We globally perform dry-outs at various types of facilities for our customers in the energy sector. We have a profound knowledge about the specifics of the different facilities to ensure a safe and low-risk dry-out.

 

 

Circulating fluidized bed plant(CFB)

The dry-out of a circulating fluidized bed plant requires taking the plant’s specific components into consideration like the burning chamber, immersion pot, fluidized bed cooler, outlet duct and backpass. In general, you mostly will find a normal brick lining and a piped wall with these type of plants. In addition, draft conditions will occur in case of an unsteady dry-out.

A dry-out of these type of plants is absolutely necessary, given that a direct start of the plant's burners would result in immediate and uncontrolled temperatures of >200°C. This rapid increase in temperature would be very extremely risky and could especially ruin the area of the burning chamber. Local overheating in this part of the plant makes consistent ventilation and temperature ratios in downstreamed parts impossible.

Our burning units enable a controlled heat-up and dry-out. Permanent monitoring and controlling secure the controlled process.

 

 

Coal-fired and ignite-fired power plant 

A special feature with coal-fired and ignite-fired power plants is the stress relief heat treatment of the piped walls inside the ignite-/coal-fired boiler. Given that these are made of different types of steel, they show tensions after the welding, especially in the areas surrounding the welds. A heat-up is mandatory, because a direct start of the plant's burners would result in immediate and uncontrolled temperatures of >200°C. This would result in an unbalanced temperature profile within the boiler. However, the present welds in this area need to be charged with heat in a slow and controlled way to remove existing tensions. This heat treatm0ent is made possible by our external burner system and ensured through permanent monitoring and controlling.

 

 

Waste incineration plant/biomass plant

Drying these types of plants, it is important to introduce, differing from common operations, zero pressure or rather a slight overpressure. This is necessary to guarantee a homogeneous heat distribution and provide a more efficient dry-out. We arrange the exact procedure with our customers individually for every plant on-site. A dry-out is mandatory, because a direct start of the plant's burners would result in immediate and uncontrolled temperatures of >200°C. This rapid increase is extremely risky and could damage several areas within the plant.

 

 

Drying of smaller areas with heating mats

A dry-out with heating mats is perfectly suited for smaller areas. This way it is possible to avoid an extensive heating of the whole plant and only treat the effected areas after a partial repair. Furthermore, it is also possible to dry single components before installationin a complete system with this method. This kind of electrical dry-out can reach a maximum temperature of approximately 450°C.