Panjin plastic high temperature heat treatment plant odor adsorption
Activated carbon adsorption tower in Qingdao San Da environmental equipment Co. Ltd., is a highly efficient economical and practical organic waste gas treatment equipment. The utility model has the advantages of simple structure, convenient maintenance and management, low energy consumption, stable operation, low failure rate, strong adsorption capacity, high purification efficiency, complete auxiliary facilities such as pretreatment, wide application range, environmental recognition, etc..
Equipment construction
The adsorption tower is composed of four parts: an upper box body, a lower bracket, a working ladder, a platform guardrail and a discharge device.
Activated carbon tower type can be designed as: magazine type, horizontal type, drum type. Material can be made using SUS304, SS41, PP, etc.. Commonly filled with activated carbon coconut shell and coal activated carbon, internal anti-corrosion treatment
Activated carbon is a kind of adsorbent material widely used in industrial waste gas and wastewater treatment at present. There are two research focuses on activated carbon: one is the development of activated carbon with special properties, such as fiber activated carbon and wood activated carbon; two is the modification of activated carbon pore structure adjustment, improve the ability to absorb specific adsorbates or reduce the desorption requirements. The commonly used methods for the modification of activated carbon are oxidation, reduction, loading of heteroatom and compounds. The adsorption of activated carbon from coconut shell activated carbon was enhanced by wet oxidation of coconut shell activated carbon with H2O2 and HNO3. Purification of activated carbon was modified by acid and alkali, can improve the selective adsorption of volatile organic compounds. The treatment of activated carbon with high boiling point material can reduce the requirement of desorption conditions.
Comparison of exhaust gas purification technology
There are many kinds of treatment methods of organic waste gas, which are characterized by water spraying, condensation, absorption, combustion, catalytic, adsorption and so on.
1 condensation recovery method: the direct condensation of waste gas or adsorption condensation condensation, condensate separation, recovery of valuable organic matter. The method is used for the treatment of high concentration, low temperature and small air volume. But this method of large investment, high energy consumption, high operating costs, and therefore no special needs, generally do not use this method.
2 absorption method: using the absorption liquid and the gas contact, the waste gas in the harmful substances into the absorption liquid, so as to purify the waste gas.
The method is simple and reliable, the investment is saved, and the air quantity is not limited. Different liquids can be selected for different pollutants. However, it is difficult to choose a suitable absorbent for the volatile organic solvent waste gas, which can not be used as absorbent.
3 direct combustion method: the use of gas or fuel and other auxiliary fuel combustion emissions of heat will be mixed gas heating to a certain temperature (700 - 800 C), stay a certain time, so that the combustion of harmful gases. This method has the advantages of simple process, less equipment investment, high energy consumption, high operation cost, and safety risks.
4 catalytic combustion method: the exhaust gas is heated to 200 to 300 DEG C through the catalytic bed combustion, to achieve the purpose of purification. The method has the advantages of low energy consumption, high purification rate, no two pollution, simple process and convenient operation. Suitable for high temperature and high concentration of organic waste gas treatment, not suitable for low concentration, large volume of organic waste gas treatment.
5 adsorption: the adsorption capacity of the adsorbent with large surface area, when the exhaust gas through the adsorbent, the harmful substances in the exhaust gas is adsorbed, the exhaust gas purification. The adsorption method is mainly used to adsorb and purify the pollutants in the exhaust gas. This method is more suitable for the treatment of low concentration exhaust gas with less than medium air flow. This method is easy to operate, easy to manage, good effect.
6 Adsorption - catalytic combustion method: this method has advantages of comprehensive adsorption and catalytic combustion method, using novel adsorption materials (honeycomb activated carbon) adsorption, the hot air introduced in close to saturation after desorption, desorption, desorption gas catalytic combustion bed flameless combustion, the thorough purification, hot gas cycle in the system, greatly reduce the energy consumption. The method has the advantages of stable and reliable operation, low operation cost, convenient maintenance, etc., and is suitable for the treatment of large air volume and low concentration waste gas