Abstract
Excessive oxygen content in the feed water of industrial boilers will cause oxidative corrosion on the metal surface, resulting in grooves or even thinning of the metal tube wall, resulting in trachoma until it is completely damaged. Therefore, the quality of the deoxidation effect greatly impacts the service life of industrial boilers and directly affects the economic benefits of enterprises. Automatic equipment and PID parameter adjustment are used to improve the deoxygenation performance of the deaerator system, making the oxygen content of the water in the industry meet the standard, thereby reducing the oxidation and corrosion of pipelines and prolonging the practical life of the equipment. This article mainly introduces Shanxi Yaxin Energy Group Co., Ltd. and Xinneng Technology Co., Ltd. 's 220-ton CDQ coke oven with co-production 120T SS98 high-temperature and high-pressure steam boiler, supporting a set of XNC-130 deaerator produced by Lianyungang Huagang Power Equipment Co., Ltd., the design output is 130t/h, the working pressure is 0.03MPa, the working temperature is 104℃, the design pressure is 0.3MPa, the design temperature is 120℃, the water tank volume is 50m³, and the material Q345R. The system uses Siemens PLC, Rosemount pressure transmitter, regulating valve and other equipment combined with PID control algorithm to achieve pressure and liquid level adjustment and the best deaeration effect.
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