Because there are uniform small internal pores in the molecular sieve structure, Special activated carbon for catalyst carrier Fujian When the molecular linear degree of reactants and products is close to the pore size of the crystal, the selectivity of catalytic reaction often depends on the corresponding size of the molecule and pore size. 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. 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. The OH based acid sensitive site center on the molecular sieve HY obtained by ion exchange, and the aluminum ion outside the framework will strengthen the acid site, forming 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. Special activated carbon for catalyst carrier major This method often leads to dealumination of molecular sieve framework. So NaY will become NH4Y and then HY.

Special activated carbon for catalyst carrier major The operation is stable, and the exhaust gas concentration can reach the standard stably; High temperature desorption can be adopted, with high regeneration efficiency and high safety; Honeycomb zeolite is used as the adsorption carrier, with small resistance; Compact structure, small floor area of the whole equipment. Special activated carbon for catalyst carrier Fujian It has a wide range of applications and is suitable for treating various organic waste gases. Technical indicators of molecular sieve: the main material of honeycomb zeolite adsorbent is natural zeolite, and the zeolite manufacturer is mainly 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. It is more suitable for the treatment of organic waste gas with large air volume and low concentration.

Special activated carbon for catalyst carrier major 1. Strong adsorption selectivity: molecular sieve materials with different properties and pore sizes are configured for the product according to the different components of organic waste gas, so as to achieve targeted and selective treatment of organic waste gas, meet the design requirements and meet the emission standards. 2. Strong adsorption capacity: even if the gas composition concentration is very low at the mg level, it still has the adsorption capacity. The efficiency is 50% higher than that of similar activated carbon. 3. Wide adaptability of adsorption temperature: at a higher temperature, it still has a large adsorption capacity, while other adsorbents are greatly affected by temperature, so under the same temperature, the adsorption capacity of molecular sieve is large. Honeycomb zeolite molecular sieve is an efficient molecular sieve carrier with good adsorption performance, no secondary pollution and high temperature regeneration. It is widely used in the fields of adsorption, separation, catalysis and environment, and is more suitable for the treatment of organic waste gas with large air volume and low concentration. Special activated carbon for catalyst carrier Fujian It is widely used in the production of basic organic chemical industry and petrochemical industry, as well as in the treatment of harmful gases, SO2 NOx、CO、CO2，NH3，CCl4、 Purification of water vapor and gaseous hydrocarbon waste gas

The zeolite wheel adsorption purification device is a gas purification device that can continuously perform adsorption and desorption operations. Special activated carbon for catalyst carrier major The two sides of the zeolite runner are divided into three areas by special sealing devices: adsorption area, desorption (regeneration) area and cooling area. 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 along with the rotation of the wheel, and then continuously passes through the desorption area with small amount of hot air, major Fujian VOCs adsorbed on the runner are thermally desorbed in the desorption area to achieve regeneration, and VOCs waste gas is discharged with hot air; After the runner is transferred to the cooling area for cooling, it can be re adsorbed. With the continuous rotation of the runner, adsorption, desorption and cooling cycles are carried out to ensure the continuous and stable operation of waste gas treatment