JP5369442B2 - Resin dispersion continuous coagulation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous process for coagulation of resin dispersion, which can continuously coagulate even resin dispersion such as rubber latex without problems, resulting in resin coagulated particles having sizes within a given range. <P>SOLUTION: According to the present process for continuous coagulation of a resin dispersion, in a step for production of fat-coagulated particles, a resin dispersion and a coagulation solution are stirred and mixed by a comminuting blade 32 in a comminution space SPc, while the coagulated resin produced by stirring and mixing of the resin dispersion and the coagulation solution is comminuted with the comminuting blade, to sequentially produce resin coagulated particles having sizes within a defined range, which are continuously fed into a shear space sPs. Further, in a shear step, the resin coagulated particles are continuously delivered into an emission space SPe, while applying shear force onto the resin coagulated particles by fluid delivery blades 34a, 34b, 34c and a fixed blade 111 in the shear space. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a method for producing a resin coagulated granule having a size within a predetermined range by continuously coagulating a resin dispersion such as an emulsion or a suspension.

In the past, “the resin dispersion liquid and the coagulation liquid are guided to the inner space of the cylindrical outer shell at a certain ratio, and the resulting resin coagulation is mixed with a stirring rod to which a plurality of stirring blades are attached, A method for continuously producing resin agglomerated particles in a predetermined range by shearing with a fixed blade extending from the inner peripheral surface of the outer shell to the space between the stirring blades toward the inner side of the outer shell '' (For example, refer to Patent Document 1).
JP-A-57-14639

  However, when the rubber latex is coagulated using the above-described method to obtain rubber coagulated particles, the rubber latex becomes a soft large mass near the inlet of the coagulator, and the mass is mixed with the stirring blade and the outer shell. There is a problem of clogging.

  An object of the present invention is to provide a resin dispersion continuous coagulation method capable of continuously coagulating without problems even in the case of a resin dispersion such as rubber latex to obtain resin coagulation granules having a size within a predetermined range. Is to provide.

  The resin dispersion continuous coagulation method according to the first invention includes a resin coagulation particle production process and a shearing process. In the resin coagulated particle production process, the resin dispersion liquid is supplied at the first flow rate through the first passage to the pulverization space where the pulverization blades are disposed, and at the same time, the coagulation liquid is supplied at the second flow rate through the second passage. In the pulverization space, the resin dispersion liquid and the coagulation liquid are stirred and mixed by the pulverization blade, and at the same time, the resin coagulate formed by the stirring and mixing of the resin dispersion liquid and the coagulation liquid is pulverized by the pulverization blade and within a predetermined range. Resin agglomerated particles having a size are sequentially produced, and the resin agglomerated particles are continuously delivered to the shearing space. Note that the shearing space is adjacent to the grinding space. In addition, the “wing” referred to here means one having a plurality of blades attached around the axis. In the shearing process, resin coagulation is performed by a plurality of fluid conveying blades arranged in the shearing space and sending resin coagulated particles to the discharge space, and fixed blades extending from the cylindrical wall forming the shearing space toward the axis of the cylindrical wall. The resin coagulated particles are continuously sent to the discharge space while a shearing force is applied to the particles. The discharge space is adjacent to the shearing space and does not communicate with the grinding space. Moreover, it is preferable that the rotation axis of the fluid conveying blade is on an extension line of the rotation shaft of the grinding blade.

  In this resin dispersion continuous coagulation method, the resin coagulate produced by stirring and mixing the resin dispersion and coagulation liquid in the pulverization space is pulverized by the pulverization blade, and the resin coagulation granules having a size within a predetermined range. Are sequentially manufactured, and then the resin coagulated particles are continuously delivered to the discharge space while a shear force is applied to the resin coagulated particles by the fluid conveying blade and the fixed blade in the shear space. In other words, in this resin dispersion continuous coagulation method, the resin coagulation body is made into resin coagulation particles having a size within a predetermined range by the pulverization blade and then sent to the shearing space. Therefore, if this resin dispersion continuous coagulation method is used, even a resin dispersion such as rubber latex can be coagulated continuously without problems to obtain resin coagulated particles having a size within a predetermined range. Can do. Further, in this resin dispersion continuous coagulation method, the resin coagulation granules produced in the pulverization space are sheared in the shearing space. For this reason, if this resin dispersion continuous coagulation method is utilized, an uncoagulated component can be decreased sequentially.

