In addition to being directly used as fuel, n-butane is also used as a subcritical biotechnology extraction solvent, refrigerant and organic synthesis raw material. Butane is dehydrogenated to butene or butadiene in the presence of a catalyst, and isomerized to isobutane in the presence of sulfuric acid or anhydrous hydrofluoric acid, isobutane is catalytically dehydrogenated to isobutene, isobutane can be used as an alkylating agent Reacts with olefins to produce branched chain hydrocarbons with good anti-knock properties. Catalytic oxidation of butane can produce maleic anhydride, acetic acid, acetaldehyde, etc.; halobutane can be produced by halogenation; nitrobutane can be produced by nitration; carbon disulfide can be produced by catalysis at high temperature; Can produce hydrogen. In addition, butane can also be used as a motor fuel blend to control volatile components; it can also be used as a heavy oil refining deasphalting agent; a wax precipitation agent in oil wells; an overflow agent for secondary oil recovery, a resin foaming agent, and seawater conversion Refrigerant for fresh water, as well as olefin agent Gele polymerization solvent, etc.
