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Combustion

Complete combustion means basically burning under stochiometric conditions; it seems easy: simply mixing some gas with the right amount of air and then activate the ignition source. The result should be a nice flame causing a rise of the temperature inside the combustion chamber, finally leaving the combustor as a relatively clean flue gas. In praxis however many difficulties may be experienced, like unwanted gas concentrations due to bad adjustment of the control system or from poorly adjusted burners resulting in the formation of carbon monoxide and other unwanted hydrocarbons. This gets even more important when using more difficult feedstocks (biomass e.g.) which due to their natural origin contain also nitrogen compounds. See also the results of stubble burning after harvesting as is still done in many areas of the world.
stubble burning

SR2.0's developed in the past years therefore the most appropriate technology, being a swirling Vortex technology, which meet all mentioned design criteria: perfect mixing and in combination with relatively small particles as feed, an extremely short residence time. The control system is specially adapted to these conditions and perfectly meets the requirements for complete combustion of the feed.

Today we see combustion more and more as the cause of our climate change, simply because CO2 will inevitably be set free by combustion basically any fuel, especially in case of using fossil fuels:
The problem however in that case is not that CO2 is produced, that is inevitable, as fossil fuels all originated from "old" biomass, in which the CO2 from centuries ago is stored; it is the accelerated release of “old” CO2,which disrupts the balance on earth.
Combusting waste biomass should therefore be acceptable if you look at the carbon cycle as shown here and even more so when we can prevent the unwished emissions of hydrocarbon and nitrogen compounds.

At SR2.0 equipment this is part of the design process that such emissions are already combated by taking appropriate measures in the combustion chamber and designing the control system on it.

From an ecological standpoint however, the least favorable process of alle conversion processes shown here is the combustion of biomass, we would rather choose a pre-gasification unit before combusting as the expelled syngas from the gasifier is easier to handle than the flue gas from the combustor. Also carbonizing the feed would be an viable alternative, in the case that extra care has to be taken with the specific feedstock at hand.

A typical example of the choice for a SR2.0 combustor has been the combustion of ash (comes usually available in rather small particles) from a gasification process which is using dried and shredded grass or dried manure.

A typical example of the choice for a SR2.0 combustor has been the combustion of ash (comes usually available in rather small particles) from a gasification process which is using dried and shredded grass or dried manure.