The crude benzol is the byproduct of coking industry, by the purification of which chemical foundation raw materials such as benzene, toluene and xylene can be obtained.
焦化粗苯是炼焦工业的副产品，精制可得到苯、甲苯及二甲苯等化工基础原料。
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Recovery of crude benzene is the coking plant production of intermediate products, refined workshop production of benzene, toluene, xylene and other products of raw materials.