Enhanced helium recovery

Details Enhanced helium recovery Enhanced helium recovery

1995-08-21

1997-05-27

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

95101, 95102, 95103, 95105, 95130, 95143, B01D 5347, B01D 5322

Patent

active

056328036

ABSTRACT:
The disclosed hybrid membrane and pressure swing adsorption process can recover helium from source streams of about 0.5 to 5 percent by volume helium and concentrate the helium to a concentration of greater than about 98 percent by volume. The process comprises a membrane separation followed by two stages of pressure swing adsorption which are used in series. The source gas will primarily contain hydrocarbons but will contain some nitrogen. The membrane unit will contain a semipermeable membrane which is permeably selective for helium and will to the extent feasible reject hydrocarbons. The permeate gas will be increased in helium content by 2 to 10 times. Part of the residue gas is used in the regeneration of the adsorbent beds in the first stage of pressure swing adsorption. Each stage of pressure swing adsorption will contain a plurality of adsorbent beds, and will be cycled through multiple phases. In the first stage the adsorbent beds will sequentially undergo the phases of adsorption, recycle, depressurization, evacuation, helium pressurization and recycle feed pressurization. The product gas from the first stage is flowed to the second stage and in the second stage sequentially will undergo the phases of adsorption, depressurization, evacuation, purge, and helium pressurization. The offgas from the evacuation and purge in the second stage is flowed to input to the first stage. The process efficiently produces a product stream with a helium content of more than 98 percent by volume.

REFERENCES:
patent: 3246449 (1966-04-01), Stern et al.
patent: 3250080 (1966-05-01), Garwin
patent: 3324626 (1967-06-01), Dresser et al.
patent: 3636679 (1972-01-01), Batta
patent: 3683589 (1972-08-01), Seitz et al.
patent: 3797201 (1974-03-01), Tamura
patent: 3838553 (1974-10-01), Doherty
patent: 4077780 (1978-03-01), Doshi
patent: 4171207 (1979-10-01), Sircar
patent: 4444572 (1984-04-01), Avon et al.
patent: 4529412 (1985-07-01), Hayashi et al.
patent: 4539020 (1985-09-01), Sakuraya et al.
patent: 4578089 (1986-03-01), Richter et al.
patent: 4581044 (1986-04-01), Uno et al.
patent: 4599094 (1986-07-01), Werner et al.
patent: 4661125 (1987-04-01), Haruna et al.
patent: 4666468 (1987-05-01), Wu
patent: 4675030 (1987-06-01), Czarnecki
patent: 4687498 (1987-08-01), Maclean et al.
patent: 4689062 (1987-08-01), Maclean et al.
patent: 4690695 (1987-09-01), Doshi
patent: 4701187 (1987-10-01), Choe et al.
patent: 4705541 (1987-11-01), Sircar et al.
patent: 4711645 (1987-12-01), Kumar
patent: 4717407 (1988-01-01), Choe et al.
patent: 4732577 (1988-03-01), Koizumi et al.
patent: 4750925 (1988-06-01), Maclean et al.
patent: 4752311 (1988-06-01), Maclean et al.
patent: 4765804 (1988-08-01), Lloyd-Williams et al.
patent: 4770676 (1988-09-01), Sircar et al.
patent: 4790858 (1988-12-01), Sircar
patent: 4813977 (1989-03-01), Kumar et al.
patent: 4813980 (1989-03-01), Sircar
patent: 4836833 (1989-06-01), Nicholas et al.
patent: 4861361 (1989-08-01), Jain et al.
patent: 4863492 (1989-09-01), Doshi et al.
patent: 4869894 (1989-09-01), Wang et al.
patent: 4892565 (1990-01-01), Kumar et al.
patent: 4913709 (1990-04-01), Kumar
patent: 4914218 (1990-04-01), Kumar et al.
patent: 4915711 (1990-04-01), Kumar
patent: 5004482 (1991-04-01), Haas et al.
patent: 5006132 (1991-04-01), Dimartino et al.
patent: 5013334 (1991-05-01), Maurer
patent: 5026406 (1991-06-01), Kumar
patent: 5064446 (1991-11-01), Kusuki et al.
patent: 5080694 (1992-01-01), Knoblauch et al.
patent: 5089048 (1992-02-01), Knoblauch et al.
patent: 5112590 (1992-05-01), Krishnamurthy
patent: 5133785 (1992-07-01), Kumar et al.
patent: 5156656 (1992-10-01), Parker et al.
patent: 5171333 (1992-12-01), Maurer
patent: 5174796 (1992-12-01), Davis et al.
patent: 5207806 (1993-05-01), Lagree et al.
patent: 5224350 (1993-07-01), Mehra
patent: 5226931 (1993-07-01), Combier
patent: 5232473 (1993-08-01), Kapoor et al.
patent: 5234472 (1993-08-01), Krishnamurthy et al.
patent: 5332424 (1994-07-01), Rao et al.
patent: 5344480 (1994-09-01), Schulte et al.
patent: 5354547 (1994-10-01), Rao et al.
patent: 5382280 (1995-01-01), Choe et al.
patent: 5411721 (1995-05-01), Doshi et al.
patent: 5507856 (1996-04-01), Rao et al.
Methane/Nitrogen Gas Separation over the Zeolite Clinoptolite by the Selective Adsorption of Nitrogen-Ind. Gas Separations, 1983, Am. Chem Society Frankiewicz et al.
A Study of Heatless Adsorption on the System CO.sub.2 in He (I) Chem Eng. Science 1972, vol. 27 pp. 1449-1458 Schemdalman et al.
Study of Heatless Adsorption in the Model System CO.sub.2 in He (II); Aiche Symposium Series #134, vol. 69, 1973 Mitchell et al.
Recovery and Purification of Light Gases by PSA; Cheng et al ACS Symposium Series #223, Industrial Gas Separations 1983.
The Optimal Control of a Periodic Absorber Aiche Journal, vol. 18, No. 6 Nov. 1972 Kowler et al.
Separation of Nitrogen and Methane Via Periodic Adsorption Aiche Journal, vol. 17, #2, Mar. 1971 Turnock et al.
Separation of Helium-Methane Mixtures by PSA Aiche Journal, vol. 31, #1, Jan. 1985; Cheng et al.
Kinetic Separation by Pressure Swing Adsorption, Method & Model; Aiche Journal, vol. 36 #8, Aug. 1990 Ackley et al.
Separation of Nitrogen From Helium Using PSA; Bird et al, ADV. Cryogenic Engineering, #9 pp. 463-473 (1973).
A New Composite Adsorbent for Methane-Nitrogen Separation by Adsorption; Separation Sciences and Technology No. 257 (7&8) pp. 845-868; 1990 Bakish et al.
C. Tannehill et al.; Nitrogen Removal Costs Vary by Concentration; American Oil & Gas Reporter; May 1994.
R.J. Buras et al; Nitrogen Rejection and Pressure Swing Adsorption; Principles, Design and Remote Control Using an Expert System; Univ. of Oklahoma Conference; Feb. 28, 1994.

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