KR102219466B1 - dissolving apparatus for liquid polymer of mixed - Google Patents

Abstract

The present invention relates to an apparatus for dissolving a liquid polymer by foam to increase the dissolution ratio of a raw liquid polymer solution. According to the present invention, the apparatus comprises: a raw liquid polymer solution storage tank containing a raw liquid polymer solution and mixing the same by a first stirrer; a polymer solution storage tank receiving and storing a polymer solution, in which the raw liquid polymer solution and water are mixed, and mixing the same by a second stirrer; a polymer solution discharge tank overflowing the polymer solution contained in the polymer solution storage tank to mix the overflown polymer solution by a third stirrer and discharge the same; a chamber into which an outlet of a raw liquid polymer solution discharge pipe, from which the raw liquid polymer solution contained in the raw liquid polymer solution storage tank is discharged, and an outlet of a water supply pipe supplying the water are introduced; a foam chamber provided in the chamber and divided by a partition wall, so that the outlet of the raw liquid polymer solution discharge pipe and the outlet of the water supply pipe are introduced at one side and the discharged raw liquid polymer solution and water collide with each other to form foam and be primarily mixed; and a vortex chamber provided on the other side of the partition wall, allowing the polymer solution mixed in the foam chamber to flow in through the partition wall to form a vortex and be secondarily mixed, and including a polymer solution supply pipe discharging the polymer solution to the polymer solution storage tank. The foam chamber comprises: a driving motor mounted on outer one side of the chamber; a pulsator mounted on a shaft of the driving motor and having agitating blades arranged in the circumferential direction except for a central part; and the raw liquid polymer solution discharge pipe disposed on a vertical line coincident with the shaft of the driving motor through the chamber and the partition wall and having a tip end formed of a nozzle pipe.

Description

Dissolving apparatus for liquid polymer of mixed by foam

The present invention relates to an apparatus for dissolving a liquid polymer by foam, and more particularly, a liquid polymer with high viscosity diffuses and collides with the stirring blade of a rotating pulsator when it is ejected at high speed to form foam and water to be supplied. It also relates to a liquid polymer dissolving device by foam that can improve the dissolution rate of the polymer stock solution by colliding with the stirring blade of the pulsator and allowing the polymer stock solution foam and the water foam to be mixed in a foamed state.

In general, polymers are polymers that have a large molecular size and are not easily soluble in solvents such as water, and powdery polymers are easier to handle, transport and store than liquid polymers.

The powdery polymer is used as a suspension material. However, it is not easy to prepare a suspension using the powdered polymer.

This is because when the polymer comes into contact with water, the adhesive property increases to form a lump by lumping together.

As a result, the surface of the lump is slowly dissolved in contact with water, but the inside of the polymer lump is blocked with water, so that the dissolution of the polymer by water proceeds very slowly, so it takes a lot of time to make a suspension of a desired concentration.

In addition, since the conventional polymer dissolving device is a single device limited to the melting part, there is an inconvenience of having to transfer the aging process after dissolving the polymer to a separate tank, and the device is complicated and the manufacturing cost must be high. there was.

Due to the above problems, a dissolving device using a liquid polymer as a polymer coagulant has been recently developed.

Therefore, as a proposal, the name of the invention and a liquid polymer dissolving device were proposed in Korean Registered Patent Publication No. 10-0843348, and the name of the invention, liquid polymer automatic dissolving device was proposed in Korean Registered Patent No. 10-1023986. Has been proposed.

However, the liquid polymer dissolving device of Registration No. 10-0843348 is controlled by a system so that the steps of supplying the polymer stock solution and mixing, dissolving, and aging with water are all performed in a single device, and its configuration is as follows.

That is, a polymer storage tank that receives and stores a liquid polymer stock solution, a polymer melting and aging tank that stores diluted water that is dissolved by mixing liquid polymer and water for a certain period of time, and a certain amount of water to drain the aged diluted water. It is divided into a water outlet preparation tank for preparation and is divided into a polymer tank.

In addition, the polymer stock solution from the polymer storage tank is pumped and transferred to the polymer melting and aging tank, but the polymer stock solution supply line is mixed with water before it is added to the polymer melting and aging tank, and water is supplied for mixing before the liquid polymer stock solution is added. Water supply line, a stirring means installed on the polymer dissolution and maturation tank and the water outlet preparation tank to increase the dissolution rate by inducing a continuous flow of dilution water without stagnation. It is provided with a water level sensor for sensing, a control unit for controlling the polymer stock solution supply line, the water supply line and the stirring means by receiving the detection signal of the water level sensor.

