Experimental program for the development of peat gasification. Final report for Project No. 65003, February 10, 1976-January 3, 1983. [Contains list of 15 interim reports and brief summaries of each]

Technical Report · Fri Jul 01 04:00:00 EDT 1983

OSTI ID:5936148

The results of the program have demonstrated that, on the basis of chemistry and kinetics, peat is an excellent feedstock for the production of SNG and other gaseous and liquid fuels. Peat gasifies at a much faster rate than does lignite or other coals, and high carbon conversions can be achieved with peat at relatively low severity conditions. In hydrogasification, the product mix (gases and liquids) can be varied over a much greater range than that of lignite or other coals, to satisfy seasonally changing consumer demands. Over 200 tests were conducted in laboratory- and PDU-scale equipment with different peats to determine the effects of temperature, pressure, feedstock, feed gas composition, residence time, and other operating parameters on the gasification of peat. A mathematical model was developed that closely describes the effects of operating conditions on peat gasification. These results formed the data base for the PEATGAS process development at the pilot-plant scale. Tests with peats from different geographic locations showed the effect of feedstock source on gasification. The effect of peat dewatering methodologies (including harvesting techniques and mechanical and thermal dewatering methods) on gasification was also studied. Wet carbonization tests were conducted. Wet carbonization is a thermochemical beneficiation process that improves the heating value and dewaterability of peat. The laboratory test program was the first systemic study of the effects of wet carbonization on the carbon and oxygen conversions and heating value enhancements of peat to appear in the open literature. The PDU-test program included the design, construction, and operation of an integrated computer-controlled wet carbonization unit.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC01-76ET10283
• OSTI ID: 5936148
• Report Number(s): DOE/ET/10283-T20; FE-2469-94; ON: DE85010818
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CARBONIZATION
CHEMICAL ANALYSIS
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COAL GASIFICATION
DECOMPOSITION
ENERGY SOURCES
EXTRACTION
FLUIDIZED BED
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GASIFICATION
GRAVIMETRIC ANALYSIS
HYDROGENATION
ORGANIC MATTER
PARAMETRIC ANALYSIS
PEAT
PEATGAS PROCESS
PHYSICAL PROPERTIES
PILOT PLANTS
PROCESS DEVELOPMENT UNITS
QUANTITATIVE CHEMICAL ANALYSIS
REMOVAL
SEPARATION PROCESSES
SNG PROCESSES
SOLVENT EXTRACTION
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
WATER REMOVAL