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:
Sep. 24, 1985
Filed:
Jan. 17, 1985
Ronald M Gould, Sewell, NJ (US);
Samuel A Tabak, Wenonah, NJ (US);
Mobil Oil Corporation, New York, NY (US);
Abstract
A process for converting oxygenated feedstock comprising methanol, dimethyl ether or the like to liquid hydrocarbons comprising the steps of contacting the feedstock with zeolite catalyst in a primary catalyst stage at elevated temperature and moderate pressure to convert feedstock to hydrocarbons comprising C.sub.2 -C.sub.4 olefins and C.sub.5.sup.+ hydrocarbons; cooling and separating effluent from the primary stage to recover a liquid hydrocarbon stream and a light hydrocarbon vapor stream rich in C.sub.2 -C.sub.4 olefins; compressing the olefinic light hydrocarbon stream to condense a liquid olefinic hydrocarbon stream rich in C.sub.3.sup.+ olefins and recovering an ethene-rich gaseous stream; further pressurizing and contacting the condensed liquid olefinic hydrocarbon stream in a secondary catalytic stage with oligomerization catalyst comprising medium-pore shape selective acidic zeolite at substantially increased pressure and moderate temperature to convert at least a portion of olefins to a heavier liquid hydrocarbon product stream comprising olefinic gasoline and distillate range liquids; and recovering ethene in a gaseous stream for recycle to the primary catalytic stage.