skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Denitrification of combustion gases. [Patent application]

Abstract

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.

Inventors:
Issue Date:
OSTI Identifier:
6294992
Assignee:
Dept. of Energy TIC; ERA-06-031120; EDB-81-100296
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Yang, R.T. Denitrification of combustion gases. [Patent application]. United States: N. p., 1980. Web.
Yang, R.T. Denitrification of combustion gases. [Patent application]. United States.
Yang, R.T. Thu . "Denitrification of combustion gases. [Patent application]". United States.
@article{osti_6294992,
title = {Denitrification of combustion gases. [Patent application]},
author = {Yang, R.T.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {10}
}