油烟净化工艺比较
Comparison of Fume Purification Technologies
1、烟罩+洗涤塔工艺
1. Smoke hood + scrubbing tower process
2、烟罩+静电工艺
2. Smoke hood + electrostatic technology
3、混水烟罩+静电+活性炭工艺
3. Mixed Water Hood + Electrostatic + Activated Carbon Process
4、烟罩+光催化净化
4. Smoke hood + photocatalytic purification
5、液沫洗涤
5. Foam washing
油烟净化方案对比
Comparison of Oil Fume Purification Schemes
对于油烟净化，目前市场上的油烟净化处理技术方法有机械分离法、催化剂燃烧法、活性炭吸附法、织物过滤法、湿式处理法及静电处理法。
For fume purification, there are mechanical separation method, catalyst combustion method, activated carbon adsorption method, fabric filtration method, wet treatment method and electrostatic treatment method on the market at present.
1、机械分离法
1. Mechanical Separation Method
利用惯性碰撞原理或旋风分离原理对油烟进行分离。
Oil fume is separated by the principle of inertial collision or cyclone separation.
缺点：挡板滤网容易破裂，废弃直接排放；需要定期保养和维护；安装的垂直角度要小于15°；净化效率不高，只适用于预处理或净化效率要求较低的场合。
Disadvantages: baffle filter is easy to rupture and discharged directly; it needs regular maintenance and maintenance; vertical angle of installation should be less than 15 degrees; purification efficiency is not high, only suitable for pretreatment or low purification efficiency occasions.
2、催化剂燃烧法
2. Catalyst combustion method
燃烧净化法的原理是利用高温燃烧所产生的热量进行氧化反应，把油烟废气中的污染物质转化为CO2和H2O等物质，从而达到净化目的。在燃烧过程中，让油烟废气通过自净化催化剂，催化剂的催化反应有利于污染物的转化。一般采用陶瓷或金属蜂窝进行载体进行氧化催化。这类油烟净化设备只适用油烟浓度很低的场合，如食物生吃或制作半成品。
The principle of combustion purification method is to use the heat generated by high temperature combustion to carry out oxidation reaction, and convert the pollutants in the exhaust gas of oil fume into such substances as CO2 and H2O, so as to achieve the purpose of purification. In the combustion process, the fume exhaust gas is allowed to pass through the self-purification catalyst, and the catalytic reaction of the catalyst is conducive to the conversion of pollutants. In general, ceramic or metal honeycomb carriers are used for oxidation catalysis. This kind of fume purification equipment is only suitable for low fume concentration occasions, such as raw food or semi-finished products.
缺点：催化燃烧净化设备的开发还不十分成熟。
Disadvantage: The development of catalytic combustion purification equipment is not very mature.
3、活性炭吸附法
3. Activated Carbon Adsorption Method
用粒状活性炭或活性炭纤维毡吸附油烟中的污染物粒子。这种设备的特点与过滤净化设备相似，但去除油烟异味分子的效果较好。
Adsorption of pollutant particles in soot by granular activated carbon or activated carbon fiber felt. The characteristics of this equipment are similar to those of filtration and purification equipment, but the effect of removing odor molecules from oil fume is better.
主要缺点：活性炭成本较高。
Main shortcomings: high cost of activated carbon.
4、织物过滤法
4. Fabric filtration
油烟废气首先经过一定数目的金属格栅，大颗粒污染物被阻截；然后经过纤维垫等滤料后，颗粒物由于被扩散、截留而被脱除。通常选用的滤料材料为吸油性能高的高分子复合材料。这种设备投资少、运行费用低、无二次污染、维修管理方便；但阻力大、占地大、需要经常更换滤料的缺点。净化效率一般在80~92%。
Oil fume exhaust gas first passes through a certain number of metal grilles, and the large particulate pollutants are blocked. Then, after passing through the filter material such as fiber mat, the particulate matter is removed because of diffusion and interception. The commonly used filter material is high oil absorption polymer composite material. This kind of equipment has the advantages of less investment, low operation cost, no secondary pollution, convenient maintenance and management, but it has the disadvantages of large resistance, large occupation of land and frequent replacement of filter materials. The purification efficiency is generally 80-92%.
缺点：由于滤料阻力很大，如玻璃纤维滤料的净化器压降可达1500Pa，且滤料需经常更换，使过滤法净化设备的应用受到局限。
Disadvantage: Because of the great resistance of filter material, such as the pressure drop of the purifier of glass fiber filter material can reach 1500Pa, and the filter material needs to be replaced frequently, the application of filtration purification equipment is limited.