Vølund air-cooled combustion grate
- the traditional longitudinal stepped grate
Minimum emission of harmful substances and maximum energy recovery
The traditional Babcock & Wilcox Vølund air-cooled combustion grate is a thoroughly proven design, highly suitable for continuous high-efficiency combustion of mixed household and bulk industrial waste with minimal emission of harmful substances and maximum energy recovery.
High availability and operational reliability
The step grate is of a rigid design, specially developed for heavy-duty and high-temperature operation with a high availability and operational reliability so that minimal shutdown is assured for routine maintenance and cleaning.
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Grate design
A perfect air distribution and minimal power consumption
The grate movement is like a "walking floor" and is unique in its simplicity and low mechanical wear. The combustion air is blown in and up through many small gaps, ensuring perfect air distribution. This results in combustion of the waste with minimal power consumption for air injection and grate movement. Inspection and maintenance during the planned yearly stoppages are also very simple because all servicing of grate bars, grate blocks, grate girders and rollers takes place in the furnace above the grate with hand tools only, and there is no need to work below the grate.
More grate details
The grate is divided into feeding section with pusher, combustion grate and burn-out grate. Our grate has four sections, two of which form the combustion grate at an angle of 15º while two sections form the burn-out grate at an angle of 7.5º. A one metre-high vertical grate transition between the combustion grate and the burn-out grate ensures that waste lumps are broken up and burned.
The grate sections are integrated into a unit, and all sections are operated and controlled individually. This means that each section has its own grate drive and control system for combustion air.
High reliability with minimal downtime
The individual components used in the grate design are specially developed for highly variable loads and high temperatures. The result is high reliability with minimal downtime.
