Simulation method and device for generation value of combustion characteristic of pulverized coal of power station boiler

Abstract

The invention discloses a simulation method and a simulation device for a generation value of a combustion characteristic of pulverized coal of a power station boiler, and solves the technical problem that the whole rule characteristics of combustion, flowing and heat transfer in the boiler cannot be measured due to the fact that a conventional hearth cannot be used for manufacturing a test bed of a full-size model as the size of the hearth is larger and larger. The method comprises the following steps: simulating a combustion process of the pulverized coal of the boiler in a preset boiler combustor model subjected to gridding division through a basic conservation equation, a turbulent flow model, a turbulent gas-solid two phase flow model, a gas phase turbulent combustion model, a pulverized coal particle combustion model, a radiation heat exchange model and an NOX generation model; determining a gas flow field in a boiler combustor, a temperature field in the boiler combustor, flue gas component distribution in the boiler combustor, a moving trace of pulverized coal particles in the boiler combustor, radiation heat flow on the wall surface of the boiler combustor, the boiler combustion efficiency and an NOX discharge amount according to a simulation result.

Description

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AI Technical Summary

Problems solved by technology

In this embodiment, the preset boiler burner model is partitioned and meshed; the basic conservation equation, turbulent flow model, turbulent gas-solid two-phase flow model, gas phase turbulent combustion model, pulverized coal particle combustion model, radiation heat transfer Model and NOX generation model simulate the combustion process of boiler pulverized coal in the preset boiler burner model after grid division; determine the airflow field in the boiler burner, the temperature field in the boiler burner, T...

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