Coking crude benzene is the byproduct of coking industry, the composition of whichis very complicated , and the content of benzene, toluene, xylene can even reach 90percent. Crude benzene can’t be directly used in the production of chemical productsuntil it is refined firstly to remove impurities, especially the high content of thiophene.As the environment protection is more valued today, the refining method of crudebenzene is transformed from the traditional sulfur acid washing technology to catalytichydro...
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