Low-rank coal oil agglomeration product and process
Abstract
A selectively-sized, raw, low-rank coal is processed to produce a low ash and relative water-free agglomerate with an enhanced heating value and a hardness sufficient to produce a non-decrepitating, shippable fuel. The low-rank coal is treated, under high shear conditions, in the first stage to cause ash reduction and subsequent surface modification which is necessary to facilitate agglomerate formation. In the second stage the treated low-rank coal is contacted with bridging and binding oils under low shear conditions to produce agglomerates of selected size. The bridging and binding oils may be coal or petroleum derived. The process incorporates a thermal deoiling step whereby the bridging oil may be completely or partially recovered from the agglomerate; whereas, partial recovery of the bridging oil functions to leave as an agglomerate binder, the heavy constituents of the bridging oil. The recovered oil is suitable for recycling to the agglomeration step or can serve as a value-added product.
- Inventors:
-
- Grand Forks, ND
- Plymouth, MN
- Issue Date:
- Research Org.:
- Univ. of North Dakota, Grand Forks, ND (United States)
- OSTI Identifier:
- 868530
- Patent Number(s):
- 5162050
- Assignee:
- University of North Dakota School of Engineering & Mines Foundation (Grand Forks, ND)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
- DOE Contract Number:
- FC21-86MC10637
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- low-rank; coal; oil; agglomeration; product; process; selectively-sized; raw; processed; produce; ash; relative; water-free; agglomerate; enhanced; heating; value; hardness; sufficient; non-decrepitating; shippable; fuel; treated; shear; conditions; stage; reduction; subsequent; surface; modification; facilitate; formation; contacted; bridging; binding; oils; agglomerates; selected; size; petroleum; derived; incorporates; thermal; deoiling; step; whereby; completely; partially; recovered; partial; recovery; functions; leave; binder; heavy; constituents; suitable; recycling; serve; value-added; heating value; coal oil; surface modification; selected size; low-rank coal; rank coal; ash reduction; oil agglomeration; bridging oil; enhanced heat; value-added product; process incorporates; /44/
Citation Formats
Knudson, Curtis L, Timpe, Ronald C, Potas, Todd A, DeWall, Raymond A, and Musich, Mark A. Low-rank coal oil agglomeration product and process. United States: N. p., 1992.
Web.
Knudson, Curtis L, Timpe, Ronald C, Potas, Todd A, DeWall, Raymond A, & Musich, Mark A. Low-rank coal oil agglomeration product and process. United States.
Knudson, Curtis L, Timpe, Ronald C, Potas, Todd A, DeWall, Raymond A, and Musich, Mark A. Wed .
"Low-rank coal oil agglomeration product and process". United States. https://www.osti.gov/servlets/purl/868530.
@article{osti_868530,
title = {Low-rank coal oil agglomeration product and process},
author = {Knudson, Curtis L and Timpe, Ronald C and Potas, Todd A and DeWall, Raymond A and Musich, Mark A},
abstractNote = {A selectively-sized, raw, low-rank coal is processed to produce a low ash and relative water-free agglomerate with an enhanced heating value and a hardness sufficient to produce a non-decrepitating, shippable fuel. The low-rank coal is treated, under high shear conditions, in the first stage to cause ash reduction and subsequent surface modification which is necessary to facilitate agglomerate formation. In the second stage the treated low-rank coal is contacted with bridging and binding oils under low shear conditions to produce agglomerates of selected size. The bridging and binding oils may be coal or petroleum derived. The process incorporates a thermal deoiling step whereby the bridging oil may be completely or partially recovered from the agglomerate; whereas, partial recovery of the bridging oil functions to leave as an agglomerate binder, the heavy constituents of the bridging oil. The recovered oil is suitable for recycling to the agglomeration step or can serve as a value-added product.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}
Works referenced in this record:
Selective oil agglomeration of lignite using vacuum bottoms only as an integral part of coprocessing
journal, March 1989
- Ikura, Michio; Kelly, James F.; Capes, C. Edward
- Energy & Fuels, Vol. 3, Issue 2
Kinetics of heavy oil/coal coprocessing
journal, March 1989
- Szladow, A. J.; Chan, R. K.; Fouda, S.
- Energy & Fuels, Vol. 3, Issue 2