  The “rubber latex” mentioned here may be a synthetic rubber latex or a natural rubber latex. Examples of the rubber latex include silicone rubber latex, ethylene propylene rubber latex, acrylonitrile butadiene rubber latex, styrene butadiene rubber latex, chloroprene rubber latex, acrylic rubber latex, butyl rubber latex, and fluorine rubber latex.

  In addition, the “coagulation liquid” referred to here is, for example, sulfuric acid aqueous solution, hydrochloric acid aqueous solution, nitric acid aqueous solution, aluminum sulfate aqueous solution, aluminum chloride aqueous solution, magnesium chloride aqueous solution, magnesium sulfate aqueous solution, calcium chloride aqueous solution, ammonium chloride aqueous solution, sodium nitrate aqueous solution. , Potassium alum aqueous solution, PAC (polyaluminum chloride) aqueous solution and the like. Of these, an aqueous aluminum sulfate solution is particularly preferred.

  The resin dispersion continuous coagulation method according to the second invention is the resin dispersion continuous coagulation method according to the first invention, wherein local stirring blades are arranged in the space between the fluid conveying blades. The local stirring blade has a rotating shaft and a plurality of blades. The rotation axis is on an extension line of the rotation axis of the fluid conveying blade. The blades extend along a plane including the rotation axis. The shearing force is generated by the fluid conveying blade, the local stirring blade, and the fixed blade.

  For this reason, if this resin dispersion continuous coagulation method is used, the resin coagulation particles are prevented from adhering to the shaft portion between the fluid conveying blades, and the resin coagulation particles have good shearing force. Can be added.

  The resin dispersion continuous coagulation method according to the third invention is the resin dispersion continuous coagulation method according to the first invention or the second invention, further comprising a backflow generation step. In the backflow generation process, in the backflow space where the backflow generation blade is provided, the coagulated liquid sent through the third passage is sent to the discharge space by the backflow generation blade. Note that the backflow generating blade has a rotating shaft that is on an extension of the rotating shaft of the grinding blade. And this backflow generation | occurrence | production blade | wing produces | generates the fluid flow of the direction opposite to the flow direction of a resin coagulation granule. As a result, the resin coagulated particles flowing from the shearing space into the discharge space and the coagulating liquid flowing from the backflow space into the discharge space are mixed and discharged out of the system from the discharge space.

  For this reason, if this resin dispersion continuous coagulation method is utilized, when there is a rear wall in the backflow space, it is possible to prevent the resin coagulated particles from adhering to the rear wall. Further, if this resin dispersion continuous coagulation method is used, it is possible to prevent the resin coagulated particles from entering the drive mechanism when the blade drive mechanism exists after the backflow space.

  The resin dispersion continuous coagulation method according to the fourth invention is the resin dispersion continuous coagulation method according to any of the first to third inventions, wherein the pulverization blade has a plurality of blades. The blades extend in the outer circumferential direction of the shaft from the shaft end existing in the shearing space toward the grinding space. Further, the blade is attached to the shaft so as to be inclined at a predetermined angle with respect to the radial direction of the shaft when viewed along the longitudinal direction of the shaft. In other words, it is held on the opposite side of the grinding blade.

  For this reason, in this resin dispersion continuous coagulation method, the pulverization blade contributes to the delivery of the resin coagulated particles from the pulverization space to the shearing space. Therefore, if this resin dispersion continuous coagulation method is used, the resin coagulated particles can be smoothly sent from the pulverization space to the shearing space. Further, in this resin dispersion continuous coagulation method, there is no non-displacement such as a shaft portion in the grinding space. Therefore, if this resin dispersion continuous coagulation method is used, even if the resin coagulated particles have adhesiveness, the risk of the resin coagulated particles adhering to the pulverization blade is reduced. Can do.

  The resin dispersion continuous coagulation method according to the fifth invention is the resin dispersion continuous coagulation method according to the fourth invention, wherein a grinding auxiliary blade is attached to the shaft at a position adjacent to the grinding blade. . The grinding auxiliary blade has a plurality of blades. The vanes extend along a plane that includes the axis of the shaft.

  For this reason, in this resin dispersion continuous coagulation method, the residence time of the resin coagulated particles in the pulverization space becomes longer than in the case without the pulverization auxiliary blade. Therefore, if this resin dispersion continuous coagulation method is utilized, the resin coagulation can be pulverized well.

