Method for extracting 1-methyl-2-(3-pyridyl) tetrahydropyrrole

The invention discloses a method for extracting 1-methyl-2-(3-pyridyl) tetrahydropyrrole, which comprises the following steps of: grinding tobacco biomass, pyrolyzing and collecting condensed liquid of the biomass pyrolysis oil gas; standing the condensed liquid to obtain 1-methyl-2-(3-pyridyl) tetrahydropyrrole mother solution in the middle layer; alkalizing the mother solution, and adding organic solvent with high distribution coefficient for extraction; evaporating the extraction solution to remove the organic solvent to obtain first crude extract; dissolving out the 1-methyl-2-(3-pyridyl) tetrahydropyrrole from the first crude extract by low-polarity organic solvent at 20-80 degrees centigrade; removing the solvent in the substance dissolved out to obtain second crude extract; and decompressing and distilling the crude extract, and collecting distillate of 160-170 degrees centigrade under 4.0-6.5kPa to obtain 1-methyl-2-(3-pyridyl) tetrahydropyrrole pure product. The invention realizes the aim of comprehensive utilization of integrated tobacco biomass by pyrolyzing byproducts of biomass carbon and wood tar.