Coal-fired boiler combustion dynamic field rapid calculation and real-time display system and calculation method

Abstract

The invention discloses a coal-fired boiler combustion dynamic field rapid calculation and real-time display system and a calculation method. The system comprises a DCS data processing module, a CFD (computational fluid mechanics) database module, a prediction calculation module and a combustion display module. Through combination of a neural network and CFD numerical value simulation, in-furnacethree-dimensional combustion power fields at continuous any working condition points are calculated rapidly from in-furnace three-dimensional combustion power field data at discrete limited working condition points, and the in-furnace combustion situations are displayed in various forms. By the coal-fired boiler combustion dynamic field rapid calculation and real-time display system and the calculation method, operators of a power plant can know the in-furnace combustion situations under the various working conditions intuitively and rapidly, influence on combustion by various factors is comprehensively evaluated and reference is provided for regulation and control of in-furnace combustion.

Description

technical field [0001] The invention relates to a technical method in the field of coal-fired thermal power generation, in particular to a system and method for fast calculation and real-time display of the combustion dynamic field of a coal-fired boiler in a power station. Background technique [0002] At present, it has become normal for coal-fired thermal power plants to use non-design coal types to reduce operating costs. In addition, frequent load adjustments to adapt to grid peak shaving will cause boilers to deviate from their optimal operating conditions and cause combustion efficiency problems. decrease and increase in pollutant emissions. Boiler high-efficiency and low-pollution combustion control under complex and variable working conditions has become a huge challenge for operators. The most important reason is that operators cannot accurately obtain information on the three-dimensional flow field, temperature field and component field in the furnace, which makes...

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Problems solved by technology

[0004] Purpose of the invention: The present invention provides a system and method capable of quickly calculating and real-time displaying the three-dimensional combustion dynamic field of a large coal-fired boiler for the problem that on-site operators of a coal-fired thermal power plant cannot accurately and timely understand the combustion conditions in the boiler

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