1、化学清洗及钝化镀膜方案

　　Chemical cleaning and Passivation Coating Plan

　　水力冲洗→脱脂、杀菌→化学清洗→漂洗→钝化预膜→水质处理保养

　　Hydrodynamic cleaning—degreasing, sterilization---chemical cleaning---blanch—passivation film—water treatment maintain

　　(1)水力冲洗

　　Hydrodynamic cleaning

　　因冷冻、热水系统是密闭的循环水系统，所以水力清洗只能尽量多启动几台水泵让所有的闭式水都循环起来，其后视水的浑浊度，尽可能排去混浊污水，最好是多冲洗几次配水管。

　　As the chilled and hot water system are sealed circulating water systems, so the hydrodynamic cleaning should be carried out with as many pumps as possible to circulate all closed water.

　　(2)脱脂、杀菌

　　Degreasing and sterilization

　　目的：杀菌、剥离污泥、清除油污

　　Purpose: sterilization, sludge stripping, oil pollution clearance

　　方法：投加H-1056清洗时间因系统状况而定，一般至液面无明显油珠时脱脂工作结束，时间大约2-5小时。

　　Method: add H-1056, and the cleaning time will be decided by the condition of the system. (Generally, the cleaning time is about 2-5hours.) The degreasing work could be finished while there are no obvious oil droplets.

　　(3)化学清洗

　　Chemical cleaning

　　目    的：清除污垢、浮锈

　　Purpose: cleaning the fouling and rust

　　方    法：在膨胀水箱直接投加络合清洗剂H-1070作24-36小时循环清洗，使清洗剂与设备管壁垢、浮锈发生反应，生成可溶性物质排出。

　　Method:  add complex abluent H-1070 to the expansion tank and the cleaning work should be kept for 24-36 hours. After the abluent interact with the scale on the tube and the rust, the soluble substance, the resultant, should be discharged.

　　技术要求：在清洗过程中主要检测两个指标：

　　Technical requirements: main detect two indexes:

　　1PH值、控制在6左右（本公司采用有机络合剂络合清洗）；

　　PH value should be around 6 ( organic complex abluent are used by our company);

　　②浑浊度、一般清洗时由于清洗剂的作用，水的浑浊度将增大，呈黄、黑色。

　　Turbidity: with the effect of the abluent, the turbidity of water will be higher, and the water will be yellow and black.

　　③腐蚀率检测，可采用直接挂片于管道系统中来检测（碳钢≤0.125mm/a、铜及铜合金≤0.005mm/a）。

　　Corrosion rate could be detected according to the degree of corrosion of the metal coupon which suspend in the pipe (carbon steel ≤0.125mm/a, copper/copper alloy ≤0.005mm/a).

　　作24小时循环清洗后可排放，排放时可泄空亦可循环排放，此时清洗工作结束。

　　The cycle cleaning work should be kept for 24 hours. The cleaning work is finished after the water is discharged.

　　(4)漂洗

　　Blanch

　　漂洗不用添加药剂，最好能把整个系统的循环水排放干净或采用边加水边排水的方法，来降低浓度，最后要求系统水PH值和补充水PH值相近，此时完成漂洗过程，为钝化预膜作准备。

　　No reagent should be added to the water while blanching. It would be better if the circulating water of the system could be fully discharged while blanching. Watering while discharging water is also a good way to reduce the concentration of water. It is required that the circulating water and the water added while blanching should have the similar PH value.

　　(5)钝化预膜

　　Passivation film

　　目的：管壁上形成分子膜，防止腐蚀。

　　Purpose: molecular film should form on the tube wall to prevent corrosion.

　　方法：在膨胀水箱投加H-1072、预膜强化剂H-1045一般在系统内循环36-48个小时即可。

　　Method: add H-1072, an agent used for passivation film, and H-1045 to the expansion tank and it should be circulated for 24-36 hours.

　　(6)日常水质处理

　　Water treatment

　　在完成管路的钝化预膜工程后，经检测确定系统水质达标，即进入正常的运行保养阶段，此时需一次性添加足够量的缓蚀阻垢剂H-8800，使用浓度为2000-3000 mg/L.

　　After finishing the passivation film of the tube, it could be in the routine maintenance stage if the water quality reach the requirement. Then enough corrosion and scale inhibitor H-8800 should be added and the concentration should be 2000-3000 mg/L.

　　进入稳定处理阶段时，应根据检测结果和补充水量确定缓蚀阻垢剂H-8800投加量。

　　While the water quality is stable, corrosion and scale inhibitor H-8800 should be added according to the detect result and the quantity of added water.

　　2、本公司提供技术服务可达到以下技术指标

　　Technical services provided by our company could reach the following standard:

　　（1）腐蚀率    碳      钢≤0.125mm/a

　　铜及铜合金≤0.005mm/a

　　Corrosion rate:  carbon steel ≤0.125mm/a,

　　copper/copper alloy ≤0.005mm/a

　　（2）水质控制指标

　　Water quality control indexes

　　3、水处理系列药剂型号

　　Water treatment series reagent:

　　H-1070络合清洗剂  H-1070 complex abluent

　　H-1056分散剥离剂  H-1056 dispersant

　　H-1072络合钝化预膜剂 H-1072 complex Passivation film reagent

　　H-1045预膜强化剂 H-1045 enhancer

　　H-8800密闭及冷冻系统缓蚀阻垢剂 H-8800 corrosion and scale inhibitor for sealed and chilled system

　　H-2011锅炉水缓蚀阻垢剂  H-2011 corrosion and scale inhibitor for boiler water