Anti corrosion paint for condenser

A technology of anti-corrosion coatings and condensers, applied in the field of fine chemicals, can solve problems such as difficult construction, high maintenance and repair costs, and pipe leakage, so as to prevent galvanic corrosion of tube sheets, prevent erosion of nozzles, The effect of preventing leakage from the expansion port

Inactive Publication Date: 2010-04-14
赵东楼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pipe leakage often occurs, so that the cooling water containing impurities enters the steam side of the condenser and mixes into the clean condensed water. On the one hand, the vacuum degree of the condenser will continue to change, and on the other hand, it will Fouling, worsening heat transfer, reducing power generation efficiency of the system
The usual way to solve this problem is to replace the condenser tube, which is difficult to construct, has a long construction period, and the cost of maintenance and repair is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Weigh 10kg of curing agent by weight and add it to 84.5kg of novolac epoxy resin and stir thoroughly, then add 5kg of ultra-fine ceramic powder, continue stirring, and finally add 0.5kg of dibutyl phthalate, stir well and then stand still It can be used after curing for 20-30 minutes.

[0010] The main technical indicators of the coating obtained in this way are: 1. The adhesion to brass, nickel-copper pipe, carbon steel, stainless steel and copper is grade 1; 2. Water resistance (100°C) > 80 days; 3. Flexibility: 1 Grade; 4. Acid resistance (room temperature, 5% HCI) > 12 days; 5. High strength, erosion resistance; 6. Good sealing performance.

[0011] Specific application process:

[0012] 1. Clean the inside of the condenser to ensure that each copper tube and tube sheet is clean.

[0013] 2. Use compressed air to dry each tube and tube sheet of the condenser.

[0014] 3. Use 0.1-0.6MPa compressed air and steel grit to sandblast and derust the tube plate. Before s...

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PUM

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Abstract

The present invention discloses an anticorrosive coating for steam condenser. Its raw material composition includes (by wt%) 80-88% of phenol formaldehyde epoxy resin, 1-2% of dibutyl (0-)phthalate, 8-13% of solidifying agent and 3-8% of superfine ceramic powder.

Description

Technical field [0001] The present invention relates to a fine chemical, more specifically to a paint. Background technique [0002] Condenser is one of the important equipment of thermal power plant. It is a huge box with up to tens of thousands of tubes. Due to the industrial pollution of water quality and the shortage of water resources, the increase of the concentration ratio of circulating water, the corrosion of condenser tube plates, the erosion corrosion of nozzles and the penetration and leakage of expansion ports are practical problems in every condenser. Pipe leakage often occurs, so that the cooling water containing impurities enters the steam side of the condenser and mixes into the clean condensed water. On the one hand, the vacuum degree of the condenser will continue to change, and on the other hand, it will Fouling, worsening heat transfer, reduces the power generation efficiency of the system. The usual way to solve this problem is to replace the condense...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04C09D5/08
Inventor 赵东楼
Owner 赵东楼
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