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Method to control NOX formation in fossil-fueled boiler furnaces

阅读:282发布:2022-09-28

专利汇可以提供Method to control NOX formation in fossil-fueled boiler furnaces专利检索,专利查询,专利分析的服务。并且The invention is directed to a method and apparatus for reducing the nitrogen oxide content of flue gases produced during operation of an external combustion engine or furnace. In the method moisture is dispersed into preheated combustion air prior to entrance of the combustion air into the combustion chamber of an external combustion engine or furnace.,下面是Method to control NOX formation in fossil-fueled boiler furnaces专利的具体信息内容。

1. A METHOD FOR REDUCING THE NITROGEN OXIDE CONTENT OF THE FLUE GAS OF EXTERNAL COMBUSTION FURNACES COMPRISING PREHEATING THE COMBUSTION AIR AND THEREAFTER ADDING TO SAID PREHEATED COMBUSTION AIR PRIOR TO INTRODUCTION OF SAID PREHEATED COMBUSTION AIR INTO A COMBUSTION CHAMBER A PREDETERMINED LEVEL OF MOISTURE, SAID MOISTURE BEING ADDED AT A LEVEL OF FROM ABOUT 2 PERCENT, BY WWIGHT TO ABOUT 6 PERCENT BY WEIGHT OF SAID COMBUSTION AIR, SAID COMBUSTION AIR BEING PREHEATED TO A TEMPERATURE SUCH THAT THE RELATIVE HUMIDITY OF THE COMBUSTION AIR AFTER ADDITION OF SAID MOISTURE IS LESS THAN ABOUT 25 PERCENT AND SAID MOISTURE BEING FULLY EVAPORATED PRIOR TO INTRODUCTION OF SAID COMBUSTION AIR INTO SAID COMBUSTION CHAMBER.
2. A method in accordance with claim 1 wherein said combustion air is preheated to a temperature of at least about 120*F prior to addition of said moisture.
3. A method in accordance with claim 1 wherein said combustion air is preheated to a temperature of at least about 200* F prior to addition of said moisture.
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