KR20130118861A - Solid polymer separator - Google Patents

Abstract

The present invention provides a cylindrical screen 11 having a plurality of slits, a drive mechanism for rotating the screen 11 in the circumferential direction, a spiral guide plate provided on the inner circumferential surface of the screen 11, and an outer peripheral surface side of the screen 11. In this case, the casing 18 having a discharge port 182 on the lower side of the liquid ejection mechanism 16 (first liquid ejection mechanism) and at least the screen 11 provided toward the outer circumferential surface of the screen 11 is provided. It provides by the isolation | separation apparatus 1 for solid polymers with which it is equipped. According to this separation device for solid polymer (1), the solid polymer dispersed in the liquid can be separated from the liquid, there is no fear that metal is mixed in the solid polymer, and many liquids do not remain in the solid polymer, and further cleaning No adjustment or replacement is necessary or less frequent, eliminating the need to stop the manufacturing process continuously for a long time.

Description

Separation device for solid-phase polymers {SOLID POLYMER SEPARATOR}

The present invention relates to a means for separating a solid polymer dispersed in a liquid from the liquid.

In the fields of chemical industry, food industry, light industry and the like, there are many processes for separating solids (for example, particulate solids, etc.) dispersed in a liquid from the liquid and extracting the solid.

For example, in the chemical industry, the solvent is removed from the polymer by applying steam to the polymer (typically a polymeric material) dissolved in the solvent during the manufacture of the rubber product. The polymer was then broken up with a shredder to form a small mass of solid (solid polymer, called crumb). Here, the crumb (solid polymer) is dispersed in a boiling water heated in steam (in a liquid). The crumb is then separated from the hot water. The crumb taken out is further dehydrated and dried. After that, when the crumb is press molded, a block-like rubber material (intermediate product) is obtained.

In the manufacturing process of the rubber product, a fixed screen or a circulation driven screen is conventionally used to separate and extract the crumb from the hot water.

The fixed screen is, for example, a flat screen made of a wire mesh fixed obliquely with respect to a horizontal plane. On that flat screen, hot water containing dispersed crumbs is sent through the mesh of the flat screen. On the other hand, the crumb left on the flat screen falls from the inclined flat screen. In this way, the crumb can be separated from the hot water.

A circulation drive type screen is an endless track type screen formed by combining many metal plates (refer patent document 1). On a stepless tracked screen, hot water containing dispersed crumbs is sent, and the hot water passes through the gaps of the slits formed by the metal plate. On the other hand, the crumb left on the circulation driven screen is conveyed in a predetermined direction and is separated from the circulation driven screen. In this way, the crumb can be separated from the hot water.

Japanese Patent Laid-Open No. 6-304417

However, if the crumb is to be separated from the scalding using these fixed screens or circulating driven screens, the following problems to be improved are faced.

First, in a fixed screen, a small diameter crumb enters the mesh of a flat screen, and may remain and block the mesh. In this case, the separation effect of a boiling water falls, and a large amount of free water is supplied with a crumb to a subsequent dehydration and drying process. In this case, moisture is not removed from the crumb even by the dehydration or drying. And there exists a possibility that excessive moisture will be contained in the block-like rubber material which is an intermediate product.

In addition, new crumbs may adhere to the crumbs remaining in the mesh and grow in large chunks. And the big lump may be peeled off suddenly, and may be sent to a subsequent dehydration and drying process. In this case, conveyance defects may occur in the dehydration and drying process, and the process (production process) may be stopped. Moreover, since dehydration and drying defects are easy to occur, there exists a possibility that excessive moisture may be contained in the block-like rubber material which is an intermediate product finally.

The above-described problems are likely to occur depending on the specifications of the rubber product when the adhesiveness and cohesiveness of the polymer in the manufacturing process are high or when the crumb is made smaller in diameter. In order to solve these problems, countermeasures such as replacing the screen every 10 to 15 days are considered. However, this regular work is very laborious. In addition, since the process (production process) is stopped between these operations, the production efficiency of the intermediate product is lowered. In addition, in order to reduce the frequency of replacement of the screen, a countermeasure of performing high pressure cleaning every 15 to 30 minutes is also considered. However, this regular work also takes a lot of trouble.

In the circulation drive type screen, there are other problems as follows. First, since the metal plates forming the slits slide each other at the time of driving, there are many metal touches. Therefore, there is a possibility that the floating metal is unintentionally mixed in the crumb and further in the block-like rubber material which is an intermediate product.

In addition, with the use of the circulation driven screen, a plurality of metal plates constituting the endless track type screen are elongated, and each metal plate is unfair. Therefore, it is necessary to adjust tension and position regularly. Moreover, in the chain which is a component which drives an endless track type screen, component parts, such as a bush, may deteriorate by continuous use for a long time. And depending on the deterioration state, the replacement of component parts, such as an entire chain or a bush, is needed. These adjustment and replacement work requires not only the skill of the operator and a lot of time and labor, but also require a long time trial run. In addition, since the process (production process) is stopped between these operations and trial runs, the production efficiency of the intermediate product is lowered. And a metal touch also arises in a chain. For this reason, there exists a possibility that a floating metal may be inadvertently mixed in a crumb and also the block-like rubber material which is an intermediate product.

