Process for quenching product gas of slagging coal gasifier
US4054424A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1975 |
| Grant date | Oct 18, 1977 |
| Priority date | — |
| Expiry date | Jun 5, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/76
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for quenching of the partial combustion product gas of a slagging coal gasifier containing suspended molten slag particles wherein the hot product gas of the gasifier is passed through a tubular quench zone into which a shielding gas is introduced circumferentially to form an annular layer or protective gas shield between the product gas and the walls of the quench zone and a cooling gas is injected radially to effect direct cooling of the product gas to a temperature at which the molten slag particles solidify and lose their stickiness, said protective gas shield being maintained for a sufficient distance along the axis of the quench zone to prevent contact between the quench zone walls and the hot product gas during said cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.