  If the resin dispersion continuous coagulation method according to the first invention is used, even if the resin dispersion is a rubber latex, the resin coagulation particles having a predetermined range of size can be coagulated without problems. Can be obtained. Further, in this resin dispersion continuous coagulation method, the resin coagulation granules produced in the pulverization space are sheared in the shearing space. For this reason, if this resin dispersion continuous coagulation method is utilized, an uncoagulated component can be decreased sequentially.

  If the resin dispersion continuous coagulation method according to the second invention is used, the resin coagulation particles can be well sheared while preventing the resin coagulation particles from adhering to the shaft portion between the fluid conveying blades. You can apply power.

  If the resin dispersion continuous coagulation method according to the third invention is used, it is possible to prevent the resin coagulation particles from adhering to the rear wall when there is a rear wall in the backflow space. Further, if this resin dispersion continuous coagulation method is used, it is possible to prevent the resin coagulated particles from entering the drive mechanism when the blade drive mechanism exists after the backflow space.

  If the resin dispersion continuous coagulation method according to the fourth aspect of the invention is used, the resin coagulated particles can be smoothly sent from the pulverization space to the shearing space. Further, in this resin dispersion continuous coagulation method, there is no non-displacement such as a shaft portion in the grinding space. Therefore, if this resin dispersion continuous coagulation method is used, even if the resin coagulated particles have adhesiveness, the risk of the resin coagulated particles adhering to the pulverization blade is reduced. Can do.

  If the resin dispersion continuous coagulation method according to the fifth aspect of the invention is used, the resin coagulate can be pulverized satisfactorily.

  A resin dispersion continuous coagulation apparatus 1 according to an embodiment of the present invention is an apparatus for coagulating a resin dispersion, particularly rubber latex, to produce resin coagulation particles having a size within a predetermined range. As shown in FIGS. 1, 2, and 3, the casing 10, the stirring rod 30, the seal mechanism 50, and the drive mechanism 70 are mainly provided. Details of these components will be described in detail below.

<Constituent elements of resin dispersion continuous coagulation device>
(1) Casing As shown in FIGS. 1 and 2, the casing 10 mainly includes a main body 11, a lid 12, a resin dispersion supply pipe 13, a coagulation liquid supply pipe 14, and a resin coagulation particle discharge. It consists of a tube 15. In the casing 10, the axes of the main body 11 and the resin coagulated particle discharge pipe 15 are parallel to the horizontal plane (that is, the axes of the main body 11 and the resin coagulated particle discharge pipe 15 are orthogonal to the vertical direction. ) And the coagulating liquid supply pipe 14 is installed so as to face upward.

  As shown in FIGS. 1 and 2, the main body 11 is a cylindrical member, and is configured by detachably connecting three cylindrical members 11a, 11b, and 11c. Hereinafter, for convenience of explanation, the cylindrical member 11a to which the lid portion 12 is attached is referred to as a “first cylindrical member”, and the cylindrical member 11b located at the center is referred to as a “second cylindrical member”, and resin coagulated particles. The cylindrical member 11c to which the body discharge pipe 15 is attached is referred to as a “third cylindrical member”. And these cylindrical members 11a, 11b, and 11c are connected by the flange 113 (refer FIG. 3). Further, the connecting portions of the cylindrical members 11a, 11b, and 11c are sealed by a seal ring 112 as shown in FIG. In the main body 11, the position corresponding to the grinding auxiliary blade 33 (described later) and the local stirring blades 36 a, 36 b, 36 c (described later) and the backflow auxiliary blade 37 in a state where the stirring rod 30 is attached to the drive shaft 71. A fixed blade 111 is formed at a position corresponding to between a later-described flow generation blade 38 (described later). As shown in FIG. 1, five sets of fixed blades 111 are formed along the axial direction of the main body 11, and four blades are prepared for each set as shown in FIG. And this fixed blade | wing 111 is a flat blade | wing, Comprising: As FIG. 3 shows, the 1st surface containing the axis | shaft of the main-body part 11 and the axis | shaft orthogonal to the 1st surface including the axis | shaft of the main-body part 11 are shown. It extends from the inner peripheral surface of the main body part 11 toward the axis of the main body part 11 along the two surfaces.

