Products

Boiler systems

General description of pulverised lignite fired boiler systems

By using the unique technology of our pulse burner systems, boiler systems can be fired with pulverised lignite.

The most economical and efficient option for our customers to realise their heat, steam and electricity supply. They value our know-how and our experience from many installed systems. And the systems are implemented exactly according to our customer requirements. A secure supply of energy and long-term planning of energy costs with domestic pulverised lignite are key decision-making reasons for selecting our technology.

Thanks to our many years of experience in the combustion of pulverised materials, we are the market leader in the field of pulverised lignite fired boiler systems. Naturally, the strict emission values according to TRD are met. The entire system operates without constant supervision in accordance with TRD 604.

With our technology, the lean and/or climate-damaging process gases often generated during production processes can be utilised to produce thermal energy. In addition to the cost savings achieved by eliminating the expense of disposing of harmful process gases, added value is also produced through thermal utilisation.

Besides supplying a turn-key solution, the system can also supplied through "savings contracting". This innovative energy supply concept guarantees you a lasting reduction in energy costs and doesn't require any investment expenses.

Functional description

After delivery by silo truck or railway Wagon, the fuel is discharged into the silo via a closed pipeline system. The discharge of the fuel is carried out by a rotary valve in the dosage machine.The dosage and transport to the burners takes place absolutely evenly and without pulsation. The burner produces a flame jet of up to 100 m/s whereby the ash is blown out and the combustion chamber stays clean. The emission limits will certainly not be reached through the optimum combustion. The ash extracted from the flue gas can be collected again in the course of a fuel delivery. Thus the natural cycle is closed.

long-term security of low fuel costs
boiler efficiency higher than 93%
low-maintenace and high system availability
economical operation without constant supervision (BOB according to TRD 604)
clean and dust-free handling
environmentally sustainable standard fuel (pulverised lignite) in accordance with the "Technical Manual for Clean Air" (TA - Luft). No additional measures required beyond flue gas de-dusting
thermal utilisation of climate-damaging waste gases
optional contracting model for cheap energy without high investment costs

Pulverised lignite fired boiler system

Information about the system:

The processed pulverised coal is delivered by silo truck or rail tanker car. The fuel is unloaded into the silo through a closed piping system. The pulverised coal immediately absorbs any oxygen in the silo; then the remaining nitrogen acts as shielding gas. Thus the stored fuel cannot be ignited either through sparks or heat and can be stored safely for a long time. This means that the fuel is inherently safe.
The muffle burner operates silently. It generates a flame jet with a velocity of over 100 m/s, which blows the ash out of the firing chamber and keeps it clean. Cleanliness is imperative.
If required, the ash is removed from the ash store after unloading and returned to the fuel supplier. Thus the natural cycle is closed.

Technical details

The boiler systems are designed and dimensioned according to customer requirements,
so the following benchmark data can only serve as a general reference.

Fuel	pulverised lignite
Output range	see below
Compliance with TAD Luft	yes
Thermal utilisation of non-standard gases	inherently possible

Performance data / control ranges

The flue gas emission limits are satisfied for operation with pulverised lignite within the specified performance range.
As the diagram shows, boilers with 2 flame tubes have a wider control range because 1 flame tube can be turned off.
Hot water boilers are regulated more efficiently with an "on - off" approach, rather than controlling the output. An almost unlimited control range can be implemented in this manner.

Technical details