Development work for an advanced coal gasification system for electric power generation from coal directed toward a commercial gasification generating plant, Phase II. Volume 12. Cold-flow model testing of a two-stage entrained-flow slagging coal gasifier

Technical Report · Thu Dec 01 00:00:00 EST 1977

DOI:https://doi.org/10.2172/5206197· OSTI ID:5206197

To obtain qualitative information regarding the operating characteristics of the two-stage entrained-flow coal gasifier, a series of cold flow tests was conducted in a scale model of the proposed prototype gasifier. Common, unreacting substances were used to simulate the flow of anticipated components in the prototype, with air representing product gas, granulated cork (between 40- and 50-mesh USS) representing both coal and char feeds, and glycerine simulating the flow of slag in the lower stage (Stage I) of the gasifier. The flow rates for these substances were determined by matching, as closely as was possible, numerical values of various dimensionless groups in the model to those expected in the prototype. Since the primary objective of the cold model was to obtain some insight into the operation of the prototype, several aspects of the flow patterns in both stages were examined, including possible problem areas concerned primarily with refractory erosion, slag drainage, and particulate agglomeration. The results of these tests, the majority of which were recorded photographically, indicated that the gas solids mixing in both stages was generally quite intense. Based upon the results, as well as the results of the previous tests, FWEC concluded that, after incorporating recommended geometry changes into the gasifier design, further tests should be conducted in a small reacting pilot plant so that more detailed information could be obtained, especially with regard to the effects of the reactions on the behavior of the flows within both the upper and lower stages.

• Research Organization: Foster Wheeler Energy Corp., Livingston, NJ (USA)
• DOE Contract Number: EX-76-C-01-1521
• OSTI ID: 5206197
• Report Number(s): FE-1521-31
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION PLANTS
FUNCTIONAL MODELS
AGGLOMERATION
CHARS
COAL
COAL GAS
ENTRAINMENT
EROSION
FLOW RATE
MIXING
OPERATION
REFRACTORIES
SIMULATION
SLAGS
TESTING
CARBONACEOUS MATERIALS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
INDUSTRIAL PLANTS
010404* - Coal
Lignite
& Peat- Gasification