Process for reducing dichlorobutene contamination in aqueous pla

Details Process for reducing dichlorobutene contamination in aqueous pla Process for reducing dichlorobutene contamination in aqueous pla

1979-03-28

1980-09-09

Wyse, Thomas G.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

260655, B01D 300, B01D 1100

Patent

active

042216591

ABSTRACT:
Chlorinated organic compounds from the aqueous waste streams from a process for manufacturing and isomerizing dichlorobutenes and dehydrochorinating 3,4-dichlorobutene-1 to chloroprene, which is the principal monomer in the manufacture of neoprene rubber, are removed by means of a process, wherein the aqueous waste from the dichlorobutene-isomerization step and brine formed in the dehydrochlorination step are combined to produce an aqueous solution containing about 1-5% sodium chloride and the solution, while maintained at a pH of less than about 6, is extracted with a small amount of a liquid hydrocarbon. The liquid hydrocarbon extract is then incinerated, while the extracted aqueous solution is discharged into a natural body of water. In this way, the level of 1,4-dichlorobutene-2, which is toxic to fish, in the natural body of water can be maintained at a safe level.

REFERENCES:
patent: 1955065 (1934-04-01), Hewley
patent: 2919246 (1959-12-01), Boer et al.
patent: 3217049 (1965-11-01), Bonem

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