However, in the liquid polymer dissolving device as described above, the polymer storage tank, the polymer melting and aging tank, and the water outlet preparation tank are installed with a number of pipes and a plurality of valves that open and close the pipes, so that many parts are required, which increases the manufacturing cost due to the number of parts. there was.

In addition, while the liquid polymer undiluted solution and water flowed into the mixing reservoir are supplied, they enter the mixed and diluted state, and the dissolution rate of the liquid polymer is increased by the vortex guide of the guide tube interposed between the mixing reservoir and the polymer melting and aging tank. It means that water is sprayed and supplied through the branch pipe to further improve the dissolution rate and continuously stir in the polymer reservoir.

However, the liquid polymer stock solution described above is a material with a high viscosity of about 500 to 2,000 CPS (centi poise), so when the first liquid polymer enters the mixing reservoir with water, it is not sufficiently diluted, that is, it is not dissolved sufficiently. There is a problem in that the polymer stock solution is not sufficiently dissolved by the dissolved water only by dependence of the stirrer that flows into the polymer reservoir and rotates in the polymer reservoir.

In addition, the liquid polymer automatic dissolving device of Registration No. 10-1023986 described above can improve dissolution efficiency by completely dissolving the liquid polymer used as a polymer coagulant, and reduce cost through automation. same.

That is, a liquid polymer storage tank equipped with a stirrer to store the liquid polymer stock solution and dissolve the polymer stock solution in the diluted water, and a dilution water supply line that supplies dilution water to dilute the liquid polymer stock solution supplied from the liquid polymer storage tank. , A venturi injector that mixes and sprays the liquid polymer stock solution and diluted water, a mixer that partially dissolves the liquid polymer solution sprayed from the venturi injector through rapid agitation, stores the liquid polymer solution introduced from the mixer, and uses a stirrer installed inside. Storage of completely soluble polymer

It consists of a control unit for operating and automatically controlling the operation of the bath, stirrer, dilution water supply line, venturi injector and mixer.

Here, the liquid polymer stock solution and the diluted water are first mixed in a venturi injector and then sprayed through a mixer having a position setting function to sufficiently dissolve the liquid polymer solution.

However, the Venturi injector has a structure in which a contraction tube is installed in a part of the tube, and the liquid polymer stock solution and the diluted water are diluted by the pressure difference.As described above, the polymer stock solution and the diluted water having different viscosity are sufficiently mixed by the Venturi injector. There was a problem that could not be mixed.

That is, the Venturi injector uses the difference in flow rate, and there is a problem in that it cannot perform primary dissolution while passing through the Venturi injector at high speed after two materials having different viscosities, that is, polymer stock solution and diluted water, are introduced at an appropriate speed.

As a result, with the above-described conventional technology, since the polymer stock solution and water (or dissolved water) are supplied in a state that is not sufficiently diluted, that is, the polymer stock solution is supplied in a state that is not sufficiently dissolved, the aggregation rate and dehydration efficiency of the sludge decrease. There was a problem of mass production of sludge accordingly.

The above-described problems are due to structural problems in which the polymer stock solution could not be sufficiently mixed and dissolved in water at the initial stage when the viscosity of the polymer stock solution was highest when the polymer stock solution was mixed and dissolved with water through several dilution steps. The problem is becoming a prerequisite to be solved in this field.

KR 10-0843348 B KR 10-1023986 B

Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention, is, before performing the process of mixing the polymer stock solution with water through several processes, in particular, the polymer stock solution in the initial stage where the viscosity of the polymer stock solution is highest. It is to provide a device for dissolving liquid polymer by foam so that the fruit and water are sufficiently mixed and dissolved.

Another object of the present invention is to improve the structure of the liquid polymer dissolving device so that the liquid polymer with high viscosity diffuses and collides with the stirring blade of the rotating pulsator when it is ejected at high speed, so that foam is initially created and small drops of undiluted solution are generated during the process. The water that is generated and supplied at the same time collides with the stirring blade of the pulsator to create a foam in the beginning and to generate a small water droplet during the process, so that the liquid polymer foam (or small polymer stock solution) and the water foam (or small water droplets) It is to provide a foam-based liquid polymer dissolving device capable of improving the dissolution rate of a polymer stock solution by mixing.

