Waste gas treatment for catalytic devices
Thread Content
Problems with catalytic devices and waste gas treatment: Relying on high-altitude emissions is not sufficient; appropriate solutions need to be found.
Reply to 2# jzg1818: What does it mean? But as far as I know, there are still many companies working on urgently needed projects right now.
Reply to 3# zhaowenjiaohao: Catalysis leads to easy catalyst poisoning, and the treatment effect is not very significant either
Reply 4# jzg1818, is that right? Why haven’t I heard about it? Catalyst poisoning doesn’t refer to this, right? Have you made a mistake?
Catalysts are subject to certain heavy metal contamination issues, which is also the reason for their regular replacement. However, as an important device for processing heavy oil, catalytic cracking plays a vital role in the petroleum refining industry. For the flue gases generated by catalytic cracking, there are currently three conventional treatment methods. As for waste gas treatment technologies, fewer than 5 such treatment facilities have been built in China to date (as far as I know), but it is believed that this problem will surely be resolved during the 12th Five-Year Plan period! ! !
Refining catalytic exhaust gases are rich in valuable substances such as ethylene, ethane, and C3, which can be used as raw materials for the recovery of these compounds. The high-purity ethylene obtained can be utilized as a raw material for chemicals such as ethylene oxide, offering better economic benefits compared to current methods for producing ethylbenzene. We are currently implementing similar solutions for the dry gases from various refineries.
Same question: an environmental impact assessment for the DCC project is currently being carried out
At present, for the flue gas treatment in newly built catalytic cracking units operated by CNPC and Sinopec in China, the environmental protection authorities require the installation of flue gas desulfurization and flue gas denitration systems. Such as the already upgraded Lanzhou Catalysis and Da Qingdao Catalysis, as well as those under construction like Maoming Catalysis, Jinling Catalysis, and Shanghai Jinshan Catalysis. It seems that DuPont’s technology is being used in all cases; it’s very expensive, and its operation and maintenance costs are said to be high, which is why no one wants to use it.