JPS63224754A - Solid-liquid separator of slurry - Google Patents

Abstract

PURPOSE:To separate liquid with high efficiency and to prevent the deterioration or the like of solid, by connecting a solid-gas separator to the outlet side of slurry of a heat exchanger for heating fed slurry and providing a takeout port of solid to the bottom of the solid-gas separator and providing a takeout part of gas to the top part thereof respectively. CONSTITUTION:A solid-gas separator 2 is connected to the outlet side of slurry of a plate fin-type heat exchanger 1 for heating fed slurry. A takeout port 4 of solid is provided to the bottom part of the solid-gas separator 2 and also a takeout port 5 of gas for taking out vaporized gas is provided to the top part. Since liquid can be separated in a short time with high efficiency by this simple structure and operation, possibilities causing the deterioration by heat history for the quality of the separated solid are prevented. Further this solid separator can be effectively applied as an equipment for separating mainly solid or powder from liquid such as a solvent.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention involves heating a slurry, which is mainly a mixture of powder and a solvent, and then separating the slurry into powder and solvent using a solid-gas separator such as a cyclone. The present invention relates to a slurry solid-liquid separator.

[Prior art]

Generally, in order to separate a slurry-like solid-liquid mixture, a liquid and a wet cake are separated using a filter or a centrifuge, and then the wet cake is processed in a dryer to remove residual liquid bones, or, When the liquid bone is relatively large, it is first concentrated using an evaporator and then separated into solid and liquid by the above-mentioned operation. According to this method, since switching operations and equipment having rotating parts are used, operation and maintenance are complicated and require a lot of manpower. In contrast, the present invention aims to provide a solid-liquid separator that integrates the steps into one and does not have a driving part.

[Purpose of the invention]

The present invention has been made to solve these conventional problems, and includes a cyclone or an alternative solid-gas separator (for example, a vacuum The purpose of the present invention is to provide a simple and highly efficient solid-liquid separator for slurry using a heating separator combined with a container (containing a filter, etc.).

[Structure of the invention]

In order to achieve the above purpose, a solid-gas separator is connected to the slurry outlet side of a plate-fin type heat exchanger that heats the supplied slurry, and a solid-gas outlet is provided at the bottom of the solid-gas separator. The heat exchanger rapidly heats the slurry of the mixture of the polymer and a volatile liquid such as a solvent, and the volume is reduced by evaporation. Due to the rapid flow of the expanded gas such as the solvent, the powder flows out without clogging the hot steel pipe vessel, and the slurry is introduced into a cyclone or an alternative solid-gas separation section to remove the solvent, etc. from the solid or powder. It is characterized by being separated as a gas.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic side view of a slurry solid-liquid separator according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a main part of the plate-fin type heat exchanger of FIG. 1. Front sectional view, 4th
The figure is a side sectional view of the main part in the direction AA of FIG. 3.

First, this slurry solid-liquid separator separates solids or powders from volatile liquids such as solvents, and heats the slurry S, which is a mixture of these solids or powders and liquids such as solvents. A cyclone 2 as a solid-gas separator is connected to the slurry outlet side of the plate-fin type heat exchanger 1, and a solids outlet 4 is connected to the bottom of the cyclone 2, and a solids outlet 4 is connected to the top of the cyclone 2. A gas outlet 5 for solvent, etc. is provided.

The heat exchanger 1 shown in FIGS. 1 and 2 above is heated by the heat medium shown by the arrow H, and as shown in FIGS. 3 and 4, it is made of solid or powder, a solvent, etc. It is formed by alternately stacking slurry units 12 and heat medium units 13 with partition plates 14 in between. The slurry unit 12 has corrugated fins 17A between two flat tube plates 16A.
Similarly, the heat medium unit 13 is formed by arranging corrugated fins 17B between two flat tube plates 16B.

In addition, the end of the slurry unit 12 is connected to a side par 18.
A, and the ends of the heating medium units 13 are respectively closed by side pars 18B, and each slurry unit 12 has a large number of slurries formed by two tube plates 16A and corrugated fins 17A interposed therebetween. Each heating medium unit 13 has a number of heating medium passages 22 formed by two tube plates 16B and corrugated fins 17B interposed therebetween.

Further, the slurry unit 12 and the heating medium unit 3 are combined so that the slurry passage 21 and the heating medium passage 22 are orthogonal to each other, and thus the heat exchanger 1 has a rectangular parallelepiped shape. , it is smoothly connected to the inlet 3 of the rectangular cyclone 2 as it is.

The plate-fin type heat exchanger 1 as described above has a high density heat transfer area, so heating is performed at a very high speed, so that the solvent etc. in the slurry S is rapidly vaporized and the volume increases, and the slurry passage The polymer in 21 is blown away at high speed into cyclone 2, and slurry S is created in heat exchanger 1.
There is no solid matter stuck inside or clogging.

Next, the gas such as the solvent in the slurry S blown away at high speed in the cyclone 2 is taken out from the gas outlet 5 at the top, and the polymer from which the solvent etc. has been separated is turned into powder and solid at the bottom. It is collected from the outlet 4.

Note that instead of the cyclone, a container may be used that has a built-in bag filter or the like and has the function of separating gas from solid or powder.

〔Effect of the invention〕

The slurry solid-liquid separator of the present invention described above combines a plate-fin type heat exchanger that performs high-speed heating with a cyclone or a container that has the function of separating gas and powder. It has many advantages such as simple structure and operation, highly efficient liquid separation in a short time, and no risk of deterioration of the quality of the separated solid due to thermal history.

Note that the solid separator of the present invention can be effectively applied as a device that mainly separates solids or powder from liquids such as solvents.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a slurry solid-liquid separator according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a main part of the plate-fin type heat exchanger of FIG. 1. Front sectional view, 4th
The figure is a side sectional view of the main part in the direction AA of FIG. 3. ■...Heat exchanger, 2...Cyclone, 3...Inlet, 4...Solid outlet, 5...Gas outlet, 16A,
16B...Tube plate, 17A, 17B...
Wave-shaped fin, S...slurry.

Claims (1)

[Claims] A solid-gas separator is connected to the slurry outlet side of a plate-fin type heat exchanger that heats the supplied slurry, and a solid-gas separator is provided at the bottom of the solid-gas separator, and a vaporized gas is taken out at the top of the solid-gas separator. Slurry solid-liquid separator equipped with a gas outlet.