  As shown in FIGS. 1 and 2, the lid 12 is a disc body having an outer diameter substantially the same as the outer diameter of the main body 11, and covers the opening at the first end of the main body 11. The lid portion 12 is formed with an insertion hole for fitting the resin dispersion supply pipe 13 substantially at the center. Moreover, the connection part of this cover part 12 and the 1st cylindrical member 11a is sealed by the seal ring 112, as FIG. 1 shows.

  The resin dispersion supply pipe 13 is for guiding the resin dispersion stored in a resin dispersion tank (not shown) to the internal space SP of the main body 11, and as shown in FIGS. It is welded to the lid portion 12 while being fitted in an insertion hole formed at substantially the center of the portion 12.

  The coagulating liquid supply pipe 14 is for guiding the coagulating liquid stored in a coagulating liquid tank (not shown) to the internal space SP of the main body 11, and as shown in FIG. 1 and FIG. It is provided through the side wall of the end portion on the first end side of the portion 11. The coagulating liquid supply pipe 14 is welded to the first cylindrical member 11 a of the main body 11.

  The resin coagulated particle discharge pipe 15 is for discharging the resin coagulated particles generated in the internal space SP of the casing 10 to the outside of the system. As shown in FIGS. 1 and 2, the main body 11 Is provided through the side wall at a position slightly before the second end opposite to the first end. The resin coagulated particle discharge pipe 15 is perpendicular to the axis of the coagulation liquid supply pipe 14 when viewed along the axis of the main body 11. The resin coagulated particle discharge pipe 15 is welded to the third cylindrical member 11 c of the main body 11.

(2) Stirring bar As shown in FIG. 4, the stirring bar 30 mainly includes a shaft 31, a crushing blade 32, a crushing auxiliary blade 33, three fluid conveying blades 34 a, 34 b, 34 c, a shear blade 35, It comprises local stirring blades 36a, 36b, 36c, a backflow auxiliary blade 37 and a backflow generating blade 38. Hereinafter, for convenience of explanation, the fluid conveyance blade 34a on the pulverization blade side is referred to as “first fluid conveyance blade”, the fluid conveyance blade 34b located in the center is referred to as “second fluid conveyance blade”, and the fluid on the backflow generation blade side is referred to. The conveying blade 34c is referred to as a “third fluid conveying blade”, the local stirring blade 36a on the pulverization blade side is referred to as a “first local stirring blade”, and the local stirring blade 36b located in the center is referred to as a “second local stirring blade”. The local stirring blade 36c on the backflow generating blade side is referred to as a “third local stirring blade”.

  As illustrated in FIG. 4, the shaft 31 is a cylindrical bar. The shaft 31 is formed with a pin receiving hole (not shown) for connecting to the drive shaft 71 of the drive mechanism 70 at the end on the first end side.

  As shown in FIG. 5, the pulverization blade 32 includes four blades 321. And these blade | wings 321 are flat blade | wings, and go to the 1st end from the outer periphery of the part of the 2nd end side opposite to the 1st end of the shaft 31 from the 2nd end of the shaft 31 as a base point. It extends toward the outer circumferential direction as it goes in the opposite direction. Further, as shown in FIG. 5, these blades 321 are evenly arranged along the outer periphery of the shaft 31 when viewed along the axis of the shaft 31, and include a 21st shaft including the axis of the shaft 31. The surface and the axis of the shaft 31 are formed so as to be inclined by 90 ° with respect to the 22nd surface orthogonal to the 21st surface.

  As shown in FIG. 6, the grinding auxiliary wing 33 is composed of four blades 331. The blade 331 is a flat blade, and extends outward from the outer peripheral surface of the shaft 31 along a thirty-first surface including the axis of the shaft 31 and a thirty-second surface including the axis of the shaft 31 and orthogonal to the thirty-first surface. It extends. Further, the blade 331 is formed so as to protrude toward the first end side in the axial direction of the shaft 31. Further, the grinding auxiliary blade 33 is provided adjacent to the grinding blade 32 as shown in FIG.

  As shown in FIG. 4, the fluid conveying blades 34a, 34b, and 34c are arranged at equal intervals along the axial direction of the shaft 31 in the region on the second end side from the center of the shaft 31, and are shown in FIG. As shown in the figure, each of the blades 341 is composed of three blades 341. The blades 341 are flat blades that intersect at an angle of 45 ° with respect to the axis of the shaft 31 as shown in FIG. 4, and are evenly distributed along the outer periphery of the shaft 31 as shown in FIG. 7. Has been placed.

