Views:0 Author:autower Publish Time: 2019-08-20 Origin:http://www.autower.cn/
Nowadays,the degree of industrialization is getting higher and higher.While liberating and increasing productivity,it also brings a large amount of industrial waste gas.These exhaust gases are complex and difficult to be quantitatively analyzed one by one,and are generally classified as volatile organic compounds.Volatile organic compounds are commonly used in VOCs,and sometimes expressed as total volatile organic compounds(TVOC)in the form of evaporation at room temperature in the air.Its toxicity,irritation,carcinogenicity and special odor can affect the skin and mucous membranes.Damage and impact on the human body.Therefore,environmental issues and waste gas treatment have become one of the focus issues of daily attention.
Part One Introduction of waste gas treatment process
Exhaust gas treatment is a very systematic and very professional work.It is not only without the smell of pungent odor,but also meets the national and local environmental protection requirements.Nowadays,the environmental protection requirements are becoming more and more strict,and the environmental protection enterprises and environmental protection equipment have been tested.Now there are several processes for waste gas treatment:
1.Oxidation combustion method,mainly based on catalytic combustion and heat storage combustion.
2.Low-temperature condensation method,large-area application in oil and gas recovery and other fields.
3.Activated carbon adsorption method,a wide range of uses.
4.Chemical washing method.
5.Photo Oxygen Plasma Catalytic Oxidation.
6.Biological bacteria solution,etc.
Part Two There are a lot of waste gas treatment process,how to choose a suitable,and efficient energy-saving is the key.
Catalytic combustion is a very hot term in the environmental protection industry.Catalytic combustion has the advantages of high processing efficiency and large amount of equipment exhaust gas treatment.The catalytic combustion device is suitable for high-volume,low-concentration organic waste gas.
Now it is widely used in volatile places such as spray booths and filling workshops.However,catalytic combustion cannot treat organic waste gas containing chlorides,and helium or dioxins are generated after combustion.Higher concentrations of exhaust gas may cause shortfalls in adsorption time and increased risk of high concentration during combustion.
The low-temperature condensing oil and gas recovery equipment is just the opposite.It is suitable for high-concentration and low-volume organic waste gas.The higher the concentration,the easier it is to condense and separate,and achieve the purpose of recycling.It has good condensation safety and high purity of condensed and recovered organic matter.The organic matter is recycled and continues to be used.And all the waste gas can be treated,so as to tap the potential for the enterprise.Nowadays,it is widely used in oil and gas tank areas,chemical storage tank exhaust gas,gas station oil depots,etc.Low temperature condensation also has disadvantages.When the concentration is low,the condensation temperature will decrease.The low concentration will cause high energy consumption and uneconomical operation.Therefore,low temperature condensation is generally used in conjunction with activated carbon adsorption and desorption.This ensures efficient treatment and recycling,and the activated carbon adsorption power consumption is reduced.
Activated carbon adsorption is a very common adsorption material,which has the advantages of strong adsorption capacity,cheap materials and simple process.However,the amount of activated carbon adsorbed is small and extremely saturated.It is necessary to cooperate with the activated carbon desorption regeneration process to ensure the treatment effect of the exhaust gas.The desorption of activated carbon generally adopts two methods of steam desorption and pressure desorption,and cooperates with PLC automatic control system to realize unattended automatic operation.The cycle of activated carbon is generally about one year.The replacement of activated carbon is a hazardous waste and must be treated by a qualified processing agency.The overall activated carbon waste gas treatment equipment is an effective way of low investment,low operating cost and suitable for low concentration exhaust gas treatment.
The chemical washing method utilizes the water solubility of the organic substances in the exhaust gas,and the organic substances are dissolved in the water to realize the treatment of the exhaust gas.This method is very suitable for easily soluble substances such as alcohols,aldehydes,and acids.If the exhaust gas is acidic,it can be washed with a certain concentration of lye,so that the effect can also neutralize the exhaust gas.In the treatment of exhaust gas,there are many applications for neutralization,and it is often combined with the dehumidification of the turret.
Photocatalytic oxidation of photo-oxygen is suitable for exhaust gas such as malodor.It uses a covalent bond to lower the chemical bond energy of the exhaust gas.The photo-oxygen plasma uses ions from high-voltage electrodes to emit ions and electrons,destroys the principle of malodor and organic molecular structure,and bombards the odor and organic molecules in the exhaust gas.Thereby,the malodor and the organic molecules are cracked,and the deodorized and purified are decomposed into compounds such as carbon dioxide and water.However,the photo-oxygen plasma equipment is not efficient,and the general efficiency is about 30%,which is suitable for the concentration of malodorous gases.Plasma equipment has certain safety hazards and should be used with caution when exhausting gas.
Biobacterial method,which uses the life process of microorganisms to decompose gaseous pollutants in exhaust gas into less or even harmless substances.Since the process of transforming harmful substances in the exhaust gas by the microorganisms is difficult to carry out in the gas phase,the gaseous pollutants in the exhaust gas are first transferred to the mass transfer process in the liquid film of the liquid phase or the solid surface through the gas phase,and then the pollutants are in the liquid.The phase or solid surface is degraded by microbial adsorption.Therefore,the biological bacteria solution is cumbersome for the treatment of waste gas,and the biological bacteria have different effects on different treatments of organic matter.The treatment effect on benzene substances is better.Because the treatment process of waste gas is cumbersome and the investment is large,the living environment is not high.Too suitable for exhaust gas treatment.
In summary,the exhaust gas treatment should select a suitable exhaust gas treatment process according to the characteristics of its own enterprise exhaust gas.In order to ensure efficient operation while economic operation and reduce operating power consumption and cost,Zibo Qingxin Environmental Protection Co.,Ltd.provides each customer with a dedicated exhaust gas treatment plan to ensure exhaust gas treatment.We take the quality of equipment in my hands,the customer's service tenet in my heart,sincerely serve every customer and look forward to your sincere cooperation.
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