Patent ID: 6494994
Filing Date: 2002-12-17
Classification: D21B,D21D

Abstract:
A pulp heating apparatus comprising:a heater main body having a pulp introduction port for introducing pulp, a vapor introduction port for introducing vapor, a disperser for dispersing the pulp introduced via the pulp introduction port under a high temperature and a pulp exhaust port for exhausting the pulp dispersed by the disperser, and said heater main body being arranged in horizontal direction, wherein said disperser has a spiral vane section which continues spirally around a rotational shaft and discontinuous vane sections around the rotational shaft, wherein said pulp introduction port is provided at a bottom section of said heater main body and is connected with an introduction passage and a screw conveyor is provided on the introduction passage, wherein a forward end of the introduction passage faces towards the spiral vane section.