Patent · US Expired

Process for separating catalytic coal gasification chars

US4682986A · kind A · utility

53Cited by
10References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 29, 1984
Grant dateJul 28, 1987
Priority date—
Expiry dateNov 29, 2004

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10J2300/1807
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Carbon and catalyst containing chars obtained from a catalytic coal gasification or combustion operation may be separated into two layers of fractions by contacting them with an inert gas so as to fluidize them and thereby separately recover fractions of carbon-rich chars and fractions of carbon-poor chars, and collecting the separate fractions. The carbon-rich chars may then be recycled to the gasifier to be gasified, and the carbon-poor chars may be treated to recover the catalyst. Larger catalyst containing chars may be effectively separated in the presence of a host medium of a bed of solids fluidized by the inert gas. Smaller chars may be separated in the absence of such a host medium.

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