  As shown in FIG. 4, the shear blade 35 is positioned near the third local stirring blade 36 c between the third local stirring blade 36 c and the backflow auxiliary blade 37, and as shown in FIG. It is composed of a single blade 351. As shown in FIG. 8, the blade 351 is a flat blade, and the shaft 31 extends along a 51st surface including the axis of the shaft 31 and a 52nd surface including the axis of the shaft 31 and orthogonal to the 51st surface. It extends toward the outside from the outer peripheral surface.

  As shown in FIG. 4, the local agitating blades 36a, 36b, and 36c are provided between the first fluid conveying blade 34a and the second fluid conveying blade 34b, and between the second fluid conveying blade 34b and the third fluid conveying blade 34c. And between the third fluid conveying blade 34c and the shear blade 35, each of which is composed of four blades 361 as shown in FIG. As shown in FIG. 9, the blade 361 is directed outward from the outer peripheral surface of the shaft 31 along a 61st surface including the axis of the shaft 31 and a 62nd surface including the axis of the shaft 31 and orthogonal to the 61st surface. It extends. The blade 361 has a length shorter than that of the fluid conveying blades 34a, 34b, 34c. The 61st surface is a surface that matches the 51st surface, and the 62nd surface is a surface that matches the 52nd surface.

  As shown in FIG. 4, the backflow auxiliary blade 37 is located near the backflow generating blade 38 between the shear blade 35 and the backflow generating blade 38, and as shown in FIG. And a baffle plate 372. As shown in FIG. 10, the blade 371 is a flat blade, and the shaft 31 extends along a 71st surface including the axis of the shaft 31 and a 72nd surface including the axis of the shaft 31 and orthogonal to the 71st surface. It extends toward the outside from the outer peripheral surface. The 71st surface is a surface that matches the 51st surface, and the 72nd surface is a surface that matches the 52nd surface. As shown in FIG. 10, the baffle plate 372 is an annular plate and extends from the outer peripheral surface of the shaft 31 to the central portion of the blade 371. Further, as shown in FIG. 4, the baffle plate 372 is formed so as to intersect the central portion of the blade 371 when viewed along a direction orthogonal to the axis of the shaft 31.

  The reverse flow generating blade 38 is a blade that creates a fluid flow in a direction opposite to that of the fluid conveying blades 34a, 34b, and 34c, and is positioned at the end portion of the shaft 31 on the first end side as shown in FIG. . And this backflow generation | occurrence | production blade | wing 38 is comprised from the two blade | wings 381, as FIG.11 and FIG.12 shows. As shown in FIG. 12, the blade 381 is a blade that curves as it goes outward from the outer periphery of the shaft 31, and is formed so as to face the shaft 31.

  As shown in FIG. 1, the stirring rod 30 is accommodated in the casing 10 such that the axis of the shaft 31 coincides with the axis of the main body 11 of the casing 10, and the drive mechanism 70 is connected via the seal mechanism 50. Connected to the drive shaft 71. In the state where the stirring rod 30 is accommodated in the casing 10 as described above, the internal space SP in which the pulverization blade 32 is accommodated is referred to as a “pulverization space SPc”. The internal space SP in which the blade 35 and the local stirring blades 36a, 36b, and 36c are accommodated is referred to as “shear space SPs”, and the internal space SP between the shear blade 35 and the backflow auxiliary blade 37 is referred to as “discharge space SPe”. The internal space that houses the backflow auxiliary blade 37 and the backflow generation blade 38 is referred to as a “backflow space SPr”.

(3) Seal mechanism The seal mechanism 50 separates the internal space SP from the drive mechanism 70 so that the liquid flowing into the internal space SP of the casing 10 does not enter the drive mechanism 70 through the drive shaft 71. The seal mechanism 50 is provided with a coagulation liquid passage on the side of the drive shaft 71, and the coagulation liquid flowing in the coagulation liquid passage is sent to the discharge space SPe by the backflow generating blade 38.

(4) Drive mechanism The drive mechanism 70 is, for example, an electric motor or an internal combustion engine, and rotates the drive shaft 71.

