Coal gasification pilot plant support studies. Subtask 4-1. Development of coal preparation techniques for gasification processes to reduce energy requirements, optimize size distribution, and conserve water

Technical Report · Wed Oct 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/7182173· OSTI ID:7182173

The preparation and handling of gasifier feed coal can be done with a complete wet-handling and wet-preparation plant for mine-mouth coal gasification plants using water-based slurry transport. This study was concerned with five important areas of this wet-handling system that, prior to this program, have not been completely addressed: (1) Wet-Size Reduction of Coal; (2) Slurry Transport Characteristics of a Coarse Particle Size Stream; (3) Agglomeration Reduction of Caking Coals by Partial Oxidation in a Slurry; (4) Mechanical Dewatering of Coal-Water Slurries; and (5) Design of a Wet-Handling Plant From the Mine to the Gasifier Using Slurry Transport. Wet-size reduction, that is crushing in the presence of flowing water in certain types of high-throughput crushers, can reduce fines generation and power consumption while increasing throughput rates and providing a safe, dust-free operation. A coal-water handling system for coal gasification will require pumping of slurries of various size consists and solids concentrations for the short in-plant distances. Measurements were made with a typical gasifier feed-size consist in water slurries with coal concentrations of from 40 to 60 weight percent. Pumping characteristics were measured in a 2-inch pipeloop test facility, and rheological properties were measured with an extrusion rheometer. An experimental apparatus was designed and constructed to investigate the conditions for submerged oxidation pretreatment of caking coals.

• Research Organization: Institute of Gas Technology, Chicago, IL (United States)
• DOE Contract Number: AC21-78ET11330
• OSTI ID: 7182173
• Report Number(s): FE-2806-17
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
COMMINUTION
HYDRAULIC TRANSPORT
COAL GASIFICATION
COAL PREPARATION
ENERGY DEMAND
RESOURCE CONSERVATION
CAKING POWER
CONTROL
CRUSHING
DUSTS
EXPERIMENTAL DATA
OPTIMIZATION
OXIDATION
PARTICLE SIZE
WATER
WATER REMOVAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DATA
DEMAND
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
HYDROGEN COMPOUNDS
INFORMATION
MATERIALS
NUMERICAL DATA
OXYGEN COMPOUNDS
REMOVAL
SIZE
THERMOCHEMICAL PROCESSES
TRANSPORT
010404* - Coal
Lignite
& Peat- Gasification
013000 - Coal
Lignite
& Peat- Transport
Handling
& Storage