This invention is made | formed in view of such a situation, The part made into the subject is providing the means which can isolate | separate a crumb and a boiling water well, and can isolate | separate the solid polymer dispersed in the liquid from this liquid. In addition, there is no fear that metal may be mixed in the crumb (solid polymer), and much water (hot water, liquid) does not remain in the crumb (solid polymer), and therefore, the metal or excessive moisture may be contained in the block-like rubber material as an intermediate product. It is to provide a means without. Moreover, it is a means to provide a means for which operations such as washing, adjusting and replacing are unnecessary or less frequent and do not need to stop the manufacturing process continuously for a long time. As a result of repeated studies, the inventors have found that this problem is solved by the following means, and have completed the present invention.

That is, according to the present invention, an apparatus for separating a solid polymer dispersed in a liquid from the liquid is provided, and a cylindrical screen having a plurality of slits, a drive mechanism for rotating the screen (in the peripheral direction), and an inner peripheral surface of the screen There is provided a separating apparatus for a solid polymer comprising a guide plate provided, a first liquid ejecting mechanism provided on an outer circumferential surface of the screen, and a casing having a discharge port at the same time surrounding the screen and at least at the bottom thereof.

In the cylindrical screen, for example, a plurality of slits can be formed by arranging the wires to be arranged in parallel to reach the peripheral surface. The slit (wire gap) can be arbitrarily set according to the size of the solid polymer to be treated. In view of the washability of the screen, the slit is preferably 1 to 3 mm, particularly preferably 1.5 to 2.5 mm. It is particularly preferable that the shape of the screen is cylindrical. In this case, the drive mechanism rotates the screen in the circumferential direction.

The drive mechanism is configured by, for example, a drive source and a drive force transmission mechanism. Specifically, the motor (drive source), the sprocket connected to the motor, the drive tube provided to be connected to the inlet side of the cylindrical screen, the chain wound around the drive tube and its drive tube It can be composed of a roller (driving force transmission mechanism) installed. The sprocket connected to the electric motor rotates to rotate the drive chain and the screen by rotating the interlocking chain. By placing the drive tube and the screen on the rollers, the drive tube and the screen rotate smoothly.

The guide plate is provided from the inlet side to the outlet side of the cylindrical screen on the inner circumferential surface of the screen. This guide plate is preferably spiral. This spiral guide plate is a partition plate of a solid polymer to be treated, and grooves are formed. When providing the extension pipe mentioned later, it is preferable to provide a guide plate in the extension pipe. The guide plate is formed continuously or intermittently, but is preferably formed continuously. In the case where the guide plate is in a spiral shape, the number of baths thereof can be arbitrarily set according to the throughput (mass per hour) of the solid polymer to be treated and the supply of crumb to the subsequent dehydration and drying step. In view of the washability of the screen, the number of groups of the spiral guide plate is preferably 4 to 8, and particularly preferably 5 to 7. The height of the spiral guide plate can be arbitrarily set according to the throughput (mass per hour) of the solid polymer to be treated. In consideration of the washability of the screen, the height of the spiral guide plate is preferably 5 to 15 cm, particularly preferably 8 to 12 cm.

In this specification, the inlet side is a side into which the liquid to be treated and the solid polymer dispersed therein enter (injected). The outlet side is the side from which the treated (separated from liquid) polymer comes out (exhausted). In the present specification, the words inlet side and outlet side are used not only for the cylindrical screen but also for the whole separation device for solid polymer or elements other than the screen.

In the separation device for solid polymer according to the present invention, when the guide plate is spiral, the screen is rotated in a direction that is circumferential and conforms to the spiral direction of the guide plate. And the solid polymer dispersed in the liquid is continuously thrown from one opening (inlet) of the cylindrical screen. Then, the liquid passes through the slit and is discharged out of the system from the discharge port under the casing. On the other hand, the solid polymer is separated from the liquid and remains on the inner circumferential surface of the cylindrical screen. And solid polymer is discharged | emitted from the other opening (outlet) of a cylindrical screen at fixed intervals according to the guide of a spiral guide plate.

The first liquid ejecting mechanism is provided on the outer peripheral surface side of the screen toward the outer peripheral surface of the screen. This 1st liquid injection mechanism is attached to the upper side of a casing, for example so that an injection front end may become an upper side of the outer peripheral surface of a screen. From the first liquid ejecting mechanism, liquid can be injected onto the outer circumferential surface of the screen to prevent adhesion and aggregation of the solid polymer. Alternatively, the solid polymer attached in the same manner can be removed from the screen. The number of the first liquid ejection mechanisms can be arbitrarily set with respect to the (axial direction) length of the cylindrical screen. In view of the cleanliness of the screen, it is preferable to provide 3 to 15 pieces per 1 m length of the screen, particularly preferably 5 to 10 pieces per 1 m length of the screen.

In the separation device for solid polymer according to the present invention, it is preferable to include a second liquid jet mechanism provided on the outlet side of the cylindrical screen toward the upper side of the inner circumferential surface of the screen.

