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:
Jan. 07, 1986
Filed:
Aug. 23, 1984
DM International Inc., Houston, TX (US);
Abstract
Disclosed is a method and apparatus for separating and purifying carbon dioxide and natural gas contained in the associated gas of an oil well. Feed containing hydrocarbons, carbon dioxide, water and hydrogen sulfide, is fed to a stabilizer column where heavy hydrocarbons and water are removed. Hydrogen sulfide is then stripped from the gas in a carbon dioxide fractionator using a solvent which absorbs H.sub.2 S and increases the relative volatility of carbon dioxide to hydrogen sulfide. Overhead from the CO.sub.2 fractionator contains carbon dioxide and light hydrocarbons, which are then separated in a demethanizer column which produces liquid carbon dioxide as a bottoms product. The invention is particularly useful in recovering carbon dioxide from the associated gas of oil produced from enhanced oil recovery processes using carbon dioxide injection.