The invention discloses a forced-draft flameless
combustor, which mainly solves the problems of incomplete gas
combustion and
black smoke rising of the conventional
combustor. The forced-draft flameless
combustor comprises a combustor main body, wherein an air inlet is arranged at the bottom of the combustor main body, and a
combustion seat is arranged at the top of the combustor main body; a gas inlet
pipe is arranged in a vertical part of the combustor main body; a gas inlet is arranged at the bottom end of the gas inlet
pipe, and an internal
nozzle is arranged at the top end of the gas inlet
pipe; the
combustion seat is formed by movably overlapping a plurality of
layers of funnel-shaped structures; and an adjustable clearance is reserved between every two
layers of funnel-shaped structures. By unique design of the forced-draft flameless combustor, gas can be completely combusted, temperature is uniform during the arrangement of a plurality of combustors, a disk-shaped blue
flame can be formed, a process is safe, carbon absorption is avoided, the problems of
back fire and
black smoke rising are solved, and the forced-draft flameless combustor is particularly applicable to a
cracking furnace.