Method of improving alkylate yield in an alkylation reaction
AssigneeABB Lummus Global Inc.
InventorVincent James D'Amico
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Abstract
A method of operation wherein catalytic reactors which cycle between reaction mode and catalyst regeneration mode have their contents exchanged with each other at the beginning of each cycle in order to increase the yield of the desired product. This exchange increases said yield by minimizing the contact of reactant in reaction mode with regenerant utilized in regeneration mode, thereby reducing/preventing the undesirable alternate reaction between the two, which consumes said reactant making it unavailable for the production of the desired product.
Claims8
A method of producing high yield of alkylate product from a solid acid catalyst alkylation process having a first reactor and a second reactor, the method comprising the steps of:
- exchanging the liquid phase hydrogen contents of the first reactor with the liquid phase olefin contents of the second reactor prior to alkylating an amount of an alkylatable organic compound in the first reactor and regenerating an amount of spent solid acid catalyst in the second reactor.
A method of producing high yield of alkylate product from an alkylation process utilizing first and second reactors having a liquid content comprising the steps of:
- reacting an alkylatable organic compound with an alkylation agent in a first reactor containing a first solid acid catalyst to produce an alkylate product;
- contacting a saturated hydrocarbon with hydrogen in a second reactor containing a second solid acid catalyst to regenerate the second solid acid catalyst;
- exchanging the liquid contents of the first reactor with the liquid contents of the second reactor upon regeneration of an amount of the second solid acid catalyst in the second reactor;
- reacting the alkylatable organic compound and the alkylation agent in the second reactor using the regenerated second solid acid catalyst to produce an alkylate product;
- and
- contacting the saturated hydrocarbon and the hydrogen in the first reactor to regenerate the first solid acid catalyst in the first reactor.
A method of producing high yield of alkylate product from a solid acid catalyst alkylation process comprising the steps of:
- supplying an olefin feed stream and a saturated isoparaffin hydrocarbon feed stream to an alkylation reactor;
- reacting at least a portion of the olefin feed stream with at least a portion of the saturated isoparaffin hydrocarbon feed stream in the alkylation reactor to produce an alkylate product stream utilizing a first portion of the alkylate product stream as an alkylation reactor recycle stream;
- supplying a hydrogen feed stream and a second portion of the alkylate product stream to the regeneration reactor;
- contacting the hydrogen stream with the second portion of the alkylate product stream in the regeneration reactor to produce a regeneration product stream and a remaining amount of residual dissolved hydrogen;
- utilizing a portion of the regeneration product stream as a regeneration reactor recycle stream;
- blocking supply of olefin feed stream to the alkylation reactor;
- directing the alkylation reactor recycle stream from the alkylation reactor to the regeneration reactor until the remaining amount of residual (un-reacted) olefin in the alkylation reactor is substantially removed;
- blocking supply of hydrogen feed stream to the regeneration reactor;
- directing the regeneration reactor recycle stream from the regeneration reactor to the alkylation reactor such that the remaining amount of dissolved hydrogen in the regeneration reactor is substantially removed;
- resuming the supply of olefin feed stream to the former regeneration reactor;
- and
- resuming the supply of hydrogen feed stream to the former alkylation reactor.
Dependencies are inferred from the claim text.