Slurry atomizer for a coal-feeder and dryer used to provide coal at gasifier pressure
US4341530A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1981 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | Jun 23, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S48/07
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to a coal-water slurry atomizer for use a high-pressure dryer employed in a pumping system utilized to feed coal into a pressurized coal gasifier. The slurry atomizer is provided with a venturi, constant area slurry injection conduit, and a plurality of tangentially disposed steam injection ports. Superheated steam is injected into the atomizer through these ports to provide a vortical flow of the steam, which, in turn, shears slurry emerging from the slurry injection conduit. The droplets of slurry are rapidly dispersed in the dryer through the venturi where the water is vaporized from the slurry by the steam prior to deleterious heating of the coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.