JP2004211928A - Recycling method for golf ball - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recycling method for golf balls capable of preventing refractories at the bottom part of an incineration furnace from being damaged in the treatment of the golf balls in the incineration furnace. <P>SOLUTION: In this recycling method for the golf balls, waste plastic is thrown into the vertical waste incinerator from the top thereof, and the golf balls 2 are thrown in order, separately from the waste plastic, in a combustion area at the lower part of the incinerator. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a golf ball recycling method.
[0002]
[Prior art]
Golf balls have a thread wound structure in the old days, but recently, a three-piece or four-piece structure made of resin such as nylon, urethane, polyester, or rubber or rubber is often used.
[0003]
The composition of a golf ball is, for example, an ionomer, a thermoplastic elastomer, titanium oxide, barium sulfate or the like (Patent Document 1), and is composed of an organic polymer or an inorganic compound, but the main component is an organic polymer such as rubber or plastic. .
[0004]
In general, plastic recycling is roughly classified into material recycling, heat recycling, and chemical recycling (Non-Patent Document 1, pages 1006 to 1009).
[0005]
The affiliated company of the present applicant uses an incinerator whose outline is introduced on pages 1117 to 1118 of Non-Patent Document 1, and recycles waste plastic and sludge using waste oil and recycled heavy oil as main fuels. Among them, 50 to 60 golf balls to be discarded were mixed with waste plastic and charged into an incinerator. As a result, the temperature of the furnace bottom immediately after the charging increased sharply.
[0006]
[Patent Document 1]
JP-A-11-28258
[0007]
[Patent Document 2]
Japanese Utility Model Registration No. 3046166
[Non-patent document 1]
Journal of Natural Resources and Materials, `` Resources and Materials '' 1997, Vo.113 (No.12)
[0009]
[Problems to be solved by the invention]
Since there has been no proposal for recycling a golf ball to be discarded, the present applicant has applied a plastic thermal recycling technique to mix with waste plastic and tried recycling.
[0010]
Since waste plastics have a low bulk density, the temperature inside the incinerator rises relatively little even when they are introduced from the top of the incinerator. However, generally, when 50 to 60 golf balls having an outer diameter of about 40 mm and a specific gravity of just over 1 were thrown in at once, the temperature was significantly increased. Also, golf balls mixed with waste plastics have a high specific gravity, and are small in size and easy to roll, so that they fall more easily into the furnace bottom than plastics, which further promotes a local temperature rise. Will be. As a result, the refractory at the bottom of the furnace was damaged, making efficient recycling impossible.
[0011]
[Means for Solving the Problems]
The present invention has been made in view of the above-described problems, and in addition to throwing waste plastic from the top of a vertical waste incinerator, golf balls, separately from waste plastics, are sequentially thrown into a combustion area at the bottom of the incinerator. A feature of the present invention is to provide a golf ball recycling method.
In order to prevent local temperature rise caused by the conventional method of mixing and mixing waste plastics and golf balls, on-site experiments were carried out and the following means were found to be effective.
(B) Golf balls shall be introduced separately from waste plastics generated from OA equipment, home appliances, automobiles, etc. Since they are different in size and specific gravity, when mixed, the descent speed is different and the combustion situation becomes unstable. That is, the golf ball in the charge falls at once, and the remaining waste plastic descends slowly. This situation is repeated many times, and as a result, the temperature fluctuates in a pulsating manner.
(B) A sudden increase in temperature is suppressed by successively inserting a large amount of golf balls instead of throwing them all at once.
(C) Instead of charging from the top of the furnace, by charging the combustion area below the incinerator, combustion can be promoted. That is, since the combustion area has a large volume occupied by the gas, there are few things that hinder the movement of the inserted golf ball. The combustion region is a region where the temperature is the highest, and generally has a temperature of 1000 to 1200C.
Hereinafter, preferred embodiments of the present invention will be described.
