涂装、喷漆、印刷这些行业，VOCs治理是绕不过去的坎。但很多企业花了大价钱上设备，运行成本却高得离谱——天然气烧得心疼，电费月月超标，处理效果还不稳定。问题往往不在设备本身，在工艺路线选错了。

VOCs control is an unavoidable hurdle in industries such as painting, spray painting, and printing. But many companies spend a lot of money on equipment, but the operating costs are outrageously high - natural gas burns painfully, electricity bills exceed the standard every month, and the treatment effect is still unstable. The problem often lies not in the equipment itself, but in choosing the wrong process route.

先搞清楚废气的三个基本参数。

First, clarify the three basic parameters of exhaust gas.

选VOCs处理工艺，必须先摸清自己的废气：风量、浓度、组分。

To choose a VOCs treatment process, one must first understand their own exhaust gas: air volume, concentration, and composition.

喷漆房和涂装线是典型的“大风量、低浓度”——风量动辄几万甚至十几万立方米每小时，浓度却只有一两百毫克每立方。这种工况直接上RTO焚烧，天然气消耗能让运行成本失控。印刷车间的废气浓度稍高，组分也更复杂，含苯系物、酯类、酮类多种物质。烘干环节的废气浓度最高，但风量小，适合直接燃烧或冷凝回收。

Spray painting rooms and painting lines are typical of "high air volume, low concentration" - air volume can easily reach tens of thousands or even tens of thousands of cubic meters per hour, but the concentration is only one or two hundred milligrams per cubic meter. This operating condition can be directly incinerated by RTO, and natural gas consumption can cause operating costs to spiral out of control. The exhaust gas concentration in the printing workshop is slightly higher and the composition is more complex, containing various substances such as benzene, esters, and ketones. The exhaust gas concentration in the drying process is the highest, but the air volume is small, making it suitable for direct combustion or condensation recovery.

工艺路线，按浓度和风量分档选。

Process route, selected according to concentration and air volume.

浓度低于500 mg/m3、风量大的，优先走“沸石转轮浓缩+RTO”。转轮把低浓度废气浓缩5到20倍，再进RTO焚烧，能耗能降一大截。这是涂装行业目前最主流的组合。

For concentrations below 500 mg/m3 and with high air flow, priority should be given to using "zeolite wheel concentration+RTO". The rotary wheel concentrates low concentration exhaust gas by 5 to 20 times, and then enters RTO incineration, which can significantly reduce energy consumption. This is currently the most mainstream combination in the painting industry.

浓度在500到5000 mg/m3之间的，可以选RTO直接焚烧，也可以考虑“活性炭吸附+催化燃烧（CO）”。活性炭吸附适合浓度波动大的工况，脱附后的高浓度气体进CO炉，起燃温度只要250到350℃，比RTO省气。

For concentrations between 500 and 5000 mg/m3, RTO can be chosen for direct incineration, or "activated carbon adsorption+catalytic combustion (CO)" can be considered. Activated carbon adsorption is suitable for working conditions with large concentration fluctuations. After desorption, the high concentration gas enters the CO furnace and the ignition temperature is only 250 to 350 ℃, which saves gas compared to RTO.

浓度高、风量小、有回收价值的，比如烘干废气、溶剂使用量大的工序，优先考虑冷凝回收或吸收回收，把溶剂回收回来比烧掉更划算。

For processes with high concentration, low air volume, and recycling value, such as drying exhaust gas and high solvent usage, priority should be given to condensation recovery or absorption recovery. Recovering the solvent is more cost-effective than burning it.

浓度极低、异味为主的，比如污水处理站、垃圾中转站的臭气，可以用光解光氧、生物净化这类工艺，成本低但要注意长期稳定性。

For odors with extremely low concentration and predominant odor, such as those from sewage treatment plants and garbage transfer stations, processes such as photocatalytic oxidation and biological purification can be used, which are low-cost but require long-term stability.

预处理是很多企业忽略的致命环节。

Preprocessing is a fatal link that many enterprises overlook.

