Drying alkyl halides

Details Drying alkyl halides Drying alkyl halides

1979-12-06

1981-12-22

Gantz, Delbert E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C07C 1900

Patent

active

043072607

ABSTRACT:
After quenching the effluent gas from a methanol hydrochlorination reactor to condense most of the water and remove excess HCl, the wet (saturated) methyl chloride is mixed with hydrogen chloride to provide a gas mixture having a methyl chloride:HCl ratio of from about 0.4:1 to about 4:1. This mixture is then contacted with cold (-16.degree. to -21.degree. C.) concentrated (50 to 59%) aqeous hydrochloric acid to remove the water to a low level. Additionally an undesirable by-product, dimethylether, is removed along with the water. Alternatively the wet gas mixture may be cooled to that same temperature by passing over cooling coils, or other convenient means, to remove the water.

REFERENCES:
patent: 3315441 (1967-04-01), Hutton et al.
patent: 3568409 (1971-03-01), Ferguson et al.
patent: 4010017 (1977-03-01), Loyless
patent: 4145260 (1979-03-01), Steele et al.
patent: 4192821 (1980-03-01), Graser et al.

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