Process for the preparation of MTBE

Details Process for the preparation of MTBE Process for the preparation of MTBE

1990-11-19

1992-06-02

Cintins, Marianne

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

Organic compounds

Oxygen containing

203DIG6, C07C 4105, B01D 300

Patent

active

051188732

ABSTRACT:
A process is provided for etherification of essentially pure IC.sub.4.sup.= with MeOH to form MTBE in a distillation column reactor containing a fixed bed acid cation exchange resin as a catalytic distillation structure in an a distillation reaction zone. An inert C.sub.4 hydrocarbon is initially fed to the distillation column reactor to act as a diluent and a heat sink which boils at the desired temperature range for the reaction. Additionally the inert C.sub.4 diluent acts as an azeotroping agent for the MeOH in the lower end of the column carrying more of the MeOH back up into the reaction distillation zone. After start up and circulation the inert C.sub.4 hydrocarbon feed is stopped and that in the system is retained therein by total reflux of the overheads and judicious operation of the lower portion of the distillation column reactor.

REFERENCES:
patent: 4215011 (1980-07-01), Smith, Jr.
patent: 4232177 (1980-11-01), Smith, Jr.
patent: 4302356 (1981-11-01), Smith, Jr.
patent: 4307254 (1981-12-01), Smith, Jr.
patent: 4336407 (1982-06-01), Smith, Jr.
patent: 4443559 (1984-04-01), Smith, Jr.
patent: 4540831 (1985-09-01), Briggs

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