KHIA headerKnow-How in Action

VOL XXXI, NO 67

Heat Exchanger Reliably Refurbished With Belzona

 
 

Industry:

Petrochemical (PETR)

 
 

Application:

Heat Exchangers (HEX)

 
 

Customer Location:

Petrochemical Plant, Teesside, UK

 
 

Application Date:

2009

 
 

Application Situation:

Straight Tube Heat Exchanger

 
 

Problem:

This Propylene heat exchanger operates at up to 120°C and the tube face had suffered severe galvanic and pitting corrosion. The separator channels and tube face had to be completely rebuilt to prevent bypass of the separator plate. In addition, the client required a lining to prevent further attack to the water boxes, nozzles and the tube faces.

 
 

Products:

Belzona 1511 (Super HT Metal)

Belzona 1391 (Ceramic HT)

 

Substrate:

Carbon Steel

 
 

Application Method:

Application was carried out in accordance with Belzona Know-How System Leaflet HEX-1, HEX-2 and HEX-3.

 
 

Belzona Facts:

Belzona 1511 high temperature resistant paste grade was used to resurface the tube sheet and rebuild the separator channels. All parts of the heat exchanger were then protected with a simple brush application of Belzona 1391 which is capable of withstanding immersion conditions of 120°C. Prior to this work the client was considering a complete replacement of the asset, which would have been at least 12 times the refurbishment costs at that time. The application was in excellent condition when inspected in 2012.

 
 

Photographs Description

  1. Heat exchanger arriving in workshop
  2. Pitting damage clearly visible after grit blasting
  3. Tube face being rebuilt
  4. Belzona application completed
 
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