In petroleum refining, there are sulfur compounds in petroleum, so at present, basically all refineries have sulfur recovery workshops.

The general process is: through the main production workshops of oil refining (such as atmospheric vacuum distillation, catalytic cracking, hydrocracking, delayed coking, etc.). ), the sulfur in the oil will be separated and transported to the sulfur recovery workshop in the form of sulfur-containing sewage. The sulfur workshop recovers sulfur from sulfur-containing sewage to produce sulfur, and also purifies the sewage.

I work in an oil refinery. The above words are completely handwritten. Give them to me.