[0012]
When a golf ball is inserted through a tube having a diameter larger than the diameter of the golf ball, penetrating the side wall of the vertical waste incinerator, the golf balls can be thrown into the furnace one by one through the tube. The combustion situation can be stabilized.
When the present inventors observed the furnace condition visually and with an optical pyrometer, the charged golf ball stayed on the unburned material and a high temperature region about three times the diameter of the golf ball was generated for a while. Therefore, it has been found that when the golf balls are intensively thrown in here, the furnace temperature rises remarkably. Therefore, when two or more golf balls are inserted at the same time, it is preferable that the golf balls are dispersed and input so as to avoid the above-described region. It may be continuously supplied.
[0013]
The weight per hour of the waste plastic is preferably at least 1.5 times that of the golf ball. As the relative amount of the golf ball increases, the life of the refractory of the incinerator decreases.
[0014]
It is preferable that the golf ball is thrown in from one or more places on the furnace side wall. This is because a large amount of processing can be performed. However, it is desirable to take care that the golf balls are dispersed in the furnace. This is in order to avoid a high temperature in the local area.
[0015]
When one or two types of waste oil or regenerated heavy oil are injected into the lower part of the furnace by one or two or more burners in the combustion area, the effective use of these oils can be achieved at the same time.
[0016]
For large-volume unmanned processing, it is preferable to put a large number of golf balls into the hopper once, and then to put a fixed amount of one or more golf balls through the tube.
In this case, in order to insert the golf balls one by one, it is preferable to provide a sending means for sending the golf balls one by one to the pipe between the hopper and the pipe. As this means, an apparatus disclosed in Patent Document 2 proposed for sending a ball to a ball mill can be used. However, since this device has a complicated structure and is difficult to use in an environment where the temperature is high and the amount of dust is high, the present inventors set the opening at the lower end of the hopper and one golf ball-sized opening. A device having a turntable and a bottom plate that has one golf ball-sized opening at the position of the chute and closes the bottom of the turntable was devised and used for an actual machine. Further, the sending means has a driving means for rotating the turntable by a rotating shaft rotatably penetrating the bottom plate, and the two through-holes communicate once to send the golf ball once while the turntable makes one rotation. .
[0017]
In order to simultaneously input two or more units, two or more units described above may be installed. In this case, the exit direction of the tube is adjusted so that the tube falls to the scattered position.
In addition, only one of the above devices is installed, two or more tubes having a diameter of a golf ball are opened in the turntable, and two or more through holes are formed in the turntable, so that the turntable has a predetermined angle. When these are rotated, these through-holes and the pipe are connected.
[0018]
By stirring the golf ball in the hopper by the protrusion provided on the turntable upward, the movement from the hopper to the turntable can be performed smoothly.
Further, if necessary, when the driving means is rotated forward and backward, the golf ball is constantly vibrated and rocked in the hopper, so that the golf ball is smoothly moved to the turntable and clogging is prevented. The reverse rotation of the driving means may be performed only when overload occurs.
[0019]
[Action]
In the present invention, golf balls having different sizes and specific gravities and waste plastic are separately charged to stabilize the descent of the charge. A sudden increase in temperature is suppressed by successively charging a large amount of golf balls, instead of being injected all at once. On the other hand, the golf balls are immediately burned by being charged into a combustion area below the incinerator. As described above, the means for stabilizing the descent of the material in the incinerator and the means for promoting and suppressing the combustion are used in combination.
Hereinafter, the present invention will be described in detail with reference to examples.
[0020]
【Example】
The vertical incinerator has a height of about 10m and operates at the following basic unit.
Waste liquid (waste acid + waste alkali) 3300 l / h
Waste oil 200 l / h
Waste plastic 100kg / h
Sludge 290 / h
Regenerated heavy oil 330kg / h
Golf ball 60kg / h
[0021]
Waste plastics are fed from the top of the furnace by a fixed amount cutting screw, waste liquid and waste oil are sent by a pump, and the air / liquid two-fluid spray nozzle is downward from the height of about 4 m from the furnace bottom at an angle of 45 °. Sprayed. The sludge was sent to the furnace top with a sludge pump and sprayed into the furnace with air. The regenerated heavy oil was fed by a gear pump and injected by a burner at the same position as the waste liquid and waste oil. Golf balls were injected at a rate of 45 ° downward from a waste liquid / waste oil nozzle input level at a rate of one every 2.5 seconds.
