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

Title: Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier

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Abstract

A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier is described. 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 to 1800 F and are partially quenched with water to 1000 to 1200 F before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime /limestone. 1 fig.

Inventors:: Grindley, T.

Issue Date:: 1988-04-05

Research Org.:: USDOE Morgantown Energy Technology Center, WV

OSTI Identifier:: 6444452

Patent Number(s):: -US-A7177310

Application Number:: ON: DE89010096

Assignee:: US Dept. of Energy TIC; EDB-89-060547

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT; COAL GASIFICATION; HOT GAS CLEANUP; IRON OXIDES; SORPTIVE PROPERTIES; LIMESTONE; ABSORPTION; COOLING; DESIGN; DESULFURIZATION; HYDROGEN SULFIDES; POLLUTION CONTROL; WATER; CARBONATE ROCKS; CHALCOGENIDES; CHEMICAL REACTIONS; CONTROL; GASIFICATION; HYDROGEN COMPOUNDS; IRON COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PURIFICATION; ROCKS; SEDIMENTARY ROCKS; SULFIDES; SULFUR COMPOUNDS; SURFACE PROPERTIES; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS; 010404* - Coal, Lignite, & Peat- Gasification; 010800 - Coal, Lignite, & Peat- Waste Management

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                    Grindley, T. Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier.  United States: N. p., 1988. 
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                    Grindley, T. Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier.  United States.

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                    Grindley, T. Tue .  
        "Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier".  United States.

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@article{osti_6444452,

  title        = {Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier},

  author       = {Grindley, T.},

  abstractNote = {A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier is described. 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 to 1800 F and are partially quenched with water to 1000 to 1200 F before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime /limestone. 1 fig.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1988},

  month        = {4}

}

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

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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/sup 0/ to 1800/sup 0/F. and are particularly quenched with water to 1000/sup 0/ to 1200/sup 0/F. before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime/limestone.
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