Manufacture of methyl chloride by hydrochlorinating methanol, us

Details Manufacture of methyl chloride by hydrochlorinating methanol, us Manufacture of methyl chloride by hydrochlorinating methanol, us

1988-12-02

1990-05-01

Mars, Howard T.

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

Organic compounds

Halogen containing

C07C 1716

Patent

active

049220438

ABSTRACT:
In a process for making methyl chloride by the catalytic hydrochlorination of methanol in the liquid phase, the common formation of unwanted dimethyl ether by-product is reduced by conducting the process in at least two reactors operating in series and by introducing all or substantially all of the required hydrogen chloride feed into the first reactor while splitting the introduction of methanol feed, preferably as a vapor, between or among the reactors.
The overall feed ratio of methanol to hydrogen chloride is in the range between about 0.65 to about 1.0 mol methanol per mol hydrogen chloride. Aqueous zinc chloride is the preferred catalyst.

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patent: 2847484 (1958-08-01), Kolker
patent: 3981938 (1976-09-01), Steele et al.
"Kirk-Othmer Encyclopedia of Chemical Technology", vol. 3, p. 741, (1949).
Vulcan Materials Company, "Manufacture of Chloromethanes from Methyl Alcohol and Chlorine".
Sconce, "Chlorine, Its Manufacture, Properties and Uses", ACS Monograph No. 154, pp. 363-364, and FIG. 12-6 on p. 365.
Encyclopedia of Chemical Processing and Design, vol. 8, pp. 256-259 (1979).
Vulcan Materials Company In-House literature searches dated Jun. 17, 1982; Jan. 7, 1987; and Jul. 23, 1987.

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