The second liquid ejecting mechanism is provided toward the upper side of the inner circumferential surface of the screen on the outlet side of the cylindrical screen. The second liquid ejecting mechanism is, for example, a support or a pipe so that the ejection tip is located above the inner circumferential surface of the screen, and the ejection opening is located at the center of the plane (circular) perpendicular to the axial direction near the exit of the cylindrical screen. Is attached by. From the second liquid jet mechanism, the liquid can be jetted above the inner circumferential surface of the screen to prevent adhesion and aggregation of the solid polymer. Alternatively, the solid polymer attached in the same manner can be removed from the screen. The number of the second liquid jetting mechanisms can be arbitrarily set with respect to the length (in the axial direction) of the cylindrical screen and the size (area) of the inner circumferential surface. In view of the washability of the screen, it is preferable to provide one to five, and particularly preferably to provide two to four.

In the separation device for solid polymer according to the present invention, it is preferable to include a third liquid jet mechanism provided above the inside of the casing toward the inner surface of the casing.

This third liquid ejection mechanism can be provided, for example, on the ceiling surface, which is the inner surface of the casing, or on each part (edge portion) where the ceiling surface and the side surface intersect so that the injection tip becomes the inner surface of the casing. From the third liquid injection mechanism, the liquid can be injected onto the inner surfaces of the casing (particularly, the ceiling surface and the upper side of the side surface) to prevent adhesion and aggregation of the solid polymer. Alternatively, the solid polymer attached in the same manner can be removed from the casing. The number of the third liquid injection mechanisms can be arbitrarily set with respect to the size (area of the inner surface) of the casing. In consideration of the washability of the inner surface of the casing, it is preferable to provide 4 to 16, and particularly preferably to install 8 to 14.

In the separation device for solid polymer according to the present invention, it is preferable to include a fourth liquid jet mechanism provided below the casing toward the inner surface of the casing.

This fourth liquid ejection mechanism can be provided at each portion (edge portion) where the bottom face and the side surface of the casing intersect, for example, so that the ejection tip is the inner surface of the casing. From the fourth liquid jetting mechanism, the liquid can be injected onto the inner surface of the casing (particularly, the bottom face and the lower side of the side face) to prevent adhesion and aggregation of the solid polymer. Alternatively, the solid polymer attached in the same manner can be removed from the casing. The number of the fourth liquid jetting mechanisms can be arbitrarily set with respect to the size of the casing (area of the inner surface (especially the bottom)). In view of the washability of the bottom of the casing, it is preferable to provide 4 to 10 pieces, and it is particularly preferable to provide 6 to 8 pieces.

In the separation device for solid polymer according to the present invention, an extension pipe provided to be connected to the outlet side of the cylindrical screen, and a fifth liquid jet mechanism provided toward the lower side of the inner circumferential surface of the extension pipe are provided at the outlet side of the cylindrical screen. It is preferable to provide.

For example, the fifth liquid jetting mechanism has a jetting port in the center of an axially perpendicular surface (circular) near the outlet of the tubular screen (i.e. near the extension tube) so that the injection tip is below the inner circumferential surface of the extension tube. Attached by support or pipe to position. From the fifth liquid ejecting mechanism, the liquid can be injected below the inner circumferential surface of the extension tube to prevent adhesion of the solid polymer. Moreover, by using cold water as a liquid, the solid polymer for the next process (dehydration, drying, etc.) can be cooled. The number of the fifth liquid injection mechanisms can be arbitrarily set with respect to the size (area) of the inner circumferential surface of the extension tube. In consideration of the washability of the extension pipe, it is preferable to provide 1 to 5 pieces, and it is particularly preferable to provide 2 to 4 pieces.

In the first liquid ejecting mechanism, the third liquid ejecting mechanism and the fourth liquid ejecting mechanism, the pressure of the liquid to be used (injected) is preferably higher in consideration of the respective cleaning properties. In consideration of the strength of the injection tip (screen, etc.) and the resistance to the rotation of the screen, the pressure of the liquid is preferably 1 to 7 MPa.

On the other hand, in the second liquid ejecting mechanism, the pressure of the liquid to be used (injected) is determined in consideration of the scattering of the crumb inside the screen, and the like. The same degree, high pressure is not necessary. The pressure of the liquid is preferably about 0.2 to 0.6 MPa.

In the first liquid ejecting mechanism, the second liquid ejecting mechanism, the third liquid ejecting mechanism and the fourth liquid ejecting mechanism, the temperature of the liquid to be used (injected) is determined by the hardness, viscosity, adhesion and cohesiveness of the solid polymer to be treated. It can set arbitrarily according to the temperature dependence of the physical property represented. In consideration of adhesion (or ease of peeling), the temperature of the liquid is preferably 50 to 95 ° C, particularly preferably 70 to 90 ° C.

On the other hand, in the fifth liquid ejecting mechanism, the pressure of the liquid to be used (injected) may be 0.1 to 0.6 MPa. Moreover, in the 5th liquid injection mechanism, it is preferable that the temperature of the liquid to be used (injected) is 5-40 degreeC, and it is especially preferable that it is 15-30 degreeC.

