The powder coal incinerator works the same as the sludge dryer incinerator. The powder coal incinerator is fueled with powder coal. Improve the design of your RTO by using ceramic foam as RTO media. Normally RTO media have small surfaces, but ceramic foam as RTO media have strong benefits. Ceramic foam as RTO media give smaller beds, resulting in smaller units.
Ceramic foam has a very big surface.
RTO media need to have big surfaces.