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Topics Covered
Background
The Power Industry
Boilers
Ash Hopper Refractories
Background
ANH Refractories Europe is a member of the ANH Refractories family of companies headquartered in Pittsburgh, USA.
ANH Refractories Europe is the primary contact for the European and Middle Eastern markets.
The Power Industry
Refractory technology for the power industry has changed with the evolution of new demands for power and economic and environmental concerns. A wide variety of materials are available for use in industrial boilers, package boilers, cyclone boilers, waste-to-energy units, CFB's, ash hoppers and others.
Boilers
A boiler is a device used to burn fuel such as coal to superheat water to create steam. Shown below is a basic schematic of a boiler and its various parts.
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Schematic of a boiler.
Ash Hopper Refractories
Ash hopper service includes a number of conditions, which can be detrimental to a refractory lining. Refractories used in this service must show good resistance to a variety of destructive conditions.
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- Airborne particulate generated during combustion can cause severely abrasive conditions.
- Slag can fall into the hopper in large chunks called "clinker". The impact of this clinker upon the refractory can be quite severe.
- In the case of wet-bottom ash hoppers, the splash generated by falling clinker can introduce severe thermal shock.
- Products installed in ash hoppers can be cast, gunned or sprayed.
| Refractory |
Notes |
| Tufshot LI |
Service Classification - Less Severe
Installation Method - Gun
Impact Resistance - Good
Thermal Shock Resistance - Fair
Abrasion Resistance - Fair |
| Tufshot LI |
Service Classification - Less severe
Installation Method - Cast
Impact Resistance - Good
Thermal Shock Resistance - Fair
Abrasion Resistance - Fair |
| Lo-Abrade G |
Service Classification - Severe
Installation Method - Gun
Impact Resistance - Excellent
Thermal Shock Resistance - Good
Abrasion Resistance - Good |
| Versaflow 45 Plus |
Service Classification - Severe
Installation Method - Cast
Impact Resistance - Excellent
Thermal Shock Resistance - Fair
Abrasion Resistance - Good |
| Versaflow Thermax Plus |
Service Classification - Most Severe
Installation Method - Cast
Impact Resistance - Excellent
Thermal Shock Resistance - Excellent
Abrasion Resistance - Excellent |
| Versagun Thermax Adtech |
Service Classification - Most Severe
Installation Method - Gun
Impact Resistance - Excellent
Thermal Shock Resistance - Excellent
Abrasion Resistance - Good |
| Greentec 170 LG |
Service Classification - Most Severe
Installation Method - L.C Gun
Impact Resistance - Excellent
Thermal Shock Resistance - Good
Abrasion Resistance - Excellent |
Source: ANH Refractories Europe
For more information on this source please visit ANH Refractories Europe.