Refrigeration – Processes – Circulating external gas
Patent
1988-08-29
1989-11-07
Capossela, Ronald C.
Refrigeration
Processes
Circulating external gas
34 73, 34 79, 55 23, F25J 300
Patent
active
048789313
ABSTRACT:
Disclosed is a system for recovering vapor from an air/vapor process stream. The system is operated in two stages, a high temperature stage and a low temperature stage. The high temperature stage may be referred to as a condenser column. The low temperature stage is referred to as the stripper column. The air/solvent vapor stream is conducted first through the condenser column and then through the stripper column. A countercurrent flow of liquid solvent is provided to both the condenser column and the stripper column. In the low temperature stage (condenser column), the countercurrent flow of liquid solvent is at a temperature near but above the freezing point of water. This results in the removal of most of the solvent vapor and water vapor from the air/solvent vapor mixture. The process stream next flows through the stripper column which has a countercurrent flow of liquid solvent below the freezing point of water which serves to remove the remaining solvent vapor and water vapor contained in the process stream. The system may be operated on a once through basis although better overall recovery will be accomplished if the system is operated in a recirculation mode. Because it is operated in two stages, there is accomplished a significant reduction in the power requirements of the refrigeration system. Further, the removal of the majority of the water vapor from the process stream prior to the low temperature stage significantly reduces the problems created by fouling of the stripper column by water ice.
REFERENCES:
patent: 2006295 (1935-06-01), Chewning
patent: 2250949 (1941-07-01), Gerlach
patent: 3100693 (1963-08-01), Klein et al.
patent: 3102012 (1963-08-01), Dowd
patent: 3106462 (1963-10-01), Cottle
patent: 3122594 (1964-02-01), Kielback
patent: 3296309 (1967-01-01), Rooij
patent: 3810348 (1974-05-01), Byers et al.
patent: 3947258 (1976-03-01), Decker
patent: 4002705 (1977-01-01), McKeown
patent: 4044078 (1977-08-01), Curtis et al.
patent: 4126431 (1978-11-01), Wolowski et al.
patent: 4424680 (1984-01-01), Rothchild
patent: 4533367 (1985-08-01), Hadzismajlovic
patent: 4551981 (1985-11-01), Banerjee
patent: 4670027 (1987-06-01), Becker et al.
Bocchetti Mark G.
Capossela Ronald C.
Quadrex HPS Inc.
Reiter Barnard A.
LandOfFree
Two stage vapor recovery system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two stage vapor recovery system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two stage vapor recovery system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-81394