Gas-gas quench cooling and solids separation process
US4279622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Dec 12, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1823
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hot raw gas stream, as produced by the partial oxidation of a solid carbonaceous fuel such as coal, is partially cooled and cleaned to remove entrained solid matter and slag. A novel gas-gas quench cooling and solids separation apparatus is employed. The apparatus comprises a closed cylindrical insulated vertical pressure vessel containing a lower quench chamber in communication with an upper solids separation chamber. The hot raw gas stream is cooled in the lower chamber to a temperature below the initial deformation temperature of the entrained slag by impingement and direct heat exchange with an oppositely directed coaxial stream of cooled, cleaned, and compressed recycle quench gas. The stream of cooled gas leaving the turbulent lower chamber passes up through a choke-ring into the comparatively calmer upper chamber counter-currently with solid slag droplets which separate out by gravity. Residual solid particles are removed from the gas stream by at least one cyclone separator located in the upper chamber. A portion of the cooled and cleaned gas stream leaving the vessel, with further cooling and with or without further cleaning downstream is recycled back to the vessel for …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.