Method and apparatus for gasifying with a fluidized bed gasifier having integrated pretreating facilities

Patent · 01 January 1981

OSTI ID:864043

Rice, Louis F ^[1]

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1. Arcadia, CA

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.

• Research Organization: Parsons (Ralph M.) Co
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4300914
• OSTI ID: 864043
• Country of Publication: United States
• Language: English

Related Subjects

/48/201/422/
according
agglomeration
amount
apparatus
bed
bed gasifier
caking
carbon-containing
carbon-containing material
coal
coal bed
containing material
defined
distribution
facilities
fluidized
fluidized bed
gasified
gasifier
gasifier including
gasifying
grid
holding
including
integral
integral gas
integrated
level
lift
lifted
material
method
particular
pipe
pretreat
pretreated
pretreater
pretreating
pretreats
prevent
regulated
residence
residence time
section
selectively
separated
single
single vessel
time
varied
vessel