Method and system for measuring high-temperature corrosion characteristics of boiler

Abstract

The invention provides a method and a system for measuring high-temperature corrosion characteristics of a boiler. The method comprises the following steps: establishing a calculation model for simulating combustion conditions of the boiler; selecting a calculation domain according to structural characteristics of the boiler, performing mesh generation on the calculation domain to obtain a mesh model of the boiler, and setting initial boundary conditions of the mesh model; simulating the combustion process of the boiler under each working condition according to the calculation module and the mesh model of which the initial boundary conditions are set; measuring the speed and temperature distribution information of each combustor in the boiler and distribution information of O2 and CO which correspond to each combustor under various working conditions in the simulated combustion process, and thus obtaining parameters which reflect the corrosion characteristics of the boiler under various loads. According to the scheme, the measurement difficulty can be reduced, the measurement cost is reduced, the measurement period is shortened, and guidance is provided for boiler transformation.

Description

technical field [0001] The invention relates to the technical field of boiler power generation, in particular to a method and system for measuring the high-temperature corrosion characteristics of a boiler. Background technique [0002] Energy is an important material basis of the national economy. Coal is one of the main energy sources in my country, accounting for about 70% of energy consumption. my country's power plant boilers are mainly coal-fired, and coal power accounts for about 70% of the country's total power generation. This coal-based energy structure will not change for a long time to come. According to the plan of the State Power Corporation, by 2020 it will reach more than 700 million kilowatts. Although the country has increased the use of clean energy in recent years, and the proportion of hydropower, solar energy, wind energy, geothermal power and nuclear power in power production has increased, by 2010, coal power will still account for 65.5% of my coun...

AI Technical Summary

Problems solved by technology

However, with the wide application of low NOx combustion technology, the trend of high temperature corrosion has increased significantly. On the other hand, the period of planned maintenance and shutdown has gradually extended with the development of power industry technology. The superposition of these two factors has led to the method of manual periodic inspection of corrosion. Failure, frequent boiler outage accidents caused by high temperature corrosion and burst tubes

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