System for implementing biomass pyrolysis process

The utility model discloses a system for implementing a biomass pyrolysis method. The system comprises a nitrogen device; the pyrolysis device is connected with the nitrogen device; the dust separation device is connected with the pyrolysis device; the direct cooling device is connected with the pyrolysis device; the indirect cooling device is respectively connected with the direct cooling device; the filtering device is connected with the indirect cooling device; and the gas storage device is connected with the filtering device. Therefore, the content of tar and impurities in the pyrolysis gas is reduced by adopting a physical cooling method, so that the deep purification requirement can be met, and the problem of extremely high operation cost caused by a chemical method can be avoided. And moreover, a graded cooling and purifying system is adopted, so that light oil products and heavy oil products can be obtained respectively, and the selling price of the oil products is increased. A graded cooling and puri