文档介绍：Scientific Journal of Frontier Chemical Development
June , Volume 3, Issue 2, -41
Discussing of Boiler EDTA Cleaning Technics Conditions
Ruimin Wang 1,2, Shouhui Zhang 2, Xuejun Xie 1
1. Wuhan University, 430072
2. Xiangyang Power Plant, 441141
Email:
Abstract
The priciple and technics of the chemical cleaning with EDTA, the choice and control of technological conditions (including the concentration of EDTA, the temperature, the pH value, the velocity of flow and the cleanin-g time), the judgement on the ultimate cleaning and passivation, and the technological supervision of the chemical cleaning with the EDTA ammonium and sodium salt were illustrated. Chemical cleaning were characterized with simplicity, wide range, safety and shorter time spent in cleaning. In practice, the factors affecting EDTA cleaning performance, including the parameters such as, cleaner temperature, concentration, pH, flow rate; as well as the process of cleaning and the optimal cleaning to achieve the best cleaning performance. The #5 new-built boiler adopting EDTA ammonium salt as cleaner in the power plant is a good example of this case.
Keywords: Boiler; Chemical Cleaning; EDTA
锅炉EDTA清洗工艺条件探讨
王瑞民1,2，张首会2，谢学军1
1. 武汉大学，武汉430072
2. 襄阳电厂，襄阳441141
摘 要：本文介绍了EDTA化学清洗原理、工艺，EDTA钠盐和铵盐清洗工艺条件（包含EDTA浓度、温度、pH值、流速、清洗时间）选择、控制，清洗、钝化终点判定，清洗过程中技术监督；也介绍了某电厂#5新建锅炉采取EDTA铵盐清洗清洗范围、清洗回路、清洗工艺参数、清洗效果。认为