Byproduct Sulfur
Crude oil is a mixture of many varieties of hydrocarbons, and may contain sulfurous compounds. The refining process converts most of that sulfur into hydrogen sulfide. Raw natural gas also may contain gaseous hydrogen sulphide and sulfur-containing mercaptans, which are removed in natural gas processing plants before the gas is distributed to consumers.
The hydrogen sulfide removed in the refining and processing of crude oil and natural gas is subsequently converted into byproduct elemental sulfur. In fact, the vast majority of the 64,000,000 metric tons of sulfur produced worldwide in 2005 was byproduct sulfur from refineries and natural gas processing plants.
Read more about this topic: Downstream (petroleum Industry)
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