Hydrovisbreaking of hydrocarbon polymers
AssigneePhillips Petroleum Company
InventorsMarvin M. Johnson, Fernando C. Vidaurri, Jr., William R. Coutant, Kenneth S. Wheelock
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Abstract
A method is provided for hydrovisbreaking hydrocarbon polymers, particularly those derived from scrap articles, in which a mixture of at least one hydrocarbon polymer and a solvent is contacted with hydrogen under conditions sufficient to hydrovisbreak the polymer. The solvent comprises a combined weight percentage of C.sub.n H.sub.2n-8 and C.sub.n H.sub.2n-10 hydrocarbons of at least about 10 weight percent, where n is an integer of at least 8 in C.sub.n H.sub.2n-8 and n is an integer of at least 10 in C.sub.n H.sub.2n-10. The hydrovisbroken polymer can be fed to a catalytic cracker for cracking to cracked products.
Claims8
A method comprising:
- (a) providing a mixture of at least one hydrocarbon polymer and a solvent, wherein the solvent comprises a combined weight percentage of C.sub.n H.sub.2n-8 and C.sub.n H.sub.2n-10 hydrocarbons of at least about 10 weight percent, where n is an integer of at least 8 in C.sub.n H.sub.2n-8 and n is an integer of at least 10 in C.sub.n H.sub.2n-10 ;
- (b) contacting the mixture, having said at least one hydrocarbon polymer at least partially dissolved in the solvent, with hydrogen under conditions which include a temperature of about 750.degree. F.-1200.degree. F. and a pressure of about 700-2000 psig, and which are sufficient to hydrovisbreak said at least one hydrocarbon polymer, thereby producing a product containing a fraction which comprises hydrovisbroken polymer.
Dependencies are inferred from the claim text.