Patent ID: 9616405
Date: 2017-04-11
CPC Classifications: B01D,B01F,B01J,B02C,C08C,C08F,C08J

Claim:
1. A steam stripping apparatus comprising: at least one cylindrical upright crumbing tank which recovers a rubbery polymer from a solution containing the rubbery polymer by means of steam; a stir shaft, inside the crumbing tank, which extends in a cylindrical upright direction, and which rotates in an axial direction; an impeller that extends from a center of the stir shaft in a direction of an inner wall face of the crumbing tank; a knife blade mounted on the impeller, wherein the knife blade has a cutting edge with an edge angle between 10 and 60 degrees that faces in a rotational direction of the stir; and a baffle plate arranged on an inner wall face of the crumbing tank; wherein the baffle plate has an approximately triangular cross-sectional area having, on a cross section in a cylindrical lateral direction of the crumbing tank, an upstream side and a downstream side with respect to a flow direction of a fluid inside the crumbing tank, and in which the upstream side and the downstream side meet to form an intersection point; an angle of the baffle plate that is formed by a line segment of the upstream side on the cross section in the cylindrical lateral direction of the crumbing tank and a line segment that connects to the intersection point from the center of the stir shaft is between 30 and 75 degrees; an angle of the baffle plate formed by a line segment of the downstream side on the cross section in the cylindrical lateral direction of the crumbing tank and the line segment that connects to the intersection point from the center of the stir shaft is between 30 and 75 degrees; and the crumbing tank includes a steam supply port at a bottom portion thereof to feed the steam into the crumbing tank.