The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1996
Filed:
Oct. 12, 1994
Applicant:
Inventor:
John W Bjerklie, Upper St. Clair, PA (US);
Assignee:
Consolidated Natural Gas Service Company, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 10 ; 62 543 ; 62320 ;
Abstract
Fugitive methane or natural gas vapors are recovered from a handling or delivery system and are blown through solid methane chips or a slush of solid and liquid methane. The solid methane melts and cools the vapors below the vaporization temperature to condense them. The condensed vapors and melted solid can be mixed with liquid methane for use therewith. The solid methane is produced by cooling liquid methane or natural gas in a liquid nitrogen heat exchanger or refrigerator. The liquid methane is solidified in a sheet on an endless belt, which breaks the sheet into pieces at a tail section.