Another object of the present invention is to provide a foam-based liquid polymer dissolving device capable of reducing the number of parts by improving the structure of the liquid polymer dissolving device and thus simplifying the structure to lower the manufacturing cost.

Another object of the present invention is to provide a foam-based liquid polymer dissolving device capable of improving the structure of the liquid polymer dissolving device to sufficiently dilute the polymer stock solution and water to improve the coagulation rate and dewatering efficiency of sludge and thereby reduce sludge. To provide.

In order to achieve the above object, an embodiment of the present invention includes a polymer stock solution storage tank containing a liquid polymer stock solution and mixed by a first stirrer; A polymer solution storage tank in which a polymer solution in which the polymer stock solution and water are mixed is supplied and stored, and mixed by a second stirrer; A polymer solution discharge tank in which the polymer solution contained in the polymer solution storage tank overflows and is mixed and discharged by a third stirrer; A chamber through which an outlet of a polymer stock discharge pipe through which the polymer stock solution contained in the polymer stock solution storage tank is discharged and an outlet of a water supply pipe supplying water are introduced; A foam chamber provided in the chamber and divided by a partition wall so that an outlet of the polymer undiluted solution discharge pipe and an outlet of the water supply pipe are introduced at one side to form a foam by colliding with the discharged polymer undiluted solution and water to form a foam chamber; Foam comprising a vortex chamber provided on the other side of the partition wall and having a polymer solution supply pipe through which the polymer solution mixed in the foam chamber flows through the partition wall, forms a vortex, and is mixed secondarily and discharged to the polymer solution storage tank In the liquid polymer dissolving apparatus by, the foam chamber includes a driving motor mounted on an outer side of the chamber; It is mounted on the shaft of the drive motor and includes a pulsator in which stirring blades are arranged in a circumferential direction excluding a central portion; It provides a liquid polymer dissolving device by foam, characterized in that a polymer stock solution discharge pipe, which passes through the chamber and the partition wall and has a tip portion as a nozzle pipe, is further provided on a vertical line coincident with the axis of the drive motor.
A modified example for effectively realizing the object of the above embodiment further includes that the distal end of the polymer undiluted solution discharge pipe is expanded in a shape of an upper optical lower narrow including a nozzle tube, wherein a flow path is formed in the circumferential direction of the nozzle tube inside the distal end. It is effective that a guide is provided.

delete

delete

delete

The present invention having the above configuration has the following effects.

First, by improving the structure of the liquid polymer dissolving device, especially when mixing and dissolving the polymer stock solution with water through several processes, especially in the initial stage where the viscosity of the polymer stock solution is highest, the polymer stock solution and water are sufficiently mixed and dissolved. By making it possible to do so, there is an effect of providing a polymer solution that improves the dissolution rate of the polymer stock solution during various steps.

Second, by improving the structure of the liquid polymer dissolving device, the liquid polymer with high viscosity diffuses and collides with the stirring blade of the rotating pulsator when ejecting at high speed to create a foam (or droplet). There is an effect of improving the dissolution rate of the polymer undiluted solution by colliding with the stirring blade to create a foam, and mixing the liquid polymer foam and the water foam when they collide with each other and burst.

Third, by improving the structure of the liquid polymer dissolving device, the number of parts can be reduced, and the structure can be simplified accordingly, so that the manufacturing cost can be lowered. Therefore, there is an effect of increasing the price competitiveness by supplying inexpensively.

Fourth, there is an effect of improving the structure of the liquid polymer dissolving device to sufficiently dilute the polymer stock solution and water to improve the aggregation rate and dewatering efficiency of the sludge, thereby reducing the sludge.

1 is a block diagram showing the overall flow chart of the present invention
Figure 2 is an inner cross-sectional view of the casing for showing the vortex chamber and foam chamber according to the present invention
3 is a cross-sectional view showing a main part of a nozzle pipe according to the present invention

Hereinafter, preferred embodiments of the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an overall flow diagram of a liquid polymer dissolving apparatus by foam to which the present invention is applied.

As shown, in the apparatus for dissolving liquid polymer by foam according to the present invention, the polymer stock solution storage tank 100, which is mixed by the first stirrer 110 and the liquid polymer stock solution is contained, and the polymer stock solution storage tank 100 A polymer solution in which the polymer stock solution and water are mixed is supplied and stored through the polymer solution supply pipe 120, and the polymer solution storage tank 200 is mixed by the second stirrer 210, and the polymer contained in the polymer solution storage tank 200 The solution overflows and includes a polymer solution discharge tank 300 mixed and discharged by the third stirrer 310.

