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

Patent · Sun Jan 01 00:00:00 EST 1989

OSTI ID:866969

Grindley, Thomas ^[1]

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1. Morgantown, WV

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 (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• 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

Related Subjects

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