JP2007056073A - Apparatus for manufacturing resin-based modifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem, in an apparatus for manufacturing a resin-based modifier by burning a part of a synthetic resin waste material in an oxygen-deficient state on a rooster arranged at a lower part of a heat chamber to cause a part of the rest of the synthetic resin waste material to melt or pyrolyze by the combustion heat and taking out molten wax-like melt from the lower part of the combustion furnace to obtain the resin-based modifier, that combustion is discontinued because combustion residue accumulates on the rooster with the lapse of time and wax-like melt, formed by melting or pyrolysis of the synthetic resin waste material, soaks into the combustion residue to cause the synthetic resin waste material as the raw material to be buried in the combustion residue containing the wax-like melt and other problems. <P>SOLUTION: A rotating disc 45 is arranged below the grate 26 and the combustion residue is caused to fall on the disc. An apparatus 50 for taking out the combustion residue on the rotating disc 45 to the outside of the heat chamber is furnished. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a resin-based modifier production apparatus for producing a wax-like substance used for the purpose of property modification of resin, rubber, etc., ink, paint or pigment by thermally decomposing a part of the synthetic resin waste It is about.

Conventionally, as a resin-based modifier manufacturing equipment that produces wax-like substances by melting and thermally decomposing synthetic resin waste consisting of multiple types of synthetic resins or resins containing carbon black and inorganic additives Various things have been proposed. (For example, Patent Documents 1 to 3)
Thereby, synthetic resin waste such as polyethylene resin can be treated as a raw material, and a wax-like substance useful for property modification of resin and rubber, ink, paint or pigment can be produced.

  In the disclosed resin modifier manufacturing apparatus, as shown in FIG. 9, a bottomed cylindrical receiving tank T for storing a wax-like substance melt has a tank upper end opening 1b, And it is supported and provided by the support leg 1a.

  A cylindrical combustion basket 2 for heating and melting the raw material A such as synthetic resin waste material is integrally mounted and fixed in the tank upper end opening 1b of the reservoir tank T. A large number of air introduction holes 2 b are formed in the side wall of the combustion basket 2 in the thickness direction of the side wall so as to communicate the inside and the outside of the combustion basket 2.

  A closed box-shaped catalyst tank (deplasticization promoting basket) 4 is attached to the lower end opening 2a of the combustion basket 2 so as to close the lower end opening 2a from below. The catalyst tank 4 has a net-like part 4a whose entire wall is porous, and a metal catalyst for promoting deplasticization of the melt B, for example, a linear shape made of platinum or copper, in the catalyst tank 4. The catalyst 4b is filled so that the melt B can pass through.

  A cylindrical air balancer 5 for adjusting the amount of air supplied to the combustion basket 2 is installed at a predetermined interval with respect to the outer periphery of the combustion basket 2 so as to cover the outer periphery of the combustion basket 2. An air introduction opening 5 a is provided in the lower part of the air balancer 5.

  In order to efficiently send the flammable hot gas G generated in the reservoir tank T into the combustion basket 2 between the reservoir tank T and the combustion basket 2, a communication pipe 9. Are installed along the vertical direction with respect to the outer wall of the reservoir tank T. Each communication pipe 9 is provided with a pump 10 for sending the gas from the reservoir tank T to the combustion basket 2 in order to promote the delivery of the hot gas G.

  A pipe-like heater 6 is installed at the inner bottom of the reservoir tank T as a heating means for raising the melting temperature of the wax-like substance C by electric heating. In addition, a temperature sensor 7 such as a bimetal or a thermocouple for detecting the melting temperature of the wax-like substance C is installed inside the reservoir tank T as temperature detection means.

  The heater 6 is provided with control means 8 such as a microcomputer for controlling on / off or proportional control of the heater 6 so as to keep the melt of the wax-like substance C at a predetermined temperature.

  In the lower part of the combustion basket 2, the rooster 3, which is a raw material tray for placing the raw material A and melting and pyrolyzing it, closes the lower end opening 2 a of the combustion basket 2 from above. These are attached to the peripheral wall in the combustion basket 2.

