| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for sufficiently reducing NOx emission from a gasification power plant. <P>SOLUTION: The gasification power plant provided with a gasification device 3 providing formulation gas 4 from gasification material 1 by gasification agent 2, a gas purification device 5 providing gasified gas fuel 4a by purifying the formulation gas 4, combustion devices 6a, 6b, 6c generating power, a generator 7, is provided with; a storage device 16 storing a predetermined relational expression among methane concentration of the gasified gas fuel, conversion ratio of nitride to NOx of the combustion device, and equivalent ratio in a combustion zone of the combustion device relating to reduction of the nitride to N2; a methane concentration measurement device 17 providing methane concentration measurement value of the gasified gas fuel, an operation device 11 providing NOx concentration estimation value of combustion exhaust gas from the methane concentration measurement value and the equivalent ratio in operation of the combustion device; a reducing agent supply means 13 supplying reducing agent 10 to the combustion exhaust gas A; and a control means 14 controlling quantity of reducing agent based on NOx concentration estimation value. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
