Method of desulfurizing combustion gases
This patent describes a method of desulfurizing gaseous products of combustion. It comprises the steps of: burning a sulfur-containing solid fuel within a combustion chamber to produce flyash and combustion gases comprising a sulfurous gas; heating a particulate calcinable compound comprising a compound selected from the group consisting of the carbonates of magnesium, calcium, sodium, and mixtures thereof, in a selected temperature zone within the combustion chamber for a residence time sufficient for calcination of the calcinable compound to its respective oxide, wherein the particle size of the calcinable compound, the selected temperature zone and the residence time are selected to effect calcination of a substantial amount of the calcinable compound to its respective oxide; removing the oxide of the calcinable compound from the combustion chamber; removing the combustion gases from the combustion chamber; and treating the removed combustion gases with the oxide to remove a substantial amount of the sulfurous gas from the combustion gases.
- Assignee:
- Detroit Stoker Co., Monroe, MI
- Patent Number(s):
- US 4867955
- Application Number:
- PPN: US 7212000A
- OSTI ID:
- 5339677
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
CALCINATION
CHEMICAL REACTIONS
COMBUSTORS
CONTROL
DECOMPOSITION
DESULFURIZATION
GASEOUS WASTES
OXIDATION
POLLUTION CONTROL
PYROLYSIS
THERMOCHEMICAL PROCESSES
WASTES