Traveling Exhaust Systems
When a major in-plant emission source is closely related to operations carried out by overhead cranes (e.g. furnace charging and tapping, or pouring from ladles), effective pollution control may be obtained through the use of a Traveling exhaust system.
The Traveling exhaust system captures emissions from traveling sources while moving along a track. In many cases, the only alternative is to ventilate the entire building. The close capture approach requires less exhaust volume to achieve the same results. This saves several ways such as less installation capital cost and less energy costs.
The system configuration is selected to suit the requirements of each application. Gas, temperature, corrosion characteristics, radiant heat from plant processes, and the speed of hood travel are some of the parameters that figure in the system configuration. Available clearances, relative positions of the hood and duct, and whether collection is to be continuous or only at intermittent stations determine the configuration. We can supply various hood designs - from the simplest capture hood to a very complicated enclosure with a flexible skirt extending below.
Traveling exhaust systems have high flexibility and versatility in applications dealing with high heat, sparks, noxious gases, designated particles, nuisance dusts and vapors.
- Overhead Crane Exhaust
- Tripper conveyors. traveling hoppers, scale cars
- Teeming leaded steel
- Coke oven quench car
- Open furnace hoods
How it works
The system is installed along the crane runway or monorail track. Monorail systems may have bends and switches. The exhaust trolley, to which the hood is connected, channels gases from the hood into the exhaust duct. The exhaust trolley is carried on rails, which are an integral part of the ductwork. The exhaust trolley is pushed/pulled by the overhead crane or monorail trolley. As the crane travels along its runway/monorail, the exhaust trolley opens the flexible seal and provides suction to the traveling capture hood allowing the gases to be exhausted to the dust collector. The flexible connection between the hood and the exhaust trolley allows the hood-supporting device a large amount of latitude in movement, without distorting the seals on the exhaust duct. A vacuum in the system is maintained by close fitting seals with transfer losses being kept to a minimum due to the design of the system.
What it does
A Traveling exhaust system allows the fume collection hood to follow any source of emission automatically. This unique design combined with the close capture hood provides total emission control at a traveling source. This improves the work environment because high volumes of contaminants do not spread into the workplace. Exhaust air volumes are reduced dramatically.
A Traveling exhaust system will save you money on air handling equipment, dust collectors and duct sizing. Operating costs for energy, make-up air and waste heat are all reduced substantially.
We are committed to providing the service you need to ensure a successful and reliable project. Our engineers are always available to advise you of the system best suited to your needs. Feel free to call if you think we may assist you with your problems in this area.