Here, the polymer stock solution means a liquid polymer stock solution, and the polymer solution means a state in which the polymer stock solution is mixed with water.

A polymer stock solution discharge pipe 22 is penetrated outside the polymer stock solution storage tank 100 to discharge the polymer stock solution contained in the polymer stock solution storage tank 100 by the pumping force of the pump P.

In addition, the polymer stock solution discharged through the polymer stock solution discharge pipe 22 is mixed with water introduced through the water supply pipe 23 and dissolved.

The outlet of the polymer stock solution discharge pipe 22 and the outlet of the water supply pipe 23 are introduced into the chamber 30.

The chamber 30 may be attached to the outside of the polymer stock solution storage tank 100, but may be disposed in a suitable place of the polymer dissolving device.

The chamber 30 is divided into a foam chamber 50 and a vortex chamber 60 by the partition wall 40 as shown in FIG. 2.

In the foam chamber 50, the outlet of the polymer undiluted solution discharge pipe 22 and the outlet of the water supply pipe 23 are respectively drawn in, and the discharged polymer undiluted solution and water collide and are first mixed, and the vortex chamber 60 The polymer solution mixed in the foam chamber 50 flows through the hole 41 formed in the partition wall 40 and is secondarily mixed by the formed eddy current.

That is, the foam chamber 50 includes a driving motor 51 mounted on one outer side of the chamber 30, mounted on the shaft 52 of the driving motor 51, and circumferentially excluding the central part. It includes a pulsator 53 in which the stirring blades 54 are arranged in the direction.

In place of the pulsator 53, a blower fan, which is a centrifugal fan, may be used to achieve the object and effect according to the present invention.

In addition, on a vertical line coinciding with the shaft 52 of the driving motor 51, a polymer undiluted solution discharge pipe 22 is provided that passes through the chamber 30 and the partition wall 40 and has a tip portion as a nozzle pipe.

Preferably, the shaft 52 of the drive motor 51 is effective to repeat protrusion and protrusion.

In other words, it is effective to repeat that the shaft 52 appears and protrudes and the distance to the tip of the undiluted solution discharge pipe 22 becomes closer and further away.

For this purpose, the distal end of the polymer stock solution discharge pipe 22 is preferably formed in the shape of a nozzle pipe (or Venturi pipe), as shown in FIG. It is effective that a separate guide 22a is provided, which is a blockage structure that forms a flow path through which the undiluted solution is discharged only in the circumferential direction of the tube and is not discharged to the center.

Preferably, the partition wall 40 is preferably formed with a plurality of holes 41 through which the polymer stock solution first mixed in the foam chamber 50 flows into the vortex chamber 60, and more preferably, It is more preferable that the holes 41 are formed in different diameters, and the exit directions are also alternately formed in irregular directions.

The operation of the present invention configured as described above will be described.

The initial state of the present invention is the same as in FIG. 1.

In the above state, an appropriate amount of a liquid polymer stock solution is stored in the polymer stock solution storage tank 10.

In addition, the first stirrer 11 rotates and evenly mixes the viscous polymer stock solution.

When using the polymer undiluted solution in the above state, the valve provided in the polymer undiluted solution discharge pipe 22 is first opened, and the polymer undiluted solution is discharged by the pumping force generated by the operation of the pump P, and at the same time the valve on the water supply pipe 23 side. Also open, water is supplied, and at the same time, the drive motor 52 is driven, and the pulsator 53 installed on the drive motor shaft 52 is rotated.

When the polymer undiluted solution and water are supplied as described above, the polymer undiluted solution is discharged while diffusing at a low pressure state when the polymer undiluted solution passes through the polymer undiluted solution discharge pipe 22 and a nozzle pipe formed at the front end thereof.

At this time, as the guide 22a is installed inside the front end of the undiluted solution discharge pipe 22, the polymer undiluted solution is ejected along the flow path formed at the edge of the guide 22a and collides with the stirring blade 54 of the pulsator 53 The water that is crushed into foam (or small particles) and supplied through the water supply pipe 23 collides with the stirring blade 54 as well, and is initially crushed with foam, and the polymer undiluted foam foams and the incoming water also foams. The two bubbles, that is, the foam of the polymer undiluted solution and the foam of the water, are mixed and mixed, and the first becomes a polymer solution.

