华电技术 ›› 2018, Vol. 40 ›› Issue (5): 56-57.

• 技术交流 • 上一篇    下一篇

1050MW机组石膏含水率高的原因分析及处理

  

  1. 1.中国能源建设集团华北电力试验研究院有限公司,天津〓300162; 2.新疆生产建设兵团红星发电有限公司,新疆哈密〓839000
  • 出版日期:2018-07-25

Cause analysis and treatment of high moisture content of gypsum in 1050MW unit

  1. 1.China Energy North China Electric Power Test and Research Institute Company Limited, Tianjin 300162, China; 2.Xinjiang Production and Construction Corps Hongxing Power Generation  Company Limited, Hami 839000, China
  • Published:2018-07-25

摘要:

针对某1050MW机组石膏含水率高的问题,对石灰石粉品质、吸收塔浆液品质、真空泵出力、真空皮带脱水机真空度、旋流器旋流底流含固量等影响因素进行逐一排查。确定石膏含水率高的主要原因是真空皮带脱水机安装精度不高,石膏产生裂纹,导致真空度降低;次要原因是吸收塔浆液的pH值偏高,石膏晶种少。通过采取相应措施,解决了石膏含水率高的问题。

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Abstract:

Aiming at the problem of high moisture content of gypsum in a 1050MW unit, the influence factors such as the quality of limestone powder, the quality of the absorber, the vacuum pump, the vacuum degree of vacuum belt dewatering machine and the solid amount in underflow of the swirl are investigated. The main reason to determine the high water content of gypsum is the low installation precision of vacuum belt dewatering machine, and the cracks in gypsum results in the reduction of vacuum degree. The secondary reason is that the pH of the absorber slurry is high and the gypsum crystal is rare. By taking corresponding measures, the high water content of gypsum is solved.

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