Pulsed combustor assembly for dehydration and/or granulation of a wet feedstock

A pulsed combustor assembly for dehydration or granulation of a wet feedstock, in particular a viscous feedstock containing at least one of natural fibres, sugars, vegetable starches, or combinations thereof comprising a combustion chamber, at least one fuel supply line, at least one air supply line, and at least one pulsed air generator, wherein the pulsed air generator is connected to the air supply line for generating at least a first pulsed air stream with a pulse frequency f1 entering the combustion chamber;

• a second air supply line and a second pulsed air generator being connected to the second air supply line and configured to generate a second pulsed air stream with a pulse frequency f2 entering the combustion chamber, wherein f2 is higher or lower than f1;
• a control means for adjusting the frequency f1 within a predetermined range and for adjusting the frequency f2 within a predetermined range;
• wherein the control means is configured to adjust the frequencies f1 and f2 to generate a beat frequency f3 within the combustion chamber;
• and
• wherein the control means is configured to adjust the frequencies f1 and f2 such that the combustion chamber functions as a low pass filter filtering the average frequency f4=(f1+f2)/2, and preferably odd and even harmonics thereof, wherein the beat frequency f3 of the frequencies f1 and f2 passes the combustion chamber.