Shaft furnace: Rotary blowers and centrifugal compressors are used in the process to supply combustion air into the reformers and a process gas compressor, seal gas compressor, and a cooling gas compressor are required to help circulate the process gas.
Rotary kiln furnace: Combustion air is supplied into the combustion chamber by a forced draught fan. The waste gases are utilised to heat a boiler, and a waste gas induced draught fan draws the hot gases through the waste gas boiler and electrostatic participator before releasing them to the atmosphere.