Use of ultrasound for enhanced direct coal liquefaction

Technical Report · Mon Jan 01 00:00:00 EST 1990

OSTI ID:5719933

Bendale, P G; Joseph, S ^[1]; Tierney, J W; Wender, I ^[2]

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1. Viking Systems International, Pittsburgh, PA (United States)
2. Pittsburgh Univ., PA (United States). Dept. of Chemical and Petroleum Engineering

The objective of this project is to investigate whether high-intensity ultrasound is capable of inducing coal liquefaction under mild conditions of temperature and pressure, in the presence of a solvent, and in the presence or absence of a liquefaction catalyst. The role of high-intensity ultrasound in effective dispersion of solids and/or activation of catalyst was also investigated. Model compounds which represent coal such as bibenzyl, benzyl ether and anisole in the presence of tetralin or 9,10-dihydroanthracene as a hydrogen donor solvent, were subjected to high-intensity ultrasound to determine if any chemical bonds are broken under the action of ultrasound. Two step liquefaction experiments were carried out to study the effect of ultrasound on both catalyzed and non-catalyzed coal liquefaction (utilizing a bituminous and subbituminous coal). Soluble catalysts such as molybdenum naphthenate or molybdenum carbonyl were used as catalyst precursors along with stoichiometric amounts of elemental sulfur. The results of these experiments with model compounds and with coal are discussed in detail. 25 refs., 6 figs., 16 tabs.

• Research Organization: Viking Systems International, Pittsburgh, PA (United States); Pittsburgh Univ., PA (United States). Dept. of Chemical and Petroleum Engineering
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-88PC88816
• OSTI ID: 5719933
• Report Number(s): DOE/PC/88816-T9; ON: DE91014807
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ANISOLE
ULTRASONIC WAVES
BITUMINOUS COAL
ETHERS
MOLYBDENUM COMPOUNDS
CATALYTIC EFFECTS
SUBBITUMINOUS COAL
CHEMICAL BONDS
COAL LIQUEFACTION
PROGRESS REPORT
TETRALIN
AROMATICS
BLACK COAL
CARBONACEOUS MATERIALS
COAL
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROAROMATICS
HYDROCARBONS
LIQUEFACTION
MATERIALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SOUND WAVES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction