Development of an advanced, continuous mild gasification process for the production of co-products

Technical Report · Sun Apr 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/6426557· OSTI ID:6426557

Knight, R A; Gissy, J; Kline, S; Onischak, M; Babu, S P ^[1]; Duthie, R G ^[2]

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1. Institute of Gas Technology, Chicago, IL (USA)
2. Bechtel National, Inc., San Francisco, CA (USA)

A project team consisting of the Institute of Gas Technology, Peabody Holding Company, Inc., and Bechtel National, Inc., is developing a mild gasification process that uses a fluidized/entrained-bed reactor. This reactor is designed to process caking bituminous coals over a wide range of particle sizes without oxidative pretreatment, and also without the use of oxygen or air as reactants. The co-product streams, consisting of char, fuel gas, water, and condensables, would be separated by conventional means such as cyclone, staged condensers, and recycle-oil scrubbers. An isothermal process research unit (PRU) has been built at IGT, consisting of an 8-inch-I.D., 8-foot-long fluidized-bed section and a 4-inch-I.D., 13-foot-long entrained flow section, externally heated by electrical heaters. This quarter, eleven mild gasification tests were conducted in the PRU. Illinois No. 6 coal was used in nine of the tests and a West Virginia metallurgical grade of coal was used in the last two tests. The tests conducted in the PRU this quarter were operated with feed rates about three times higher than those used in the last quarter. Results show the effect of process temperature on the shields of char, oils/tars, and gases. Various compositional effects on the oils/tars were also discovered. Char upgrading studies were completed for the char co-product options of smokeless fuel and adsorbent char. A total condensate collection system was designed for the PRU system. 18 figs., 22 tabs.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC21-87MC24266
• OSTI ID: 6426557
• Report Number(s): DOE/MC/24266-2925; ON: DE91005539
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ADSORPTION
AROMATICS
BENCH-SCALE EXPERIMENTS
BY-PRODUCTS
CHARS
CHEMICAL REACTORS
COAL GASIFICATION
COST
DOCUMENT TYPES
ECONOMICS
FLUIDS
GASES
GASIFICATION
HYDROCARBONS
MATERIAL BALANCE
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
POLYCYCLIC AROMATIC HYDROCARBONS
PROGRESS REPORT
PYROLYSIS PRODUCTS
SORPTION
TAR
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
YIELDS