HOT BLAST VALVES
HOT BLAST VALVES
The VCL Hot Blast Valve is used to seal high temperature gas safely. It is mainly installed in the iron and steel industry, to seal the hot air coming from the hot stove unit to the blast furnace. A maximum thermal insulation between Hot Blast and the outside of the valve is achieved by a combination of a patented insulation material and refractory lining. This system saves a lot of energy due to reduced water cooling and at the same time enlarges the valve life time due to reduced heat loads and stresses. Seat and valve plate are cooled by water. The inner cooling water channels are engineered and optimized over the years of VCL’s experience to be as efficient as possible.
Individual cost saving calculation can be done upon request
* savings depending on size of BF, coke price and CO2 emission cost.
DESIGN FEATURES OF
HOT BLAST VALVES
- Increased process heat retention with improved thermal insulation system (thermo blocker) in body and bonnet
- Special design of cooling system to provide optimum flow reduces water heat loading & process heat loss
- Possible sealing in both directions, floating plate design
- Valve actuation in accordance with customer‘s requirements (man./electr./hydr./pneum.)
- Pressure rating up to 6.0 bar
- Service temperatures up to 1550 °C
- Nominal sizes up to DN 2200
- Other sizes or operating conditions on request
DESIGN
ADVANTAGES
- Optimized cooling system reduces water requirements
- Improved thermal insulation system reduces thermal stress and extends the total life cycle
- Exchangeable body seats makes maintenance easier & faster
- Decreased heat losses reduce operating/fuel costs & carbon footprint
Exchangeable body seats
- Replaceable seamless forged cooling water rings ordered in advance will reduce the refurbishment risk, duration & cost
- Refurbishment time can be reduced to a minimum
