JP2006348066A - Method for recovering dried rubber solidified in pulse combustion and apparatus for recovering the same dried rubber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the method and the apparatus in which a dried rubber can efficiently and continuously be recovered by instantaneously drying a rubber composition solution and solidifying the dried rubber. <P>SOLUTION: The apparatus for recovering the dried rubber comprises a drying step (A) for detachably attaching a combustion chamber in which a pulse combustion device 2 is housed through a sealing member 10 to a drying tank 4 equipped with a bottom-receiving table 3 on a turn table 1 which is made turnable by 360 degree and liftable, a compression step (B) for forming a solid material Q of dried rubber particles Wx on the bottom-receiving table 3 by compressing dried rubber particles Wx in the drying tank 4 with a pressing hammer 5, a separation step (C) for carrying out the solid material Q of rubber particles Wx on the bottom-receiving table 3 through an extruding means to a carrying-out step 7 and a return step (D) for transporting the solid material Q of the rubber particles Wx from the drying step (A) by combining an empty bottom receiving table 3 with an empty drying tank 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for recovering solidified dry rubber in pulse combustion and a dry rubber recovery device, and more particularly, a rubber composition solution such as a rubber latex or a rubber solution of natural rubber or synthetic rubber by a pulse combustor. The present invention relates to a method for recovering solidified dry rubber in pulse combustion and a recovery device for the dry rubber, which can recover continuously and efficiently dried rubber solidified instantaneously.

  Conventionally, as a method for producing natural rubber or synthetic rubber, in the case of natural rubber, natural rubber latex is manually collected from a tree, filtered and then formic acid is added to solidify, and processed into a sheet or block shape. It is shipped (see, for example, Patent Document 1).

  The synthetic rubber latex obtained by emulsion polymerization is coagulated by adding an acid such as saline and dilute sulfuric acid, and the resulting crumb is separated from the serum, and after washing, it is put into an extruder type dryer and dried. After that, we are weighing and packaging.

  However, the former method for producing natural rubber has many manual processes, and has a great effect on the viscosity of rubber products obtained in many production processes such as natural rubber latex coagulation process, washing process and drying process, especially in the drying process. There is a problem that it cannot be said that it is sufficient as a rubber production method due to the influence of variations in rubber products and the quality of the current rubber latex.

On the other hand, the synthetic rubber latex production method, like the natural rubber production method, requires a lot of labor and time for the water removal process after coagulation once, requires large-scale equipment, and increases costs. there were.
JP 2003-26704 A

  The present invention pays attention to such conventional problems, and by injecting and contacting the rubber composition solution toward the blasting combustion exhaust gas of the pulse combustor, the rubber composition solution is instantaneously dried, and the dried rubber is solidified. An object of the present invention is to provide a method for recovering solidified dry rubber in pulse combustion, which can be recovered efficiently and continuously, and a device for recovering the dry rubber.

  In order to achieve the above object, the present invention provides a method for recovering solidified dry rubber in pulse combustion in a drying process in which a pulse combustor and a drying tank equipped with a bottom support are detachably mounted. The rubber composition solution is jetted toward the blasting combustion exhaust gas ejected from the combustor to instantaneously evaporate and dry the moisture and liquid of the rubber composition solution to produce dry rubber particles. After separating the drying tank from the drying tank, the drying tank provided with the bottom cradle is moved to the compression process, and in the compression process, the dried rubber particles in the drying tank are compressed by the compression hammer and dried on the bottom cradle. After forming a solid body of particles and removing the compression hammer from the drying tank, only the drying tank is transported to the return process by the transfer means, and the rubber particles on the compression process are The bottom cradle on which the shape is placed is transferred to the separation process, and in this separation process, the solid matter of the rubber particles on the bottom cradle is transported to the unloading process via the extrusion means, and returned to the empty bottom cradle. The gist of the present invention is to assemble an empty drying tank waiting for the process, transfer it to the drying process, integrally connect with the pulse combustor, and repeat the same process again.

  Here, the rubber composition solution is a rubber latex or a rubber solution, and the drying step, the compression step, the separation step, and the return step are continuously performed on a turntable that can be rotated 360 degrees and that can be raised and lowered. Is what you do.