  In order to produce a wax-like substance in the production apparatus described above, first, as the raw material A, a combustible, for example, crosslinked polyethylene alone, or a mixture of a crosslinked polyethylene and a polyolefin such as non-crosslinked or low-crosslinked polyethylene is used. A predetermined amount of the raw material A is charged onto the rooster 3 of the combustion basket 2 from the raw material charging hopper 6.

  Next, when the crosslinked polyethylene contained in the raw material A is ignited, the synthetic resin for producing the wax-like substance is thermally decomposed and melted, and the melt B is dropped from the rooster hole portion 3a and passes between the catalysts in the catalyst tank 4. Then, it falls into the reservoir tank T.

  At this time, the catalyst tank 4 and the receiving tank T gradually become deficient due to the disappearance of oxygen due to combustion of the highly crosslinked polyethylene, and the wax-like substance C thermally decomposed in the deficient oxygen state accumulates in the receiving tank T.

  As described above, the wax-like substance C that is melted and in a high heat state is partially vaporized in an oxygen deficient state to generate a flammable hot gas G. The hot gas G is sent into the combustion basket 2 through a communication pipe 9 provided between the reservoir tank T and the combustion basket 2.

  The communication pipe 9 is for efficiently sending the flammable hot gas G generated in the reservoir tank T into the combustion basket 2, and a plurality of the pipes 9 are located above and below the outer wall of the reservoir tank T. Each communication pipe 9 is provided with a pump 10 for sending the gas from the reservoir tank T to the combustion basket 2 in order to promote the delivery of the hot gas G. The hot gas G is mixed with the air introduced from the air introduction hole 2a of the combustion basket 2 in the combustion place of the raw material A sent into the combustion basket 2 and burned, and the melting of the raw material A is continued. . By configuring the apparatus in this manner, it is necessary to supply thermal energy at the time of start-up, but thereafter, thermal energy is supplied independently.

JP 60-190494 A JP-A-10-128747 JP 2003-206373 A

  However, although the above-described resin-based modifier manufacturing apparatus has the role that the rooster 3 disposed below the combustion furnace that burns the raw material A in an oxygen-deficient state serves to mount the raw material A and burn it, the raw material A The combustion residue A ′ generated by burning the is left on the rooster 3 as it is. For this reason, even if the top of the rooster 3 is clean as shown in FIG. 10, the combustion residue A ′ is deposited on the rooster 3 as shown in FIG. 11 as the combustion time elapses. As shown in FIG. 12, another raw material A is buried and embedded on A ′, the combustion of the raw material A does not continue, and the generated wax-like melt is mixed with the combustion residue A ′ to form a resin system. The quality of the modifier is lowered, and the generated wax-like melt is absorbed in the combustion residue A ′, or the absorbed wax-like melt is burned and disappears. There existed problems, such as being unable to manufacture well.

  The present application has been made in view of such a point, and a part of the synthetic resin waste material is burned in an oxygen-deficient state on a rooster disposed below the combustion cylinder, and the remaining one of the synthetic resin waste material is burned by the burned heat. In a resin-based modifier manufacturing apparatus for producing a resin-based modifier by melting and thermally decomposing the part and taking out the melted wax-like melt from the lower side of the combustion furnace, the central axis of the combustion cylinder is located below the combustion cylinder A ring-shaped reduced diameter flange projecting in the direction is formed, a combustion residue discharge through hole penetrating vertically is formed in the reduced diameter flange, and a ring-shaped recessed groove is formed on the reduced diameter flange. A rotating dish having a central through hole penetrating vertically is placed on the inner peripheral side of the inner wall, a combustion residue discharge hole penetrating in the vertical direction is formed on the concave groove, and the bottom portion is further accompanied by the rotation of the rotating dish. To slide on the groove The combustion residue stopper is fixed to the combustion cylinder side, the rooster is disposed on the rotating dish, and the wax-like melt produced by melting and pyrolyzing on the roaster is taken out through the central through hole, The combustion residue formed above is dropped onto the concave groove, and the combustion residue is taken out through the combustion residue discharge hole and the combustion residue discharge through hole.

