Cleaning and dewatering fine coal

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

Title: Cleaning and dewatering fine coal

Patent · Tue Oct 17 00:00:00 EDT 2017

OSTI ID:1400259

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

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.

View Patent

Cite

Export

Save

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

Sponsoring Organization:: USDOE

DOE Contract Number:: FC26-05NT42457

Assignee:: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

Patent Number(s):: 9,789,492

Application Number:: 13/576,067

OSTI ID:: 1400259

Resource Relation:: Patent File Date: 2011 Jan 31

Country of Publication:: United States

Language:: English

References (24)

Removal of fine particles from a gas stream by solid particle addition in venturi contactor Calvert, Seymour https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4169714 US Patent Document 4,169,714	patent	October 1979
Treatment of coal slurries Nicol, Stuart K.; Swanson, Andrew https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4209301 US Patent Document 4,209,301	patent	June 1980
Treating and cleaning coal methods Smith, Clay D.; Keller, Jr., Douglas V. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4244699 US Patent Document 4,244,699	patent	January 1981
Coal recovery process Keller, Jr., Douglas V. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4248698 US Patent Document 4,248,698	patent	February 1981
Methods for processing coal Keller, Jr., Douglas V. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4484928 US Patent Document 4,484,928	patent	November 1984
Process for removing mineral matter from coal Chiang, Shiao-Hung; Klinzing, George E. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4613429 US Patent Document 4,613,429	patent	September 1986
Time-controlled processes for agglomerating coal Keller, Jr., Douglas V.; Burry, William M. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4770766 US Patent Document 4,770,766	patent	September 1988
Preagglomeration of fine coal before thermal dryer in a preparation plant Wasson, George E. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4830637 US Patent Document 4,830,637	patent	May 1989
Inclined fluidized bed system for drying fine coal Cha, Chang Y.; Merriam, Norman W.; Boysen, John E. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5087269 US Patent Document 5,087,269	patent	February 1992
Method for separating fine particles by selective hydrophobic coagulation Yoon, Roe-Hoan; Luttrell, Gerald H. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5161694 US Patent Document 5,161,694	patent	November 1992
Method and apparatus for dewatering Greenwald, Sr., Edward H. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5236596 US Patent Document 5,236,596	patent	August 1993
Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution Wen, Wu-Wey; Gray, McMahan L.; Champagne, Kenneth J. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5379902 US Patent Document 5,379,902	patent	January 1995
Method for dewatering fine coal Yoon, Roe-Hoan; Luttrell, Gerald H. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5458786 US Patent Document 5,458,786	patent	October 1995
Methods of using natural products as dewatering aids for fine particles Yoon, Roe-Hoan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6526675 US Patent Document 6,526,675	patent	March 2003
Coal beneficiation by gas agglomeration Wheelock, Thomas D.; Meiyu, Shen https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6632258 US Patent Document 6,632,258	patent	October 2003
Methods of enhancing fine particle dewatering Yoon, Roe-Hoan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6855260 US Patent Document 6,855,260	patent	February 2005
Methods of increasing flotation rate Yoon, Roe-Hoan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20030146134 US Patent Document 10/218979; 20030146134	patent-application	August 2003
Methods of Enhancing Fine Particle Dewatering Yoon, Roe Hoan https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20080053914 US Patent Document 11/833402; 20080053914	patent-application	March 2008
A survey of oil agglomeration in wet fine coal processing Capes, C. E.; Darcovich, K. Powder Technology, Vol. 40, Issue 1-3, p. 43-52 https://doi.org/10.1016/0032-5910(84)85054-8	journal	October 1984
An investigation of a separation process involving liquid—water—coal systems Keller, D. V.; Burry, W. Colloids and Surfaces, Vol. 22, Issue 1, p. 37-50 https://doi.org/10.1016/0166-6622(87)80004-5	journal	January 1987
The Demineralization of Coal Using Selective Agglomeration by the T-Process Keller, Jr., D. V.; Burry, W. M. Coal Preparation, Vol. 8, Issue 1-2, p. 1-17 https://doi.org/10.1080/07349349008905169	journal	January 1990
The Licado Coal Cleaning Process: A Strategy For Reducing SO₂ Emissions From Fossil-Fueled Power Plants Cooper, M.; Muenchow, H. O.; Chiang, S. H. https://doi.org/10.1109/IECEC.1990.716478	conference	January 1990
Particles as surfactants—similarities and differences Binks, Bernard P. Current Opinion in Colloid & Interface Science, Vol. 7, Issue 1-2, p. 21-41 https://doi.org/10.1016/S1359-0294(02)00008-0	journal	March 2002
Particles Adsorbed at the Oil−Water Interface: A Theoretical Comparison between Spheres of Uniform Wettability and “Janus” Particles Binks, B. P.; Fletcher, P. D. I. Langmuir, Vol. 17, Issue 16, p. 4708-4710 https://doi.org/10.1021/la0103315	journal	August 2001

Similar Records

Cleaning and dewatering fine coal

Patent · Tue Feb 18 00:00:00 EST 2020 · OSTI ID:1400259

Yoon, Roe-Hoan; Eraydin, Mert Kerem

Development of an Ultra-fine Coal Dewatering Technology and an Integrated Flotation-Dewatering System for Coal Preparation Plants

Technical Report · Fri Dec 22 00:00:00 EST 2006 · OSTI ID:1400259

Zhang, Wu; Yang, David; Amarnath, Amar; +3 more

Dewatering studies of fine clean coal. Technical report, March 1, 1992--May 31, 1992

Technical Report · Thu Oct 01 00:00:00 EDT 1992 · OSTI ID:1400259

Parekh, B K

Related Subjects

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

Title: Cleaning and dewatering fine coal

Citation Formats

References (24)

Similar Records

Related Subjects