  In addition, the solidified dry rubber recovery device in the pulse combustion of the present invention can be attached to and detached from a pulse combustor and a drying tank equipped with a bottom pedestal on a turntable that can be rotated 360 degrees. The attached drying process, the compression process in which the dried rubber particles in the drying tank are compressed with a compression hammer to form solid rubber particles on the bottom cradle, and the solid rubber particles on the bottom cradle. A separation step for carrying out the unloading step through the extrusion means, a return step for assembling an empty bottom receiving base and an empty drying tank, and transferring from the drying step, are provided on the turntable, and a compression step The gist of the present invention is to provide a transfer means for gripping and transporting an empty drying tank in the return process and an extruding means for discharging the solid matter of the rubber particles on the bottom receiving table to the carry-out process.

  Here, the transfer means comprises a turning arm that turns around the center of the turntable, and a pair of chucks that detachably grip the side surface of the drying tank at the tip of the arm, and the pushing means is a pushing means. An extrusion head is provided at the tip of the cylinder so as to come into contact with the side surface of the solid matter of the rubber particles and to be carried out in the carrying-out process.

  By comprising in this way, a rubber composition solution can be dried instantaneously and a dry rubber can be solidified and it can collect | recover efficiently and continuously.

Since the present invention is configured as described above, the following excellent effects can be obtained. (A). The rubber composition solution can be instantaneously dried by spraying the rubber composition solution against the blasting flue gas of the pulse combustor, and the dried rubber can be recovered continuously and efficiently in a solidified state. I can do it.
(B) Since the collection operation can be performed automatically and continuously without human intervention, there is no variation in the rubber product, and a high-quality rubber product can be manufactured at a low cost.
(C). Since it can be manufactured efficiently with relatively simple equipment, the cost can be reduced. (D). The rubber latex can be a master batch in which carbon, silica, or the like is mixed.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a partially enlarged cross-sectional view of a dry rubber recovery device for carrying out the method for recovering solidified dry rubber in pulse combustion according to the present invention, FIG. 2 is a plan view of the entire dry rubber recovery device, and FIG. Shows a front view of FIG.

  The dry rubber recovery device is a combustion chamber in which a pulse combustor 2 is housed on a turntable 1 that can be rotated 360 degrees by a known drive means (not shown) (for example, a drive motor, a lift cylinder, etc.). A drying process (A) in which a drying tank 4 provided with 12a and a bottom receiving base 3 is detachably mounted via a seal ring member 10, and a compressed hammer 5 such as a piston is used to dry rubber particles Wx in the drying tank 4 A compression step (B) for forming a solid material Q of rubber particles Wx that has been compressed and dried on the bottom cradle 3, and carrying out the solid material Q of rubber particles Wx on the cradle 3 via the extrusion means 6. A separation step (C) for carrying out to step 7 and a return step (D) for assembling the empty bottom cradle 3 and the empty drying tank 4 and transferring from the drying step (A) are provided.

  Further, on the turntable 1, transfer means 8 for gripping and transporting the empty drying tank 4 from the compression step (B) to the return step (D), and a solid material Q of the rubber particles Wx on the bottom support 3. Is provided with the above-described pushing means 6 for carrying out the unloading process in the unloading process 7.

  As shown in FIG. 1, the pulse combustor 2 includes a combustion section 12 and a tail pipe 13, and is accommodated in a combustion chamber 12a having an inlet for secondary air A '. The combustion unit 12 is provided with a suction port 14 for combustion air A, a fuel supply port 15 for gaseous fuel (for example, natural gas, propane gas, etc.) and liquid fuel (for example, kerosene), and a starter plug 16. is there.

  A rubber latex or a rubber solution (a solvent capable of solubilizing rubber is used as the solvent, for example, toluene, xylene, chloroform, tetrahydrofuran, hexane, and the like, below the outlet side 13a of the tail pipe 13 connected to the combustion unit 12 , A solvent containing at least one of heptane and octane, which may be a mixture of several types). A hopper 2a for drying a rubber composition solution W is connected to the hopper 2a via a seal ring member 10. A drying tank 4 having a bottom receiving base 3 that is detachably attached is detachably attached in a vertical direction.