  In the present invention, the combustion residue formed on the rooster is dropped into the concave groove, and the combustion residue is taken out of the combustion cylinder through the combustion residue discharge hole and the combustion residue discharge through hole. There is no accumulation. For this reason, it has the characteristics which can manufacture a resin-type modifier with favorable quality efficiently.

  The present invention can employ various embodiments as described below.

  The rotating dish is characterized in that a plurality of driving windows penetrating the outer peripheral wall are formed on the outer peripheral wall of the concave groove, and the rotating dish is rotated by engaging an operating piece with the driving window.

  A helical screw is disposed below the combustion residue discharge through hole.

  In the combustion furnace in the upper part of the combustion part where the synthetic resin waste is combusted, an air outlet is arranged for jetting the air from the outside upward while spirally rotating.

  A receiving tank for storing a melted wax-like melt is disposed below the combustion furnace.

  Hereinafter, the present invention will be described in more detail with reference to an illustrated embodiment. 1 to 4 show a resin modifier manufacturing apparatus according to the present embodiment. FIG. 1 is an explanatory sectional view of the entire apparatus, and FIGS. 2 to 4 are exploded sectional explanatory views of main parts. However, auxiliary parts such as the support legs shown in FIG. 9 are omitted. 1-4, 20 is a combustion furnace, 30 is an air intake device disposed on the inner wall near the center of the combustion furnace 20, 40 is a rotary drive device disposed at the lower part of the combustion furnace 20, and 50 is a combustion A combustion residue discharge device 60 disposed at the lower portion of the furnace 20 is a reservoir tank disposed at the lower portion of the combustion furnace 20.

  In the combustion furnace 20, flanges 22 are attached to the end portions of a plurality of short cylindrical bodies 21 a to 21 f formed of a heat resistant material such as an iron plate by welding, and the respective short cylindrical bodies 21 protrude from each other. Combustion cylinders (outer wall) 24 are configured by being joined together and connected by a connecting tool 23 such as a bolt and a nut. However, a diameter-reducing flange 22 'whose diameter is reduced is attached by welding or the like around the lower end of the lowermost short cylindrical body 21f, and the reservoir tank 60 is further attached to the inner-diameter end of the diameter-reduced flange 22'. A short cylindrical body 60 ′ constituting a part of is attached by welding.

The upper opening of the combustion cylinder 24 is covered with a heat-resistant inverted flask-shaped lid 25 that covers the combustion cylinder 24, and the exhaust gas generated by combustion in the combustion cylinder 24 from the exhaust hole 25 ′ formed at the center thereof. Gas is exhausted.
A rooster 26 is disposed on the reduced diameter flange 22 'of the short cylindrical body 21f, through which a synthetic resin waste material in which a large number of through holes 26' are formed is placed and melted and thermally decomposed via a rotating plate 45 or the like described later. Yes.

  Further, a second rooster 27 in which a plurality of plate-like bodies on which synthetic resin waste material (not shown) arranged in the combustion cylinder 24 is placed is arranged radially is arranged in the central portion of the rooster 26. A hopper 28 having a cross-section formed in an inverted C shape for collecting synthetic resin waste at the center is attached to the periphery.

The air intake device 30 includes an air introduction base 31 and an air ejection portion 34.
The air introduction table 31 also serves as a short cylindrical body 21c constituting a part of the combustion cylinder 24. As shown in FIG. 5, the U-shaped groove 32 is formed in a loop shape, and the U-shaped groove The air introduction nozzles 33 are arranged along the tangential direction of the loop-shaped U-shaped groove 32 at two positions on the diagonal line outside the outer wall 32. The air introduction nozzle 33 communicates with the U-shaped groove 32.

  The air ejection part 34 includes a small-diameter cylindrical body 35 smaller in diameter than the short cylindrical body 21b, and an air ejection direction changing part 36 disposed between the short cylindrical body 21b and the small-diameter cylindrical body 35. The cylindrical body 21b, the small diameter cylindrical body 35, and the air ejection direction changing portion 36 constitute an air ejection port 37.

