Once-through boiler corrosion and scaling risk diagnosis method

Abstract

The invention discloses a once-through boiler corrosion and scaling risk evaluation and diagnosis method. The method comprises the step of judging nine risk factors such as whether a once-through boiler runs or not, whether reasonable boiler shutdown protective measures are taken or not, whether reasonable water washing is carried out or not, whether a once-through boiler water supply system container copper or not, whether a reasonable water treatment way is adopted or not, whether all chemical instruments are provided or not, whether chemical addition equipment has high reliability and availability or not, whether monitoring data are qualified or not and whether timely treatment is carried out according to a tertiary treatment rule or not, so that the systematic step-by-step diagnosis method is formed, and a conclusion that corrosion and scaling tendency is serious or no serious corrosion or scaling tendency exists is obtained through evaluation. By means of the method, boiler corrosion and scaling factors can be known in advance, so that the boiler corrosion speed is effectively decreased, boiler pipe sediment and scale amount are reduced, the steam quality is improved, and safe and economical running of a unit is ensured.

Description

technical field [0001] The invention relates to a method for diagnosing boiler corrosion and scaling risks, in particular to a method for diagnosing the risk of corrosion and scaling of thermal equipment in a once-through boiler. Background technique [0002] Electric power is an important basic industry for national economic and social development. The safe production of electric power enterprises is related to the safety of the country and people's life and property, the healthy development of the national economy, people's hearts and social stability. Statistics show that damage accidents caused by boiler corrosion and scaling account for the vast majority of power production accidents. In the past 20 years, my country has recorded a total of 40,533 boiler tube damage accidents, of which 80% of the furnace tube failures caused power plant failures. Accident shutdown. At present, checking the water vapor quality of the thermal system is the main method for diagnosing the c...

AI Technical Summary

Problems solved by technology

However, the once-through boiler is a huge and complex system, and there are many factors that can cause corrosion and scaling of the boiler system. Only by analyzing the water vapor index to determine the risk of corrosion and scaling of the system has certain limitations.

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