Patent · US Active

Ionic liquid catalyst regeneration

US10625252B2 · kind B2 · utility

0Cited by
9References
20Claims
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Assignee

Inventors

Key dates

Filing dateJun 18, 2018
Grant dateApr 21, 2020
Priority date
Expiry dateDec 13, 2038

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02P20/584
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Processes for regenerating ionic liquid catalyst in which reaction vessel is operated under conditions sufficient to perform, in the presence of an ionic liquid catalyst, a hydrocarbon conversion reaction and provide a reaction effluent. The reaction effluent is separated into a hydrocarbon phase and a spent ionic liquid catalyst, wherein the spent ionic liquid catalyst includes conjunct polymer. The spent ionic liquid catalyst is contacted with hydrogen in a regeneration zone at conditions sufficient to reduce an amount of conjunct polymer in the spent ionic liquid catalyst to provide a regenerated effluent. The regenerated effluent is separated into a liquid phase comprising regenerated ionic liquid catalyst and a vapor phase comprising hydrogen and hydrogen chloride. The hydrocarbon phase is separated into a plurality of liquid hydrocarbon streams. The vapor phase is isolated from the liquid hydrocarbon streams. Alkylation processes are also disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.