Laboratory evaluation of high-temperature sulfur removal sorbents for direct coal-fired turbines: Final report
Description
Direct coal-fired turbine concepts currently being developed require substantial levels of sulfur removal from high-temperature gas streams. Calcium-based sorbents, limestones, dolomites, limes and lime hydrates, are capable of sulfur removal in direct coal-fired turbine combustor environments at temperature up to 1200/degree/C. Two types of desulfurizer processes are considered in this report using calcium- based sorbents: fluidized bed desulfurizer using coarse sorbent particles (300-1000 ..mu..m), and entrained desulfurizer using fine sorbent particles (1-40 ..mu..m). Small-scale laboratory tests were performed on a variety of calcium-based sorbents to determine the kinetics of sulfation and sulfidation over ranges of conditions applicable to both types … continued below
Physical Description
Pages: 453
Creation Information
Newby, R.A.; DeZubay, E.A. & Chamberlin, R.M. June 1, 1987.
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Westinghouse Electric Corporation. Research & Development Center.
Publisher Info: Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development CenterPlace of Publication: Pittsburgh, Pennsylvania
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Description
Direct coal-fired turbine concepts currently being developed require substantial levels of sulfur removal from high-temperature gas streams. Calcium-based sorbents, limestones, dolomites, limes and lime hydrates, are capable of sulfur removal in direct coal-fired turbine combustor environments at temperature up to 1200/degree/C. Two types of desulfurizer processes are considered in this report using calcium- based sorbents: fluidized bed desulfurizer using coarse sorbent particles (300-1000 ..mu..m), and entrained desulfurizer using fine sorbent particles (1-40 ..mu..m). Small-scale laboratory tests were performed on a variety of calcium-based sorbents to determine the kinetics of sulfation and sulfidation over ranges of conditions applicable to both types of desulfurizer processes. Correlations are developed in the report for the effect of pressure; temperature, and particle size. Engineering models are also developed for both desulfurizer types that incorporate the laboratory reaction kinetics and predict potential commercial performance and performance trends. It is concluded that both desulfurizer concepts can be effective in direct coal-fired turbines, with calcium-to-sulfur molar feed ratios ranging from 1.5 to 3.0, if the correct calcium-based sorbent is selected, and if applicable design and operating conditions are identified. Both desulfurizer concepts have limitations and key development requirements, and site and fuel specific engineering assessment is required to select the best concept for a given combustor system. The influence of the desulfurizer concepts on turbine protection, through their influence on particle loading and alkali release must also be assessed. 51 refs., 73 figs., 9 tabs.
Physical Description
Pages: 453
Notes
NTIS, PC A20/MF A01; 1.
Subjects
Keywords
- Absorption
- Additives
- Adsorbents
- Alkaline Earth Metal Compounds
- Bench-Scale Experiments
- Calcination
- Calcium Carbonates
- Calcium Compounds
- Calcium Oxides
- Carbon Compounds
- Carbonaceous Materials
- Carbonate Minerals
- Carbonate Rocks
- Carbonates
- Chalcogenides
- Chemical Reaction Kinetics
- Chemical Reactions
- Coal
- Coal-Fired Gas Turbines
- Combustion
- Combustion Products
- Combustors
- Corrosion
- Data
- Decomposition
- Deposits
- Desulfurization
- Document Types
- Dolomite
- Elements
- Energy Sources
- Entrainment
- Erosion
- Experimental Data
- Fabrication
- Fluidized Beds
- Fluidized-Bed Combustion
- Fossil Fuels
- Fossil-Fuel Power Plants
- Fuel-Air Ratio
- Fuels
- Gas Turbines
- Hot Gas Cleanup
- Hydrogen Compounds
- Hydrogen Sulfides
- Information
- Kinetics
- Limestone
- Machinery
- Magnesium Carbonates
- Magnesium Compounds
- Materials
- Minerals
- Nonmetals
- Numerical Data
- Oxidation
- Oxides
- Oxygen Compounds
- Particle Size
- Particles
- Particulates
- Power Plants
- Pressure Effects
- Progress Report
- Purification
- Pyrolysis
- Reaction Kinetics
- Removal
- Rocks
- Sedimentary Rocks
- Sintering
- Size
- Sorption
- Sorptive Properties
- Sulfidation
- Sulfides
- Sulfur
- Sulfur Compounds
- Sulfur Content
- Sulfur Dioxide
- Sulfur Oxides
- Surface Properties
- Temperature Effects
- Thermal Power Plants
- Thermochemical Processes
- Turbines
- Turbomachinery 010800* -- Coal, Lignite, & Peat-- Waste Management
- Very High Temperature
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- Other: DE88001041
- Report No.: DOE/MC/22087-2543
- Grant Number: AC21-85MC22087
- Digital Object Identifier: https://doi.org/10.2172/6963243
- Office of Scientific & Technical Information Report Number: 6963243
- Archival Resource Key: ark:/67531/metadc1188699
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- June 1, 1987
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- July 2, 2018, 10:52 p.m.
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- March 3, 2020, 1:44 p.m.
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Newby, R.A.; DeZubay, E.A. & Chamberlin, R.M. Laboratory evaluation of high-temperature sulfur removal sorbents for direct coal-fired turbines: Final report, report, June 1, 1987; Pittsburgh, Pennsylvania. (https://digital.library.unt.edu/ark:/67531/metadc1188699/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.