Pressure swing adsorption process with multiple desorption steps

Details Pressure swing adsorption process with multiple desorption steps Pressure swing adsorption process with multiple desorption steps

1992-02-21

1993-04-20

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 33, 55 58, 55 62, 55 68, 55 70, 55 73, B01D 5304

Patent

active

052038882

ABSTRACT:
Pressure swing absorption processes are disclosed which employ a standard pressure swing absorption cycle comprising the steps of adsorption, one or more cocurrent depressurization steps for equalization or providing purge gas, a countercurrent depressurization step, a countercurrent purge step, and repressurization steps. The processes of the present invention also include an additional countercurrent desorption step performed in conjunction with the first countercurrent desorption step at above atmospheric pressure and a countercurrent purge step at about the adsorption temperature which can provide increased capacity and recovery as compared to PSA processes that only have one countercurrent depressurization step or otherwise do not have a countercurrent purge step. Preferably the pressure reduction during the second countercurrent depressurization step is accomplished by passing another stream from the process, such as the effluent from the first countercurrent desorption step, as a motive gas through an ejector which is in operative communication with the adsorber bed undergoing the second countercurrent desorption step.

REFERENCES:
patent: 3141748 (1964-07-01), Hoke et al.
patent: 3430418 (1969-03-01), Wagner
patent: 3564816 (1971-02-01), Batta
patent: 3696588 (1972-10-01), Dussourd et al.
patent: 3834136 (1974-09-01), Dussourd et al.
patent: 3934989 (1976-01-01), Haugen
patent: 3986849 (1976-10-01), Fuderer et al.
patent: 4061724 (1977-12-01), Grose et al.
patent: 4073865 (1978-02-01), Flanigen et al.
patent: 4077779 (1978-03-01), Sircar et al.
patent: 4171207 (1979-10-01), Sircar
patent: 4261716 (1981-04-01), Schwartz et al.
patent: 4261716 (1981-04-01), Schwartz et al.
patent: 4310440 (1982-01-01), Wilson et al.
patent: 4331456 (1982-05-01), Schwartz et al.
patent: 4375363 (1983-03-01), Fuderer
patent: 4440871 (1984-04-01), Lok et al.
patent: 4512780 (1985-04-01), Fuderer
patent: 4539020 (1985-09-01), Sakuraya et al.
patent: 4567027 (1986-01-01), Detournay et al.
patent: 4589888 (1986-05-01), Hiscock et al.
patent: 4608061 (1986-08-01), Volles et al.
patent: 4650500 (1987-03-01), Patel
patent: 4717397 (1988-01-01), Wiessner et al.
patent: 4726816 (1988-02-01), Fuderer
patent: 4755361 (1988-07-01), Fuderer
patent: 4755396 (1988-07-01), Geisler et al.
patent: 4781735 (1988-11-01), Tagawa et al.
patent: 4813980 (1989-03-01), Sircar
patent: 4834780 (1989-05-01), Benkmann
patent: 4915711 (1990-04-01), Kumar
patent: 4964889 (1990-10-01), Chao
R. H. Perry & C. H. Chilton, Chemical Engineer's Handbook, 5th Edition, Chapter 6, pp. 29-32, McGraw Hill, Inc. 1973.
D. W. Breck, Zeolite Molecular Sieves, John Wiley & Sons, 1984, pp. 348.sub.]352, 754, title page and Table 4.26.

Affiliated with

Also associated with

Rating

Pressure swing adsorption process with multiple desorption steps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressure swing adsorption process with multiple desorption steps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure swing adsorption process with multiple desorption steps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1523327