The first liquid ejecting mechanism, the second liquid ejecting mechanism, the third liquid ejecting mechanism, the fourth liquid ejecting mechanism and the fifth liquid ejecting mechanism are each composed of ejection nozzles connected to a liquid source having a pressure through a pipe, for example. do. The liquid source with pressure is, for example, a tank for storing the liquid and a pump for delivering the liquid, which may not be included in the configuration of the separation device for the solid polymer according to the present invention.

In the separation device for a solid polymer according to the present invention, it is preferable that the driving mechanism can adjust the rotational speed of the screen.

For example, the rotation speed of the screen can be arbitrarily controlled by arbitrarily adjusting the rotation speed of the drive source of the drive mechanism. Specifically, when the drive source of the drive mechanism is an electric motor, an inverter can be provided to adjust the rotational speed of the screen by frequency control or the like. The number of rotations of the screen can be arbitrarily set according to the size of the cylindrical screen (diameter if it is a cylindrical screen), the throughput (mass per hour) of the solid polymer to be treated, and the amount of water in the crumb at the outlet of the solid polymer separation device. have. Preferable rotation speed of the screen is 5 to 35 rpm, more preferably 12 to 28 rpm.

In the separation device for solid polymer according to the present invention, it is preferable to provide a dewatering plate between the screen and the casing. This dewatering plate prevents foreign matter from entering the system (inside) from the outside (outside) of the screen. More specifically, infiltration of foreign matter from the outside (the space where the roller flows) to the inside (the space where the separated hot water flows) between the drive portion of the casing (the space with the roller on the inlet side) and the separated hot water flows. It is preferable to have a dehydration plate to prevent. In addition, between the portion where the separated hot water flows and the space where the roller on the outlet side is provided, there is provided a dewatering plate that prevents intrusion of foreign matter from the outside (the space with the roller) to the inside (the space where the separated hot water flows). desirable. The foreign matter is, for example, a piece of roller shaved. The roller is a part constituting the driving force transmission mechanism.

In the separation device for solid polymer according to the present invention, the solid polymer is butadiene rubber, isoprene rubber, styrene butadiene rubber, styrene isoprene rubber, ethylene alpha -olefin copolymer rubber, ethylene alpha -olefin nonconjugated diene copolymer rubber, It is used preferably when it is a polymer chosen from the group of polymers which consist of a butyl rubber, a styrene butadiene styrene block copolymer, a hydrogenated styrene butadiene styrene block copolymer, butadiene resin, and an acrylic resin.

Next, according to this invention, the separation method of the solid polymer which isolate | separates the solid polymer dispersed in the liquid from the liquid using the above-mentioned separation apparatus for any one solid polymer is provided.

Next, according to the present invention, by using a polymerization step of polymerizing a monomer mixed with a solvent to obtain a polymer, a solvent removal step of removing a solvent from the polymer by applying a vapor, using any one of the above-described separation device for a solid polymer, A separation step of separating the solvent-free polymer from the hot water liquefied steam, a dehydration step and a drying step of further removing the water of the polymer separated from the hot water bath, and a molding step of molding the water-removed polymer into a predetermined shape. The manufacturing method of the rubber material which has is provided.

The separation device for solid polymer according to the present invention has a cylindrical screen having a plurality of slits, a driving mechanism for rotating the screen, and a guide plate provided on the inner circumferential surface of the screen. Therefore, when the solid polymer dispersed in the liquid is continuously introduced from one opening (inlet) of the cylindrical screen, the liquid (for example, hot water) passes through the slit and is discharged out of the system from the discharge port under the casing. On the other hand, the solid polymer (for example, crumb) is separated from the liquid and remains on the inner circumferential surface of the cylindrical screen, and is discharged from the other opening (outlet) of the cylindrical screen in a fixed quantity according to the guide plate guide. Then, the first liquid ejecting mechanism and the second liquid ejecting mechanism prevent adhesion and aggregation of the solid polymer on the outer circumferential surface and the inner circumferential surface of the screen. Alternatively, the solid polymer having the first liquid ejecting mechanism and the second liquid ejecting mechanism attached thereto is removed from the screen. Therefore, the slit of the screen is not blocked. Therefore, the effective filtration area does not decrease, so to speak, and the separation effect of the liquid (for example, hot water) does not decrease. Therefore, the solid polymer dispersed in the liquid can be satisfactorily separated from the liquid. There is no case where much water (liquid (for example, hot water)) remains in the solid polymer (for example, crumb) after the treatment. The final product (such as an intermediate block-like rubber material) does not contain excess moisture.

In the separation device for the solid polymer according to the present invention, the screen into which the solid polymer is introduced is only rotated. And, during its rotation, the solid polymer only moves from the inlet to the outlet according to the guidance of the guide plate. In the separation device (screen) for the solid polymer during the separation treatment, no metal touch occurs in the portion where the crumb or the liquid directly contacts. Among them, metal touch may occur, for example, when the drive mechanism of the screen is constructed such that a sprocket connected to an electric motor and a chain wound around the drive tube are engaged. However, the space in which the drive mechanism is located and the space in which the separated crumb and the liquid are located are blocked by the dehydrating plate or the like, respectively. Therefore, even in this case, no metal is mixed into the solid polymer (for example, crumb) after the treatment. Therefore, the final product (for example, a block-like rubber material which is an intermediate product) does not contain metal.

