Dust Catcher Dome Valve
The Clyde Dust Catcher Dome Valve is a heavy-duty bulk solids isolation valve designed specifically for the demanding conditions found in blast furnace gas cleaning systems.
View Process VideosHigh-Integrity Isolation for Blast Furnace Dust Handling
The Clyde Dust Catcher Dome Valve is a heavy-duty bulk solids isolation valve designed specifically for the demanding conditions found in blast furnace gas cleaning systems.
During the ironmaking process, iron oxide dust is continuously generated and collected within the blast furnace dust catcher. This material must be discharged safely and reliably to maintain furnace availability and ensure stable operation of the gas cleaning system.
The Dust Catcher Dome Valve provides secure shut-off and controlled discharge of abrasive furnace dust, while maintaining the pressure integrity of the furnace gas system.
Developed from the proven Clyde Dome Valve platform, the Dust Catcher Dome Valve combines robust mechanical design with inflatable seal technology, ensuring reliable performance even in extremely abrasive and high-temperature environments.
Designed for Blast Furnace Reliability
Blast furnace dust handling systems require equipment capable of operating under high pressure, elevated temperature and severe abrasion.
The Dust Catcher Dome Valve is engineered to:
- Safely isolate pressurised dust catcher vessels
- Discharge iron oxide dust and furnace particulate
- Maintain gas-tight sealing under pressure
- Operate reliably in extreme temperature environments
- Withstand highly abrasive dust streams
This ensures continuous furnace operation without compromising plant safety or process availability.
Key Features
Inflatable Seal Technology
The valve incorporates a pressure-tight inflatable sealing system which inflates during closure and deflates when opening, protecting the sealing element from abrasive dust.
Full Bore Flow
The full-bore valve design provides unobstructed material discharge, reducing the risk of dust accumulation within the valve body.
Fast Pneumatic Actuation
Heavy-duty pneumatic cylinder and vane actuators provide fast and reliable valve operation.
Abrasion-Resistant Internal Protection
To withstand the severe abrasion caused by iron oxide dust, the Dust Catcher Dome Valve is typically supplied with:
- Ceramic tiling on vulnerable internal surfaces exposed to high dust impact
- Tungsten carbide coating on the inlet sections, where the material stream first enters the valve
These protective features significantly reduce wear, extend service life and maintain valve performance in extreme blast furnace conditions.
High-Pressure Sealing
The valve provides effective sealing at pressures up to 30 barg, ensuring safe isolation of pressurised furnace systems.
Performance & Reliability
The Dust Catcher Dome Valve is designed for long service life in continuous heavy industrial duty.
Typical performance characteristics include:
- Over 1,000,000 operating cycles between major overhauls
- Seal replacement intervals up to 200,000 cycles
- Reliable operation across a wide range of harsh process environments
- Ability to cut through moving or static columns of bulk material
These characteristics ensure high plant availability with minimal maintenance requirements.
Typical Materials Handled:
- Iron oxide dust
- Blast furnace flue dust
- Metallurgical furnace particulate
- Abrasive oxide powders
Typical Applications:
The Dust Catcher Dome Valve is typically installed beneath the blast furnace dust catcher vessel, where it performs two essential functions:
- Isolating the dust catcher from the blast furnace gas system
- Allowing controlled discharge of accumulated dust
This ensures safe dust removal while maintaining pressure integrity in the furnace process.
Typical Valve Specification:
- Valve Size: DN200 – DN500
- Temperature Range: −20°C to 450°C
- Pressure Capability: Up to 30 barg
- Actuation: Pneumatic or Hydraulic
- Seal Type: Inflatable Seal
- Flow Design: Full Bore
Dust Catcher Dome Valve vs Gritzko Valve
Enquire| Feature | Clyde Dust Catcher Dome Valve | Gritzko Valve (Paul Wurth) |
|---|---|---|
| Valve Concept | Inflatable seal dome valve | Mechanical sealing disc valve |
| Sealing Method | Inflatable seal activated after closure | Metal-to-metal mechanical sealing |
| Ability to Close Through Material | Can close through moving or static columns of dust | Typically requires minimal material in sealing zone |
| Flow Path | Full bore unobstructed flow | Internal disc mechanism partially obstructs flow |
| Resistance to Abrasion | Protected seal + ceramic/tungsten wear protection | Sealing surfaces exposed to wear |
| Maintenance | Simple seal replacement | Mechanical refurbishment required |
| Cycle Life | >1,000,000 cycles typical | Good reliability but higher wear risk |
| Capital Cost (CAPEX) | Significantly lower equipment cost | High capital cost due to complex design |
| Operating Cost (OPEX) | Lower maintenance and servicing cost | Higher maintenance and refurbishment cost |
| Total Cost of Ownership | Low lifecycle cost | Higher lifecycle cost |
Why Steel Plants Are Choosing Dome Valve Technology
EnquireFor many years, mechanical disc valves, such as the Gritzko valve, were widely used in blast furnace dust catcher discharge systems.
Increasingly, operators are turning to Dome Valve technology due to its lower capital cost, simpler maintenance and reliable performance in abrasive dust service.
Lower Capital Investment
The Dome Valve features a simpler, more compact design, resulting in a significantly lower initial equipment cost.
Reduced Maintenance Requirements
The inflatable seal protects the sealing surfaces from abrasive dust, allowing quick seal replacement rather than expensive mechanical refurbishment.
Improved Reliability
The valve can close through moving or static columns of dust, helping avoid operational problems caused by material trapped in the valve.
Lower Lifecycle Cost
With lower capital costs, reduced maintenance requirements, and a long operational life, the Dust Catcher Dome Valve provides a much lower total cost of ownership over the lifetime of the plant.
