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. Henan 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. major 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.

High silica zeolite type molecular sieves, this kind of zeolite has a series, and ZSM-5 is widely used, with ZSM-8 and ZSM-11 having the same structure; The other group is ZSM-21, ZSM-35 and ZSM-38. ZSM-5 is often called high silica zeolite, with the Si/Al ratio up to 50 and ZSM-8 up to 100. This group of molecular sieves also shows hydrophobic characteristics. production Their structural units are similar to those of mordenite, consisting of pairs of five membered rings, with no cage like cavities and only channels. ZSM-5 has two sets of cross channels, one is straight through, the other is zigzag perpendicular to each other, both formed by ten yuan rings. The channel is oval and its window diameter is (0.55-0.60) nm. major Zeolites belonging to the high silicon group also have silicalite-1 of all silicon type, which has the same structure as ZSM-5, and silicalite-2 is the same as ZSM-11.

major 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. Henan 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

Molecular sieve is a crystalline silicate or aluminosilicate, which is a pore and cavity system with molecular size (usually 0.3nm to 2.0nm) formed by connecting silicon oxygen tetrahedron or aluminum oxide tetrahedron through oxygen bridge bond, Henan Therefore, it has the characteristics of screening molecules. However, with the deepening of molecular sieve synthesis and application research, researchers have found phosphoaluminate molecular sieves, and the skeleton elements (silicon or aluminum or phosphorus) of molecular sieves can also be replaced by B, Ga, Fe, Cr, Ge, Ti, V, Mn, Co, Zn, Be and Cu, and the size of its pores and cavities can also reach more than 2 nm, major Therefore, molecular sieves can be divided into silicon aluminum molecular sieves, phosphorus aluminum molecular sieves and skeleton heteroatom molecular sieves according to the composition of skeleton elements;

production Microporous molecular sieves with molecular pore size below 2 nm and mesoporous molecular sieves with molecular pore size between 2-50 nm (50 nm The above are macroporous molecular sieves), 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 play an important role in the adsorption, separation and catalytic reaction of macromolecules that are difficult for many microporous molecular sieves to complete. 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, 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, However, it is widely used in the fields of adsorption, separation, catalysis and environment due to its high temperature resistance and difficult ignition, major It is more suitable for the treatment of organic waste gas with large air volume and low concentration.