Preheating methanol effects steady state operation of conversion

Details Preheating methanol effects steady state operation of conversion Preheating methanol effects steady state operation of conversion

Filed on

1976-02-17

Date issued

1977-08-23

Examiner

O'Keefe, Veronica

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

SubSubClass

C-metal

Other Related Categories

260668A, 260671C, 260672T, 260676R, 260677R, 260682, 208118, 208120, 208135, 208141, C07C 122

Type

Patent

Status

active

Patent number

040440613

Description

ABSTRACT:
The conversion of methanol to gasoline boiling hydrocarbons in a thermally balanced operation with a special group of zeolite catalysts having a constraint index of 1 to 12, a silica to alumina ratio of at least about 12 and a crystal density of not substantially lower than about 1.6 grams per cubic centimeter is described. The steady state operation of the process is improved by feeding methanol preheated to a selected temperature proximate to its boiling point so that the heat required thereafter to vaporize the feed and to raise its temperature to conversion temperature is substantially equal to the exothermicity of the conversion itself.

REFERENCES:
patent: 2051774 (1936-08-01), Kleinschmidt
patent: 2884370 (1959-04-01), Nonenmacher et al.
patent: 3666423 (1972-05-01), Muenger
patent: 3894107 (1975-07-01), Butter et al.

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