Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound
Patent
1977-03-23
1979-09-04
Bernstein, Hiram H.
Distillation: processes, separatory
Adding material to distilland except water or steam per se
Organic compound
203 81, 203 82, 203 62, 585857, 585864, B01D 334
Patent
active
041667719
ABSTRACT:
A mixture of C.sub.4 -hydrocarbons is extractively distilled with sulfolane and acetone or methylethyl ketone as the selective solvent; the rich solvent containing 1,3-butadiene and vinylacetylene is stripped and a small quantity of the ketone is allowed to leave overhead. Thereby the further fractionation of the stripper overhead results in a very efficient separation of 1,3-butadiene and vinylacetylene.
REFERENCES:
patent: 2360859 (1944-10-01), Evans et al.
patent: 2371908 (1945-03-01), Morris
patent: 2382603 (1945-08-01), Buell
patent: 3436438 (1969-04-01), Takadeta
patent: 4024028 (1977-05-01), Haskell
Haskell Donald M.
Houser Clarence G.
Sherk Fred T.
Bernstein Hiram H.
Phillip Petroleum Company
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