Supercritical fluid chromatograph with pneumatically controlled

Details Supercritical fluid chromatograph with pneumatically controlled Supercritical fluid chromatograph with pneumatically controlled

1986-10-10

1987-08-04

Therkorn, Ernest G.

Liquid purification or separation

With means to add treating material

Chromatography

55386, 210101, 210136, 417 46, 417401, B01D 1508

Patent

active

046844651

ABSTRACT:
An apparatus for analyzing a process stream (1) via supercritical fluid chromatography including container means (10), extraction means (50) for drawing a sample volume from the process stream and injecting the sample volume into the supercritical fluid to form a dilute mix (5), analyzer means (70) for analyzing the dilute mix via supercritical fluid chromatography, sample inlet valve means (60) for receiving the dilute mix from the extraction means (50) and supplying a portion of the dilute mix to the analyzer means (70), pneumatically driven piston-type pump means (30) for drawing the substance from the container means (10) and delivering same under pressure either to the extraction means (50) or to the analyzer means (70) as desired, and control means (40) for supplying low pressure air to the pump means (30) in a controlled manner so as to draw the substance from the container means (10) and maintain the substance at a desired pressure above the supercritical pressure for delivery to the analyzer means (70) and the extraction means (50) as desired.

REFERENCES:
patent: 3362618 (1968-01-01), Fortinov
patent: 3839863 (1974-10-01), Frazier
patent: 3963383 (1976-06-01), Hill
patent: 4128476 (1978-12-01), Rock
patent: 4347131 (1982-08-01), Brownlee
patent: 4368008 (1983-01-01), Budzich
patent: 4422942 (1983-12-01), Allington
patent: 4478720 (1984-10-01), Perrut
patent: 4487080 (1984-12-01), Leaseburge
patent: 4580759 (1986-04-01), Leaseburge
patent: 4592842 (1986-06-01), Tomlinson

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