  Provided on the lower side surface of the combustion chamber 12a is a supply means 17 for the rubber composition solution W for injecting the rubber composition solution W toward the blasting combustion exhaust gas G ejected from the tail pipe outlet side 13a. An exhaust pipe 18 that discharges vaporized moisture and liquid to the outside of the drying tank 4 is connected to the side surface.

  The supply means 17 has a tip of a supply nozzle 17a disposed horizontally toward the tail pipe outlet side 13a, and supplies a predetermined amount of the rubber composition solution W toward the blast combustion exhaust gas G ejected from the tail pipe outlet side 3a. It is configured to instantaneously evaporate and dry the water and liquid of the rubber composition solution W by spraying with pressure and bringing them into contact with each other.

  That is, by injecting the rubber composition solution W into the exhaust gas (in the sound field) generated by the pulse combustor 2, a shock wave (frequency: 60 to 1000 Hz), explosion generated gas, alternating flow, gas temperature (40 ° C.) In contact with various “characteristics” of the exhaust gas such as (˜200 ° C.), a dynamic action utilizing pressure fluctuations works, and “instantaneous drying” in which dehydration and drying coexist is performed.

  The moisture and liquid evaporated from the rubber composition solution W are discharged to the outside of the drying tank 4 through the exhaust pipe 18 as described above, and the dried rubber particles Wx such as natural rubber or synthetic rubber are It is configured to drop by its own weight toward the bottom cradle 3 below the drying tank 4.

  As shown in FIG. 2, the transfer means 8 includes a revolving arm 20 that revolves around the center O of the turntable 1, and a pair of chucks 21a that removably grasp the side surface of the drying tank 4 at the tip of the arm 20. 21b, and the extrusion means 6 is provided with an extrusion head 6b which is brought into contact with the side surface of the solid material Q of the rubber particles Wx and carried to the carrying-out step 7 at the tip of the pushing cylinder 6a.

  Moreover, although the said carrying-out process 7 is comprised by conveyor 7a, such as a conveyor belt which mounts the solid substance Q of rubber particle Wx and conveys continuously to the following process, it is not limited to this, A conveyance means If it exists, arbitrary things, such as a roller conveyor and a slider, can be used.

  The inner wall surface of the drying tank 4 can be processed with Teflon (registered trademark) or the like to make it difficult for the dry rubber particles Wx to adhere to the inner surface of the bottom tank 3 on which the solid material Q is placed. It is also possible to process the surface with Teflon (registered trademark) or the like so that the dry rubber particles Wx are difficult to adhere.

  Next, a method for recovering solidified dry rubber Q (solid matter Q of rubber particles Wx) using the dry rubber recovery apparatus having the above-described configuration will be described.

  First, in the drying step (A) in which the combustion chamber 12a containing the pulse combustor 2 and the drying tank 4 provided with the base 3 are detachably mounted, toward the blast combustion exhaust gas G ejected from the pulse combustor 2. The rubber composition solution W is sprayed and the water and liquid of the rubber composition solution W are vaporized and dried instantaneously (for example, 0.01 seconds) to generate dry rubber particles Wx. The evaporated water and liquid are discharged to the outside of the drying tank 4 through the exhaust pipe 18.

  Thereafter, the hopper 2a and the drying tank 4 of the pulse combustor 2 are separated from the seal ring member 10, and the drying tank 4 provided with the bottom receiving base 3 is rotated to move to the compression step (B). The hopper 2a and the drying tank 4 of the pulse combustor 2 are separated by lifting the pulse combustor 2 and the hopper 2a from the drying tank 4 mounted on the turntable 1 by a lifting device (not shown) or by pulse combustion. It is possible to separate the drying tank 4 from the pulse combustor 2 and the hopper 2a by lowering the turntable 1 while the combustor 2 and the hopper 2a are fixed.

  Next, in the compression step (B), the dried rubber particles Wx in the drying tank 4 are compressed by the compression hammer 5 to form a cylindrical solid material Q of the dried rubber particles Wx on the bottom cradle 3. After removing the compression hammer 5 from the drying tank 4, only the drying tank 4 is transported to the return step (D) by the transfer means 8.

  Further, the bottom table 3 on which the solid material Q of the rubber particles Wx on the compression step (B) is placed is transferred by rotating the turntable 1 to the separation step (C). In this separation step (C), The solid material Q of the rubber particles Wx on the bottom cradle 3 is unloaded to the unloading step 7 through the pushing means 6. Then, an empty bottom cradle 3 and an empty drying tank 4 waiting in the return step (D) are assembled, and the turntable 1 is rotated and transferred to the drying step (A). The hopper 2a and the seal ring member 10 are coupled together.

