火电厂汽水化学导则 第2部分：锅炉炉水磷酸盐处理

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1、ICS27.100F23七自口J八尸六八八八八J翎.R写.二1,300&-LUU4111L中华人民共和国电力行业标准DL/T805.2一2004火电厂汽水化学导则第2部分:锅炉炉水磷酸盐处理GuidelineforcyclechemistryinfossilplantsPart2:Phosphatetreatmentfordrumunits2004-03-09发布2004-06-01实施中华人民共和国国家发展和改革委员会发布DL/T805.2一2004目次前言11范围·········································

2、·········································································⋯⋯1，‘规范性引用文件···································································································⋯⋯1内J术语········································。···。·································。·······

3、···························⋯⋯14总则··················································································································⋯⋯2lf︶磷酸盐处理时的炉水质量标准··················································。······························⋯⋯36汽包锅炉炉水处理方式的选择·············

4、·························。··········································⋯⋯47检测方法············································································································⋯⋯5siX药品纯度要求·············。···································································

5、·····················⋯⋯6O了炉水取样与加药···································································································⋯⋯61一们1炉水质量劣化时的处理措施·················································································。··⋯6DL/T805.2一2004前..‘-南DLJT805《火电厂汽水化学导则》分为

6、4部分:第1部分:直流锅炉给水加氧处理;第2部分:锅炉炉水磷酸盐处理;第3部分:锅炉炉水氢氧化钠处理;第4部分:锅炉给水处理。本部分为DL/T805的第2部分，是根据原中华人民共和国国家经济贸易委员会电力司《关于确认1999年度电力行业标准制、修订计划项目的通知》(电力【2000]22号文第54项)的安排进行的。炉水磷酸盐处理已有几十年的应用历史。随着机组参数和给水水质的提高，磷酸盐处理不断出现一些新的问题，然而通过研究，对磷酸盐处理机理有了新的认识，目前己发展有多种处理方式。为了提高我国应用该工艺的水平和指导电厂正确选用合理的处理方式，特此制订本

7、部分。根据机组的特性、锅炉炉水磷酸盐隐藏现象及由此造成炉管腐蚀的不同程度而采用不同的处理方式，是本部分的主要特点。本部分对不同磷酸盐处理方式规定了炉水电导率等控制指标，以控制锅炉杂质的含量;通过对炉水加药、取样、检测方法和药品纯度的规定，使炉水磷酸盐处理规范化、合理化。另外，本部分还提出了炉水质量劣化时的处理措施。本部分主要根据国内电厂的运行经验并参考国外标准制订。本部分由中国电力企业联合会提出。本部分由电力行业电厂化学标准化技术委员会归口并解释。本部分主要负责起草单位:国电热工研究院、山西电力科学研究院。本部分主要起草人:孙本达、宋敬霞、尚玉珍。

8、DL/T805.2一2004火电厂汽水化学导则第2部分:锅炉炉水磷酸盐处理1范围本部分给出了火力发电厂汽包锅炉炉水进行各种