Control of an isomerization process

Details Control of an isomerization process Control of an isomerization process

1984-04-27

1986-11-04

Richman, Barry S.

Chemistry: analytical and immunological testing

Condition responsive control

364500, 422 62, 422108, 422110, 422111, 585734, G01N 3500, G05B 100, G05B 106, G05B 2300

Patent

active

046210628

ABSTRACT:
Control of an isomerization process is based on a known relationship between the octane number and temperature of a reaction at equilibrium; and a predetermined relationship between octane number and temperature of the reaction product of a reactor using a specific catalyst. In use, measurements of actual octane number and temperature are compared with the octane number and temperature of a reaction at equilibrium to determine if the reaction is at equilibrium. If the reaction is not at equilibrium, a control signal is developed to restore equilibrium. Thus control of an isomerization process is accomplished so as to substantially maximize the efficiency of the isomerization process both from a production standpoint and from an energy usage standpoint by maintaining the isomerization reaction at desired equilibrium conditions. Also, for a dual reactor system, the differential temperature between the two reactors is manipulated so as to maintain more favorable isomerization conditions in the tail reactor. Energy efficiency is improved by substantially minimizing the amount of heating fluid utilized to preheat the feed to the isomerization process.

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Cartwright et al, "C.sub.5 /C.sub.6 Isomerization", Hydrocarbon Processing, Sep. 1982, p. 170.

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