The invention discloses a three-phase multi-material three-dimensional pressurized clash
coal gasification device and a process thereof, which comprises a
coal slurry preparing and conveying mechanism, a dry
coal powder preparing and conveying mechanism and a pressurized gasification mechanism, wherein the
coal slurry preparing and conveying mechanism consists of a coal mill, a
coal slurry groove, a high-pressure
coal slurry pump and a high-pressure coal
slurry pipeline; the dry coal
powder preparing and conveying mechanism consists of a
dry powder preparer, a
dry powder storage groove, a screw-rod conveyer, a coal
powder pipeline and a
nozzle feeding bin; and the pressurized gasification mechanism comprises a
combustion chamber and a quench chamber. A water-coal
slurry nozzle and a dry coal powder
nozzle are arranged on the
combustion chamber and are respectively communicated with the interior of the
combustion chamber; and the dry coal powder nozzle and the water-coal slurry nozzle are also connected with a high-pressure
gas pipeline. The dry coal powder nozzle arranged at the top reduces the damages of the returned
air current mixture to the vault and the blind-head firebricks, thereby improving the
utilization rate of the equipment. The injection mode of the
dry powder and the
carbon dioxide at the top increases the content of carbon in the reactants, and the active ingredients in the
coal gas are increased to 85% above, thereby improving the utilization ratio of the coal resource and reducing the
discharge amount of
carbon dioxide.