Denitrification of combustion gases. [Patent application]

Patent · Thu Oct 09 00:00:00 EDT 1980

OSTI ID:6294992

Yang, R T

A method for treating waste combustion gas to remove the nitrogen oxygen gases therefrom is disclosed wherein the waste gas is first contacted with calcium oxide which absorbs and chemically reacts with the nitrogen oxide gases therein at a temperature from about 100/sup 0/ to 430/sup 0/C. The thus reacted calcium oxide (now calcium nitrate) is then heated at a temperature range between about 430/sup 0/ and 900/sup 0/C, resulting in regeneration of the calcium oxide and production of the decomposition gas composed of nitrogen and nitrogen oxide gas. The decomposition gases can be recycled to the calcium oxide contacting step to minimize the amount of nitrogen oxide gases in the final product gas.

• DOE Contract Number: AC02-76CH00016
• Assignee: Dept. of Energy
• OSTI ID: 6294992
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
20 FOSSIL-FUELED POWER PLANTS
FLUE GAS
DENITRIFICATION
NITROGEN OXIDES
AIR POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
DESIGN
CALCIUM OXIDES
CHEMICAL REACTIONS
CHEMISORPTION
COAL
COMBUSTORS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CONTROL
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
GASEOUS WASTES
MATERIALS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
SEPARATION PROCESSES
SORPTION
WASTES
424000* - Engineering- Pollution Control Equipment- (1980-1989)
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions