What processing is required for coking benzene used in the production of maleic anhydride?
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Dear students: What kind of processing is required for coking benzene used in the production of maleic anhydride? Is hydrogenation refining necessary? What is the cost involved? Is the refined benzene competitive compared to petroleum benzene?
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Can maleic anhydride be produced from coked pure benzene without hydrogenation? If so, it would be somewhat competitive; however, if hydrogenation purification is required, it’s uncertain.
Well, this question is quite childish; nowadays, the benzene content in pickled and coked products is usually >=99.5, and the sulfur content is also well controlled, staying below 400 for thiophene. CS2, 50ppm. Advanced manufacturers are researching the direct deep processing of acid-washed benzene; by improving catalysts, a company in China is now using cokerized benzene to produce ethylene. The production of *** is also very common. Manufacturers save costs by not purchasing those expensive petroleum benzene and hydrogenated benzene.
What are the requirements for benzene used in the production of maleic anhydride? :Q
If petrochemical-grade benzene is used, isn’t it a waste of purity?
Pickled materials can be used with pure benzene to produce maleic anhydride; this is done in the North China region, but it leads to clogging issues, and the quality of the product is not as good as that obtained through hydrogenation
Impressive! The pickling method can reduce the total sulfur content to below 100. I really want to know how it’s done; you’re an expert!
The exhaust gases from the absorption towers in the butane process and benzene process are currently treated using catalytic combustion technology. This technology is employed by a factory in Shanghai for producing maleic anhydride via the benzene process, as well as by a factory in Zhejiang for producing maleic anhydride via the butane process. It not only eliminates the need for fuel but also generates large amounts of steam, resulting in significant economic and environmental benefits! For specific details, contact wangbochao@shdonghua.com
Coking benzene is produced by the pickling method, with strict control during the production process; it can be used as a raw material for the production of maleic anhydride. However, considering various factors, its quality is slightly inferior to that of petroleum benzene and hydrogenated coking benzene.
Highly purified acid-washed coking benzene can be used as a raw material for the production of maleic anhydride; strict control is required over its sulfur content, as well as the levels of thiophene and carbon disulfide. This is because these factors affect the catalysts used in the production of maleic anhydride, as well as the thermal stability of the resulting product.