进沸石转轮或活性炭之前的废气，颗粒物必须控制住。漆雾、粉尘、水雾不处理干净，沸石微孔堵了、活性炭中毒了，几万块的吸附材料直接报废。前处理至少要三级过滤——G4初效挡大颗粒，F7中效拦细粉尘，F9高效做精过滤，颗粒物去除率做到99%以上。喷漆房还要加漆雾凝聚或干式过滤，把粘性漆雾截住。

The particulate matter in the exhaust gas before entering the zeolite wheel or activated carbon must be controlled. Paint mist, dust, and water mist are not cleaned thoroughly, zeolite micropores are blocked, activated carbon is poisoned, and tens of thousands of adsorption materials are directly scrapped. At least three levels of filtration are required for pre-treatment - G4 initial effect to block large particles, F7 medium effect to block fine dust, F9 high-efficiency fine filtration, with a particle removal rate of over 99%. The paint booth also needs to add paint mist condensation or dry filtration to intercept the sticky paint mist.

安全红线不能碰。

The safety red line cannot be touched.

VOCs废气大多可燃，处理系统必须按防爆要求设计。沸石转轮脱附后的浓缩气浓度要控制在爆炸下限的25%以下；RTO和CO炉前端要装阻火器和泄爆片；活性炭吸附高浓度废气时，炭层温度要监测，超过80℃就有自燃风险。

Most VOCs exhaust gases are flammable, and the treatment system must be designed according to explosion-proof requirements. The concentration of concentrated gas after zeolite wheel desorption should be controlled below 25% of the lower explosive limit; RTO and CO furnaces should be equipped with flame arresters and explosion relief devices at the front end; When activated carbon adsorbs high concentration exhaust gas, the temperature of the carbon layer should be monitored. If it exceeds 80 ℃, there is a risk of spontaneous combustion.

选供应商，看的是整体方案能力。

Choosing a supplier depends on the overall solution capability.

山东创杰智慧装备科技位于德州齐河，2016年成立，做的是表面处理、涂装、环保设备、智能机器人的整体解决方案，产品覆盖喷砂房、喷漆房、涂装线、喷粉线，以及有机废气处理设备。服务过煤矿机械、汽车制造、工程机械、钢结构、风电、核能工业、电气、能源化工、新材料、新能源等行业，与多家世界500强企业有合作，产品出口俄罗斯、泰国、越南、印度、南非、墨西哥等地。

Shandong Chuangjie Intelligent Equipment Technology is located in Qihe, Dezhou. It was established in 2016 and provides comprehensive solutions for surface treatment, painting, environmental protection equipment, and intelligent robots. Its products cover sandblasting rooms, paint spraying rooms, painting lines, powder spraying lines, as well as organic waste gas treatment equipment. We have served industries such as coal mining machinery, automobile manufacturing, engineering machinery, steel structures, wind power, nuclear energy, electrical, energy chemical, new materials, and new energy. We have cooperated with many Fortune 500 companies and exported our products to Russia, Thailand, Vietnam, India, South Africa, Mexico, and other places.

这类供应商的价值在于：涂装线和废气处理是配套设计的。喷漆房的排风量、漆雾处理方式、废气浓度波动，直接决定后端VOCs治理工艺的选型。只卖废气设备的厂家和能出整体方案的厂家，落地效果差别很大。

The value of this type of supplier lies in the fact that the painting line and exhaust gas treatment are designed to complement each other. The exhaust volume, paint mist treatment method, and fluctuations in exhaust gas concentration of the paint booth directly determine the selection of VOCs treatment processes for the back-end. There is a significant difference in the effectiveness between manufacturers who only sell exhaust equipment and those who can provide overall solutions.

VOCs治理的本质，是用对的工艺匹配废气的风量、浓度和组分。参数摸清、工艺选对、预处理做够、安全守住——这四条做到了，环保设备才真正达标又省钱。

The essence of VOCs treatment is to match the air volume, concentration, and composition of exhaust gas with the right process. By understanding the parameters, selecting the right process, doing enough pre-treatment, and ensuring safety, environmental protection equipment can truly meet standards and save money.

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This article is a friendly contribution from VOCs waste gas treatment For more information, please click: http://www.sdcjtz.com We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message