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US 5,326,466 AGranted
Distillate dewaxing reactor system integrated with olefin upgrading
AssigneeMobil Oil Corporation
InventorMohsen N. Harandi
Life of this patent
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Abstract
Catalytic dewaxing of distillate feedstock is carried out concurrently with upgrading of olefins by oligomerization to produce fuel products.
Claims21
A process for the production of fuel and dewaxed distillate products, comprising:
- contacting hydrocarbon feedstreams comprising C.sub.5 +olefinic hydrocarbon and high pour point distillate rich in waxy n-paraffins with a fluidized bed of acidic shape selective medium pore metallosilicate catalyst particles under reaction conditions comprising temperature of 340.degree. C. to 380.degree. C. and weight hourly space velocity greater than 0.1/hr, based on olefin feed, to oligomerize said olefinic hydrocarbons concurrently, while cracking and/or isomerizing said n-paraffins, whereby an effluent vapor is produced containing products comprising fuel range hydrocarbon product and dewaxed distillate product having a low pour point.
An integrated process for the production and separation of C.sub.5 + gasoline and dewaxed distillate products, comprising:
- cracking hydrocarbon feedstock to provide a crackate comprising C.sub.5 -C.sub.12 hydrocarbons containing olefins and distillate rich in waxy n-paraffins;
- fractioning said crackate and passing a portion of said light hydrocarbons containing olefins plus said distillate to a fluidized bed reaction zone containing acidic shape selective metallosilicate catalyst particles under reaction conditions sufficient to concurrently oligomerize said propene while cracking and/or isomerizing said distillate n-paraffins, whereby an effluent vapor is produced containing products comprising C.sub.5 + gasoline and dewaxed distillate having a low pour point;
- passing at least a portion of said effluent to an absorber in contact with lean oil from said cracking process main fractionator and recovering rich oil containing said products;
- recycling said rich oil to said main fractionator;
- and separating and recovering said products.
2 more elements
Dependencies are inferred from the claim text.