Purification of 1,3-butadiene

Details Purification of 1,3-butadiene Purification of 1,3-butadiene

1998-08-31

2000-07-25

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 87, 203 98, 203 99, 203DIG19, 585810, B01D 300, C07C 704, C07C 5144

Patent

active

060932856

ABSTRACT:
A system and process for purifying a 1,3-butadiene feedstock containing 1,3-butadiene and various impurities by first introducing the 1,3-butadiene feedstock stream to a separation column to produce an intermediate product stream containing 1,3-butadiene and residual impurities and then introducing the produced intermediate product stream through a condenser to a suitable dryer for removing residual impurities from the intermediate product stream and thereby forming a purified 1,3-butadiene stream. The separation column separates an overhead stream, containing 1,3-butadiene and impurities such as propadiene, water and oxygen, and a bottoms stream, containing impurities such as polymerization inhibitor, ethyl acetylene, 1,3-butadiene dimer, pentane and 1,2-butadiene, from the intermediate product stream which leaves the separation column in the form of a vapor side draw stream.

REFERENCES:
patent: 3281489 (1966-10-01), Goering
patent: 3620930 (1971-11-01), Tschopp et al.
patent: 4339623 (1982-07-01), Morgan et al.
patent: 5397439 (1995-03-01), Kandori et al.

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