Process for starting-up an ethylene oxide reactor

Details Process for starting-up an ethylene oxide reactor Process for starting-up an ethylene oxide reactor

1988-07-25

1989-10-17

Shine, W. J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D30110

Patent

active

048748790

ABSTRACT:
This invention relates to a process for starting up a fixed bed ethylene oxide reactor containing a catalyst comprising silver, alkali metal promoter and rhenium co-promoters supported on an alumina carrier which process comprises heating the reactor to slightly below normal operating conditions, passing an ethylene containing gas over the catalyst at a flow rate of about 20% of design, adding a chlorohydrocarbon moderator to the gas passing over the catalyst and after approximately 1 cubic centimeters of moderator (basis liquid) per cubic foot of catalyst has been added, then adding oxygen to the gas passing over the catalyst to initiate the ethylene oxidation reaction and subsequently raising the reactor temperature and gas flow rates to operating conditions.

REFERENCES:
patent: 4226782 (1980-10-01), Hayden et al.
patent: 4409394 (1983-10-01), Vangermain et al.
patent: 4471071 (1984-09-01), Rebsdat et al.

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