JPH09100421A - Processing unit for carbon residue separated from solid-liquid separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing unit for carbon residue separated from the solid-liquid separator which can readily and promptly perform the final disposition treatment of the carbon residue containing the residual cracked oil continuously separated from the solid-liquid separator. SOLUTION: The cracked oil containing the carbon residue, occurring during the thermal cracking, is separated with the solid-liquid separator B into the thermally cracked oil and the carbon residue C containing residual cracked oil. The carbon residue C is allowed to fall on the surface 14a of the endlessly rotating belt 14 made of a thin metal plate. At the same time, the back surface opposing to the conveying surface of the endless belt 14 is jetted with a coolant to solidify the carbon residue conveyed on the conveying surface 14a by cooling. Then, the solidified carbon residue C is scraped off from the conveying surface 14a and crushed into small pieces with a scraper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating carbon residue separated by a solid-liquid separation apparatus used for oil treatment equipment for waste plastic materials.

[0002]

2. Description of the Related Art Conventionally, waste plastic material oil treatment equipment has been used to effectively utilize waste plastic material, and its processing flow will be briefly described below with reference to FIG. The waste plastic material that has been crushed into small pieces or reduced in volume to a certain size and temporarily stored in the waste plastic receiving tank 50 has an internal temperature of about 300 ° C due to the heat medium supplied from the heat medium oil circulation heating furnace 52 by the conveyor 51. It is conveyed into the extruder 53 that is heated to 1, and is liquefied and carried into the raw material mixing tank 54 that is heated to about 350 ° C. When the waste plastic material is heated to a high temperature in the extruder 53 and the raw material mixing tank 54, the chlorine contained therein becomes hydrogen chloride and is vaporized. Therefore, this vaporized component is passed through the hydrochloric acid neutralization tower 55 and neutralized by caustic soda. doing. The molten plastic carried out from the raw material mixing tank 54 is heated to about 400 ° C. and thermally decomposed by the thermal decomposition tank 56 to generate thermal decomposition oil vapor and thermal decomposition oil. In order to keep the temperature of the pyrolysis tank 56 at a high temperature, a pyrolysis oil circulation heating furnace 57 is provided, and a portion of the pyrolysis oil is circulated and heated. A solid-liquid separation device 58 is provided in a part of this circulation flow path to separate the carbon residue, which is a solid contained in the pyrolysis oil. The carbon residue described here is composed of carbon, heavy metals contained in plastics, and pyrolysis oil entrained therein, and has fluidity at about 150 ° C. The pyrolysis oil vapor generated by the pyrolysis in the pyrolysis tank 56 is supplied to the catalytic cracking tank 59 in which a catalyst such as zeolite is filled, and becomes a low molecular weight carbon-hydrogen compound. Pyrolysis oil vapor generated from contains a small amount of chlorine (hydrogen chloride),
A dehydrochlorination tank 60 filled with quicklime is provided to remove chlorine.

The hydrocarbon gas further decomposed by the catalytic cracking tank 59 is cooled by a total compressor 61 having the same structure as the heat exchanger, and becomes oil (total condensed oil) such as gasoline, kerosene or light oil. It is temporarily stored in the all-condensed oil receiving tank 62 and finally stored in the all-condensed oil storage tank 63. On the other hand, the total contractor 6
The gas that has not been liquefied even by 1 is sent to the catalytic cracking gas holder 65 by the fan 64, part of which is used as fuel for the thermal cracking oil circulation heating furnace 57 and the heating medium oil circulation heating furnace 52, and the other is burned. It is processed and released from the chimney 66 to the atmosphere. In addition, in Japanese Patent Laid-Open No. 6-328441,
Solid-liquid separation device 5 for separating carbon residue from pyrolysis oil generated in the pyrolysis tank 56 by pyrolysis of molten plastic in the above-mentioned waste plastic material oil treatment facility.
8, the solid-liquid separation device 58 is provided with a supply port 71 for pyrolyzed oil containing carbon residue in one of the centrifuges 70, as shown in FIG. A discharge port 72 for pyrolyzed oil after separation of carbon residue is provided on the side of the centrifuge 70, and the carbon residue separated in the lower part of the centrifuge 70 is at an ignition point of about 250 ° C. or lower and A water-cooled discharge device 73 for cooling to a fluidity of about 150 ° C. or higher is provided. With this configuration, carbon residue can be efficiently separated from pyrolyzed oil and can be continuously extracted, and caulking (clogged pipe) caused by carbon residue attached to the inner wall of the pipe can be prevented. can do.