<Manufacture of resin coagulated particles using a resin dispersion continuous coagulator>
First, the drive shaft 71 is rotated by the drive mechanism 70 to rotate the stirring rod 30. Then, the resin dispersion is supplied to the resin dispersion supply pipe 13 at a predetermined flow rate and sent to the pulverization space SPc. At the same time, the coagulation liquid is supplied to the coagulation liquid supply pipe 14 at a predetermined flow rate to pulverize the coagulation liquid. Send to space SPc. Then, in the pulverization space SPc, the resin dispersion liquid and the coagulation liquid flowing in by the pulverization blade 32 are agitated and mixed, and at the same time, the resin agglomerate generated by the agitation and mixing of the resin dispersion liquid and the coagulation liquid is the pulverization blade 32. Is crushed by. As a result, resin coagulated particles having a size within a predetermined range are continuously produced in the pulverization space SPc. The resin coagulated particles are sent to the shear space SPs by riding on a fluid flow (hereinafter referred to as “transport direction flow”) generated mainly by the fluid transport blades 34a, 34b, and 34c. In the shear space SPs, the resin coagulated particles and the unaggregated components flow in the transport direction flow to the discharge space SPe, and the fluid transport blades 34a, 34b, 34c and the local stirring blades 36a, 36b, 36c. And a shearing force is applied by the fixed blade 111. As a result, the amount of unaggregated components decreases and the shape of the resin agglomerated particles is adjusted. The resin agglomerated particles that have reached the discharge space SPe by riding in the flow in the conveyance direction are caused by the flow in the conveyance direction and the flow in the reverse conveyance direction generated in the reverse flow space SPr by the backflow generation blade 38. 15 is pushed out.

<Features of continuous coagulation equipment for resin dispersion>
(1)
In the resin dispersion continuous coagulation apparatus 1 according to the present invention, a resin dispersion that flows at a predetermined flow rate through the resin dispersion supply pipe 13 and a flow at a predetermined flow rate through the coagulation liquid supply pipe 14. At the same time, the coagulating liquid is stirred and mixed by the pulverization blade 32 in the pulverization space SPc, and at the same time, the resin agglomerate generated by the stirring and mixing is pulverized by the pulverization blade 32 and the resin coagulation having a size within a predetermined range. Granules are produced sequentially. Thereafter, the resin coagulated particles are continuously sent to the discharge space SPe while the shear force is applied to the resin coagulated particles in the shear space SPs. That is, in this resin dispersion continuous coagulation apparatus 1, the resin coagulated material is made into resin coagulated particles having a size within a predetermined range by the pulverization blade 32 and then sent to the shearing space SPs. Therefore, in this resin dispersion continuous coagulation apparatus 1, even a resin dispersion such as rubber latex coagulates continuously without problems such as clogging, and resin coagulation granules having a predetermined size range are obtained. It is done. Further, in the resin dispersion continuous coagulation apparatus 1, the resin coagulation granules produced in the pulverization space SPc are sheared in the shear space SPs. For this reason, in this resin dispersion continuous coagulation apparatus 1, uncoagulated components are sequentially reduced.

(2)
In the resin dispersion continuous coagulation apparatus 1 according to the present invention, between the first fluid conveyance blade 34a and the second fluid conveyance blade 34b, between the second fluid conveyance blade 34b and the third fluid conveyance blade 34c, and the first. Local stirring blades 36 a, 36 b, and 36 c are formed on the shaft 31 between the three-fluid conveying blade 34 c and the shearing blade 35. For this reason, in this resin dispersion continuous coagulation apparatus 1, resin coagulated particles adhere to the shaft portions between the fluid conveying blades 34a, 34b, 34c and between the third fluid conveying blade 34c and the shear blade 35. The shearing force is applied to the resin coagulated particles well while being prevented.

(3)
In the resin dispersion continuous coagulation apparatus 1 according to the present invention, the coagulation liquid sent through the seal mechanism 50 in the backflow space SPr is sent to the discharge space SPe by the backflow generation blade 38. As a result, the resin coagulated particles flowing from the shearing space SPs into the discharge space SPe and the coagulant liquid flowing into the discharge space SPe from the backflow space SPr are mixed together to form the resin coagulated particle discharge pipe from the discharge space SPe. 15 is discharged out of the system.

  For this reason, in this resin dispersion continuous coagulation apparatus 1, resin coagulation particles are prevented from adhering to the opposite wall of the lid portion 12 of the main body portion 11, and the resin coagulation on the drive mechanism 70 is performed. Intrusion of granules is prevented.

