F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 43/00 (2006.01) A61L 2/20 (2006.01) B01D 8/00 (2006.01)
Patent
CA 2104055
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 or 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. The only mechanical device employed for fluid transfer is a small vacuum pump for evacuation of air stripped of condensible materials.
Polycold Systems International
Smart & Biggar
LandOfFree
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