  The air ejection direction changing portion 36 is slit obliquely with respect to the axis of the intermediate cylinder 38 on the upper circumference of the intermediate cylinder 38 having an intermediate diameter between the short cylinder 21b and the small cylinder 35. 38 'is formed, and furthermore, a blade 39 is inserted and arranged in each slit 38' (see FIG. 6).

  As a result, when air whose air volume is controlled is introduced from the air introduction nozzle 33 via an air pump (not shown), the air reaches the wing plate 39 via the U-shaped groove 32, and the flow of air here Is bent by the wing plate 39 disposed obliquely, and ejected upward while rotating spirally from the inner peripheral wall of the combustion cylinder 24.

The rotary drive device 40 includes a drive source 41 that generates drive power, a rotating plate 45 that rotates by the drive source 41, and a rotary roller 49.
As shown in FIG. 7, the rotating dish 45 is formed in a donut shape, and an inner peripheral wall 45 ′ and an outer peripheral wall 45 ″ projecting upward are formed on the inner periphery and the outer periphery, respectively. Thus, a ring-shaped groove 46 is formed by the inner peripheral wall 45 ′ and the outer peripheral wall 45 ″. The inner peripheral wall 45 ′ is configured to have a smaller height than the outer peripheral wall 45 ″, and a plurality of drive windows 47 arranged at predetermined intervals are formed on the outer peripheral wall 45 ″. Further, a through hole 48 is formed in the groove 46 at a diagonal position.
The rotating tray 45 configured as described above is placed on the reduced diameter flange 22 'via the rotating roller 49. The rotating roller 49 serves to rotate the rotating plate 45 on the reduced diameter flange 22 'with reduced frictional resistance. In addition, as described above, the rotating dish 45 has the rooster 26, the second rooster 27, and the hopper 28 mounted thereon.

  The drive source 41 is configured such that its action part reciprocates linearly within the casing 42 in the tangential direction of the short cylindrical body 21f by an electromagnetic solenoid, an air pump, or the like. It is attached, protrudes into the combustion cylinder 24 through the drive window 21f ′ formed on the side wall of the short cylindrical body 21f, and is fitted into the drive window 47 formed on the outer peripheral wall 45 ″ of the rotating dish 45 ( (See FIGS. 1, 4 and 8). The action piece 43 is configured to bend only in one direction within a horizontal plane formed by a plurality of drive windows 47.

  Therefore, when the action part moves to the side opposite to the bending direction, the action piece engages with the drive window 47 to rotate the rotating plate 45 in the moving direction, and when the action piece 43 moves in the bending direction, the action piece 43 is disengaged from the drive window 47 that has been fitted so far, and is fitted into the next drive window 47. As a result, each time the action part moves back and forth on a straight line, the rotating plate 45 can be rotated by the length of one drive window 47 each time. Further, when the rotating plate 45 rotates, the rooster 26, the hopper 28, and the like riding on the rotating pan 45 are also rotated at the same time.

The combustion residue discharging device 50 is provided with a plate-like combustion residue stopper 51 (see FIGS. 1 and 4) which is disposed on the rotating plate 45 and fixed to the inner wall of the short cylindrical body 21f, and a combustion residue stopper 51. The screw conveyor 52 (see FIGS. 1, 4, and 8) disposed below the diameter-reduced flange 22 ′ at the position.
The screw conveyor 52 is provided with a spiral screw (not shown) formed in a spiral shape in a casing whose inner wall is formed in a cylindrical shape, and the helical screw is rotated by a motor (not shown) so that the combustion dropped on the spiral screw. The residue is configured to be carried by a helical screw and stored in a combustion residue storage body arranged at the end of the housing.
A combustion residue discharge through hole 22 '' is formed in the reduced diameter flange 22 'where the combustion residue stopper is located.

Next, this embodiment will be described in more detail along with the operation.
In order to manufacture the wax-like substance (resin-based modifier) in the above-described manufacturing apparatus, the rotary drive device 40 and the combustion residue discharge device 50 are operated in advance. Thereby, the rotating dish in a combustion furnace rotates intermittently, and the rooster 26, the 2nd rooster 27, and the hopper 28 mounted on this also rotate intermittently interlockingly. Furthermore, the helical screw of the screw conveyor 52 also rotates, and the combustion residue placed on the helical screw described later can be conveyed.

