NOVELTY - Laminar condenser comprises a horizontal barrel body (1) with rectangular cross section. One end of the barrel body is equipped with a pyrolysis gas inlet (2) while the other end is equipped with a pyrolysis gas outlet (3). A bio-oil outlet (4) is placed at the bottom of the barrel body. Multiple parallel condensing plates (5) are mounted in the barrel body along the pyrolysis gas flow direction. The upper end of each condensing plate is equipped with an overflow tank. The lateral wall of the overflow tank is symmetrical to the condensing plate.    USE - The laminar condenser is useful for pyrolysis and liquefaction of biomass.    ADVANTAGE - The condenser has high heat transfer efficiency due to low flow rate, low airflow, high temperature gradient and high working performance, and is simple, easy to operate and easy to clean.    DETAILED DESCRIPTION - Laminar condenser for biomass pyrolysis liquefaction comprises a horizontal barrel body (1) with rectangular cross section. One end of the barrel body is equipped with a pyrolysis gas inlet (2) while the other end is equipped with a pyrolysis gas outlet (3). A bio-oil outlet (4) is placed at the bottom of the barrel body. Multiple parallel condensing plates (5) are mounted in the barrel body along the pyrolysis gas flow direction. The upper end of each condensing plate is equipped with an overflow tank. The lateral wall of the overflow tank is symmetrical to the condensing plate. A horizontal distribution pipe mounted at the upper end of the barrel body is connected to a bio-oil inlet. The distribution pipe is provided with a branch pipe corresponding to each overflow tank. The bottom outlet of the branch pipe is inserted in the overflow tank, and the pyrolysis gas outlet in the barrel body is provided with a screen.    DESCRIPTION OF DRAWING(S) - The diagram illustrates a schematic representation of the laminar condenser.    Barrel body (1)    Pyrolysis gas inlet (2)    Pyrolysis gas outlet (3)    Bio-oil outlet (4)    Condensing plates (5)