Steam boilers can be used very flexibly. Steam can be used to heat various processes and the steam can be converted into electrical energy in turbines. Almost all possible scenarios can be combined.

We combine the boiler systems with our various flexible Kablitz firing systems and thus offer our customers an optimum system from a single source.

We are happy to supply the complete technology for a combined heat and power plant: from the fuel bunker to the chimney, including power generation and heat supply – precisely tailored to your needs.

We supply different boiler types for every application:

  • Classic vertical water tube boilers for biomass for up to approx. 120 MW, with pressures up to approx. 100 bar and 520°C

  • We use horizontal water tube boilers, also called tailend boilers, for the combustion of waste wood and RDF/SRF

  • Flue tube boiler with a cooling screen made of water tubes (combi boiler) for pressures up to approx. 40 bar and 40 t/h steam output


Goch (Germany) Biomass thermal power station with vertical pass boiler To generate electricity and process steam economically, a large German energy supplier was planning a biomass power station with process steam extraction for a potato processing plant. The main focus for the concept develop- ment of this CHP plant was to offer the highest possible flexibility due to the fluctuating heat demand.

In terms of flexibility, it was also of great importance to achieve a high fuel flexibility in order to be prepared for any eventuality. For this reason, a steam-air preheater was installed which enables fast and precise temperature control and, together with the economiser, also ensures a good plant efficiency. Due to the flexibility of the furnace and the turbine as well as the design measures to reduce the corrosion risk, the plant works economically and reliably in all operating con- ditions.

The optimal concept of combined heat and power generation has proven itself in practice: During the week, the power plant supplies the adjacent potato refining plant with inexpensive process steam, so that approx. 5.0 MW of electrical energy can be generated, whereas at the week- ends an increased electrical output of approx. 7.2 MW can be produced without any heat dissipation.
Wiesbaden (Germany) Biomass thermal power station with horizontal pass boiler A German energy supply company operates a combined heat and power (CHP) plant in Wiesbaden so that it can both generate electricity and supply the customer‘s own district heating network with thermal energy. The plant is operated mainly electricity driven in the summer (i.e. with a focus on generating as much electricity as possible) and heat driven in the winter, with focus on the district heating network.

It was important for the customer to generate electricity and heat with optimum efficiencies and not only to comply with the required emission values, but even to significantly undercut them. In order to meet these emission requirements, a multi- stage selective non-catalytic reduction plant (SNCR) with acoustic temperature measurement, a sophisticated flue gas cleaning system with evaporative cooler and a dry sorption with additive addition of lime hydrate and activa- ted lignite HOK are used.

Due to the difficult and polluted fuel, the horizontal steam boiler was designed in such a way that corrosion and erosion risks are minimal by also enabling an easy and fast replacement of the heating surfaces if necessary.
Czarna Woda
Czarna Woda (Poland) Biomass thermal power station with saturated
steam generator
A German insulation material producer wanted to live up to its green image at its location in Poland and convert its energy supply from fossil fuels to renewable energies.

The natural circulation steam generator implemented by Kablitz was designed as a combination of water tube and smoke tube evaporator. In this case, a second drum was added to the smoke tube. This upper drum is required due to the steam pressure and the high boiler output (for smoke tube boilers) in order to ensure a sufficiently large volume. In addition, an economiser was installed downstream to increase the efficiency. In addition, the plant has a fly ash recirculation system to improve burnout and make optimum use of the fuel.

In order to ensure the longest possible availability, special sootblower systems were used to clean the superheater, flue tube and economiser heating surfaces, enabling the boiler plant to be cleaned fully automatically during operation. By switching to renewable energy sources and using pro- duction waste, the company not only saves money in the long term, but also contributes to a clean environment.
Permuco (Chile) Biomass-combined heat and power plant with
vertical boiler
A major German sugar manufacturer intended to build a power plant for its Chilean plant to supply its own energy. To do this, it needs process steam for its production and electricity to operate the plant on its own and to be inde- pendent of the local power grid.

In addition, the task was to co-fire up to 20 % hard coal with the wood shredder material and to generate a ther- mal output of 4.5 MW with biogas.

The biomass fuel is transported to the furnace by a con- veyor. In addition to the biomass fuel store, there is also a coal bunker from which the hard coal is additionally dosed onto the conveyor via screws. The biogas is thermally utilised in the first boiler pass with a specially designed burner.

A further highlight in addition to the multi-fuel technology is the boiler design. Due to the high seismic activity in this region, the boiler was designed as a suspended boiler in order to withstand even the strongest vibrations caused by earthquakes.
Incheon (Korea) Waste wood-steam boiler with thermal oil heater The challenge in this project for one of the largest wood- based panel producers in Korea was to recycle production waste from MDF production in a combined superheated steam/thermal oil boiler plant with only one common furnace.

Another special feature of this plant is the water-cooled feed grate type 715, which is used due to the very high calorific value of the waste wood.

Kablitz supplied an extremely flexible system. The custo- mer can burn his various production wastes either via the water-cooled grate or the dust/granulate nozzles. The steam boiler supplies live steam for a turbine for ener- gy generation and process heat and the thermal oil boiler supplies thermal energy to two MDF presses via a 300 m long ring line. The customer generates environmentally friendly energy through the energetic utilisation of the residual materials from production. He can produce steam for his power generation as well as hot thermal oil with only one plant, thereby reducing his dependence on oil.

The combination of grate firing and dust/granulate nozzles allows a quick adjustment of the output to fluctuations of the heat consumers.