化工厂废气的产生源及化工厂废气处理方法

　　Sources of Chemical Plant Waste Gas Generation and Treatment Methods for Chemical Plant Waste Gas

　　废气净化也叫废气处理，主要是指针对工业生产产生的工业废气诸如粉尘颗粒物、烟气烟尘、异味气体、有毒有害气体进行治理的工作。常见的废气净化有烟尘废气处理、车间粉尘废气处理、有机废气处理、废气异味处理、酸碱废气处理、化工厂废气处理等等。

　　Exhaust gas purification, also known as exhaust gas treatment, mainly refers to the treatment of industrial waste gases such as dust particles, smoke and dust, odorous gases, and toxic and harmful gases generated in industrial production. Common exhaust gas purification methods include smoke and dust exhaust gas treatment, workshop dust exhaust gas treatment, organic exhaust gas treatment, exhaust gas odor treatment, acid-base exhaust gas treatment, chemical plant exhaust gas treatment, and so on.

　　化工厂通常会排放哪个废气和有毒气体？

　　Which exhaust gases and toxic gases are usually emitted by chemical plants?

　　化工厂排放的废气主要以化工原料组分的特征因子、酸性气体（TRS还原性硫化物）、恶臭、苯系物、HCL、氨气、硫化氢、氮氧化物等。

　　The exhaust gas emitted by chemical plants mainly consists of characteristic factors of chemical raw material components, acidic gases (TRS reducing sulfides), odors, benzene derivatives HCL、 Ammonia, hydrogen sulfide, nitrogen oxides, etc.

　　简单介绍不同化工厂废气处理方法

　　Briefly introduce different methods of waste gas treatment in chemical plants

　　酸性气体（TRS还原性硫化物具有酸性、可燃性）----采用碱液洗涤，催化燃烧、高烟囱排放的方式

　　Acidic gas (TRS reducing sulfide has acidity and flammability) - washed with alkaline solution, catalyzed combustion, and high chimney emission method

　　恶臭气体（氨、硫化氢、甲硫醇、二甲硫醇、）----活性炭吸附法

　　Odorous gases (ammonia, hydrogen sulfide, methyl mercaptan, dimethyl mercaptan) - activated carbon adsorption method

　　挥发性有机物（苯、甲苯、二甲苯、非甲烷总烃）----燃烧、催化燃烧、吸附、吸收、冷凝法

　　Volatile organic compounds (benzene, toluene, xylene, non methane total hydrocarbons) - combustion, catalytic combustion, adsorption, absorption, condensation methods

　　烟尘－布袋除尘器或者静电除尘法

　　Smoke and dust - bag filter or electrostatic precipitator method

　　具体采用哪种处理方法要根据化工厂排放的具体污染物类型和浓度确定，高浓度地符合回收利用条件的要尽可能地回收。

　　The specific treatment method to be used should be determined based on the specific type and concentration of pollutants emitted by the chemical plant, and those with high concentrations that meet the recycling conditions should be recycled as much as possible.

　　对于无组织排放的废气可以采用加装集气罩负压引风收集后集中处理燃烧或者活性炭吸附等

　　For unorganized emissions of exhaust gas, the installation of a gas collection hood and negative pressure induced draft collection can be used for centralized treatment, combustion, or activated carbon adsorption

　　工业废气处理的几种方法介绍

　　Introduction to Several Methods for Industrial Waste Gas Treatment

　　1、热力燃烧法：在高温下恶臭物质与燃料气充分混合，实现完全燃烧

　　1. Thermal combustion method: fully mixing odorous substances with fuel gas at high temperatures to achieve complete combustion

　　适用于处理高浓度、小气量的可燃性气体 净化效率高，恶臭物质被氧化分解 设备易腐蚀，消耗燃料，处理成本高，易形成二次污染

　　Suitable for processing high concentration and low gas volume combustible gases with high purification efficiency. Odorous substances are easily corroded by oxidation and decomposition equipment, consume fuel, have high processing costs, and are prone to secondary pollution

　　4、催化燃烧法

　　4. Catalytic combustion method

　　5、水吸收法：利用臭气中某些物质易溶于水的特性，使臭气成分直接与水接触，从而溶解于水达到脱臭目的 工艺简单，管理方便，设备运转费用低 产生二次污染，需对洗涤液进行处理；净化效率低，应与其他技术联合使用，对硫醇，脂肪酸等处理效果差

　　5. Water absorption method: utilizing the characteristic of certain substances in the odor that are easily soluble in water, the odor components come into direct contact with water and dissolve in water to achieve deodorization. The process is simple, easy to manage, and the equipment operation cost is low, resulting in secondary pollution. Therefore, the washing solution needs to be treated; Low purification efficiency, should be used in conjunction with other technologies, and has poor treatment effects on thiols, fatty acids, etc

　　6、药液吸收法：利用臭气中某些物质和药液产生化学反应的特性，去除某些臭气成分

　　6. Liquid absorption method: utilizing the chemical reaction between certain substances in the odor and the liquid to remove certain odor components

　　适用于处理大气量、高中浓度的臭气 能够有针对性处理某些臭气成分，工艺较成熟 净化效率不高，消耗吸收剂，易形成而二次污染

　　Suitable for processing large volumes and high concentration odors, it can selectively treat certain odor components. The process is relatively mature, with low purification efficiency, consumes absorbents, and is prone to secondary pollution

　　7、吸附法：利用吸附剂的吸附功能使恶臭物质由气相转移至固相

　　7. Adsorption method: using the adsorption function of adsorbents to transfer odorous substances from the gas phase to the solid phase

　　适用于处理低浓度，高净化要求的恶臭气体 净化效率很高，可以处理多组分恶臭气体 吸附剂费用贵，再生较困难，要求待处理的恶臭气体有较低的温度和含尘量

　　Suitable for processing low concentration and high purification requirements of odorous gases, with high purification efficiency and the ability to handle multi-component odorous gases. Adsorbents are expensive and difficult to regenerate, requiring low temperature and dust content of the odorous gases to be treated

　　8、生物滤池式脱臭法：恶臭气体经过去尘增湿或降温等预处理工艺后，从滤床底部由下向上穿过由滤料组成的滤床，恶臭气体由气相转移至水—微生物混合相，通过固着于滤料上的微生物代谢作用而被分解掉。

　　8. Biological filter deodorization method: After undergoing pre-treatment processes such as dust removal, humidification, or cooling, the odorous gas passes through a filter bed composed of filter materials from bottom to top. The odorous gas is transferred from the gas phase to the water microorganism mixed phase and decomposed through the metabolic action of microorganisms fixed on the filter material.

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