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POWER AND INCINERATION INDUSTRY
Power
Refractory technology for this 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.
Boiler Refractory Applications
Power Generation
Ash Hopper Refractories
Incineration
Boiler Refractory Applications
Boiler Refractory Application Guide
| Furnace Walls |
Inside Casing & Tangent Wall Outsitde Casting |
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| Tangent Wall Inside Casting |
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| Opening Patch and Access Doors |
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| Burners |
Tangential and Front Fired |
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| Special Applications |
Slagging Bottom Boiler |
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Cyclone Boiler Studded Tubes
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| Baffles and Boiler Seals |
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| Floors (Industrial Boilers) |
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| Stoker Pier (Industrial Boilers) |
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| Hearth (Recovery Boilers) |
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Power Generation
The correct selection of refractory for CFB''s can prolong service life and improve overall operational efficiancy. ANH has been a preferred refractory supplier to the Power Industry for over 50 years.
H-W product families offer a complete package of solutions for all service conditions:
- EXCELERATE: abrasion resistant ramming / gunning material
- GREENGUN: gunable plastic
- KAST-O-LITE: insulating castables
- NARCOGUN: silicon carbide gun mix
- PLASTECH: abrasion resistant phos bonded
- THERMAX: Thermal shock resistant vitreous silica castable
- VERSAGUN: low cement gunmixes
- VERSAFLOW: low cement castables
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| Fuel Feed Systems |
Service Conditions:
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| Lining Solution:
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| Combustor |
Service Conditions:
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Lining Solution:
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| Crossover duct |
Service Conditions:
- Abrasion
- Ash Penetration
- Thermal Cycling
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Lining Solution:
- Greengun 85 Plus
- Versagun ABR
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| Cyclones |
Service Conditions:
- Abrasion
- Fule Reactions
- High Temperature
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Lining Solution:
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| Ash Return Systems |
Service Conditions:
- Abrasion
- Thermal Cycling
- Ash Penetration
- Expansion Cracks (Volume Stability)
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Lining Soulution:
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| Outlet Ducts / Eternal Heat Exchangers Ash Coolers |
Service conditions:
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Lining Solution:
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Ash Hopper Refractories
| Ash-Hopper Service
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.
- 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 clincker 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.
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| Tufshot LI |
Service Classification - Less Severe |
Installation Method - Gun
Impact Resistance - Good
Thermal Shock Resistance - Fair
Abrasion Resistance - Fair |
| Tufcast 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 |
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Incineration
Incineration of corrosive waste has become an increasingly acceptable method of disposal for these materials. Commercially and privately operated incinerators will be a part of the foreseeable future. Conditions relative to refractory longevity vary throughout these units. Careful selection of refractory materials is required to achieve long running campaigns and maximise cost effectivness. Thermal profiles, waste streams, generated slag and operating practices are individual for each incinerator in operation. Therefore refractory practice is an individual matter.
Incinerators are used to destroy -
- Liquids / Sludge / Solids / Gases
Incinerator Conditions -
- Temperature - 900 to 1450°C
- Abrasion - solids, metals, gas streams
- Chemical - sulphur, chlorine, organics
- Slags - ashes, metals, phosphates, chemical
- Gases - organics, chemicals
- Mechanical - metal drums, slags
Types of waste -
- Medical - hospitals, pharmaceuticals
- Industrial - tiers, inks, packing
- Cremation - local authorities, veterinary
- Sewerage - water companies
- Municipal - town refuse
- Agriculture - animals, soils
- Government - money, military, drugs, documents
- Chemical - dangerous toxic wastes, petrochemicals
- Power Gen - heat recovery systems
- Marine - shipboard wastes
Types of Incinerators -
- Municipal - moving-rotary grate, CHP
- Fluid bed - circulating, bubbling
- Rotary - chemicals, solids, liquids
- Multi Hearth - sewerage
- Modular - medical, solids
- Cremators
- Waste Boiler - paper, oils, sugar cane
- Waste Gas - flare stacks
- Thermal Oxidisers
- Coal/Oil Gasifiers
- Spent Caustic Incinerators
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