Of course, the above-described operation is possible by the structure of the pulsator 53 equipped with the stirring blade 54 as described above in the configuration description, but the operation of the present invention as described above can be expected even when a blower fan is used.

At the same time, the drive motor shaft 52 moves forward and backward, that is, up and down in the drawing, and the distance from the front end of the polymer undiluted solution discharge pipe 22 is reduced and then repeatedly moved away, and the polymer collides with the stirring blade 54 The impact strength of the undiluted solution is changed, and the polymer undiluted solution and water are first mixed.

Meanwhile, as described above, the polymer stock solution firstly mixed in the foam chamber 50 is discharged to the vortex chamber 60 through the partition wall 40.

Here, the foam chamber 50 has high internal pressure and water pressure, and the pulsator 53 repeats the pumping operation moving up and down to increase the internal pressure, so that the polymer solution first mixed in the foam chamber 50 is foamed. The internal pressure of the chamber 50 flows into the vortex chamber 60 at a high speed through the hole 41 formed in the partition wall 40.

At this time, since the holes 41 have different diameters and the directions of the holes 41 penetrating toward the vortex chamber 60 are different, the polymer solution introduced into the vortex chamber 60 is the hole 41 ), a vortex is formed, and is mixed and mixed secondarily in the vortex chamber 60.

The polymer solution completed by the first and second mixing as described above is supplied to the polymer solution storage tank 200 through another polymer solution supply pipe 120, and at the same time, the second agitator 210 continuously rotates and the polymer solution storage tank The polymer solution stored in 200 is mixed.

In addition, the polymer solution stored in the polymer solution storage tank 200 gradually overflows when the water level rises, and the third agitator 310 flows into and stores the polymer solution discharge tank 300 in which the third agitator 310 continuously rotates. Is discharged along the path of.

Meanwhile, in the above operation, the polymer stock solution supply amount and the water supply amount are controlled by the control of the control unit omitting the drawing, and a plurality of valves and pumps for controlling the supply amount and water supply amount of the polymer stock solution are opened and closed.

It will be appreciated that the present invention as described in detail above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art.

Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and All changes or modified forms derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

22; Polymer stock solution discharge pipe 22a; guide
23; Water supply pipe 30; chamber
40; Bulkhead 41; hall
50; Foam yarn 51; Drive motor
52; Drive motor shaft 53; Pulsator
54; Stirring blade 60; Vortex room
100; Polymer stock solution storage tank 110, 210, 310; 1st, 2nd, 3rd agitator
120; Polymer solution supply pipe 200; Polymer solution storage tank
300; Polymer solution discharge tank P; Pump

Claims (4)

delete A polymer stock solution storage tank containing a liquid polymer stock solution and mixed by a first stirrer;
A polymer solution storage tank in which a polymer solution in which the polymer stock solution and water are mixed is supplied and stored, and mixed by a second stirrer;
A polymer solution discharge tank in which the polymer solution contained in the polymer solution storage tank overflows and is mixed and discharged by a third stirrer;
A chamber through which an outlet of a polymer stock discharge pipe through which the polymer stock solution contained in the polymer stock solution is discharged and an outlet of a water supply pipe supplying water are introduced;
A foam chamber provided in the chamber and divided by a partition wall so that an outlet of the polymer undiluted solution discharge pipe and an outlet of the water supply pipe are introduced at one side to form a foam by colliding with the discharged polymer undiluted solution and water to form a foam chamber;
Foam comprising a vortex chamber provided on the other side of the partition wall and having a polymer solution supply pipe through which the polymer solution mixed in the foam chamber flows through the partition wall, forms a vortex, and is mixed secondarily and discharged to the polymer solution storage tank In the liquid polymer dissolving device by,
The foam thread,
And a driving motor mounted on an outer side of the chamber;
It is mounted on the shaft of the drive motor and includes a pulsator in which stirring blades are arranged in a circumferential direction excluding a central portion;
A liquid polymer dissolving device by foam, characterized in that a polymer stock solution discharge pipe is further provided on a vertical line coincident with the axis of the driving motor, penetrating the chamber and the partition wall, and having a tip end thereof as a nozzle pipe.
The method of claim 2,
The distal end portion of the polymer stock solution discharge pipe further comprises an enlarged upper-gwang-low narrow shape including a nozzle pipe,
The liquid polymer dissolving apparatus by foam further comprising a guide provided to form a flow path in the circumferential direction of the nozzle pipe inside the tip portion.















delete

Images