolite runner, which can reduce the operating cost of the back-end final treatment equipment. Columnar activated carbon Ganzhou The characteristics of the device are suitable for treating waste gas with large flow, low concentration and various organic components. The disadvantage is high initial investment. The zeolite wheel adsorption purification device is a gas purification device that can continuously perform adsorption and desorption operations. The two sides of the zeolite runner are divided into three areas by special sealing devices: adsorption area, desorption (regeneration) area and cooling area. Columnar activated carbon high quality The working process of the system is as follows: the zeolite runner rotates continuously at a low speed and circulates through the adsorption area, desorption (regeneration) area and cooling area; When the exhaust gas with low concentration and large air volume continuously passes through the adsorption area of the runner, VOCs in the exhaust gas are adsorbed by the zeolite of the runner, and the gas purified by adsorption is directly discharged; The organic solvent adsorbed by the wheel is sent to the desorption (regeneration) area with the rotation of the runner, and then the small amount of hot air continuously passes through the desorption area. The VOCs adsorbed on the runner are thermally desorbed in the desorption area to achieve regeneration, and the VOCs waste gas is discharged together with the hot air; After the runner is transferred to the cooling area for cooling, the adsorption can be carried out again. With the continuous rotation of the runner, the adsorption, desorption and cooling cycles are carried out to ensure the continuous and stable operation of waste gas treatment.
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Columnar activated carbon Ganzhou Since the adsorption does not change chemically, Columnar activated carbon high quality As long as we try to drive away the molecules concentrated on the surface, zeolite molecular sieves will have adsorption capacity again. This process is the reverse process of adsorption, which is called the process of desorption or regeneration. Honeycomb zeolite molecular sieve is a kind of aluminosilicate material containing alkali metal or alkaline earth metal oxide with open framework and regular pore cage structure. It has been widely used since it was discovered by Swedish scientists in 1956, and then it has been widely used in petrochemical industry, environmental protection, bioengineering and other fields due to its special physical characteristics. And with the gradual expansion of the demand for zeolite molecular sieves, researchers began to expand a variety of synthetic methods of zeolite molecular sieves to meet the needs of various fields. Zeolite molecular sieve has super strong adsorption performance, which is due to a "surface force" generated by molecular gravity on the solid surface. When the fluid flows, some molecules in the fluid collide with the adsorbent surface due to irregular movement, resulting in molecular concentration on the surface, reducing the number of such molecules in the fluid to separation Purposes of clearing
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Columnar activated carbon high quality The evaluation of the adsorption of zeolite depends not only on whether the specific surface area of zeolite is large enough, but also on whether the equipment is hydrophobic. When purchasing, people can choose the inspection equipment. When the air humidity for the hydrophobicity of the inspection equipment is greater than 60%, if the equipment is blocked and the machine works abnormally, people should carefully consider whether to purchase the equipment. It is important to know that the adsorption and hydrophobicity of the zeolite runner are equally important. The zeolite content of the zeolite runner is proportional to the adsorption concentration efficiency. Therefore, many people should pay more attention to whether the zeolite content of the equipment meets the requirements or is high enough when choosing to purchase the zeolite runner. On the one hand, selecting excellent equipment is also to enhance the potential value of the enterprise. Columnar activated carbon Ganzhou The adsorption and concentration technology of zeolite runner is deeply loved by enterprises because of its high efficiency and energy saving characteristics. Its changeable working environment and low cost have laid an unshakable position for zeolite runner in industry. How to select a zeolite runner with stable operation and high efficiency needs people's eyes
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Molecular sieve has clear pore cavity distribution, extremely high internal surface area (600m2/s), good thermal stability (1000 ℃), and adjustable acid site center. The acidity of molecular sieve mainly comes from three coordinated aluminum atoms and aluminum ions (AlO)+on the framework and in the pores. OH based acid sensitive site center on molecular sieve HY obtained by ion exchange, Columnar activated carbon Ganzhou The aluminum ions outside the framework will strengthen the acid site and form the L acid site center. Polyvalent cations such as Ca2+, Mg2+and La3+can show the acid site center after exchange. The reduction of transition metal ions such as Cu2+and Ag+can also form acid site centers. In general, the higher the Al/Si ratio, the higher the specific activity of OH group. The modification of zeolite acidity can introduce protons through direct exchange of dilute hydrochloric acid. This method often leads to dealumination of molecular sieve framework. So NaY will become NH4Y and then HY. Because there are uniform small internal pores in the molecular sieve structure, when the molecular linearity of reactants and products is close to the pore size of the crystal, the selectivity of the catalytic reaction often depends on the corresponding size of the molecule and pore size. Columnar activated carbon high quality This selectivity is called shape selective catalysis. There are two mechanisms leading to shape selectivity. One is caused by the difference of diffusion coefficient of molecules participating in the reaction in the pore cavity, which is called mass transfer selectivity; The other is caused by the space limitation of the transition state of the catalytic reaction, which is called transition state selectivity.