Production of low-cost hydrogen. [Twelfth quarterly technical progress report, July 1, 1992--September 27, 1992]
This twelfth quarterly technical progress report presents the results of work accomplished during the period July 1, 1992 through September 27, 1992 under Contract No. DE-AC21-88MC26367 entitled ``Production of Low-Cost Hydrogen``. The overall objective of this program is to verify the ability of the MTCI indirectly heated fluid-bed gasifier to produce a hydrogen-rich product gas from liquefaction by-product streams and from char produced in mild gasification processes. The two-tube gasification unit was modified to reduce heat losses through the reactor vessel. An 18-inch shell was refractory-lined to replace the 8-inch shell previously used. Two tests using a mild gasification char feedstock were conducted successfully. The reactor remained stable over the entire test period and the long-term tests provided similar product gas yields to the shorter term tests run earlier in the program. The SRC residue tests were deferred to the next quarter to provide time to resolve the feeding problems. The preliminary tests for bituminous coal devolatilization utilizing a simple preoxidation step utilizing flue gas for preheating was determined to be the most reasonable. The tests confirmed that there is a sufficient amount of sensible heat in the combustor flue gas to pretreat the caking coal so that the Free Swelling Index could be substantially reduced and thereby prevent agglomeration in the gasifier bed.
- Research Organization:
- Manufacturing and Technology Conversion International, Inc., Columbia, MD (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-89MC26367
- OSTI ID:
- 10187714
- Report Number(s):
- DOE/MC/26367-3461; ON: DE94001313; IN: MTCI--10039-12; BR: AA8590000
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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[Production of low-cost hydrogen]. Technical progress report, October 1992--December 1992
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