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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:
;
Issue Date:
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):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
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
DOE Contract Number:  
FC26-05NT42457
Resource Type:
Patent
Resource Relation:
Patent File Date: 10/17/2017
Country of Publication:
United States
Language:
English

Citation Formats

Yoon, Roe-Hoan, and Eraydin, Mert Kerem. Cleaning and dewatering fine coal. United States: N. p., 2020. Web.
Yoon, Roe-Hoan, & Eraydin, Mert Kerem. Cleaning and dewatering fine coal. United States.
Yoon, Roe-Hoan, and Eraydin, Mert Kerem. Tue . "Cleaning and dewatering fine coal". United States. https://www.osti.gov/servlets/purl/1632556.
@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}
}