(4)
In the resin dispersion continuous coagulation apparatus 1 according to the present invention, the blades 321 of the pulverizing blades 32 go from the outer periphery of the portion on the second end side of the shaft 31 to the first end with the second end of the shaft 31 as a base point. It forms so that it may extend toward an outer peripheral direction as it goes to the opposite direction of a direction. Further, as shown in FIG. 5, the blades 321 are evenly arranged along the outer periphery of the shaft 31 when viewed along the axis of the shaft 31, and the 21st surface including the axis of the shaft 31. , And the axis of the shaft 31 is formed so as to be inclined by 90 ° with respect to the 22nd surface orthogonal to the 21st surface. For this reason, in this resin dispersion continuous coagulation apparatus 1, the pulverization blade 32 contributes to the delivery of the resin coagulated particles from the pulverization space SPc to the shear space SPs. Therefore, in this resin dispersion continuous coagulation apparatus 1, the resin coagulation particles are smoothly sent out from the pulverization space SPc toward the shear space SPs. In the pulverization space SPs, there is no non-displaceable object such as a shaft. Therefore, in this resin dispersion continuous coagulation apparatus 1, the possibility that the resin coagulation particles adhere to the pulverization blade 32 is reduced even when the resin coagulation particles have adhesiveness.

(5)
In the resin dispersion continuous coagulation apparatus 1 according to the present invention, a grinding auxiliary blade 33 is attached at a position adjacent to the grinding blade 32 of the stirring rod 30. For this reason, in this resin dispersion continuous coagulation apparatus 1, the time for the resin coagulated particles to stay in the pulverization space SPc becomes longer. Therefore, in this resin dispersion continuous coagulation apparatus 1, the resin coagulation can be pulverized well.

(6)
In the resin dispersion continuous coagulation apparatus 1 according to the present invention, the stirring rod 30 is held at the downstream side in the fluid flow direction and connected to the drive shaft 71. For this reason, in this resin dispersion continuous coagulation apparatus 1, the resin dispersion supply pipe 13 and the coagulation liquid supply pipe 14 are arranged more than those in which the stirring rod 30 is supported on the upstream side and the downstream side in the fluid flow direction. High degree of freedom. Therefore, in the resin dispersion continuous coagulation apparatus 1, the state at the start of stirring and mixing of the resin dispersion and the coagulation liquid is easily controlled.

(7)
In the resin dispersion continuous coagulation device 1 according to the present invention, three cylindrical members 11a, 11b, and 11c are detachably connected to constitute a main body portion 11. Moreover, in the resin dispersion continuous coagulation apparatus 1, the stirring rod 30 and the drive shaft 71 can be easily removed. For this reason, in this resin dispersion continuous coagulation apparatus 1, the casing can be easily disassembled during product changeover or maintenance. Therefore, a cleaning worker, a maintenance worker, etc. can simply wash or maintain the resin dispersion continuous coagulation apparatus 1.

<Modification>
(A)
In the resin dispersion continuous coagulation apparatus 1 according to the previous embodiment, the stirring rod 30 as shown in FIG. 4 is adopted, but instead of this, a stirring rod 30A as shown in FIG. 13 is adopted. May be. The stirring bar 30A is the same as the stirring bar 30 according to the previous embodiment except for the pulverizing blade 32A. Further, the pulverizing blade 32A according to this modification is the same as the pulverizing blade 32 according to the previous embodiment, except that the blade 321A has an L-shaped shape.

(B)
In the previous embodiment, the number of blades in the pulverization blade 32, the pulverization auxiliary blade 33, the fluid conveyance blades 34a, 34b, 34c, the shear blade 35, the local stirring blades 36a, 36b, 36c, the backflow auxiliary blade 37, and the backflow generation blade 38. However, in the present invention, the number of blades of these blades is not particularly limited, and may be appropriately changed according to conditions. For example, the number of blades 321 of the crushing blade 32 may be six, or the number of blades 341 of the fluid conveying blade 34 may be four.

  The resin dispersion continuous coagulation method according to the present invention can continuously coagulate without problems even in the case of a resin dispersion such as rubber latex to obtain resin coagulated particles having a size within a predetermined range. It is particularly effective for the formation of rubber latex particles.

