Laboratory evaluation of high-temperature sulfur removal sorbents for direct coal-fired turbines: Final report

Technical Report · Mon Jun 01 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/6963243· OSTI ID:6963243

Newby, R. A.; DeZubay, E. A.; Chamberlin, R. M.

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.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
• DOE Contract Number: AC21-85MC22087
• OSTI ID: 6963243
• Report Number(s): DOE/MC/22087-2543; ON: DE88001041
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
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
VERY HIGH TEMPERATURE