BELZONA ON EVAPORATOR TUBE SHEETS
行业: Pulp & Paper (PLPR)
施工应用: HEX-Heat Exchangers (HEX)
基材: Stainless steel tubes and mild steel tube face.
客户所在地: Pulp & Paper Mill - British Columbia, Canada
施工日期: 1994
问题: Erosion / corrosion of the tube sheet due to hot caustic black liquor at approximately 185ºF and galvanic corrosion between the stainless steel tubes and mild steel tube face.
照片说明
- View of tube sheet showing erosion.
- Application of Belzona® 1391 via injection pistol to top tube sheet. Product was brushed into place around tubes and allowed to flow level.
- Tube sheet inspection of Belzona® 1391 after 2 years in service.
工况条件
Evaporator tube sheet.
施工方法
Application was carried out in accordance with a modified version of Belzona Know-How Leaflet HEX-1.
贝尔佐纳使用效果
Belzona has been providing protection for evaporator tube sheets at this mill since April 1992. All three applications are still in service. The first application utilized Belzona® 1321, and while the coating has now since eroded away the Belzona product is still adhering in the "grooves" around the tubes, reducing erosion in this area dramatically. The application is scheduled to be refurbished. The other two applications are just short of 3 & 4 years old respectively. A fourth application (new) is planned.
