Raw gas separator and raw gas separation method

The invention relates to the technical field of coal chemical industry. The invention provides a raw gas separator and a raw gas separation method. The raw gas separator comprises a cylinder body, a cylinder body upper sealing head, a cylinder body lower sealing head, a gas inlet pipe, a spraying assembly and a gas outlet pipe, wherein the cylinder body, the cylinder body upper sealing head and the cylinder body lower sealing head are assembled and welded to form a closed container; one end of the gas inlet pipe is welded to the cylinder and communicated with the cylinder, and the other end is communicated to the gasifier; the spraying assembly is welded to the side, close to the air inlet pipe, of the upper end socket of the barrel, and the lower end of the spraying assembly extends into the barrel and is provided with a plurality of spraying holes; the air outlet pipe penetrates through the cylinder upper sealing head and is welded with the cylinder upper sealing head, one end of the air outlet pipe extends