Recovery of waste streams containing recoverable chlorine

Details Recovery of waste streams containing recoverable chlorine Recovery of waste streams containing recoverable chlorine

1978-09-28

1980-04-01

Vertiz, O. R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

423164, 423197, C07C 7100

Patent

active

041961404

ABSTRACT:
A process is disclosed for recovering recoverable chlorine from chemical plant waste streams.
An aqueous stream containing recoverable chlorine is reacted with an alkali metal hydroxide, such as sodium hydroxide, to form a slurry of solid particles of alkaline earth metal hydroxide, such as calcium hydroxide, suspended in a liquid. The calcium hydroxide is filtered or otherwise separated from the liquid. The liquid is admixed with an organic alcohol to form an organic-aqueous solution. A halogenating agent, such as chlorine, is reacted with the organic-aqueous solution to form a solution of organic hypochlorite in an organic phase and an aqueous phase.
The solution of organic hypochlorite is phase separated to form aqueous and organic phases. The aqueous phase containing sodium chloride may be recycled for use as a reactant in a chlor-alkali electrolytic cell.
The organic phase containing organic hypochlorite may be used as a chlorinating agent or may be treated with an acid, such as hydrochloric acid, to reclaim free chlorine.

REFERENCES:
patent: 1632483 (1927-06-01), MacMullan
patent: 2694722 (1954-11-01), Katz
patent: 3954948 (1976-05-01), Sakowski
Chattaway et al. "Alkyl Hypochlorites" Journal Chemical Society vol. 123 (1923) pp. 2999-3003.
Fort et. al. "Alkyl Hypochlorites" as abstracted in Chemical Abstracts vol. 49 (1955) # 12,271a.
Jolly, "The Synthesis and Characterization of Inorganic Compounds" Prentice-Hall, Inc., New Jersey, 1970, pp.97, 99-101.

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