Circulating Fluidized Bed & Pulverized Coal
Boiler Coating
Type:
- PC
- CFB
Characteristics Our Coating
- Resistant to 2.000 F (1,093 C)
- Resistant to Severe Cyclic Conditions
- Corrosion/Erosion Resistant
- Thermally Conductive, Promotes Heat Transfer
- Reduces Slagging
- Resist Gases, Oils, Solvents and Most Acids
- Non-Toxic and Odorless
- Adheres to Carbon Steel, Stainless Steel Refactory and Organic Surfaces
- Good Mechanical Bonding
Uses:
- Boiler Water Wall Tubes
- Superheater and Reheater Tubes
- Nose Arch and Slope Tubes
- Stacks
- High Heat Ducts and Piping
- Cold Side Corrosion Under Insulation
Scrapper Chain
- Power Plants
- Refineries
- Chemical Facilities
- Cement Plants
- Pulp and Paper
- Steel Processing
- Waste to Energy Plants
Circulating Fluidized Bed & Pulverized Coal
Boiler Coating
Scope Of Work
Thickness Inspection Of Wall Tube Boiler to Map The Wall Tube Thickness Condition
Repair Recommendation
1. Refer to wall tube thickness condition like Re-tubing or Thermal Spray Coating
repair by Thermal Spray Coating
1. Clean with degreasser
2. Aluminium Oxide Blasting (SA 2.5 Profile 75 - 115 micron)
3. HVAS
4. Ceramic Coating using
5. Final Inspection and Report
Methods for Preventing Damage to Boiler Wall Tubes.
overlay Welding (Cladding)
By welding, a coating with good bond strenght and thickness is produced. The disadvantages of this method: the occurrence of distortion in the pipe as a side effect of welding, limited welding material, cladding thickness affects boiler efficiency, long processing time.
Jacketing
By welding a more abrasion-resistant material to the wall tube surface. The disadvantages of this method: distortion of the pipe as a side effect of welding and if only a spot weld is done, the area that is not welded will become a gap for turbulence, affecting the heat transmission process, high cost and long processing time.
Thermal Spray Coating
By coating the wall tube surface with a material that is more resistant to abrasion/corrosion.
Advantages of this method: Fast workmanship, the material used is not tied to the base metal material, the cost required is not too high.