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:
Jun. 23, 1987
Filed:
Feb. 24, 1986
Applicant:
Inventor:
Fred P Apffel, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 17 ; 62 20 ; 62 28 ; 55 68 ;
Abstract
A process is disclosed for the separation of hydrocarbon feed gas mixture containing methane and carbon dioxide, as well as other components such as ethane propane-and-heavier hydrocarbon, hydrogen sulfide, nitrogen, or other lighter inert gases, into various components. The steps of separation include distillation and absorption. These separations operate at temperatures and pressures such that the freezing or formation of solid carbon dioxide will not occur. The process utilizes four distillation units and one absorption unit.