Waste oils utilized as coal liquefaction solvents on different ranks of coal

Journal Article · Sun Dec 31 04:00:00 EST 1995 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry

OSTI ID:420615

Orr, E C; Shi, Yanlong; Liang, Jing; Ding, Weibing; Anderson, L L; Eyring, E M ^[1]

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1. Univ. of Utah, Salt Lake City, UT (United States)

Solvent plays an important role in direct coal liquefaction. The solvent acts as a medium to transport hydrogen, as a heat transfer medium, as an additional reactant along with the coal, as a coal dissolution medium, and as the medium to transport coal liquefaction products away from the coal matrix. Recent investigations of coprocessing coal with solid waste materials (plastics, rubbers, cellulose) to raise the hydrogen content of the coal products with a concomitant decreased need for the addition of hydrogen gas have involved reacting solid waste plastics and solid waste rubbers directly with coal with little preparation other than grinding or shredding the waste material. (An indirect benefit to coprocessing waste with coal is that less waste must be disposed of in landfills or by incineration.) Dry mixing of coal and waste materials may be the most cost effective method for coprocessing waste with coal because there is less preparation of the waste material. However, the metals, anti oxidants, carbon black, and plasticers present in the waste materials make some preparation of the reactants necessary. A possible pretreatment of the waste materials would be a vacuum pyrolysis of the waste materials that would produce cleaner oils. To examine this issue, we have recently carried out coal liquefaction experiments in which coals of different ranks were reacted with oils obtained by the vacuum pyrolysis of waste materials, specifically plastics and rubber tires. We have also used waste automotive oils to determine whether the automotive oil is effective, and whether trace heavy metals found in the waste automotive oil can be scavenged by the coal.

• OSTI ID: 420615
• Report Number(s): CONF-950801--; CNN: Contract UKRF-4-21033-86-24
• Journal Information: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry Journal Issue: 3 Vol. 40; ISSN ACFPAI; ISSN 0569-3772
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CARBON BLACK
CELLULOSE
COAL LIQUEFACTION
COPROCESSING
HEAT TRANSFER
PLASTICS
RUBBERS
SOLVENT PROPERTIES
SOLVENTS
TIRES
WASTE OILS