Refrigeration – Low pressure cold trap process and apparatus
Patent
1993-03-09
1993-11-16
Bennet, Henry A.
Refrigeration
Low pressure cold trap process and apparatus
62 9, 62 11, 62 23, 62 40, 422 31, 55267, B01D 800, A61L 200, F25J 100
Patent
active
052612503
ABSTRACT:
A vapor recovery apparatus which withdraws multicomponent vapor mixtures from processing apparatus (such as gas sterilizers) by condensation at two or more progressively colder levels while maintaining an appropriate balance between components during steps of capture and phase change. Two cold traps provide progressive partial condensation at multiple temperature levels and serve to reduce input energy requirements at least 50% compared to a single cold level. The components in the recovered mixture may include (a) recyclable ozone depleting, global warming and valuable CFCs or HCFCs, (b) hazardous materials and (c) contaminants such as water vapor and air. The system maintains safe balance of component materials by immediately and constantly draining the condensate from a warmer temperature stage into the liquid holding section of a colder trapping zone. The system separates vestigial air or air used as a carrier gas from the condensed mixture, and purges it without an unacceptable release of recyclable materials and also it controls water vapor so that frost or ice can not impair performance. After the cryocondensation procedure, valves isolate the system from the processing apparatus, and the system warms the captured condensate to above room temperature. Warming the condensate pressurizes it for transfer to a vessel used for shipping the captured mixtures for reclaiming and reuse. Opening a drain valve in the second cold trap allows captured condensate to flow from the now higher pressure recovery system to the transport vessel without any mechanical pump.
REFERENCES:
patent: 622936 (1899-04-01), Whiting et al.
patent: 2242299 (1941-05-01), Harrington
patent: 2274094 (1942-02-01), Rupp
patent: 3075362 (1963-01-01), Becker
patent: 3238633 (1966-03-01), Hackenberg
patent: 3633371 (1972-01-01), Davison
patent: 3766714 (1973-10-01), Cunningham et al.
patent: 4249917 (1981-02-01), Tarancon
patent: 4538423 (1985-09-01), LeDiouron
patent: 4551197 (1985-11-01), Guilmette et al.
patent: 4555251 (1985-11-01), Jonsson et al.
patent: 4666480 (1987-05-01), Mann
patent: 4668261 (1987-05-01), Chatzipetros et al.
patent: 4822563 (1989-04-01), Joslyn
patent: 4954315 (1990-09-01), Brahmbhatt
patent: 5069686 (1991-12-01), Baker et al.
patent: 5073896 (1991-12-01), Reid
patent: 5108475 (1992-04-01), Briggs
patent: 5128101 (1992-07-01), Boynton
Bennet Henry A.
Kilner Christopher B.
Polycold Systems International
LandOfFree
Method and apparatus for recovering multicomponent vapor mixture does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for recovering multicomponent vapor mixture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for recovering multicomponent vapor mixture will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-15189