Status of the PEATGAS Process

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6461598

Punwani, D. V.

The peat gasification results obtained with Minnesota reed sedge peat in the laboratory-scale equipment have been reported previously. The PEATGAS Process concept for converting peat to SNG has also been presented previously. The PEATGAS reactor concept incorporates single-stage, short-residence-time hydrogasification in dilute-phase cocurrent contacting, followed by a fluidized-bed char gasification with steam and oxygen. After completing laboratory-scale hydrogasification tests, PDU-scale tests were initiated in August 1977 with Minnesota peat. The tests with this peat are now essentially complete and work has been initiated with North Carolina peat. The primary objective of conducting PDU-scale tests was to determine the effects of initial scale-up from the laboratory-scale equipment. Therefore, the gas-solids contacting in both the laboratory- and PDU-scale reactors was cocurrent and in dilute phase. The hydrogasification PDU represents a scale-up of about 250 times the laboratory-scale hydrogasifier. The tests in the laboratory-scale equipment were conducted with hydrogen and/or helium, whereas the tests in the PDU were conducted with hydrogen, steam--hydrogen, and synthesis gas. The PDU test results are in very good agreement with the results obtained in the laboratory-scale equipment. A mathematical model describing the kinetics has been developed for the PEATGAS Process. A complete process design has been prepared for a preliminary base case for producing 250 x 10/sup 9/ Btu/day of SNG from the Minnesota peat (containing 50 percent moisture content). The plant thermal efficiency of this process is estimated to be 67 percent. Process economics for the completed base-case process design as well as several modified designs will be evaluated.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• OSTI ID: 6461598
• Report Number(s): CONF-781045-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
09 BIOMASS FUELS
090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
BENCH-SCALE EXPERIMENTS
CHARS
COAL DEPOSITS
COAL GASIFICATION
COAL GASIFICATION PLANTS
COAL RESERVES
CRYOGENIC FLUIDS
DESIGN
ELEMENTS
ENERGY SOURCES
EUROPE
FLUIDS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GASIFICATION
GEOLOGIC DEPOSITS
HYDROGEN
INDUSTRIAL PLANTS
MATHEMATICAL MODELS
NONMETALS
NORTH AMERICA
PEAT
PEATGAS PROCESS
PROCESS DEVELOPMENT UNITS
PYROLYSIS PRODUCTS
RESERVES
RESOURCES
SNG PROCESSES
THERMOCHEMICAL PROCESSES
USA
USSR