Assessment of feedability of Kerr-McGee ash concentrate

Technical Report · Thu Sep 01 04:00:00 EDT 1983

DOI:https://doi.org/10.2172/6530342· OSTI ID:6530342

Moujaes, S. F.

Tests were performed to determine the feasibility of conveying Kerr-McGee ash concentrate from storage bins through the screw feeder to the Gesellschaft feur Kohle-Technologie (GKT) gasifier. A study comparing flow characteristics of coal, for which the GKT system was designed, and Kerr-McGee ash concentrate (KMAC) showed that properties were similar, although KMAC had a lower bulk density. A computer simulation based on these properties was then applied to the conveying system. Results showed that KMAC flow will be unstable for almost all the KMAC samples studied when the gradients in gas and solid contact pressure in the convergent outlet of the screw feeder are very large, and when the scale factor is relatively high, i.e., greater than the critical value of 460. However, use of larger bins coupled with operation of the screw feeder at a slower rpm should result in stable operation and satisfy the flow requirements of the process design. GKT concluded that while improvements can be made to boost throughput and increase stability, serious consideration should be given to an alternate pneumatic conveying system to the gasifier. 3 references, 4 figures, 4 tables.

• Research Organization: Jenike and Johanson, Inc., North Billerica, MA (USA); International Coal Refining Co., Allentown, PA (USA)
• DOE Contract Number: AC05-78OR03054
• OSTI ID: 6530342
• Report Number(s): DOE/OR/03054-51; ON: DE85001489
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUEFACTION PLANTS
COAL LIQUIDS
COMPUTER CALCULATIONS
CONTAINERS
DATA
DEASHING
DEMONSTRATION PLANTS
FLUID FLOW
FLUIDS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
GASIFICATION
GKT PROCESS
HOPPERS
INDUSTRIAL PLANTS
INFORMATION
LIQUEFACTION
LIQUIDS
NUMERICAL DATA
PNEUMATIC TRANSPORT
RESIDUES
SRC PROCESS
STORAGE
TECHNOLOGY ASSESSMENT
THERMOCHEMICAL PROCESSES
TRANSPORT
TWO-PHASE FLOW