In the separation device for solid polymers according to the present invention, there are no parts requiring adjustment and replacement of chains and the like. For this reason, operations such as adjustment and replacement of these are unnecessary. Therefore, it is not necessary to stop a manufacturing process continuously for a long time, and it contributes to the improvement of the production efficiency of a product (for example, block-like rubber material which is an intermediate product).

In the separation device for solid polymer according to the present invention, the first liquid jet mechanism and the second liquid jet mechanism prevent adhesion and aggregation of the solid polymer on the outer and inner peripheral surfaces of the screen as described above. In addition, the separator for solid polymer according to the present invention is preferably provided with a third liquid jet mechanism and a fourth liquid jet mechanism. Then, these third liquid ejecting mechanisms and fourth liquid ejecting mechanisms prevent adhesion of the solid polymer on the inner surface (ceiling surface, side surface, and bottom surface) of the casing. And all of these liquid injectors can eject the liquid continuously during the separation process. In addition, when adhesion and aggregation of the solid polymer on the screen are prevented as described above, operations such as washing and adjusting are unnecessary or less frequent. Therefore, it is not necessary to stop a manufacturing process continuously for a long time, and it contributes to the improvement of the production efficiency of a product (for example, block-like rubber material which is an intermediate product).

The separation device for solid polymer according to the present invention is preferably provided with a fifth liquid jet mechanism provided on the outlet side of the cylindrical screen toward the lower side of the inner circumferential surface of the extension tube. For this reason, a liquid (for example, cold water) can be sprayed directly on a solid polymer, and the temperature of the crumb supplied to a subsequent dehydration and drying process can be adjusted accordingly.

In the separation device for a solid polymer according to the present invention, the solid polymer separated from the liquid and carried in accordance with the guide of the guide plate is directly directed to the next step. In addition, one end is attached to the inner surface (ceiling surface, side surface and bottom surface) of the screen or the casing, and the solid polymer removed by the first to fourth liquid ejecting mechanisms falls, and together with the liquid from the outlet of the lower side of the casing. Discharged. The discharged liquid and the solid polymer are recovered after performing the stationary separation, and then put into the separation device for the solid polymer according to the present invention. And again, in the separator for solid phase polymers according to the present invention, the solid phase polymer can be separated from the liquid. In this case, the solid polymer discharged out of the system is eliminated, and almost 100% of the recovery can be performed, contributing to the improvement of the production efficiency of the product (for example, a block rubber material that is an intermediate product). In addition, the liquid which originally disperse | distributed the solid polymer can also be reused as a liquid inject | pouring from a 1st liquid injection mechanism thru | or a 4th liquid injection mechanism. As such, the separation device for a solid polymer according to the present invention can be said to be an excellent device with low environmental load without making unnecessary waste.

1A is a diagram schematically showing an embodiment of one of the separation apparatus for a solid polymer according to the present invention, which is a front view through the inside.
FIG. 1B is a view schematically showing one embodiment of the separation device for a solid polymer according to the present invention, which is a plan view (top view) through which the inside is viewed. FIG.
1C is a diagram schematically showing one embodiment of the separation device for a solid polymer according to the present invention, which is a left side view through the inside.
FIG. 1D is a view schematically showing one embodiment of the separation device for a solid polymer according to the present invention, and is a right side view showing the inside.
FIG. 2A is a diagram schematically showing one embodiment of the separation device for a solid polymer according to the present invention, showing a cylindrical screen, an extension tube, and a driving tube connected thereto. FIG.
FIG. 2B is a diagram schematically showing one embodiment of the separation device for a solid polymer according to the present invention, showing a right side view showing only a cylindrical screen. FIG.
FIG. 2C is a diagram schematically showing one embodiment of the separation device for a solid polymer according to the present invention, showing a cylindrical screen and an extension tube. FIG.
FIG. 3 is a diagram schematically showing an embodiment of one of the separation apparatus for a solid polymer according to the present invention, and is a partial front view showing a part thereof (peripheral of a left end portion).
4 is a view schematically showing one embodiment of the separation device for a solid polymer according to the present invention, showing only a drive mechanism taken out and viewed from the left.
FIG. 5A is a diagram schematically showing one embodiment of the separation device for a solid polymer according to the present invention, showing the bottom surface of a casing. FIG.
FIG. 5B is a view showing an example of a conventional separator for solid polymers, and corresponds to FIG. 5A.
FIG. 6A is a diagram schematically showing one embodiment of the separation device for a solid polymer according to the present invention, showing a check hole provided on an inclined surface among ceiling surfaces of a casing. FIG.
FIG. 6B is a view showing an example of a conventional separator for solid polymers, and corresponds to FIG. 6A.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these and is not to be interpreted, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention. Can be added. For example, although the drawings show preferred embodiments of the present invention, the present invention is not limited to the aspects shown in the drawings or the information shown in the drawings. In carrying out or verifying the present invention, the same means or equivalent means as described herein can be applied, but preferred means are the means described below. In addition, as already mentioned above, FIGS. 1A-1D are views through which the inside was viewed, and the inside is also drawn by the solid line in these drawings. In addition, in FIG. 3, a part is projected and the projected part is also drawn by the solid line. In the separation device for a solid polymer according to the present invention, the position of each constituent member (element) thereof should be understood in view of all the drawings.

