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US 9,751,817 B2Granted
Combined reactor effluent and regenerant recirculation for detergent alkylation process
AssigneeUop LLC
InventorsPriyesh Jayendrakumar Jani, Soumendra Mohan Banerjee, Stephen Wayne Sohn
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Abstract
A process for producing alkylaromatic compounds is described. The process involves utilizing at least a portion of the aromatic compound used to regenerate the alkylation catalyst in a spent alkylation reaction zone as a reactant in the active alkylation reaction zone. The process further includes utilizing a portion of the process stream leaving the alkylation zone as a recycle stream to the alkylation zone.
Claims20
A process for producing an alkylated aromatic compound comprising:
- passing an aromatic feedstock comprising aromatic compounds and an olefin feedstock comprising olefins having from 8 to 20 carbon atoms to an alkylation reaction zone under alkylation reaction conditions to generate an alkylation process stream comprising alkylated aromatic compounds, and unreacted aromatic compounds;
- passing a first portion of the alkylation process stream to a separation unit to generate a first stream comprising unreacted aromatic compounds, a second stream comprising monoalkylated aromatic compounds and a third stream comprising heavies;
- regenerating a spent alkylation reaction zone comprising a catalyst by passing an aromatic compound stream through the spent alkylation zone at a regeneration temperature to provide a regeneration stream comprising aromatic compounds;
- passing at least about 80 wt % of the regeneration stream directly to the alkylation reaction zone;
- and
- passing a second portion of the alkylation process stream to the alkylation reaction zone.
3 more elements
A process for producing an alkylated aromatic compound comprising:
- passing an aromatic stream to a spent alkylation reaction zone to regenerate the spent alkylation reaction zone at a regeneration conditions to provide a regenerated alkylation reaction zone and generating a regeneration stream comprising aromatic compounds;
- passing a first portion comprising at least about 80 wt % of the regeneration stream directly and an olefin feedstock comprising olefins to an alkylation reaction zone operated at alkylation reaction conditions to generate an alkylation process stream comprising alkylated aromatic compounds, and unreacted aromatic compounds;
- passing a first portion of the alkylation process stream to a separation zone to generate a first stream comprising unreacted aromatic compounds, a second stream comprising monoalkylated aromatic compounds and a third stream comprising heavies;
- and
- passing a second portion of the alkylation process stream to the alkylation reaction zone.
2 more elements
Dependencies are inferred from the claim text.