What methods is the methanol plant currently using to control VOCs?
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As the title suggests, VOC emission standards are becoming increasingly strict. I would like to know what methods are being used in the methanol plants where you work to control VOC emissions? Which companies are good at technologies for controlling VOC emissions?
You can refer to several methods in the following series of posts. Haichuan Green Major Maintenance Series https://bbs.hcbbs.com/thread-3213643-1-1.html (Source: Haichuan Chemical Forum – Chemical Currents of Haichuan)
Thank you for the reply. In your link, there is a mobile VOCs treatment system that uses the common deep cooling + activated carbon adsorption process. If the emission standards are not strict, it is possible to meet the requirements, but nowadays the demands for compliant emissions are getting higher and higher, and such traditional methods can no longer satisfy these requirements.
Mobile VOCs treatment systems are temporary measures to address irregular emissions during major overhauls, and cannot be relied on in the long term. The control of VOCs is carried out with considerable intensity in the enterprises under Sinopec and CNPC, and there are many available measures and methods; it is possible to exchange ideas and learn from these companies.
The methanol tank farm uses water washing to recover methanol in order to control VOCs.
Use the steam generated as a by-product of the incinerator; however, some plants use additional waste gas scrubbers to control VOCS.
The catalytic oxidation technique involves passing gas containing organic substances through a catalyst so that they are oxidized into inorganic substances. We have this technology 1309984684; we can discuss it together.
The wash tower absorbs and recovers methanol; the resulting methanol-water solution is then sent back to the distillation unit to be combined with the main material for further processing, which is better than simply burning off the methanol-containing exhaust gases. To achieve compliant exhaust emissions, the structural design of the absorption tower requires some specific techniques.
Incineration is a relatively thorough method, as long as proper attention is paid to safety and energy efficiency
Washing has a good adsorption effect on pure methanol, but not on crude methanol.