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Heat Exchanger Tube Sheet Corrosion Protection

Tubular heat exchanger is one of the key equipments in industrial production. According to the statistics based from emergency failure repairs, approximately 60% breakdowns are resulted from condenser pipes corrosion, which seriously affects the safe, stable and full load operation. In addition, it will be prone to have scale problem when cooling water has heat transfer with higher temp mediums, causing the rusty deposit layer to increase thermal impedance, and severely decrease heat transfer efficiency. Due to differences of condenser’s construction, material, working condition and cooling water quality, tube bundles and tube sheets will suffer from corrosive leakage problem, which will result in condensation water pollution, water supply quality deterioration, more serious scaling and corrosion, even production accidents.

Case 1 Corrosion Protection

Chemical industrial park methylamine plant’ condenser tube sheet had circulating water material corrosion problem, resulting in tube sheet corrosion leakage. The company adopted surfacing welding, which would be prone to second leakage due to thermal stress produced by welding. After technical communication, the company cooperated with 1st Line for tube sheet corrosion and leakage resistance protection.

 

Case 2 Repair and Protection

In 2012, one crytallization plant found tube sheet corrosion & leakage and serious duplex metal corrosion in ice maker maintenance due to the weal acidity of circulating water. The company adopted 1st Line product to repair condenser tube sheet corrosion, which is effective so far. Timely and effective maintenance and protection can reduce loss and save cost and investment for our customer. The company is satisfied with the repair result and acknowledges the importance and necessity of precaution in equipment management.

 

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