  Next, a raw material of the combustible material, for example, a crosslinked polyethylene alone or a mixture obtained by mixing a small amount of a crosslinked polyethylene and a polyolefin such as non-crosslinked or low-crosslinked polyethylene is introduced from a raw material inlet provided on the lid 25 (not shown). When a fixed amount is introduced into the combustion cylinder 24 by a robot or artificially, the raw material is guided by the hopper 28 and placed on the second rooster 27 or the rooster 26. As the raw material, a sheath material of a power cable whose expiration date has passed is used.

  Next, the highly crosslinked polyethylene contained in the raw material is ignited and burned. When combustion starts, it is contained in a combustion furnace or the like, and oxygen gradually disappears, resulting in an oxygen-deficient state. In this state, the temperature is measured by a thermocouple installed in a combustion cylinder (not shown), and / or flame is measured by an industrial television through a viewing window formed in the combustion cylinder. The capture device 30 is operated appropriately. If the amount of oxygen taken up is too large, most of the raw material is burned and the yield of the resin modifier is deteriorated. On the other hand, when the amount of oxygen taken in decreases, combustion disappears. Therefore, based on the measurement information, the air intake device 30 is appropriately controlled to appropriately supply oxygen.

  At this time, the air intake device 30 spouts the air upward while rotating spirally from the inner peripheral wall of the combustion cylinder 24, so that the blown air directly touches the flame, and the flame of It can be burned stably without causing rampage.

  In this way, a part of the raw material disposed on the rooster 26 and the second rooster 27 is continuously maintained by the air supplied by the air intake device 30. As described above, it is necessary to supply thermal energy at the time of start-up, but thereafter, combustion continues autonomously.

  In this way, when a part of the raw material is combusted, combustion heat is generated, and the raw synthetic resin for producing the waxy substance is thermally decomposed and melted. The melt (resin-based modifier) travels along the surface of the second rooster 27 and drops from the through hole 26 ′ formed in the rooster 26, and falls into the reservoir tank 60. At this time, when a part of the raw material is combusted, a combustion residue is also generated.

  This combustion residue becomes a carbide and adheres to the surface of the second rooster 27 and the upper surface of the rooster 26. However, the rooster 26 and the second rooster 27 are intermittently rotated by the rotary drive device 40 as described above. For this reason, vibration is generated with this intermittent rotation. As a result, the combustion residue adhering to the second rooster 27 is shaken off and falls onto the upper surface of the rooster 26. Further, the combustion residue adhering to or dropping on the upper surface of the rooster 26 moves to the outer peripheral side of the rooster 26 by the gradient inclined to the outer peripheral side by the vibration and falls into the groove 46 of the rotating dish 45.

  The rotating dish 45 is intermittently rotated by the rotation driving device 40 as described above. For this reason, the combustion residue dropped in the groove 46 of the rotating dish 45 is blocked by the combustion residue stopper 51 in the groove 46. And collected on the front side of the rotation of the combustion residue stopper 51. When the rotating dish 45 further rotates and the through hole 48 formed in the groove 46 of the rotating dish 45 and the combustion residue discharge through hole 22 '' formed in the reduced diameter flange 22 'overlap, these holes are overlapped. The collected combustion residue passes through and falls onto the spiral screw of the screw conveyor 52 below. As described above, since the helical screw is rotated by a motor or the like, it is transported in the longitudinal direction of the helical screw and stored in a combustion residue storage body (not shown).

  When the raw material is combusted and recovered as a resin-based modifier and the raw material becomes insufficient, a predetermined amount of the raw material is charged into the combustion cylinder 24 from the raw material charging port and added.

  As described above in detail, in this embodiment, the air taken into the combustion furnace is supplied in a spiral and upward direction along the inner peripheral wall of the combustion cylinder so that the air from the outside is directly supplied to the combustion portion. can not touch. For this reason, the local temperature drop in the combustion furnace and the flame rampage are suppressed, the temperature in the combustion furnace can be easily controlled to a constant temperature, and a resin-based modifier with good quality can be provided. .

