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US 2020/0368709 A1Published application
Flexible production of gasoline and jet fuel in alkylation reactor
AssigneeLummus Technology Inc.
InventorsZan Liu, Jackeline Medina Bolívar, Maurice Korpelshoek, Romain Lemoine, Manoj Som
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Abstract
Systems and processes for the flexible production of gasoline and jet fuel via alkylation of C4 and C5 olefins.
Claims22
A system for flexible production of gasoline and jet fuel, the system comprising:
- an alkylation reaction zone comprising one or more reactors for reacting C4 olefins, C5 olefins, C6 olefins, C4-C5 olefins, or C4-C6 olefins with C4-C6 isoparaffins in the presence of sulfuric acid alkylation catalyst to produce a hydrocarbon effluent and a spent acid stream;
- a flow line for providing C4 olefins to the alkylation reaction zone;
- a flow line for providing C5 olefins to the alkylation reaction zone;
- a flow line for providing fresh acid alkylation catalyst to the alkylation reaction zone;
- a deisobutanizer for separating the hydrocarbon effluent into an isobutane fraction, a n-butane fraction, and a C5+ fraction;
- a deisopentanizer for separating the C5+ fraction into an isopentane fraction and a C6+ fraction;
- a splitter for separating the C6+ fraction into a light alkylate overhead fraction and a heavy alkylate bottoms fraction;
- a flow system for recycling the isobutane fraction to the alkylation reaction zone, recovering the isobutane fraction as an isobutane product, and both recycling a portion of the isobutane fraction to the alkylation reaction zone and recovering a portion of the isobutane fraction as an isobutane product;
- a flow system for recycling the isopentane fraction to the alkylation reaction zone, recovering the isopentane fraction as an isopentane product, and both recycling a portion of the isopentane fraction to the alkylation reaction zone and recovering a portion of the isopentane fraction as an isopentane product;
- a flow system for recycling the light alkylate fraction to the alkylation reaction zone, recovering the light alkylate as a light alkylate product, and both recycling a portion of the light alkylate fraction to the alkylation reaction zone and recovering a portion of the light alkylate fraction as a light alkylate product.
7 more elements
A system for flexible production of gasoline and jet fuel, the system comprising:
- an alkylation reaction zone comprising one or more reactors for reacting C4 olefins, C5 olefins, C6 olefins, C4-05 olefins, or C4-C6 olefins with isoparaffins in the presence of sulfuric acid alkylation catalyst to produce a hydrocarbon effluent and a spent acid stream;
- a flow line for providing C4 olefins to the alkylation reaction zone;
- a flow line for providing C5 olefins to the alkylation reaction zone;
- a flow line for providing fresh acid alkylation catalyst to the alkylation reaction zone;
- a deisobutanizer for separating the hydrocarbon effluent into an isobutane fraction, a n-butane fraction, and a C5+ fraction;
- a deisopentanizer for separating the C5+ fraction into an isopentane fraction and a C6+ fraction;
- a splitter for separating the C6+ fraction into a light alkylate overhead fraction and a heavy alkylate bottoms fraction;
- a flow system for recycling the isobutane fraction to the alkylation reaction zone, recovering the isobutane fraction as an isobutane product, and both recycling a portion of the isobutane fraction to the alkylation reaction zone and recovering a portion of the isobutane fraction as an isobutane product;
- a flow system for recycling the isopentane fraction to the alkylation reaction zone, recovering the isopentane fraction as an isopentane product, and both recycling a portion of the isopentane fraction to the alkylation reaction zone and recovering a portion of the isopentane fraction as an isopentane product;
- and
- a control system configured to adjust a flow rate of each of the C4 olefins, C5 olefins, the recycle isobutane fraction, and the isopentane recycle fraction to the alkylation reaction zone to selectively increase or decrease a ratio of gasoline to jet fuel range hydrocarbons produced in the alkylation reaction zone.
8 more elements
A process for flexible production of gasoline and jet fuel, the process comprising:
- feeding isoparaffins and olefins, including C4 and/or C5 olefins, to an alkylation reaction zone comprising one or more reactors for reacting the C4-C5 olefins with the isoparaffins in the presence of sulfuric acid alkylation catalyst to produce a hydrocarbon effluent and a spent acid stream;
- separating the hydrocarbon effluent into an isobutane fraction, a n-butane fraction, and a C5+ fraction;
- separating the C5+ fraction into an isopentane fraction and a C6+ fraction;
- separating the C6+ fraction into a light alkylate overhead fraction and a heavy alkylate bottoms fraction;
- alternately:
- increasing a ratio of gasoline to jet fuel range hydrocarbons in the alkylate;
- and
- decreasing a ratio of gasoline to jet fuel range hydrocarbons in the alkylate.
5 more elements
Dependencies are inferred from the claim text.