Solvent separation apparatus and solvent separation method
First Claim
Patent Images
1. A method for separating a polymer and a solvent using a solvent separation apparatus comprisinga stripping unit in which a solvent outlet, a polymer outlet and an inlet are formed;
- a water tank having a water outlet;
a heat exchange zone;
a mixing zone for mixing water in the water tank with a polymer solution and a piping system,wherein the piping system comprises a first line connecting the water outlet and the mixing zone, a second line connecting the mixing zone and the inlet of the stripping unit; and
a third line configured so that a mixture of a solvent and water can be discharged from the solvent outlet of the stripping unit,wherein in the first line, an oily water outlet and an oily water inlet are formed, the piping system further comprises a fourth line configured so that a part of the water moving through the first line can be discharged through the oily water outlet and then recovered to the first line through the oily water inlet, and the third and fourth lines are configured to cross through via the heat exchange zone such that the water discharged through the oily water outlet can be heat-exchanged with the mixture of the solvent and the water moving through the third line and then recovered to the oily water inlet,the method comprising;
mixing the water from the water tank with a polymer solution to form a mixture, wherein the polymer solution comprises the polymer and the solvent;
supplying the mixture to the stripping unit to separate the polymer and the solvent;
heat-exchanging the water introduced from the oily water outlet of the first line into the heat exchange zone through the fourth line with the mixture of the solvent and the water discharged from the stripping unit through the third line to form a heat-exchanged water, andintroducing the heat-exchanged water into the inlet of the first line.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a solvent separation apparatus and a solvent separation method, and the solvent separation apparatus and the solvent separation method according to the present application can reduce the used amount of cooling water and the used amount of steam, in a process of separating a polymer and a solvent.
-
Citations
8 Claims
-
1. A method for separating a polymer and a solvent using a solvent separation apparatus comprising
a stripping unit in which a solvent outlet, a polymer outlet and an inlet are formed; -
a water tank having a water outlet;
a heat exchange zone;
a mixing zone for mixing water in the water tank with a polymer solution and a piping system,wherein the piping system comprises a first line connecting the water outlet and the mixing zone, a second line connecting the mixing zone and the inlet of the stripping unit; and
a third line configured so that a mixture of a solvent and water can be discharged from the solvent outlet of the stripping unit,wherein in the first line, an oily water outlet and an oily water inlet are formed, the piping system further comprises a fourth line configured so that a part of the water moving through the first line can be discharged through the oily water outlet and then recovered to the first line through the oily water inlet, and the third and fourth lines are configured to cross through via the heat exchange zone such that the water discharged through the oily water outlet can be heat-exchanged with the mixture of the solvent and the water moving through the third line and then recovered to the oily water inlet, the method comprising; mixing the water from the water tank with a polymer solution to form a mixture, wherein the polymer solution comprises the polymer and the solvent; supplying the mixture to the stripping unit to separate the polymer and the solvent; heat-exchanging the water introduced from the oily water outlet of the first line into the heat exchange zone through the fourth line with the mixture of the solvent and the water discharged from the stripping unit through the third line to form a heat-exchanged water, and introducing the heat-exchanged water into the inlet of the first line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
Specification