[Other Examples]
In the embodiment of the present invention, the combustion cylinder of the combustion furnace is configured by connecting a specific number of short cylindrical bodies in the axial direction, but the present invention is not limited to such a specific number, The number of short cylindrical bodies may be used, or a single unit may be used without being connected.

BRIEF DESCRIPTION OF THE DRAWINGS Whole sectional explanatory drawing which shows one Example of this invention. FIG. The other principal part disassembly sectional explanatory drawing of FIG. FIG. 3 is another exploded cross-sectional explanatory view of still another main part of FIG. 1. The principal part disassembled perspective view in one Example of this invention. The other principal part exploded sectional view in one example of the present invention. The other principal part exploded sectional view in one example of the present invention. The other principal part exploded sectional view in one example of the present invention. Cross-sectional explanatory drawing which shows an example of the prior art. The principal part perspective view at the time of operation | movement of an example of the past. The principal part perspective view at the time of other operation | movement of an example of the past. The principal part perspective view at the time of other operation | movement of an example of the past.

Explanation of symbols

20 Combustion furnace 21a Short cylindrical body 21b Short cylindrical body 21c Short cylindrical body 21d Short cylindrical body 21e Short cylindrical body 21f Short cylindrical body 21f 'Drive window 22 Flange 22' Reduced diameter flange 22 '' Combustion residue discharge through hole 23 Connector 24 Combustion cylinder 25 Lid 25 ′ Exhaust hole 26 Rostor 26 ′ Through hole 27 Second rooster 28 Hopper 30 Air intake device 31 Air introduction base 32 U-shaped groove 33 Air introduction nozzle 34 Air ejection part 35 Small diameter cylindrical body 36 Air ejection direction conversion Part 37 air outlet 38 intermediate cylinder 38 'slit 39 blade 40 rotation drive device 41 drive source 42 housing 43 action piece 45 rotating plate 45' inner peripheral wall 45 '' outer peripheral wall 46 groove 47 drive window 48 through hole 49 rotation Roller 50 Combustion residue discharge device 51 Combustion residue stopper 52 Screw conveyor 60 Reservoir tank 60 'Short cylindrical body

Claims (5)

  A part of the synthetic resin waste is burned in an oxygen-deficient state on the rooster located below the combustion cylinder, and the remaining part of the synthetic resin waste is melted and pyrolyzed by the burned heat. In a resin modifier manufacturing apparatus that takes out a wax-like melt melted from below and manufactures a resin modifier, a ring-shaped reduced-diameter flange that protrudes in the central axis direction of the combustion cylinder is provided below the combustion cylinder A combustion residue discharge through-hole penetrating vertically is formed in the reduced-diameter flange, and a ring-shaped concave groove is formed on the reduced-diameter flange, and a central penetration that vertically penetrates the inner peripheral side of the concave groove. A rotating dish having a hole is placed, a combustion residue discharge hole penetrating in the vertical direction is formed on the concave groove, and a bottom portion is arranged so as to slide on the concave groove as the rotating dish rotates. Combustion residue stopper is on the combustion cylinder side The roast is fixed on the rotating dish, the wax-like melt formed by melting and pyrolyzing on the rooster is taken out through the central through hole, and the combustion residue formed on the rooster is placed on the concave groove. The resin-based modifier production apparatus is characterized in that the combustion residue is taken out of the combustion cylinder through the combustion residue discharge hole and the combustion residue discharge through hole.   2. The rotating dish is formed with a plurality of driving windows penetrating the outer peripheral wall of the concave groove, and the rotating dish is rotated by engaging an operating piece with the driving window. Resin modifier manufacturing equipment.   The apparatus for producing a resin modifier according to claim 1 or 2, wherein a spiral screw is disposed below the combustion residue discharge through hole.   2. An air ejection port for ejecting upward air while spirally rotating air from outside is disposed in a combustion furnace in a portion above a combustion portion where synthetic resin waste is combusted. The apparatus for producing a resin modifier according to any one of claims 3 to 4.   The resin-based modifier according to any one of claims 1 to 4, wherein a receiving tank for storing the melted wax-like melt is disposed below the combustion furnace. Manufacturing equipment.