KHIA headerKnow-How in Action

VOL XXIX, NO 83

Belzona® Protects Power Plant Condensers

 
 

Industry:

Power (POWR)

 
 

Application:

Heat Exchangers (HEX)

 
 

Customer Location:

Power Plant, Bulgaria

 
 

Application Date:

March-June,2014

 
 

Application Situation:

Water boxes and tube sheets of two power plant condensers.

 
 

Problem:

Corrosion/erosion on the turbine condensers (heat exchangers) after years of operation. Originally un-lined, extensive bimetallic corrosion had occurred between brass tubes and carbon steel tube sheets.

 
 

Products:

Belzona® 1321 (Ceramic S-Metal)

Belzona® 1341 (Supermetalglide)

 

Substrate:

Carbon Steel

 
 

Application Method:

Application was carried out in accordance with Belzona Know-How Leaflet HEX-3. Belzona® 1321 was used to protect tube sheets from bimetallic corrosion and erosion from entrapped particles in the cooling water. Belzona® 1341 was used to protect the water boxes.

 
 

Belzona Facts:

Belzona application has been done separately for each condenser thus providing uninterrupted operation of the power plant. Coating of tube sheet surface with Belzona 1321 was completed in one day. Then the water boxes and covers were coated with Belzona® 1341 over two days. Complete application done within a week thus the equipment has been put in service with minimum delay. Belzona application provides power plant with long term erosion/corrosion protection of both condensers.

 
 

Photographs Description

1.  Surface preparation of tube sheet by blast cleaning  2.  Coating of tube sheet with Belzona® 1321 3. Application of first coat of Belzona® 1341 to water box 4. Completed application to tube sheet and water box  

 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com