Carbon-catalyzed gasification of organic feedstocks in supercritical water

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie950672b· OSTI ID:367880

Xu, X; Matsumura, Y; Stenberg, J; Antal, Jr, M J ^[1]

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1. Univ. of Hawaii, Honolulu, HI (United States). Hawaii Natural Energy Inst.

Spruce wood charcoal, macadamia shell charcoal, coal activated carbon, and coconut shell activated carbon catalyze the gasification of organic compounds in supercritical water. Feedstocks studied in this paper include glycerol, glucose, cellobiose, whole biomass feedstocks (depithed bagasse liquid extract and sewage sludge), and representative Department of Defense (DoD) wastes (methanol, methyl ethyl ketone, ethylene glycol, acetic acid, and phenol). The effects of temperature, pressure, reactant concentration, weight hourly space velocity, and the type of catalyst on the gasification of glucose are reported. Complete conversion of glucose (22% by weight in water) to a hydrogen-rich synthesis gas was realized at a weight hourly space velocity (WHSV) of 22.2 h{sup {minus}1} in supercritical water at 600 C, 34.5 MPa. Complete conversions of the whole biomass feeds were also achieved at the same temperature and pressure. The destruction efficiencies for the representative DoD wastes were also high. Deactivation of the carbon catalyst was observed after 4 h of operation without swirl in the entrance region of the reactor, but the carbon gasification efficiency remained near 100% for more than 6 h when a swirl generator was employed in the entrance of the reactor.

• OSTI ID: 367880
• Journal Information: Industrial and Engineering Chemistry Research, Vol. 35, Issue 8; Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
01 COAL, LIGNITE, AND PEAT
10 SYNTHETIC FUELS
ACTIVATED CARBON
CATALYTIC EFFECTS
CHARCOAL
GLUCOSE
GASIFICATION
CHEMICAL WASTES
ORGANIC COMPOUNDS
SUPERCRITICAL STATE
WATER VAPOR
PARAMETRIC ANALYSIS
WOOD
AGRICULTURAL WASTES
BY-PRODUCTS
CATALYSTS
POISONING
SYNTHESIS GAS