First, the structure of the separator for solid polymers according to the present invention will be described. The separating apparatus 1 for solid polymers shown to FIG. 1A-FIG. 4, FIG. 5A, and FIG. 6A is an apparatus which can separate the crumb (solid polymer) disperse | distributed in hot water (liquid) from its hot water.

The separator 1 for solid polymers comprises a screen 11, a drive mechanism 12, an extension tube 13, a guide plate 15, a liquid jet mechanism 16 (first liquid jet mechanism), a liquid jet mechanism 17 (2nd liquid injection mechanism), liquid injection mechanism 21 (third liquid injection mechanism), liquid injection mechanism 22 (4th liquid injection mechanism), liquid injection mechanism 23 (5th liquid injection mechanism), and A casing 18 is provided.

The screen 11 exhibits a cylindrical shape, and the peripheral surface thereof is formed by arranging and fixing (preferably) the wire 111 having a triangular cross section in a regular direction in the axial direction of the cylindrical screen 11. (See FIGS. 2A-2C). Then, a plurality of slits 112 for passing the boiling water are formed by the wire 111. The width (net) of this slit 112 is (preferably) 1.5 to 2.5 mm.

The drive mechanism 12 is a means for rotating the screen 11 in the circumferential direction S (refer FIG. 2B and FIG. 2C). The drive mechanism 12 includes an electric motor 121, a sprocket 141 connected to the electric motor, and a drive tube 123 provided to be connected to the inlet side (left side in FIGS. 1A and 2A) of the screen 11. And four rollers 122 provided in close contact with the chain 142 wound on the drive tube circumference and the drive tube 123 thereof (see FIG. 4). The sprocket 141 connected to the electric motor 121 and the chain 142 are engaged, and when the sprocket 141 fixed to it is rotated by rotating the electric motor 121, the sprocket 141 is engaged with the sprocket 141. The chain 142 and the drive tube 12 rotate, and the screen 11 connected to it rotates. The four rollers 122 support the drive tube 123, the screen 11, and the extension tube 13 so as to rotate smoothly. An inverter (for example) is provided in the circuit of the electric motor 121, and it is possible to adjust and change the rotation speed of the electric motor 121. FIG. This means that the rotation speed of the screen 11 can be adjusted (preferably) from 12 to 28 rpm.

The extension pipe 13 is connected to the outlet side of the cylindrical screen 11. This extension tube 13 shows the cylindrical shape of the same diameter as the screen 11, but is a cylindrical metal plate rather than the screen formed from wire.

The spiral guide plate 15 is continuously installed (for example) from the inlet side of the screen 11 to the outlet side and the extension tube 13 on the inner peripheral surface of the screen 11 and the extension tube 13 connected thereto. (See FIGS. 2A-2C). Grooves 151 are formed on the inner circumferential surfaces of the screen 11 and the extension tube 13 by the spiral guide plate 15. It is preferable that the number of groups of the spiral guide plate 15 is (preferably) 4 to 8, and the height H is (preferably) 5 to 15 cm, and is installed perpendicular to the screen (FIG. 2B and See FIG. 2C).

The casing 18 includes a screen 11, a driving mechanism 12, an extension tube 13, a guide plate 15, a liquid injection mechanism 16, a liquid injection mechanism 17, a liquid injection mechanism 21, a liquid injection mechanism. It encloses all the 22 and the liquid injection mechanisms 23, and has the inspection opening 181 on the upper side, and the discharge opening 182 on the lower side (refer FIG. 1A-1D). Further, the liquid jet mechanism 21 and the liquid jet mechanism 22 are attached to the inner surface of the casing 18. The ceiling surface of the casing 18 is formed so that a cross section may become trapezoid, and the inspection opening 181 is provided in the inclined surface (refer FIG. 1C and FIG. 1D). Moreover, the bottom face of the casing 18 is oblique and narrows in taper shape, and the discharge port 182 is provided in the terminal (refer FIG. 1A).

In the casing 18, the inspection opening 181 is formed so that the inner surface (the ceiling surface formed so that a cross section may become trapezoidal) of the casing 18 becomes flat (refer FIG. 6A). Therefore, adhesion and aggregation of a crumb can be prevented favorably by the injection flow 61 of the liquid injected from the injection nozzle 213 mentioned later. In the conventional aspect shown in FIG. 6B, only the inspection port 62 is provided so as to be recessed, and as a result, irregularities are formed on the inner surface of the casing. Then, in the liquid jet stream 61, the liquid may not be evenly sprayed on the inner surface of the casing (it may not be widely spread), and the attached crumb 63 may not be removed, but the check opening of the casing 18 ( 181) there is no such concern.

Moreover, between the space where the roller 122 of the inlet side (position of the drive tube 12 is arrange | positioned) of the casing 18, and the separated hot water flow part, and the outlet side of the casing 18 (extension pipe 13) Between the portion where the separated hot water flows in the position where it is disposed and the space where the roller 122 is located on the outlet side, respectively so as to intercept the inner side (the space where the separated hot water flows) from the outside (the space with the roller 122). The dewatering plate 131 is installed (see FIGS. 3 and 4). By this dehydration plate 131, invasion of foreign matter can be prevented from the outside into the system (the portion of the casing 18 where the water flows).

