Sweden-based ECOMB AB, a combustion engineering company has announced that it has received new orders concerning nitrogen oxides (NOx) reduction in waste-to-energy (WtE) plants from both France and Sweden.
comprises retractable lances – Ecotubes – that are equipped with injection nozzles. Various agents can be introduced
through the nozzles at high pressure and velocity into the furnace media. The Ecotubes are strategically positioned
within the furnace enabling the injected agents to create a radically improved mixing of the combustion products,
resulting in destruction of laminar gas columns and the formation of completely mixed turbulent flow patterns (illustration courtesy ECOMB).
In France, the order is for spare parts for the waste-fired Econotre plant outside Toulouse, southern France. The two waste-fired boilers at Econotre still show very good values – after 15 years of operation with ECOMB’s proprietary Ecotube system, the NOx content of the flue gas is reduced by almost 60 percent only through a smarter addition of the combustion air, via the Ecotube system. No chemicals such as urea or ammonia are used to reduce NOx emissions.
In Sweden, the order is a consultation for a plant in Umeå, northern Sweden. The boiler is fired with biomass and is subject to the next tightening in the EU directives, which for Sweden, will start to apply from 2021. The project is in an initial phase with a feasibility study including live combustion footage in different boiler settings as available operational data is insufficient to assess and guarantee the major improvements that can be achieved.
The order value totals SEK 0.6 million (≈ EUR 56 000) and deliveries will be made during Q1 this year.