It is a plane fragmentary sectional view of the resin dispersion coagulation apparatus which concerns on this invention. 1 is a side view of a resin dispersion coagulation apparatus according to the present invention. It is the figure which piled up the sectional view of the stirring rod in the resin dispersion coagulation apparatus which concerns on this invention, the sectional view of the main-body part of a casing, the front view of a flange, and the longitudinal cross-sectional view of a resin coagulated particle discharge pipe. It is a side view of the stirring rod of the resin dispersion coagulation apparatus according to the present invention. It is a rear view of the grinding | pulverization blade | wing of the resin dispersion coagulation apparatus which concerns on this invention. It is AA sectional drawing of the grinding auxiliary blade of the resin dispersion coagulation apparatus which concerns on this invention. It is a front view of the fluid conveyance wing | blade of the resin dispersion coagulation apparatus which concerns on this invention. It is BB sectional drawing of the shearing blade of the resin dispersion coagulation apparatus which concerns on this invention. It is CC sectional drawing of the local stirring blade of the resin dispersion coagulation apparatus which concerns on this invention. It is DD sectional drawing of the backflow auxiliary | assistant blade | wing of the resin dispersion coagulation apparatus which concerns on this invention. It is a front view of the backflow generation | occurrence | production blade of the resin dispersion coagulation apparatus which concerns on this invention. It is EE sectional drawing of the backflow generation | occurrence | production blade of the resin dispersion coagulation apparatus which concerns on this invention. It is a side view of the stirring rod which concerns on a modification (A).

Explanation of symbols

31 Shaft 32 Grinding blade 33 Grinding auxiliary blade 34a, 34b, 34c Fluid conveying blade 36a, 36b, 36c Local stirring blade 111 Fixed blade 331 Grinding auxiliary blade 361 Local stirring blade SPc Grinding space SPe Discharge space SPr Backflow space SPs Shear space

Claims (5)

The resin dispersion liquid is supplied at a first flow rate through the first passage to the pulverization space (SPc) in which the pulverization blade (32) is disposed, and at the same time, the coagulation liquid is supplied at the second flow rate through the second passage, and the resin in the pulverization space. The dispersion coagulated liquid and the coagulated liquid are stirred and mixed by the pulverizing blade, and at the same time, the resin coagulate formed by the stirring and mixing of the resin dispersion liquid and the coagulated liquid is pulverized by the pulverizing blade and the size within a predetermined range. Resin agglomerated particles are sequentially manufactured, and the resin agglomerated particles are continuously sent to shear spaces (SPs) adjacent to the pulverization space;
A plurality of fluid conveying blades (34a, 34b, 34c) disposed in the shear space and delivering the resin coagulated particles to the discharge space adjacent to the shear space, and a cylindrical wall from the cylindrical wall forming the shear space And a shearing step of continuously feeding the resin coagulated particles to the discharge space (SPe) while applying a shearing force to the resin coagulated particles by a fixed blade (111) extending toward the wall axis. Dispersion continuous coagulation method. In the space between the fluid conveying blades, a local agitating blade having a rotating shaft on an extension line of the rotating shaft of the fluid conveying blade and a plurality of blades (361) extending along a surface including the rotating shaft (361) 36a, 36b, 36c) are arranged,
The resin dispersion continuous coagulation method according to claim 1, wherein the shear force is generated by the fluid conveying blade, the local stirring blade, and the fixed blade. In a backflow space (SPr) provided with a backflow generation blade that has a rotation axis on an extension line of the rotation axis of the crushing blade and generates a fluid flow in a direction opposite to the flow direction of the resin coagulated particles, a third passage Further comprising a backflow generating step of sending the coagulated liquid sent through the discharge space to the discharge space by a backflow generating blade,
The resin coagulated particles that flow into the discharge space from the shear space and the coagulation liquid that flows into the discharge space from the backflow space are mixed and discharged from the discharge space to the outside of the system. The resin dispersion continuous coagulation method described in 1. The pulverization blade extends in the outer circumferential direction of the shaft (31) from the end of the shaft existing in the shearing space toward the pulverization space, and when viewed along the longitudinal direction of the shaft, the radial direction of the shaft The resin dispersion continuous coagulation method according to claim 1, further comprising a plurality of blades attached to the shaft so as to be inclined at a predetermined angle with respect to the shaft. A grinding auxiliary blade (33) having a plurality of blades (331) extending along a surface including the shaft axis is attached to the shaft at a position adjacent to the grinding blade.
The resin dispersion continuous coagulation method according to claim 4.

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