Controlled spontaneous reactor system

Selle, Stanley J.; Hajicek, Douglas R.; Mann, Michael D.; Grewal, Nanak S.

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
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Title: Controlled spontaneous reactor system

Abstract

A process of improving overall quality of coals or other solid fuels comprising heat treating those coals in a controlled, spontaneous, fluidized bed reactor system. The bed system is of such a geometry that in combination with the control system a higher velocity region exists where the fluidizing gas and fuel are fed than where the treated solids exit. The offgas exiting the top of the reactor has a velocity of the average of the inlet gas velocities. Treated coal is withdrawn intermediate to top and bottom. Residence time is controlled by the amount of the solid fuel feed, the location of the treated solid fuel overflow, and the temperature is maintained by oxygen to flue gas ratio, feedstock size and fluidizing velocity. The unit can be operated in a drying mode or a devolatilization mode, to control volatiles, moisture and fines.

Inventors:: Selle, Stanley J.; Hajicek, Douglas R.; Mann, Michael D.; Grewal, Nanak S.

Issue Date:: 1996-08-20

Research Org.:: Energy and Environmental Research Center Foundation, Grand Forks, ND (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1531418

Patent Number(s):: 5546875

Application Number:: 08/341,742

Assignee:: Energy and Environmental Research Center Foundation (Grand Forks, ND)

Patent Classifications (CPCs):: C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23K - FEEDING FUEL TO COMBUSTION APPARATUS

Show more

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
C10L9/08 - by heat treatments, e.g. calcining

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23K - FEEDING FUEL TO COMBUSTION APPARATUS
F23K1/00 - Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus

F - MECHANICAL ENGINEERING F26 - DRYING F26B - DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
F26B3/08 - so as to loosen them, e.g. to form a fluidised bed {

Show less

DOE Contract Number:: FC21-86MC10637

Resource Type:: Patent

Resource Relation:: Patent File Date: 1994-11-18

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT

Citation Formats


                    Selle, Stanley J., Hajicek, Douglas R., Mann, Michael D., and Grewal, Nanak S. Controlled spontaneous reactor system.  United States: N. p., 1996. 
        Web.

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                    Selle, Stanley J., Hajicek, Douglas R., Mann, Michael D., & Grewal, Nanak S. Controlled spontaneous reactor system.  United States.

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                    Selle, Stanley J., Hajicek, Douglas R., Mann, Michael D., and Grewal, Nanak S. Tue .  
        "Controlled spontaneous reactor system".  United States.  https://www.osti.gov/servlets/purl/1531418.

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@article{osti_1531418,

  title        = {Controlled spontaneous reactor system},

  author       = {Selle, Stanley J. and Hajicek, Douglas R. and Mann, Michael D. and Grewal, Nanak S.},

  abstractNote = {A process of improving overall quality of coals or other solid fuels comprising heat treating those coals in a controlled, spontaneous, fluidized bed reactor system. The bed system is of such a geometry that in combination with the control system a higher velocity region exists where the fluidizing gas and fuel are fed than where the treated solids exit. The offgas exiting the top of the reactor has a velocity of the average of the inlet gas velocities. Treated coal is withdrawn intermediate to top and bottom. Residence time is controlled by the amount of the solid fuel feed, the location of the treated solid fuel overflow, and the temperature is maintained by oxygen to flue gas ratio, feedstock size and fluidizing velocity. The unit can be operated in a drying mode or a devolatilization mode, to control volatiles, moisture and fines.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1996},

  month        = {8}

}

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Similar Records

Title: Controlled spontaneous reactor system

Abstract

Citation Formats

Process and system for drying coal in a fluidized bed by partial combustion patent, April 1982

Apparatus for the combustion of poorly combustible fuels patent, March 1989

Fluidized bed reactor utilizing zonal fluidization and anti-mounding pipes patent, September 1982

Fluidizing Bed Coking Method of Brown Coal patent, June 1972

Method and equipment for treatment of fuel for fluidized bed combustion patent, April 1982

Regenerating Carbon Contaminated Catalysts patent, April 1947

Method for drying low rank coals patent, February 1988

Process and apparatus for emissions reduction from waste incineration patent, June 1991

Apparatus for the calcination of a pulverized mineral material patent, February 1987

Apparatus for incineration of refuse patent, April 1991

Apparatus for reducing the moisture content in combustible material by utilizing the heat from combustion of such material patent, March 1992

Fluidized bed combustion system and method having an integral recycle heat exchanger with a transverse outlet chamber patent, December 1991

Incinerating-fusing system for city refuse disposal patent, January 1992

Inclined fluidized bed system for drying fine coal patent, February 1992

Solids recycle seal system for a fluidized bed reactor patent, September 1993

Combustion method and apparatus patent, September 1997

Fluidized-bed heat-treatment process and apparatus for use in a manufacturing line patent, March 2000

Post torrefaction biomass pelletization patent, June 2018

Drying and separation integrated machine for vibrating fluidized bed patent, May 2018

Apparatus and method of enhancing the quality of high-moisture materials and separating and concentrating organic and/or non-organic material contained therein patent, November 2011

Process for drying coal patent, May 2009

Method of enhancing the quality of high-moisture materials using system heat sources patent, November 2013

Split plenum arrangement for an apparatus for coating tablets patent, February 2004

Primary oxidant feed to oxy-fired circulating fluidized bed (CFB) patent, October 2013

Method of drying biomass patent, February 2015

Control system for particulate material drying apparatus and process patent, August 2011

Integrated fluidized bed ash cooler patent, December 2008

Apparatus and method of separating and concentrating organic and/or non-organic material patent, October 2007

Fluidized bed incinerator patent, June 1999

Process for drying coal patent, June 2012

Apparatus and method of separating and concentrating organic and/or non-organic material patent, June 2009

Post torrefaction biomass pelletization patent, June 2015

Process for in-situ passivation of partially-dried coal patent, April 2010

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Process to improve boiler operation by supplemental firing with thermally beneficiated low rank coal patent, December 2001

Closed loop drying system and method patent, November 2016

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Process and system for drying coal in a fluidized bed by partial combustion
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Apparatus for the combustion of poorly combustible fuels
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Fluidized bed reactor utilizing zonal fluidization and anti-mounding pipes
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Fluidizing Bed Coking Method of Brown Coal
patent, June 1972

Method and equipment for treatment of fuel for fluidized bed combustion
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Regenerating Carbon Contaminated Catalysts
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Method for drying low rank coals
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Process and apparatus for emissions reduction from waste incineration
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Apparatus for the calcination of a pulverized mineral material
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Apparatus for incineration of refuse
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Apparatus for reducing the moisture content in combustible material by utilizing the heat from combustion of such material
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Incinerating-fusing system for city refuse disposal
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