High reactivity sorbents for SO/sub 2/ control

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5655131

Drehmel, D C; Kirchgessner, D A; Bakes, S L

It has been shown that the primary variable affecting sorbent reactivity at high temperature or at low temperature with water droplets is surface area. For the development of high surface area during furnace injection, some limestones appear to be superior to others and can be selected accordingly. Even more striking are the differences in surface area development and sulfur capture between classes of commercially available sorbents. Dolomitic sorbents generally outperform their calcitic counterparts, and hydrates are clearly preferable to carbonates on the basis of SO/sub 2/ capture. It has been shown further that sorbents can be modified in a number of ways to enhance their performance. Limestones can be precalcined to high surface areas and injected downstream from the burner to preserve their reactivity. Calcitic materials can be pressure hydrated to increase their reactivity over atmospheric hydrates, and hydration parameters can apparently be adjusted to increase reactivity even further. Finally, additives are available which promote SO/sub 2/ capture.

• OSTI ID: 5655131
• Report Number(s): CONF-860447-
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION
ABSTRACTS
ACTIVATION ENERGY
ADDITIVES
ADSORBENTS
AIR POLLUTION ABATEMENT
ALKALINE EARTH METAL COMPOUNDS
CALCINATION
CALCITE
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DECOMPOSITION
DESULFURIZATION
DOCUMENT TYPES
DOLOMITE
DROPLETS
ENERGY
FURNACES
HYDRATES
HYDRATION
HYDROGEN COMPOUNDS
LEADING ABSTRACT
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MEETINGS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION ABATEMENT
PYROLYSIS
ROCKS
SEDIMENTARY ROCKS
SOLVATION
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE AREA
SURFACE PROPERTIES
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
WATER