The liquid injection mechanism 16 is comprised from the piping 162 connected to the liquid source (not shown), and the injection nozzle 161 provided in it. The pipe 162 is provided in two rows (see FIGS. 1B to 1D) on the inclined upper side (of the outer circumferential surface) of the screen 11, and 8 to 14 injection nozzles 161 (preferably) are provided for each one of them. This is installed. The injection tip of the injection nozzle 161 is mainly the outer peripheral surface of the screen 11.

The liquid injection mechanism 17 is comprised from the piping 172 connected to a liquid source (not shown), and the injection nozzle 171 provided in the front-end (refer FIG. 1A and FIG. 1D). The piping 172 is the center of the surface (circle) perpendicular to the axial direction of the cylindrical screen 11 (extension pipe 13) from the upper side in the extension pipe 13 (near the exit of the screen 11). It is arranged to extend. Then, two injection nozzles 171 (for example) are provided at the center (at the front end of the pipe 172). The injection tips of the two injection nozzles 171 are all above the inner circumferential surface of the screen 11.

The liquid injection mechanism 21 is composed of a pipe 212 connected to a liquid source (not shown), an injection nozzle 211 and an injection nozzle 213 provided at the tip thereof (see FIGS. 1A to 1D). ). Four injection nozzles 211 are provided in the substantially center of the ceiling surface of the casing 18 so that it may face four directions (for example). The injection tips of the injection nozzles 211 are four sides of the casing 18. The spray nozzles 213 are installed in two rows (for example © ´) on the ceiling surface of the casing 18. The jet tip of the jet nozzle 213 is likely to cause adhesion of crumbs, and is directed to intensively clean the side surfaces (two surfaces) parallel to the screen.

The liquid injection mechanism 22 is comprised from the piping 222 connected to a liquid source (not shown), and the injection nozzle 221 provided in the front-end (refer FIG. 1A, FIG. 1B, and FIG. 5A). Four injection nozzles 221 are provided (for example) in each part (edge part) of the exit side (side of the extension pipe 13) as the bottom face of the casing 18. As shown in FIG. The injection tip of the injection nozzle 221 is the lower side and the bottom of the side surface of the casing 18. The four spray nozzles 221 of the liquid ejecting mechanism 22 are attached so that the ejection positions are misaligned, thereby preventing collision and mutual interference of the ejection streams 51 of the liquid and efficiently conveying the liquid to the bottom of the casing. It collides with the lower side of the side to prevent adhesion and aggregation of the crumbs. In the embodiment shown in FIG. 5B, the four injection nozzles 52 have the same injection position, and the jets of liquid 51 collide with each other to interfere with each other. In addition, since the hot water separated from the crumb on the screen 11 is largely separated from one side of the screen 11 (the screen 11 is rotated and the crumb is present), the flow of the hot water tends to incline to one side. Therefore, flow nonuniformity arises in the bottom face of a casing, and the crumb 53 peeled off from the grid of a screen or the crumb 53 peeled off from the wall surface tends to accumulate in the part where the flow is weak (low flow volume). On the other hand, if the liquid injecting mechanism 22 adjusts the ejection position of the liquid and has a structure in which the ejected liquids do not interfere with each other, this problem does not occur.

The liquid ejecting mechanism 23 is disposed at approximately the same position as the liquid ejecting mechanism 17. This liquid injection mechanism 23 is composed of a pipe 232 connected to a liquid source (not shown) and an injection nozzle 231 provided at its tip (see FIGS. 1A and 1D). In the extension pipe 13 (in the vicinity of the exit of the screen 11), the pipe 232 has a surface (circular) perpendicular to the axial direction of the cylindrical screen 11 (extension pipe 13) from the upper side. It is arranged to extend to the center. And one injection nozzle 231 (for example) is provided in the center (at the tip of the pipe 232). The injection tip of the injection nozzle 231 is lower than the inner peripheral surface of the extension pipe 13.

Next, the method of manufacturing the separator for solid polymer according to the present invention will be described taking the separator for solid polymer (1) as an example.

The separator 1 for a solid polymer can purchase and process a commercially available member and sheet metal, and can be obtained by granulating. Screen 11 (wire 111 and its fixing member), drive tube 123 of drive mechanism 12, extension tube 13, guide plate 15, liquid injection mechanisms 16, 17, 21, 22, 23 It is preferable that the material for forming the pipes and the spray nozzles) and the casing 18 (including the dewatering plate) are stainless steel. Specifically, it is SUS304, SUS316 (Japanese Industrial Standard). It is particularly preferable to use low carbon stainless steel. It is preferable to use the roller of the drive mechanism 12 containing the high strength resin material (engineering plastic). Specifically, MC nylon (registered trademark, polyamide resin) is mentioned.

Next, a description will be given by taking the case of butadiene ethylene in the rubber method according to the present invention as an example. In addition, the method of separating the solid polymer according to the present invention will also be described, taking the case where the separator 1 for solid polymer 1 is used as an example.

