VOCs exhaust emissions data consistently exceed the standards—where is the problem?

Some companies have already installed VOCswaste gas treatmentFacilities, but online monitoring data or environmental sampling results often exceed the standard. Where exactly is the problem? Only by identifying the root cause can we prescribe the right medicine.

The first common reason is that the equipment selection does not match the working conditions. For example, if the exhaust gas contains particulate matter or high boiling point substances that enter the adsorption or catalytic unit without pre-treatment, it can cause rapid deactivation of the adsorption material or catalyst. The second reason is improper setting of operating parameters. for exampleRTOInsufficient combustion temperature and incomplete oxidation; Or the condensation temperature of the condenser is not low enough, and the organic matter is not fully liquefied. The third reason is the lack of equipment maintenance.activated charcoalLong term non replacement, failure to clean contaminated membrane components, and failure to defrost condenser can all lead to a cliff like decrease in processing efficiency. The fourth reason is more subtle, that is, the actual composition and concentration of the exhaust gas have changed compared to the design phase, and the treatment equipment has not been adjusted accordingly.

A stable and reliable process for addressing these pain points is the condensation membrane separation process. The physical separation characteristics of this process determine its relatively low sensitivity to external interference. The condensing unit ensures efficient liquefaction of target organic compounds by precisely controlling the temperature; The membrane separation unit adopts a selective permeable membrane, which only allows organic molecules to pass through and is less affected by water vapor and particulate matter. As long as the refrigeration system and membrane system maintain normal operating conditions, there will be minimal fluctuations in processing efficiency. LuoyangWohong PetrochemicalThe condensation film method system provided by Equipment Co., Ltd. is equipped with an intelligent control system that can monitor key parameters such as condensation temperature and pressure difference on both sides of the film in real time. Once an abnormality is detected, it will automatically alarm and prompt maintenance, reducing the risk of exceeding the standard from the root.

For enterprises with frequent emission data exceeding the standard, it is recommended to conduct a comprehensive retest of exhaust gas conditions first, compare the differences between design parameters and actual parameters, and then upgrade the treatment process or strengthen daily maintenance management in a targeted manner.