The invention provides an internal dust removal type
pyrolysis and gasification device and method for organic
solid fuel. The device comprises a reacting furnace,
ceramic membrane tubes, a burner, a heat exchanging device, a condensing device, a gas
storage tank, a reverse blowing pipeline and a
temperature control device. One or more sets of the
ceramic membrane tubes are fixed at the top end of the reacting furnace, after
exhaust gas produced through
pyrolysis or gasification or
combustion of the organic
solid fuel in the reacting furnace penetrates through the
ceramic membrane tubes, gas-
solid separation is achieved, the gas is exhausted out of the reacting furnace through a produced gas outlet, and small solid particles in the
exhaust gas are blocked on the surface
layers of the
ceramic membrane tubes by the
ceramic membrane tubes or fall into an ash hopper. The produced gas is stored in the gas
storage tank after being cooled through the heat exchanging device and the condensing device, and the oil obtained through condensation is gathered into an oil gathering
bottle. The gas stored in the gas
storage tank can serve as the reverse blowing gas of the
ceramic membrane tubes and also serve as the
combustion-supporting gas for the
pyrolysis and the gasification of the organic
solid fuel of the reacting furnace. By means of the method, the energy utilization of the pyrolysis and the gasification of the organic
solid fuel is further improved,
pollution of
fly ash to surroundings is reduced, and the effects of
energy conservation and emission reduction are achieved.