Control of SO/sub x/ emissions by in-furnace sorbent injection: Carbonates vs hydrates
High temperature, isothermal data on SO/sub 2/ by calcium based sorbents were obtained in a dispersed-phase reactor for limestones, dolomites, hydrated calcitic limes, and hydrated dolomitic limes as a function of Ca/S molar ratio, temperature, and SO/sub 2/ partial pressure. The experimental results indicate that SO/sub 2/ capture is approximately linearly dependent on Ca/S molar ratio and relatively insensitive to SO/sub 2/ partial pressure above 2000 ppm. SO/sub 2/ capture is a strong function of general sorbent class; dolomitic sorbents are better than calcitic materials on a equivalent calcium basis and hydrated materials are more reactive than carbonates. Computer model predictions based on a grain formulation, available fundamental rate data, and measured surface areas accurately predict limestone performance.
- Research Organization:
- Dept. of Chemical Engineering, Univ. of Utah, Salt Lake City, UT 84112
- OSTI ID:
- 6354325
- Report Number(s):
- CONF-851123-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360601 -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORBENTS
ADSORPTION
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
CALCINATION
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CONTROL
DECOMPOSITION
DESULFURIZATION
DOLOMITE
FURNACES
HIGH TEMPERATURE
HYDRATES
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
MOLECULAR STRUCTURE
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL
PRESSURE DEPENDENCE
PYROLYSIS
QUANTITY RATIO
ROCKS
SEDIMENTARY ROCKS
SIMULATION
SORPTION
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
SYNTHESIS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES