热搜词:冷凝器  冷凝器厂家  列管式冷凝器  不锈钢冷凝器  半盘管反应釜  搪瓷设备  储罐  

当前位置:
首页 > 技术知识

蒸发式冷凝器化学清洗的工艺过程

人气:162 评论:0 日期:2018-05-28 09:46:40

1、清洗前的准备

(1)切断电源:管壁循环泵,停止冷却水循环;关闭轴流风机电源。

(2)关闭阀门:关闭进水阀门、排污阀门。

(3)人员防护:施工人员穿戴防护服及防护面具,穿戴塑胶鞋和手套。清洗施工中应注意人身安全,做好劳动保护。

2、化学清洗工艺及实施

由于蒸发式冷凝器的结构很特殊,填料、冷凝盘管呈悬空状态,完全暴露在空气中,无法进行浸泡式化学清洗;并且各组件结构状况也不相同,所以采用喷淋清洗、水清洗和循环清洗相结合的清洗方式。

(1)循环水箱清洁

首先清扫循环水箱底部脱落下来的水垢残渣及杂物,把垢渣和杂物放入编织袋中,并搬离循环水箱。用自来水冲洗水箱,打开排污阀门,排出垢渣及脏水。清洗干净后,关闭排污阀门。

(2)循环水箱的保护

由于循环水箱采用镀锌钢板制作,清洗药剂对锌有一定的腐蚀性,所以清洗前,用大而结实的塑料布铺盖水箱底部及边缘,保护水箱免受腐蚀。在循环水箱下边缘的下水口处,塑料布上应留出孔洞,以方便冷却水循环系统运行时管路畅通。

(3)喷淋装置疏通

拆下喷淋装置上的布水管及喷嘴,清理出其中的垢渣,然后复原,保证水路畅通无阻。

(4)喷淋清洗

①上喷淋。打开进水阀门,向冷却水系统补充所需水量;然后把塑料管、清洗水槽与耐酸循环泵相连,进水口放于装有专用清洗剂的清洗水槽内,出水口固定在蒸发式冷凝器塔顶;开启清洗循环泵,由施工人员掌控出水口塑料管,把清洗剂从冷凝器塔顶向填料上均匀喷淋。清洗剂可以自上而下浇淋在填料和冷凝盘管上。

②下喷淋。采用同样方法,把一台自备的小型耐酸循环泵与清洗水槽、进出水管相连,在水管出口安装一个自制的喷头;开启循环泵,从冷凝器进风口位置,向冷凝盘喷淋清洗剂。自制的喷头可使清洗剂形成一定的冲击力,直接作用在盘管上,加速锈垢的溶解和脱落。

1. Preparation before cleaning

(1) cut off the power supply: pipe wall circulating pump, stop cooling water circulation, and close the power supply of axial fan.

(2) close the valve: close the inlet valve and drain valve.

(3) personnel protection: construction personnel wear protective clothing and protective masks, wear plastic shoes and gloves. Attention should be paid to personal safety and labour protection in cleaning construction.

2. Chemical cleaning process and Implementation

Because the structure of the evaporative condenser is very special, the packing and condensing coil are in the air and are completely exposed in the air and can not be soaked in chemical cleaning. And the structure of each component is not the same, so the cleaning method combined with spray cleaning, water cleaning and circulating cleaning is used.

(1) cleaning of circulating water tank

First, remove the scale and debris from the bottom of the circulating water tank, put the dirt and debris into the woven bag, and move away from the circulating water tank. Rinse the water tank with tap water, open the drain valve, and remove fouling and dirty water. After cleaning, shut down the discharge valve.

(2) protection of circulating water tank

Because the circulating water tank is made of galvanized steel plate, the cleaning agent has a certain corrosion to zinc, so before cleaning, the tank is covered with large and strong plastic cloth to cover the bottom and edge of the water tank to protect the water tank from corrosion. At the outlet of the lower edge of the circulating water tank, holes should be left on the plastic cloth to facilitate the smooth operation of the cooling water circulation system.

(3) dredging the spray device

Remove the water pipes and nozzles on the sprinkler device, remove the scale residue, and then restore to ensure that the waterways are unimpeded.

(4) spray cleaning

(1) sprinkler. Open the inlet valve and replenish the water requirement to the cooling water system; then connect the plastic pipe, the cleaning tank and the acid resistant circulating pump, and put the intake in the cleaning tank with the special cleaning agent. The outlet is fixed on the top of the evaporative condenser tower; the cleaning circulation pump is opened and the construction personnel control the plastic pipe of the outlet of the water. The agent is sprinkled evenly from the top of the condenser to the packing. The cleaning agent can be poured from top to bottom on the packing and condensing coil.

Second, spray. In the same way, a self-contained small acid acid circulating pump is connected with the cleaning tank and the inlet pipe, and a self-made nozzle is installed at the outlet of the water pipe; the circulation pump is opened, the air inlet of the condenser is located and the cleaning agent is sprayed to the condensing disc. The homemade sprinkler can make the cleaning agent form a certain impact force, directly acting on the coil and accelerating the dissolution and falling off of rust scale.

辛苦整理!转载请注明来自 http://www.zqshzb.com/n1b/1902.html

相关文章

技术知识

联系中骐石化

0510-85390527