In this combustor system, catalytic combustion temperature is controlled under 1000 °C, premixed gas is injected from the premixing nozzles to the catalytic combustion gas and lean premixed combustion over 1300 °C is carried out in the ceramic liner.
Flameless oxidation (FLOX) and continuous staged air combustion (COSTAIR) are two relatively new technologies to control the combustion temperature and the reaction rate and consequently to control the NOx emissions.
At the pilot scale, plants are burnt in a boiler dedicated to biomass combustion; temperature cannot be precisely controlled and reaches 900 °C, which is likely to modify the chemical composition of ashes.
The design intent is to use this inter-stage cooling to control the combustion temperature rather than the more conventional alternative of recycling flue gas.
Similarly, no attempt was made to select specific plant species, or to strictly control the combustion temperature and atmosphere, as no assumptions can be made about the origin and treatment of ash used in 17th century paintings.
In order to control the NO formation, the control of peak combustion temperature is the key factor, as well as the oxygen concentration in the combustion areas.
The morphology of fly ash particle is controlled by combustion temperature and cooling rate.
Under these conditions the combustion temperature and burning velocity were controlled in the range of 1300 1580 °C and 0.065 0.18 cm/s, respectively, and boron nanoparticles in a ∼20 200 nm size range were obtained.
Carbonation occurs in a two-stage fluidized bed carbonator combustor allowing for optimal temperature control for both combustion (850 950 °C) and carbonation (650 750 °C).
The results of the ash fusion test for different biomass fuel ashes and simulated ashes can be used in boiler design and operation to determine or control a reasonable combustion temperature.
Hence, the length of the NP-chain and size of the NPs are mainly controlled by the combustion temperature of the solvent, which affects the induced gas flow velocity and the NP precursor concentration.