  By repeatedly performing such process operations, the dried rubber can be solidified and recovered efficiently and continuously. Further, since the collection operation can be performed automatically and continuously without human intervention, there is no variation in the rubber product, and a high-quality rubber product can be manufactured at a low cost. Furthermore, since it can be manufactured efficiently with relatively simple equipment, the cost can be reduced.

It is a partial expanded sectional view of the recovery apparatus of the dry rubber for enforcing the recovery method of the solidified dry rubber in pulse combustion of this invention. It is a top view of the whole collection | recovery apparatus of dry rubber. It is a XX arrow front view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Turntable 2 Pulse combustor 2a Hopper 3 Bottom receiving stand 4 Drying tank 5 Compression hammer 6 Extrusion means 6a Extrusion cylinder 6b Extrusion head 7 Unloading process 7a Conveyor 8 Transfer means 10 Seal ring member 12 Combustion part 12a Combustion chamber 13 Tail pipe 13a Tail pipe outlet side 14 Suction port 15 Fuel supply port 16 Starter plug 17 Supply means 17a Supply nozzle 18 Exhaust pipe 20 Swing arm 21a, 21b Chuck (A) Drying process (B) Compression process (C) Separation process (D) Return Process A Combustion air G Explosion combustion exhaust gas W Rubber composition solution Wx Dry rubber particle Wz Dry rubber Q Solid

Claims (6)

In a drying process in which a pulse combustor and a drying tank equipped with a bottom pedestal are detachably mounted, the rubber composition solution is injected toward the blasting combustion exhaust gas ejected from the pulse combustor, and the water content of the rubber composition solution and After instantly evaporating and drying the liquid, dry rubber particles are generated, and then the pulse combustor and the drying tank are separated, and then the drying tank equipped with the bottom cradle is moved to the compression process. The dried rubber particles in the drying tank are compressed with a compression hammer to form a solid product of dried rubber particles on the bottom cradle. After the compression hammer is removed from the drying tank, only the drying tank is transferred by means of transfer. The bottom support on which the solid particles of the rubber particles in the compression process are placed is transferred to the separation process, and in this separation process, the solids of the rubber particles on the bottom support are pressed. Unloading to the unloading process through the first and second means, assembled with an empty bottom cradle and an empty drying tank waiting for the return process, transferred to the drying process and integrally coupled with the pulse combustor, A method for recovering solidified dry rubber in pulse combustion, characterized in that the same steps are repeated. The method for recovering solidified dry rubber in pulse combustion according to claim 1, wherein the rubber composition solution is rubber latex or a rubber solution. The recovery of solidified dry rubber in pulse combustion according to claim 1 or 2, wherein the drying step, the compression step, the separation step, and the return step are continuously performed on a turntable that can be rotated 360 degrees and that can be raised and lowered. Method. A drying process in which a pulse combustor and a drying tank equipped with a bottom cradle are detachably mounted on a turntable capable of turning 360 degrees, and the rubber particles dried in the drying tank are compressed by a compression hammer. A compression step for forming solid rubber particle solids on the bottom support, a separation step for discharging the rubber particle solids on the bottom support to an unloading step via an extrusion means, and an empty bottom support A transfer means for assembling a table and an empty drying tank, providing a return process for transferring from the drying process, and holding and transporting an empty drying tank from the compression process to the return process on the turntable; An apparatus for recovering solidified dry rubber in pulse combustion, comprising: an extruding means for carrying out a solid matter of rubber particles on a bottom receiving table in a carrying-out process. 5. The solidification in pulse combustion according to claim 4, wherein the transfer means is constituted by a revolving arm that revolves around the center of the turntable and a pair of chucks that detachably grips the side surface of the drying tank at the end of the arm. Dry rubber recovery device. 6. The recovery of solidified dry rubber in pulse combustion according to claim 4 or 5, wherein the extruding means is provided with an extruding head that is brought into contact with a side surface of the solid matter of the rubber particles at the tip of the extruding cylinder and carried out in the carrying out process. apparatus.

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