Dear researchers,

In literature, so far I am seeing that downdraft is usually used for small-scale purposes (10kW-10MW). One of the reasons behind is "they do not allow for uniform distribution of flow and temperature in the constricted area (throat)". What can be other reasons?

And the main question is: is there any way to upscale it? For instance, for 30 t/h feed rate? Is it feasible and possible?

I would be grateful for any insight!