Regeneration of a dehydrogenation catalyst slip-stream

US11926800B2 · kind B2 · utility

Assignee

• UOP LLC · US

Inventors

• Avram M. Buchbinder · Chicago, US
• John J. Senetar · Des Plaines, US
• Wei Pan · Hoffman Estates, US
• Wolfgang A. Spieker · Glenview, US
• Richard A. Johnson · Murrysville, US

Key dates

• Filing date: Jan 12, 2022
• Grant date: Mar 12, 2024
• Expiry date: Jan 12, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A fluidized catalytic reactor system cycles from 0.05-5% of catalyst at a time through a rejuvenation unit to be heated in the presence of oxygen to maintain catalyst activity. The use of the rejuvenation unit that may be 2% of the size of the main catalyst regeneration unit allows for reduction in equipment size and in catalyst inventory. The catalyst that is sent to the rejuvenation unit may be spent catalyst but may be partially or fully regenerated catalyst. The rejuvenation unit may be heated by combusting fuel or by hot flue gas.