Cleaning and dewatering fine coal

Yoon, Roe-Hoan; Eraydin, Mert Kerem

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A01 - agriculture
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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 Kerem

Issue Date:: 2020-02-18

Research Org.:: Virginia Tech Univ., Blacksburg, VA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1632556

Patent Number(s):: 10562038

Application Number:: 15/786,079

Assignee:: Virginia Tech Intellectual Properties, Inc. (Blacksburg, VA)

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: 10/17/2017

Country of Publication:: United States

Language:: English

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

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                    Yoon, Roe-Hoan, and Eraydin, Mert Kerem. Cleaning and dewatering fine coal.  United States: N. p., 2020. 
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                    Yoon, Roe-Hoan, & Eraydin, Mert Kerem. Cleaning and dewatering fine coal.  United States.

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                    Yoon, Roe-Hoan, and Eraydin, Mert Kerem. Tue .  
        "Cleaning and dewatering fine coal".  United States.  https://www.osti.gov/servlets/purl/1632556.

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@article{osti_1632556,

  title        = {Cleaning and dewatering fine coal},

  author       = {Yoon, Roe-Hoan and Eraydin, Mert Kerem},

  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         = {2020},

  month        = {2}

}

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Yoon, Roe-Hoan
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Similar Records

Title: Cleaning and dewatering fine coal

Abstract

Citation Formats

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

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

Methods for processing coal patent, November 1984

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

Treatment of Low Rank Coals patent-application, November 2011

Methods of increasing flotation rate patent-application, August 2003

Particles as surfactants—similarities and differences journal, March 2002

Time-controlled processes for agglomerating coal patent, September 1988

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

Loudspeaker telephone device comprising a novel noise suppressing circuit patent, October 1995

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

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

Coal recovery processes utilizing agglomeration and density differential separations patent, February 1981

Reactor arrangement for use in beneficiating carbonaceous solids; and process patent, October 1994

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

Process for removing mineral matter from coal patent, September 1986

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

Coal beneficiation by gas agglomeration patent, October 2003

Treatment of coal slurries patent, June 1980

Janus Particles at Liquid−Liquid Interfaces journal, June 2006

Methods to enhance the characteristics of hydrothermally prepared slurry fuels patent, April 2000

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

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

Method and apparatus for dewatering patent, August 1993

Treating and cleaning coal methods patent, January 1981

Method for dewatering fine coal patent, October 1995

Methods of enhancing fine particle dewatering patent, February 2005

Coal recovery process patent, February 1981

Method of Separating and De-Watering Fine Particles patent-application, April 2017

Apparatus for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles patent, March 1995

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

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

Methods for processing coal
patent, November 1984

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

Treatment of Low Rank Coals
patent-application, November 2011

Methods of increasing flotation rate
patent-application, August 2003

Particles as surfactants—similarities and differences
journal, March 2002

Time-controlled processes for agglomerating coal
patent, September 1988

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

Loudspeaker telephone device comprising a novel noise suppressing circuit
patent, October 1995

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

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

Coal recovery processes utilizing agglomeration and density differential separations
patent, February 1981

Reactor arrangement for use in beneficiating carbonaceous solids; and process
patent, October 1994

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

Process for removing mineral matter from coal
patent, September 1986

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

Coal beneficiation by gas agglomeration
patent, October 2003

Treatment of coal slurries
patent, June 1980

Janus Particles at Liquid−Liquid Interfaces
journal, June 2006

Methods to enhance the characteristics of hydrothermally prepared slurry fuels
patent, April 2000

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

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

Method and apparatus for dewatering
patent, August 1993

Treating and cleaning coal methods
patent, January 1981

Method for dewatering fine coal
patent, October 1995

Methods of enhancing fine particle dewatering
patent, February 2005

Coal recovery process
patent, February 1981

Method of Separating and De-Watering Fine Particles
patent-application, April 2017

Apparatus for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
patent, March 1995