Quality appraisal of pulverized coal furnace

Pulverized coal furnace is a boiler that uses pulverized coal as fuel. It uses the high-temperature and high-speed oxidation reaction of pulverized coal during combustion to release combustion heat and generate steam to drive a steam turbine to generate electricity.
Compared with traditional coal-fired boilers, pulverized coal has a large surface area, fast reaction rate, and high combustion efficiency during combustion, which can fully utilize the calorific value of coal and improve power generation efficiency; due to the sufficient oxidation reaction of pulverized coal during combustion, the pollutant content in flue gas emissions is low, which can reduce the impact on the environment.
In the case of pulverized coal furnace quality appraisal, Zhongke Testing can provide pulverized coal furnace quality appraisal services.

1. Equipment appearance and structure:
Check the appearance integrity of the equipment to ensure that there is no obvious damage, corrosion or deformation; check the welding, sealing and connection parts of the equipment structure; ensure that it is of good quality, solid and reliable.
material selection and manufacturing process:
2. Check the materials used in the equipment, such as high-temperature resistant alloys and corrosion-resistant materials for components such as furnaces and pulverized coal nozzles. Evaluate the manufacturing process to ensure that the equipment manufacturing process complies with relevant standards and specifications, and that manufacturing accuracy, surface treatment, etc. meet requirements.
3. Pulverized coal combustion system:
Check the pulverized coal conveying system to ensure that the conveying process is stable and free of blockage or leakage. Evaluate the pulverized coal drying and preheating system to ensure that the humidity and temperature of the pulverized coal meet the combustion requirements. Check the design of the pulverized coal nozzle and combustion furnace to ensure the stability of the combustion process and the uniformity of heat distribution.
4. Flue gas treatment system:
Check the emission control equipment of the equipment, such as dust collectors, desulfurization devices and denitrification devices, to ensure that their design and operation comply with environmental requirements. Evaluate the efficiency and emission control effect of the flue gas treatment system to ensure that pollutant emission levels comply with relevant standards.
5. Safety and reliability:
checks the safety protection facilities of the equipment, such as temperature sensors, overvoltage protection, spark detectors, etc., to ensure that the equipment has safe automatic shutdown and alarm functions. Evaluate the reliability and operational stability of the equipment, such as the flow stability of pulverized coal transportation, the controllability of combustion efficiency, etc.
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The pulverized coal furnace purchased by a thermal power company was shut down for maintenance many times but the problem could not be solved and it could be used normally, so a dispute arose with the equipment manufacturer.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" in the pulverized coal furnace involved.
appraisal analysis results: The
appraisal analysis expert group discussed the relevant information and on-site investigation of the pulverized coal furnace involved in the case and conducted a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
the pulverized coal furnace involved in the case has quality problems.