Cryogenic treatment of landfill gas to remove troublesome compou

Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

62634, F25J 300

Patent

active

055968848

ABSTRACT:
The cryogenic treatment of landfill gas removes troublesome compounds that cause severe corrosion of combustion engines in which the gas is used as fuel. It involves compressing the gas to an elevated pressure and isenthalpically expanding the gas to chill the gas to a temperature below -20 .degree. F. The compressed gas is first cooled to eliminate moisture as condensate. Methanol is injected into the gas so that it can be deeply chilled without forming ice with residual moisture in the gas. An aqueous methanol condensate containing troublesome compounds forms in, and is removed from, the deeply chilled gas before it is expanded to provide refrigeration for chilling the gas. By adding water to the aqueous methanol, the troublesome compounds lose solubility in diluted methanol and form a supernatant layer that can be separated for disposal. The diluted methanol can be recycled.

REFERENCES:
patent: 4266958 (1981-05-01), Cummings
patent: 4406774 (1983-09-01), Cummings et al.
patent: 4711093 (1987-12-01), Markbreiter et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Cryogenic treatment of landfill gas to remove troublesome compou does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cryogenic treatment of landfill gas to remove troublesome compou, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryogenic treatment of landfill gas to remove troublesome compou will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-935979

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.