[0022]
1 and 2 show an embodiment of a golf ball throwing device.
A large number of golf balls 2 are put in a hopper 1, and a turntable 3 is arranged at a lower end of the hopper 1 squeezed in a funnel shape with a slight gap. The turntable 3 is a disk having a golf ball-sized through-hole 3a, and is fixed to the rotating shaft 4 at an eccentric position. A bottom plate 5 is provided at the lower end of the turntable 3, and the bottom plate 5 also has a through hole 5a of a size of a golf ball. In other places, the turntable 3 is rotatably closed from below. The shaft 4 is penetrated. Reference numeral 6 denotes a tube for dropping the golf ball into the incinerator, which is always in communication with the through hole 5a. 7 is a reduction gear, and 8 is a motor.
Numeral 9 denotes a protrusion fixed to the turntable, which constantly adjusts the position of the golf ball 2 so that the golf ball does not become entangled.
[0023]
【The invention's effect】
As described above, the following effects are achieved by the present invention.
(A) Using a golf ball input device, it was possible to input a fixed amount of balls little by little, and at the same time, unmanned input was possible.
(B) The refractory at the bottom of the incinerator can be prevented from being damaged by rapid combustion of the golf ball.
(C) The heat cost of the incinerator can be reduced by thermally recycling the golf ball.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a golf ball input device.
FIG. 2 is a plan view of the golf ball input device.
[Explanation of symbols]
1-hopper 2-golf ball 3-turntable

Claims (12)

A method of recycling golf balls, wherein waste plastics are charged from the top of a vertical waste incinerator, and golf balls are sequentially charged into a combustion area below the incinerator separately from the waste plastics. . 2. The method of recycling a golf ball according to claim 1, wherein the golf ball is introduced by a tube penetrating a side wall of the vertical waste incinerator and having an inner diameter larger than a diameter of the golf ball. 3. The golf ball recycling method according to claim 2, wherein a weight per hour of the waste plastics is 1.5 times or more of the golf ball. 4. The golf ball recycling method according to claim 1, wherein the golf ball is introduced from a tube penetrating the furnace side wall at one or more locations. The golf ball according to any one of claims 1 to 4, wherein the combustion region is formed by injecting one or two kinds of waste oil or regenerated heavy oil from one or more nozzles into a lower portion of the furnace. Recycling law. 6. A golf ball according to any one of claims 1 to 5, wherein a large number of golf balls are once put into a hopper, and then two or more golf balls are simultaneously spread and thrown through the tube or thrown into substantially the same place one by one. Golf ball recycling law. 7. The golf ball recycling method according to claim 6, further comprising a sending means for sending the golf ball to the tube between the hopper and the tube. A turntable located at the lower end of the hopper and having one golf ball-sized opening; and a golf ball-sized opening at the position of the tube, and a bottom portion of the turntable. 8. The method according to claim 7, further comprising a bottom plate for closing the golf ball. Two or more pipes are provided so as to point to a diverging position in a combustion region, and the delivery means is located at a lower end of the hopper and has two or more golf ball-sized openings, and a turntable, The method according to claim 7, further comprising a bottom plate having at least one golf ball-sized opening at each position of the tube and closing a bottom of the turntable. 10. The golf ball recycling method according to claim 8, wherein the sending means further includes a driving means for rotating the turntable by a rotating shaft which rotatably penetrates the bottom plate. The golf ball recycling method according to any one of claims 7 to 10, wherein clogging of the golf ball in the hopper is prevented by a projection provided on the turntable upward. The golf ball recycling method according to any one of claims 7 to 11, wherein the driving means is capable of normal rotation and reverse rotation.

Images