Allyl chloride process

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

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570234, 570241, 570246, 570252, C07C 1710

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active

043190626

ABSTRACT:
An improved process for production of allyl chloride which comprises (1) thermally chlorinating propylene above 300.degree. C., but below that at which substantial carbon formation is effected, (2) separating the allyl chloride from its by-products, (3) subjecting the unsaturated compounds in said by-products to a low temperature chlorination, (4) separating the 1,2-dichloropropane from the products of said low temperature chlorination, and (5) passing said 1,2-dichloropropane to a cracking furnace. The effluent from the cracking furnace can be recycled to the allyl chloride finishing system by adding it to the high temperature propylene chlorination reactor effluent. Reaction temperatures are optimized to eliminate problems caused by carbon formation in the high temperature chlorination reactor, while overall yields of allyl chloride are increased and effluents which are ecologically and economically undesirable are reduced.

REFERENCES:
patent: 2748176 (1956-05-01), Morris
patent: 2952713 (1960-09-01), Pallenberg et al.
patent: 3006974 (1961-10-01), De Prez
patent: 3085117 (1963-04-01), Brown et al.
patent: 3914167 (1975-10-01), Ivy et al.

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