Method for gasifying or combusting solid carbonaceous material
US4929255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1988 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Aug 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1884
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for gasifying or combusting solid, carbonaceous material in a circulating fluidized bed reactor. Particles are separated from the product gas at least in two stages so that in the first stage, mainly coarser, so-called circulating particles are separted and returned to the reactor. In the second stage, fine carbonaceous particlates are separated from the gas and are made to agglomerate at a raised temperature. Coarser particles thus recieved are returned to the reactor through a return duct together with circulating particles. Adhesion of agglomerating particles to the walls of the duct is prevented preferably by leading hot particulates to the center of the duct and circulating particles to the walls of the duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.