Fluidized bed gasifier with integrated pretreating facilities. [for caking coal]

Patent · Thu Mar 20 00:00:00 EST 1980

OSTI ID:7021443

Rice, L F

An integral gasifier including a pretreater section and a gasifier section separated by a distribution grid is defined by a single vessel. The pretreater section pretreats coal or other carbon-containing material to be gasified to prevent caking and agglomeration of the coal in the gasifier. The level of the coal bed of the pretreater section and thus the holding or residence time in said bed is selectively regulated by the amount of pretreated coal which is lifted up a lift pipe into the gasifier section. Thus, the holding time in the pretreater section can be varied according to the amount of pretreat necessary for the particular coal to be gasified.

• DOE Contract Number: EX-76-C-01-1775
• Assignee: Dept. of Energy
• OSTI ID: 7021443
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION PLANTS
AGGLOMERATION
CAKING
CONTROL SYSTEMS
FLUIDIZED BED
LEVELS
PROCESSING
INDUSTRIAL PLANTS
010404* - Coal
Lignite
& Peat- Gasification