Agglomerating combustor-gasifier method and apparatus for coal gasification. [11 claims]
Patent
·
OSTI ID:7314567
A method and apparatus are described for gasifying coal wherein the gasification takes place in a spout fluid bed at a pressure of about 10 to 30 atmospheres and a temperature of about 1800 to 2200/sup 0/F and wherein the configuration of the apparatus and the manner of introduction of gases for combustion and fluidization is such that agglomerated ash can be withdrawn from the bottom of the apparatus and gas containing very low dust loading is produced. The gasification reaction is self-sustaining through the burning of a stoichiometric amount of coal with air in the lower part of the apparatus to form the spout within the fluid bed. The method and apparatus are particularly suitable for gasifying coarse coal particles. 11 claims, 4 figures.
- Assignee:
- Energy Research and Development Administration
- Patent Number(s):
- US 3981690
- OSTI ID:
- 7314567
- Country of Publication:
- United States
- Language:
- English
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