工业VOCs气体处理技术应用状况调查分析

在调研大量工业VOCs气体处理工程案例的基础上,分析了不同工业VOCs气体处理技术的应用状况,包括不同处理技术在国内外的市场占有率、处理气体流量、VOCs浓度、VOCs种类以及所应用的行业等.结果表明,催化氧化、吸附、生物法是应用较多的VOCs处理技术.冷凝、膜分离和吸附工艺多用于处理浓度大于10000mg/m3的VOCs气体,并可回收VOCs;催化燃烧、热力燃烧工艺多用于处理浓度2000~10000 mg/m3且不具回收价值的VOCs气体;生物处理、等离子体多用于处理浓度低于2000mg/m3的VOCs气体.在进行VOCs处理技术选择时,应综合考虑VOCs气体特性(VOCs浓度、流量、温湿度、颗粒物含量)、VOCs处理技术的技术经济性能、排放标准等因素.

Application status of industrial VOCs gas treatment techniques

A survey was developed to collect information on full-scale industrial gaseous VOCs treatment facilities. Based on 771 VOCs treatment cases, the application status of different VOCs treatment techniques was analyzed. By investigating the marketing occupation ratio, gas flow rate, VOCs concentration, VOCs type and the industry type. Catalytic oxidation, adsorption and biological removal was found to be the most popular types of technique, but other techniques and combination of different techniques were still important. Generally speaking, condensation, membrane separation and adsorption were found to be fit to treat and recover VOCs gases with concentrations higher than 10000 mg/m3. Thermal oxidation and catalytic oxidation were much fitter to treat VOCs gases with concentrations from 2000mg/m3 to 10000mg/m3. Biotechnique and plasma oxidation were fit to treat VOCs gases with concentration lower than 2000 mg/m3. Besides the VOCs concentrations, some other characteristics of the VOCs gas, performance and economics of the techniques as well as the emission standard should also be considered before a proper technique is selected.