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:
Mar. 11, 1980
Filed:
Jul. 07, 1978
Charles C Chapman, Bartlesville, OK (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
In an acid catalyzed alkylation system, a prefractionated reactor hydrocarbon effluent bottoms stream, substantially free of HF, is passed to a propane concentrator in order to provide for a more concentrated and desirable feed for the depropanizer. Due to the highly concentrated propane stream fed to the depropanizer, the size of the depropanizer can be much smaller thereby saving in energy. Hot overhead vapor from the isostripper is also passed in an indirect heat exchange relationship with various feed streams and fractionators in order to supply heat for the preheating of the feed streams and the reboiling of the fractionators. The bottoms fraction of the isostripper can also be passed in an indirect heat exchange relationship with various feed streams and fractionators. The alkylation process, therefore, maximizes the use of available waste heat and reduces the pressure and utilities on the depropanizer thereby saving greatly on energy costs.