Wet carbonization of lump-size low-rank coals by a Novel Non-Slurry Approach. Progress report, May-July 1985

Technical Report · Tue Oct 01 04:00:00 EDT 1985

OSTI ID:5704610

Lau, F S; Roberts, M J; Jerger, D E; Mensinger, M C; Rue, D M

Work continued this quarter on the design and procurement of equipment to construct the wet-carbonization process research unit(PRU). The PRU is being designed to process about 100 lb/h of as-received coal. Nine batch wet-carbonization tests were conducted this quarter. Tests have now been conducted with all four coals specified in the approved test plan. The four coals are lignites from the Indianhead and Center mines, North Dakota, subbituminous coal from the Rosebud mine, Montana, and lignite from the South Hallsville mine near Martin Lake, Texas. The operating conditions for the tests were temperatures, pressures, and residence times in the range of 400/sup 0/ to 650/sup 0/F, 250 to 3300 psia, and 0 to 60 minutes, respectively. Results to date show that overall component conversions for the two North Dakota lignites are similar for the tests conducted at comparable conditions. The Texas lignite is less reactive and the Montana Rosebud subbituminous coal to significantly less reactive than the North Dakota lignites. Handling characterization tests were conducted with raw and wet-carbonized coals. These tests include drop-shatter tests, bulk and particle density measurements, and particle shrinkage determinations. Particle-size reduction due to drop-shatter testing of wet-carbonized coal was greater than that of the corresponding feed coal and increased with wet-carbonization severity. However, once air-dried, the raw coal decrepitated (crumbled) much more readily than the air-dried wet-carbonized coal. Bulk and particle densities of the wet-carbonized coal products decreased with increasing temperature and residence time. Anaerobic biogasification potential assays were continued this quarter to determine the biodegradability of liquid product samples from the batch wet-carbonization tests. 16 figs., 8 tabs.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: AC21-84MC21225
• OSTI ID: 5704610
• Report Number(s): DOE/MC/21225-16; ON: DE86003764
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ANAEROBIC DIGESTION
BIOCONVERSION
BIOLOGICAL ADAPTATION
BROWN COAL
BULK DENSITY
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COMBUSTION PROPERTIES
CONSTRUCTION
DATA
DECOMPOSITION
DENSITY
DIGESTION
ENERGY SOURCES
EXPERIMENTAL DATA
FEDERAL REGION VI
FEDERAL REGION VIII
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
INFORMATION
LIGNITE
LIQUID WASTES
MANAGEMENT
MATERIALS
MEDIUM PRESSURE
MICROORGANISMS
MOISTURE
MONTANA
NORTH AMERICA
NORTH DAKOTA
NUMERICAL DATA
OXYGEN COMPOUNDS
PARTICLE SIZE
PHYSICAL PROPERTIES
PROCESS DEVELOPMENT UNITS
PROCESSING
PROCUREMENT
RESEARCH PROGRAMS
SHRINKAGE
SIZE
SUBBITUMINOUS COAL
TEMPERATURE EFFECTS
TEXAS
TIME DEPENDENCE
USA
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER