Cleaning and dewatering fine coal

Yoon, Roe-Hoan; Eraydin, Mert K.; Freeland, Chad

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
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B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
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Title: Cleaning and dewatering fine coal

Abstract

Fine coal is cleaned of its mineral matter impurities and dewatered by mixing the aqueous slurry containing both with a hydrophobic liquid, subjecting the mixture to a phase separation. The resulting hydrophobic liquid phase contains coal particles free of surface moisture and droplets of water stabilized by coal particles, while the aqueous phase contains the mineral matter. By separating the entrained water droplets from the coal particles mechanically, a clean coal product of substantially reduced mineral matter and moisture contents is obtained. The spent hydrophobic liquid is separated from the clean coal product and recycled. The process can also be used to separate one type of hydrophilic particles from another by selectively hydrophobizing one.

Inventors:: Yoon, Roe-Hoan; Eraydin, Mert K.; Freeland, Chad

Issue Date:: Tue Oct 17 00:00:00 EDT 2017

Research Org.:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1400259

Patent Number(s):: 9789492

Application Number:: 13/576,067

Assignee:: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR

Show more

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
B03B1/04 - by additives
B03B9/005 - {specially adapted for coal}

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
C10L5/366 - {Powders}
C10L9/10 - by using additives

Show less

DOE Contract Number:: FC26-05NT42457

Resource Type:: Patent

Resource Relation:: Patent File Date: 2011 Jan 31

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Yoon, Roe-Hoan, Eraydin, Mert K., and Freeland, Chad. Cleaning and dewatering fine coal.  United States: N. p., 2017. 
        Web.

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                    Yoon, Roe-Hoan, Eraydin, Mert K., & Freeland, Chad. Cleaning and dewatering fine coal.  United States.

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                    Yoon, Roe-Hoan, Eraydin, Mert K., and Freeland, Chad. Tue .  
        "Cleaning and dewatering fine coal".  United States.  https://www.osti.gov/servlets/purl/1400259.

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@article{osti_1400259,

  title        = {Cleaning and dewatering fine coal},

  author       = {Yoon, Roe-Hoan and Eraydin, Mert K. and Freeland, Chad},

  abstractNote = {Fine coal is cleaned of its mineral matter impurities and dewatered by mixing the aqueous slurry containing both with a hydrophobic liquid, subjecting the mixture to a phase separation. The resulting hydrophobic liquid phase contains coal particles free of surface moisture and droplets of water stabilized by coal particles, while the aqueous phase contains the mineral matter. By separating the entrained water droplets from the coal particles mechanically, a clean coal product of substantially reduced mineral matter and moisture contents is obtained. The spent hydrophobic liquid is separated from the clean coal product and recycled. The process can also be used to separate one type of hydrophilic particles from another by selectively hydrophobizing one.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Oct 17 00:00:00 EDT 2017},

  month        = {Tue Oct 17 00:00:00 EDT 2017}

}

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Works referenced in this record:

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patent, October 1979

Calvert, Seymour
US Patent Document 4,169,714
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Treatment of coal slurries
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Coal recovery process
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Methods for processing coal
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Process for removing mineral matter from coal
patent, September 1986

Chiang, Shiao-Hung; Klinzing, George E.
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Time-controlled processes for agglomerating coal
patent, September 1988

Keller, Jr., Douglas V.; Burry, William M.
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Preagglomeration of fine coal before thermal dryer in a preparation plant
patent, May 1989

Wasson, George E.
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Inclined fluidized bed system for drying fine coal
patent, February 1992

Cha, Chang Y.; Merriam, Norman W.; Boysen, John E.
US Patent Document 5,087,269
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patent, November 1992

Yoon, Roe-Hoan; Luttrell, Gerald H.
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patent, August 1993

Greenwald, Sr., Edward H.
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Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution
patent, January 1995

Wen, Wu-Wey; Gray, McMahan L.; Champagne, Kenneth J.
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Method for dewatering fine coal
patent, October 1995

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Methods of using natural products as dewatering aids for fine particles
patent, March 2003

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patent, February 2005

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Methods of increasing flotation rate
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Similar Records

Title: Cleaning and dewatering fine coal

Abstract

Citation Formats

Removal of fine particles from a gas stream by solid particle addition in venturi contactor patent, October 1979

Treatment of coal slurries patent, June 1980

Treating and cleaning coal methods patent, January 1981

Coal recovery process patent, February 1981

Methods for processing coal patent, November 1984

Process for removing mineral matter from coal patent, September 1986

Time-controlled processes for agglomerating coal patent, September 1988

Preagglomeration of fine coal before thermal dryer in a preparation plant patent, May 1989

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

Method for separating fine particles by selective hydrophobic coagulation patent, November 1992

Method and apparatus for dewatering patent, August 1993

Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution patent, January 1995

Method for dewatering fine coal patent, October 1995

Methods of using natural products as dewatering aids for fine particles patent, March 2003

Coal beneficiation by gas agglomeration patent, October 2003

Methods of enhancing fine particle dewatering patent, February 2005

Methods of increasing flotation rate patent-application, August 2003

Methods of Enhancing Fine Particle Dewatering patent-application, March 2008

A survey of oil agglomeration in wet fine coal processing journal, October 1984

An investigation of a separation process involving liquid—water—coal systems journal, January 1987

The Demineralization of Coal Using Selective Agglomeration by the T-Process journal, January 1990

The Licado Coal Cleaning Process: A Strategy For Reducing SO2 Emissions From Fossil-Fueled Power Plants conference, January 1990

Particles as surfactants—similarities and differences journal, March 2002

Particles Adsorbed at the Oil−Water Interface: A Theoretical Comparison between Spheres of Uniform Wettability and “Janus” Particles journal, August 2001

Removal of fine particles from a gas stream by solid particle addition in venturi contactor
patent, October 1979

Treatment of coal slurries
patent, June 1980

Treating and cleaning coal methods
patent, January 1981

Coal recovery process
patent, February 1981

Methods for processing coal
patent, November 1984

Process for removing mineral matter from coal
patent, September 1986

Time-controlled processes for agglomerating coal
patent, September 1988

Preagglomeration of fine coal before thermal dryer in a preparation plant
patent, May 1989

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

Method for separating fine particles by selective hydrophobic coagulation
patent, November 1992

Method and apparatus for dewatering
patent, August 1993

Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution
patent, January 1995

Method for dewatering fine coal
patent, October 1995

Methods of using natural products as dewatering aids for fine particles
patent, March 2003

Coal beneficiation by gas agglomeration
patent, October 2003

Methods of enhancing fine particle dewatering
patent, February 2005

Methods of increasing flotation rate
patent-application, August 2003

Methods of Enhancing Fine Particle Dewatering
patent-application, March 2008

A survey of oil agglomeration in wet fine coal processing
journal, October 1984

An investigation of a separation process involving liquid—water—coal systems
journal, January 1987

The Demineralization of Coal Using Selective Agglomeration by the T-Process
journal, January 1990

The Licado Coal Cleaning Process: A Strategy For Reducing SO₂ Emissions From Fossil-Fueled Power Plants
conference, January 1990

Particles as surfactants—similarities and differences
journal, March 2002

Particles Adsorbed at the Oil−Water Interface: A Theoretical Comparison between Spheres of Uniform Wettability and “Janus” Particles
journal, August 2001