With the Surtur, M&S offers an innovative grid burner for use in waste heat boilers. Designed for the latest generation of gas turbines, the efficient turbine exhaust gas burner achieves a residual O2 content from > 8% in the combustion process and optimum tempe­rature range. The future-proof burner design enables 100% burner output without the need for expensive and energy-consuming additional air. With the appro­priate design, pure fresh air operation is also possible. During operation, two different gaseous fuels can be burned independently of each other and in variable mixtures.

At the heart of the Surtur grid burner is its newly developed geometry: a specially calcu­lated profile optimizes the flow around the grid burner with the turbine exhaust gases and reliably ensures an ignitable fuel-air ratio from > 8% O2 content in the tempe­rature range of 1120–1600°C. Optio­nally, the Surtur can also be equipped with internally supplied augmenting air to ensure combustion at less than 8% O2 even in demanding thermal processes.

The Surtur grid burner was developed and simulated for the first time as a complete digital twin in terms of aerody­namics, thermo­dy­namics, combustion and mechanics/strength on the basis of CAD/CFD/FEM tools used in aviation. This digital model can be adapted to the specific project situation at short notice and the optimum system confi­gu­ration can be reliably deter­mined before production and imple­men­tation.

This gives boiler manufac­turers, EPCs and operators signi­fi­cantly greater project certainty right from the start with regard to compliance with all combustion parameters, perfor­mance under various load/fuel gas assump­tions and instal­lation and commis­sioning times.