The invention discloses a method for boiler
combustion optimization with the combination of the irreversible
thermodynamics. The method is characterized by comprising the following steps that (1) when
combustion optimization adjustment is conducted on a boiler, each time of parameter adjustment serves as an original working condition, overall modeling is conducted on the researched boiler, numerical
simulation is conducted on the working conditions on the basis of a CFX platform, the carbon contact in
fly ash and the emission value of
NOx in each working condition can be given according to a
simulation result, and
original data required by calculation of
radiation entropy generation and
convection entropy generation can be obtained; (2)
radiation entropy generation, conversion entropy generation and flow-resistance entropy generation of a heat-receiving face are calculated; (3) overall entropy generation of the heat-receiving face, the boiler heat efficiency, the carbon contact in the
fly ash and the emission value of
NOx serve as objective functions, and a
combustion model is optimized through a least square
support vector machine. According to the method, the irreversible
thermodynamics is combined with boiler combustion optimization, so that the boiler can be better guided for actual operation.