The application discloses a
system for purifying synthetic gas and regenerating
rapeseed oil methyl ester, which regenerates the
rapeseed oil methyl ester by removing impurities and
tar by means of the steam method of a stripping unit, and adds the regenerated
rapeseed oil methyl ester into a washing unit, so that the rapeseed oil methyl ester in the washing unit can better absorb the
tar under the condition that a small amount of fresh rapeseed oil methyl ester is added into the washing unit, and the phenomenon of
supersaturation is reduced as much as possible; the application also uses the regenerated rapeseed oil methyl ester and the mixed
emulsion after cooling to make the
moisture in the synthetic gas into condensed liquid through condensation, and capture the water-soluble pollutants of the synthetic gas through the condensed liquid; in conclusion, the application can remove the
tar and the water-soluble pollutants at the same time under mild conditions, and can efficiently utilize the rapeseed oil methyl ester.