Control system for a reactor

Details Control system for a reactor Control system for a reactor

Filed on

1979-10-26

Date issued

1981-06-09

Examiner

Ruggiero, Joseph F.

Patent Class

Boots, shoes, and leggings

Other Related Categories

23230A, 208156, 208DIG1, 422109, 422110, 422142, 364109, G06G 758

Type

Patent

Status

active

Patent number

042728231

Description

ABSTRACT:
Control of the temperature profile across a reactor which contains a plurality of catalyst beds is accomplished by splitting the feed to the reactor in such a manner that a portion of the feed is introduced into the first catalyst bed in the reactor and the remainder of the feed is introduced into the second catalyst bed of the reactor. The temperature of the feed stream introduced into the first catalyst bed in the reactor is manipulated so as to maintain a desired temperature in the first catalyst bed. The feed stream introduced into the second catalyst bed of the reactor is utilized to cool the effluent flowing from the first catalyst bed to maintain a desired temperature in the second catalyst bed. A recycle stream is introduced into the remaining catalyst beds with the flow rate of the recycle stream being manipulated so as to maintain desired temperatures in the remaining catalyst beds.
Control of the ratio of the reactants flowing to the reactor is accomplished by analyzing both the feed stream to the reactor and the reaction effluent flowing from the reactor to derive a set point which is utilized to control the flow rate of at least one of the reactants to the reactor so as to maintain a desired ratio of the reactants in the reactor.

REFERENCES:
patent: 3228858 (1966-01-01), Matyear et al.
patent: 3441626 (1969-04-01), Kelley
patent: 3497449 (1970-02-01), Urban
patent: 3607091 (1971-09-01), Boyd
patent: 3725653 (1973-04-01), Carr et al.
patent: 3748448 (1973-07-01), Sayles et al.
patent: 3974064 (1976-08-01), Bajek et al.
patent: 3979183 (1976-09-01), Scott
patent: 3981793 (1976-09-01), Christie et al.
patent: 4069413 (1978-01-01), Rutledge et al.
patent: 4100266 (1978-07-01), Smith

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