Enhancing SNCR-aided combustion with oxygen addition
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- PRAXAIR TECH INC
- Publication Date
- 2008-06-11
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
Figure 1 
Figure 2
Abstract
Description
Invention field
[0001] The present invention relates to the combustion of hydrocarbon fuels, such as coal, in, for example, electric furnaces, and the reduction of nitrogen oxides produced during the combustion process. Background of the invention
[0002] Burning coal in the furnace of a power plant is still an important method of generating energy. Because it is believed that this combustion causes NO in the atmosphere X Emissions, which are believed to cause air pollution. There is still considerable interest in finding ways to reduce NO emissions into the atmosphere during combustion X Method of quantity.
[0003] A well-known reduction in NO emissions from boilers and furnaces X The method is to inject reagents such as ammonia, urea, cyanuric acid or ammonium carbonate into the combustion chamber, because the reagent forms an amine group (-NH 2 ), reacts with NO in the high-temperature combustion gas in the combustion chamber to form N 2 . This method is well known as a sele...