The two drum boiler design is a well proven construction especially for industrial use as directly fired units or in waste heat application. The boiler body is a self carrying construction with exhaust gas tight membrane walls. The single heating surface sections and the combustion chamber can be reached easily via side openings for inspection purposes.

Your benefit:

• Stable water circulation in natural flow
• High pre manufacturing possible with pressure test in works
• Individual placement of superheater stages
• Designs with one or two passe

For small and medium pressure ranges the use of smoke tube boiler designs is very common. The special adaptation for individual requirements can include:

• Cooled or dry combustion chamber and optimised furnace conditions
• Combination with superheaters, economisers and additional heating surfaces possible
• Direct fired units but also in combined heat and power operation, such as waste heat recovery from gas turbines
• Big water content offering short term reaction on steam supply in case of pressure drop

Typical applications

• Downstream gas turbines 1 – 10 MWel
• Steam outputs 3 – 50 t/h
• Operating pressures up to 40 bar

The effective use of waste heat is one of our core competences. The most suitable boiler design (as water tube or smoke tube boiler) will be chosen and optimised, depending on the waste heat parameters, the exhaust gas composition and other boundary conditions, such as dust loading for example.

Heat recovery boilers are projected and delivered mainly for the following waste heat sources:

• Small and medium sized gas turbines
• Reciprocating engines, especially gas motors
• Thermal treatment plants
• Waste heat from different kind of processes

Hot water production is also possible for different waste heat applications or as additional heating surfaces downstream of steam generators.

Typical load ranges

• 30 to 120 MW Hot water heat load
• Temperature ranges 70 to 250 °C
• Pressures up to 40 bar