Selective hydrogenation of dienes
AssigneeFina Technology, Inc.
InventorsKevin Peter Kelly, James Roy Butler
Life of this patent
Estimating the term…
Abstract
A process is provided for the selective hydrogenation of dienes from a mixed hydrocarbon stream. The catalyst contains nickel in an amount between approximately 5 and 15 weight percent and, alternatively, may contain nickel oxide and molybdenum oxide in an amount between approximately 3 to 6 and 12 to 25 weight percent, respectively. The catalyst metals are on an aluminum oxide support. The process does not require any activation or pre-treatment of the catalyst. No sulfur is added to the reaction zone and the catalyst is not adversely affected by the presence of up to 0.20% by weight of sulfur in the feed stream. According to the process, conjugated dienes are reduced by at least 80 to 90%.
Claims20
A process of selectively hydrogenating dienes present in a mixed hydrocarbon feed stream comprising essentially hydrocarbons in the range of 5 to 15 carbon atoms or a naphtha stream from a fluid catalytic cracking unit in a refinery, contacting said feed in a reaction zone in the presence of hydrogen at selective hydrogenation conditions with a catalyst comprising nickel on an aluminum oxide support and recovering an effluent stream from said reaction zone, wherein said effluent stream contains at least 80 to 90% less conjugated dienes than said mixed hydrocarbon feed stream.
A process of selectively hydrogenating dienes present in a mixed hydrocarbon feed stream comprising essentially hydrocarbons in the range of 5 to 15 carbon atoms or a naphtha stream from a fluid catalytic cracking unit in a refinery, wherein said feed stream comprises up to 0.20% by weight sulfur, contacting said feed in a reaction zone in the presence of hydrogen at selective hydrogenation conditions with a catalyst comprising nickel on an aluminum oxide support, wherein said catalyst contains an amount of nickel with the range of 5 to 15% by weight, and recovering an effluent stream from said reaction zone, wherein said effluent stream contains at least 80 to 90% less conjugated dienes than said mixed hydrocarbon feed stream.
A process of selectively hydrogenating dienes present in a mixed hydrocarbon feed stream comprising essentially hydrocarbons in the range of 5 to 15 carbon atoms or a naphtha stream from a fluid catalytic cracking unit in a refinery, contacting said feed in a reaction zone in the presence of hydrogen at selective hydrogenation conditions with a catalyst consisting essentially of nickel oxide and molybdenum oxide on an alumina support and recovering an effluent stream from said reaction zone, wherein said effluent stream contains at least 80 to 90% less conjugated dienes than said mixed hydrocarbon feed stream.
A process of selectively hydrogenating dienes present in a mixed hydrocarbon feed stream comprising essentially hydrocarbons in the range of 5 to 15 carbon atoms or a naphtha stream from a fluid catalytic cracking unit in a refinery, said feed stream containing up to 0.20% by weight sulfur, contacting said feed in a reaction zone in the presence of hydrogen at selective hydrogenation conditions with a catalyst consisting essentially of nickel oxide and molybdenum oxide on an alumina support, wherein said catalyst contains 3 to 6% by weight nickel oxide and 12 to 25% by weight molybdenum oxide, and recovering an effluent stream from said reaction zone, wherein said effluent stream contains at least 80 to 90% less conjugated dienes than said mixed hydrocarbon feed stream.
Dependencies are inferred from the claim text.