Fractionating column control apparatus and methods

Details Fractionating column control apparatus and methods Fractionating column control apparatus and methods

1988-02-16

1989-12-26

Manoharan, Virginia

Distillation: processes, separatory

With measuring, testing or inspecting

Of temperature or pressure

73 642, 196132, 202160, 202206, 203DIG18, 208DIG1, 364501, B01D 314, B01D 342

Patent

active

048896004

ABSTRACT:
Apparatus and methods for determining the Reid Vapor Pressure of a bottoms product stream of a fractionating column used for fractionating a multi-component hydrocarbon feed stream into an overhead product stream and a bottoms product stream are provided. The Reid Vapor Pressure of the bottoms product stream is determined in response to the temperature of the bottoms product stream, the vapor pressure of the bottoms product stream, the rate of flow of the bottoms product stream and the rate of flow of the overhead product stream, without an analysis of the particular product stream. The Reid Vapor Pressure indication is used to maintain the actual Reid Vapor Pressure of the bottoms product system substantially equal to the desired Reid Vapor Pressure of the bottoms product stream and to thereby control the quality of the bottoms and other product streams.

REFERENCES:
patent: 3901062 (1975-08-01), Lynch et al.
patent: 3964975 (1976-06-01), Harrison et al.
patent: 3976179 (1976-08-01), Harrison et al.
patent: 3981793 (1976-09-01), Christie et al.
patent: 3981942 (1976-09-01), Zabransky
patent: 3999959 (1976-12-01), Bajek
patent: 4262791 (1981-04-01), Lynch et al.
patent: 4578151 (1986-03-01), Soderstrom, III et al.
patent: 4667508 (1987-05-01), Soderstrom, III et al.

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