Patent · US Active

System for catalytically converting oxygenates and regenerating and stripping catalyst

US8017083B2 · kind B2 · utility

2Cited by
20References
12Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 21, 2008
Grant dateSep 13, 2011
Priority date—
Expiry dateNov 21, 2029

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S502/514
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A system of converting oxygenate-containing feedstock to light olefins comprises charging a reactor with catalyst, feeding the feedstock into the reactor, contacting the feedstock with the catalyst and converting the feedstock to olefins while depositing byproducts on catalyst resulting in spent catalyst, regenerating the spent catalyst by combustion gases, and stripping the regenerated catalyst of gases entrained in the regenerating step. The stripping step is accomplished using nitrogen gas to strip the entrained gases from the regenerate catalyst. In one embodiment, regenerated catalyst is passed through a regenerated catalyst stripper before it is returned to the reactor.

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