Decoupled flow and pressure setpoints in an extraction instrumen

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

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210635, 210656, 210659, 210137, 210143, 2101982, 95 19, 95 82, 95 86, 96103, 203 49, 436161, B01D 1508

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active

053226267

ABSTRACT:
Methods and apparatus for extracting sample components from complex matrices using supercritical fluid as the principal extracting solvent are disclosed. The invention takes advantage of the fact that the solvent power of a supercritical fluid is stepwise settable by the parameters of density, modifier concentration, and temperature. Accordingly, methods and apparatus for extracting a component from a sample using fluid flow system having a variable and controllable flow restriction are disclosed. The methods of the present invention comprise the steps of inserting the sample into the sample container section, inputting temperature, pressure, flow rate and extraction time set points. Flow rate is controlled and system pressure regulated by the variable flow restriction. The output stream from the extraction is then expanded through a nozzle and into a trap. In certain embodiments, the trap is filled with chemically active packing material. In other embodiments, a fractionation zone and other analytical instruments are coupled to the apparatus of the present invention. Methods and apparatus for rinsing the extraction instrument and for diluting the extraction fluid are also disclosed. Methods for operating a supercritical fluid extraction systems comprising a pressure and thermal control systems which are programmable to regulate the system to maintain such values within the design specifications during the extraction process.

REFERENCES:
patent: 3046098 (1962-07-01), Brasseur et al.
patent: 4168324 (1979-09-01), Roselius et al.
patent: 4246291 (1981-01-01), Prasad et al.
patent: 4247385 (1981-01-01), Gorin
patent: 4250331 (1981-02-01), Shimshick
patent: 4283280 (1981-08-01), Brownlee
patent: 4308200 (1981-12-01), Fremont
patent: 4313828 (1982-02-01), Brownlee
patent: 4341804 (1982-07-01), Prasad et al.
patent: 4345976 (1982-08-01), Peter et al.
patent: 4349415 (1982-09-01), DeFilippi et al.
patent: 4354922 (1982-10-01), Derbyshire et al.
patent: 4363717 (1982-12-01), Pelrine et al.
patent: 4375387 (1983-03-01), deFilippi et al.
patent: 4388171 (1983-06-01), Corcoran et al.
patent: 4397731 (1983-08-01), Warzel
patent: 4400559 (1983-08-01), Bhise
patent: 4406742 (1983-09-01), Dick
patent: 4422966 (1983-12-01), Amer
patent: 4437938 (1984-03-01), Bhise et al.
patent: 4437939 (1984-03-01), Bhise et al.
patent: 4438816 (1984-03-01), Urban et al.
patent: 4447310 (1984-05-01), Derbyshire et al.
patent: 4448669 (1984-05-01), Scinta
patent: 4449586 (1984-05-01), Urban et al.
patent: 4451363 (1984-05-01), Brownlee et al.
patent: 4451364 (1984-05-01), Higgins et al.
patent: 4457812 (1984-07-01), Rado
patent: 4457846 (1984-07-01), Munk
patent: 4474994 (1984-10-01), Makin
patent: 4478715 (1984-10-01), Goodnight, Jr.
patent: 4493797 (1985-01-01), Avedesian
patent: 4495095 (1985-01-01), Lawson et al.
patent: 4500432 (1985-02-01), Poole
patent: 4512899 (1985-04-01), Goodnight, Jr.
patent: 4547292 (1985-10-01), Zarchy
patent: 4568495 (1986-02-01), Frihart
patent: 4584140 (1986-04-01), Blewett et al.
patent: 4597943 (1986-07-01), Sugiyama et al.
patent: 4601906 (1986-07-01), Shindler
patent: 4632837 (1986-12-01), Schutz et al.
patent: 4816159 (1989-03-01), Khosah
patent: 4840730 (1989-06-01), Saxena
patent: 4871453 (1989-10-01), Kumar
patent: 4892654 (1990-01-01), Nickerson
patent: 4913821 (1990-04-01), Melcher et al.
patent: 4969993 (1990-11-01), Nash
patent: 4984602 (1991-01-01), Salto et al.
patent: 5004538 (1991-04-01), Apfel
patent: 5009778 (1991-04-01), Nickerson
patent: 5013443 (1991-05-01), Higashidate
patent: 5094741 (1992-03-01), Frank
patent: 5133859 (1992-07-01), Frank
patent: 5151178 (1992-09-01), Nickerson
patent: 5240603 (1993-08-01), Frank
Abstract of Japan Patent No. 60291155, Patent Abstracts of Japan, vol. 011-378 Dec. 24, 1985, p. 1.

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