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Method for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier

Patent ·
OSTI ID:866969
 [1]
  1. Morgantown, WV
+ Show Author Affiliations
A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier. A fluid-bed of iron oxide is located inside the gasifier above the gasification bed in a fluid-bed coal gasifier in which in-bed desulfurization by lime/limestone takes place. The product gases leave the gasification bed typically at 1600.degree. to 1800.degree. F. and are partially quenched with water to 1000.degree. to 1200.degree. F. before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime/limestone.
Research Organization:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 4832704
OSTI ID:
866969
Country of Publication:
United States
Language:
English

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Related Subjects

/48/
1000
1200
1600
1800
additional
apparatus
bed
bed coal
coal
coal gas
coal gasifier
degree
desulfurization
enhancing
entering
fluid-bed
fluid-bed coal
gas
gas produced
gases
gasification
gasifier
hot
hot coal
hot gas
in-bed
inside
iron
iron oxide
leave
lime
limestone
located
located inside
method
oxide
partially
process
produced
product
product gas
product gases
provided
provides
provides additional
providing
quenched
takes
typically
water