First, butadiene monomer (1,3-butadiene) is obtained. It is not only produced (as a byproduct) but also from ethylene by thermal decomposition of naphtha, which is usually extracted from crude oil. The butadiene monomer is mixed with a solvent such as toluene dehydrated or benzene, xylene, or the like, and further a nickel-based catalyst or another titanium, cobalt-based, neodymium-based, lithium-based catalyst is added to polymerize the butadiene polymer. Get After the addition of a polymerization terminator such as methanol and the necessary anti-aging agent, the solvent is removed by applying a vapor at 105 to 200 ° C.

The butadiene polymer is dispersed in a hot water derived from steam in a crumb (small lump) state. Thus, the butadiene polymer is separated from the hot water using the separator 1 for solid polymer. This separation rotates the screen 11 in a direction that corresponds to the helical direction of the guide plate 15 as the circumferential direction of the screen 11, and the inlet (drive tube) of the solid polymer separation device 1. From the side of (123), butadiene polymer dispersed in hot water can be thrown in continuously. The hot water then passes through the slit 112 and is discharged from the outlet 182 of the casing 18, while the butadiene polymer separates from the hot water and remains on the inner circumferential surface of the screen 11, guiding the spiral guide plate 15. According to the metering is transferred from the exit of the screen 11 (side of the extension tube 13) to the subsequent process.

Thereafter, the butadiene polymer is further dehydrated with a dehydration device, dried with a drying device, molded into a predetermined block shape with a press molding device (for example), and subjected to the required lapping to obtain a rubber material (intermediate product). .

≪ Industrial Availability >

The separation device for solid phase polymers according to the present invention is preferably used as a means for separating solid phase polymers dispersed in a liquid from the liquid in the manufacture of various rubber products.

DESCRIPTION OF SYMBOLS 1 Separation apparatus for solid polymers, 11: Screen, 12: Drive mechanism, 13: Extension tube, 15: Guide plate (spiral), 16: Liquid spray mechanism, 17: Liquid spray mechanism, 18: Casing, 21: Liquid spray mechanism 22: liquid jet mechanism, 23: liquid jet mechanism, 51: jet flow, 52: jet nozzle, 53: crumb, 61: jet flow, 62: check hole, 63: crumb, 111: wire, 112: slit, 121: Electric motor, 122: roller, 123: drive tube, 131: dewatering plate, 141: sprocket, 142: chain, 151: groove, 161: spray nozzle, 162: piping, 171: spray nozzle, 172: piping, 181: Checking port, 182: outlet, 211: injection nozzle, 212: piping, 213: injection nozzle, 221: injection nozzle, 222: piping, 231: injection nozzle, 232: piping.

Claims (10)

A device for separating solid polymer dispersed in a liquid from the liquid,
Cylindrical screen with multiple slits,
A drive mechanism for rotating the screen,
Guide plate is installed on the inner circumferential surface of the screen,
A first liquid ejecting mechanism provided on an outer peripheral surface side of the screen toward an outer peripheral surface of the screen, and
A casing which at least surrounds the screen and has an outlet at the bottom
Separation device for a solid polymer having a. The separation device for solid-state polymer according to claim 1, further comprising a second liquid jet mechanism provided on an outlet side of the cylindrical screen toward an upper side of an inner circumferential surface of the screen. The separation device for solid-state polymer according to claim 1 or 2, further comprising a third liquid injection mechanism provided above the inside of the casing toward the inner surface of the casing. The separation device for solid polymer according to any one of claims 1 to 3, further comprising a fourth liquid ejection mechanism provided below the casing toward the inner surface of the casing. The extension pipe according to any one of claims 1 to 4, which is provided to be connected to an outlet side of the cylindrical screen, and
Fifth liquid injection mechanism provided toward the lower side of the inner peripheral surface of the extension pipe at the exit side of the cylindrical screen.
Separation device for a solid polymer having a. Separation device according to any one of the preceding claims, wherein the drive mechanism is capable of adjusting the rotational speed of the screen. The separation device for solid polymer according to any one of claims 1 to 6, further comprising a dewatering plate provided between the screen and the casing to prevent foreign matter from entering the system from the outside of the screen. The said solid polymer is a butadiene rubber, an isoprene rubber, a styrene butadiene rubber, a styrene isoprene rubber, an ethylene-alpha-olefin copolymer rubber, ethylene-alpha-olefin, nonconjugated in any one of Claims 1-7. Separation device for solid-state polymers which is a polymer selected from the group consisting of a diene copolymer rubber, a butyl rubber, a styrene butadiene styrene block copolymer, a hydrogenated styrene butadiene styrene block copolymer, a butadiene resin and an acrylic resin. A method for separating a solid polymer, wherein the solid polymer dispersed in the liquid is separated from the liquid by using the separation device for solid polymer according to any one of claims 1 to 8. A polymerization step of polymerizing a monomer mixed with a solvent to obtain a polymer,
A solvent removal process of removing the solvent from the polymer by applying steam,
A separation step of separating the polymer from which the solvent is removed using the separation device for solid polymer according to any one of claims 1 to 8, from the hot water in which the vapor is liquefied,
A dehydration process and a drying process for further removing water of the polymer separated from the hot water, and
Molding process for molding the moisture-removed polymer into a predetermined shape
Method for producing a rubber material having a.

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