| 摘要 |
The present invention provides a method of removing residual monomers comprising a step of charging a slurry of a vinyl chloride resin which has undergone a polymerization reaction into a tower (12) for removing residual monomers which comprises the following structural features: 1) the tower (12) has a generally cylindrical or an inverted circular cone shape with two or more different inner diameters, 2) the inner diameter of the upper section of the tower is greater than that of the lower section of the tower, 3) at least one perforated tray (1) is provided at the upper section of the tower, 4) at least one perforated tray (1a, 1b, 1c) is provided at the lower section of the tower, 5) a flow-down section for flowing down the slurry to the lower perforated tray (1a) is provided between the perforated trays, 6) a means (11) for ejecting in an upward direction in the tower is provided at the bottom of the tower, and 7) at least one hot water-ejecting device (5) is provided toward the perforated tray in the tower. <IMAGE>
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