Boiler ash-blowing optimization system and optimization method thereof

Abstract

The invention discloses a boiler ash-blowing optimization system and a boiler ash-blowing optimization method and relates to the technical field of boiler ash-blowing. The boiler ash-blowing optimization system comprises a DCS (distributed control system) and a monitoring system, wherein the DCS is in communicated connection with the monitoring system, and the monitoring system comprises a water-cooling wall ash deposition monitoring module based on a radiation mode, a horizontal flue heat-exchange area ash monitoring module based on a convection mode and an air preheater ash deposition monitoring module. An automatic ash-blowing decision suggestion system based on the DCS is established to be communicated with a corresponding DCS server, pollution rates of heated surfaces are computed and analyzed in real time, a high pollution rate limit is obtained through further experiments, and light indicator warning or an automatic ash-blowing command is achieved once the high limit is obtained, so that ash-blowing operation in actual running is guided effectively.

Description

technical field [0001] The invention relates to the technical field of boiler soot blowing, in particular to a boiler soot blowing optimization system and an optimization method thereof. Background technique [0002] Today, with the increasing requirements of national policies for energy conservation and emission reduction, various power generation companies are facing multiple pressures such as rising coal prices and more stringent emission indicators, and their profit margins are constantly being compressed. Therefore, it is our urgent need to continuously tap potential and increase efficiency. Boiler is a major energy loss account of power plants, so improving its thermal efficiency and reducing coal consumption for power generation has become an important means to improve the economic benefits of enterprises during operation adjustment. [0003] The ash and slagging on the heating area of ​​the boiler will not only reduce the heat transfer efficiency and increase the hea...

AI Technical Summary

Problems solved by technology

[0003] The ash and slagging on the heating area of ​​the boiler will not only reduce the heat transfer efficiency and increase the heat loss of the exhaust gas, but also cause corrosion on the heating surface and reduce the service life of the equipment, which greatly affects the safe and economical operation of the unit. Effective cleaning of dust on the heating surface

However, due to many reasons such as poor quality of soot blowing steam, failure of soot blowing system or improper soot blowing method, serious blockage of air preheater caused the unit to be shut down, soot blower failure caused leakage of water wall, resulting in accidental shutdown and other accidents. Occurs, the soot blowing method on the heating surface of the furnace needs to be optimized urgently

Images