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:
Aug. 17, 1982
Filed:
Aug. 12, 1980
David L Rogers, Demopolis, AL (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Methylacetylene is removed prior to unduly raising its temperature from a stream containing the same but thus to minimize any danger of violent decomposition or explosion or coke formation. In one embodiment, a stream is obtained from the cracking of propane to produce ethylene, is fractionated to obtain a concentrate of methylacetylene and any propadiene which may be present, the concentrate is subjected to hydrogenation, thus converting methylacetylene and propadiene to propylene and the propylene is recovered. A fractionation tower or system operation is shown wherein a propane-propylene concentrate from an ethylene fractionation unit is fed to a fractionator from which non-condensibles and propylene are taken off as overhead, and upper sidedraw, respectively, an intermediate fraction containing methylacetylene and propadiene which may be present is taken from the system for hydrogenation, the hydrogenated stream being returned to the fractionator, and a bottoms yield, which is reboiled, is drawn off and can be sent for further cracking, as to produce ethylene.