Preparing a light-olefin containing product stream from an oxygenate-containing feed stream using reactors directing a flow of a fluidized dual-function catalyst system
US7722825B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Mar 25, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/85
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a reactor system for converting an oxygenate-containing feed stream to an olefin-containing product stream. The system includes: (1) a first fluidized catalytic reactor for converting methanol to propylene, the first reactor having a fluidized catalyst system comprising a first catalyst and a second catalyst; (2) a second fluidized catalytic reactor communicating with the first fluidized catalytic reactor for cracking heavy olefins having four carbon atoms or greater into propylene, the second reactor having the fluidized catalyst system; (3) wherein the first catalyst is a non-zeolite molecular sieve catalyst; and (4) wherein the second catalyst is a zeolite molecular sieve catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.