脱硫脱硫塔内衬不结实附着。在脱硫塔防腐施工中，由于玻璃鳞片资料未按施工工艺停止施工，固化时间缺乏，招致玻璃鳞片防腐资料与钢板粘结不良。在运转过程中，一些防腐蚀涂层被烟气和浆液冲刷掉，一些防腐蚀涂层收缩零落，招致烟气腐蚀塔壁，招致脱硫塔浆液走漏。另外，脱硫塔喷雾层的装置角度和设计中存在个别喷嘴的偏向，招致塔壁防腐层内衬长时间喷浆，形成衬里零落和塔壁腐蚀。钛板。石膏结晶是脱硫塔浆体固体的主要成分，其次是少量的亚硫酸钙和碳酸钙颗粒、粉煤灰等烟气中的杂质。这些物质对塔壁的防腐涂层有很强的磨损作用。
该区域主要是腐蚀和磨损，复合维护涂层可用于维修或预防性维护。选用KN17高分子陶瓷聚合物和KN22高分子资料，构成具有耐磨外层和防腐蚀内层的复合涂层构造。涂层的寿命取决于外表上的耐磨层的厚度。依据施工经历数据，脱硫泵厂家在脱硫泵内涂KN17特种耐磨涂料时，每4mm厚度可对脱硫塔提供约10年的维护。
Common problems of desulfurization pump include:
Slurry leakage of desulfurization pump wall, drum of desulfurization tower spray layer lining, partial peeling, corrosion of tower wall steel plate exposed at different levels, serious thinning of tower wall, corrosion perforation of tower wall steel plate, and serious corrosion of the root of slurry pipeline support frame.
The main causes of corrosion are:
The inner lining of desulfurization tower is not firm and attached. In the anti-corrosion construction of desulfurization tower, the construction of glass flake data was not stopped according to the construction process and the curing time was lack, resulting in poor adhesion between glass flake anti-corrosion data and steel plate. During operation, some anti-corrosion coatings are washed away by flue gas and slurry, and some anti-corrosion coatings shrink and fall, resulting in flue gas corrosion of tower wall and slurry leakage of desulfurization tower. In addition, there are some deviation of the spray nozzle in the spray angle of the desulfurizing tower and the deviation of the individual nozzle, which leads to the long time shotcrete lining of the lining layer of the tower wall, resulting in the lining falling and the wall corrosion. Titanium plate. Gypsum crystallization is the main component of slurry solid of desulfurization tower, followed by a small amount of impurities in flue gas such as calcium sulfite, calcium carbonate particles and fly ash. These substances have a strong wear effect on the anti-corrosion coating of the tower wall.
Remedial measures for anti-corrosion coating of desulfurization tower
This area is mainly corrosion and wear, and the composite maintenance coating can be used for repair or preventive maintenance. Kn17 polymer ceramic polymer and kn22 polymer material are selected to form a composite coating structure with wear-resistant outer layer and anti-corrosion inner layer. The life of the coating depends on the thickness of the wear-resistant layer on the surface. According to the construction experience data, when the desulfurization pump manufacturer applies kn17 special wear-resistant coating in the desulfurization pump, the desulfurization tower can be maintained for about 10 years every 4mm thickness.