[0004]

By the way, the carbon residue separated and discharged to the solid side by using the solid-liquid separation device 58 composed of the centrifugal separator 70 is directly received and stored in a container such as a drum can. There is. However, since this carbon residue contains unseparated residual pyrolysis oil,
It has the property of solidifying when cooled to room temperature. Therefore, when incinerating in an industrial waste incinerator for final treatment, it is troublesome to put the drums etc. into the incinerator as they are for disposal, or to cut the container and take out the solidified carbon residue to the outside. I had to call. Therefore, the container cannot be reused, resulting in a high processing cost and an increased space for storing the container. Also, depending on the scale of the industrial waste incinerator that incinerates the removed carbon residue, it is necessary to crush the carbon residue using a desired crushing device in order to put it in, and the work process until the final treatment becomes complicated. Was there. The present invention
In view of such circumstances, the final treatment of the carbon residue containing the residual pyrolysis oil continuously separated from the solid-liquid separator is easily and quickly performed, and the treatment cost is
An object of the present invention is to provide an apparatus for treating carbon residue separated by a solid-liquid separation apparatus, which can reduce equipment space.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
The carbon residue treatment device separated from the solid-liquid separation device described is a carbon residue treatment device separated from the solid-liquid separation device from pyrolysis oil containing carbon residue,
On the back surface side of the endless rotating belt made of a thin metal plate, a cooling medium jetting means is arranged at regular intervals, and a scraper is provided below the tip of the endless rotating belt.

[0006]

In the apparatus for treating carbon residue separated by the solid-liquid separator, the carbon residue separated from the pyrolysis oil by the solid-liquid separator is continuously removed from the thin metal plate by using a screw feeder or the like. The endless rotating belt drops onto the transport surface. The dropped carbon residue has fluidity and spreads in a band shape with a constant width and thickness on the moving and conveying surface. On the other hand, a cooling medium is jetted to the back surface side of the endless rotating belt which is the opposite side of the moving and conveying surface to cool and solidify the carbon residue moved on the moving and conveying surface, and then the carbon residue solidified by the scraper. Is separated from the curved peripheral surface of the terminal roller and crushed,
Cut the carbon residue into small pieces. This small piece of carbon residue is used as a solid fuel or incinerated as industrial waste. As one of the means for treating the cooling medium, water is jetted to the back side of the endless rotating belt using a discharge pump or the like to cool and solidify the carbon residue transferred on the moving and transporting surface, and the jetted water is also used. Is collected in a water tank using a collection pan or the like, and the collected water is sprayed again on the back side of the endless rotating belt by using a discharge pump or the like to remove carbon residue transferred on the moving and conveying surface. It is designed to cool and solidify. Further, as another cooling medium, air is jetted to the back side of the endless rotating belt by using a compressor or the like to cool and solidify the carbon residue transferred on the moving and conveying surface.

[0007]

As described above, in the carbon residue treating apparatus of the present application, the carbon residue separated from the pyrolysis oil by the solid-liquid separating apparatus falls on the endless rotating belt and moves on the moving and conveying surface. In the process, after the carbon residue is solidified by injecting a cooling medium to the back surface side of the endless rotating belt, it can be crushed into small pieces using a scraper, so that it is possible to treat the container such as a drum can with the conventional carbon residue treatment. The container can be reused without the need to incinerate or to cut the container to remove the carbon residue. Therefore, there is no need to buy containers one after another,
Equipment operating costs can be reduced. Further, since it is not necessary to store and prepare containers that are consumed one after another, the space required for the equipment can be significantly reduced. When using carbon residue as solid fuel,
In order to improve the combustion efficiency, it is necessary to keep the carbon residue in small pieces. In the conventional treatment, it was necessary to crush the carbon residue taken out of the container into small pieces, but in the device of the present invention, the carbon residue is discharged in the form of small pieces, so it can be easily used as a solid fuel. it can. In addition, instead of directly injecting the cooling medium to the carbon residue to solidify it, a so-called indirect solidification method is used in which it is indirectly solidified via an endless rotating belt, so there is no need to treat the cooling medium. Also in this respect, the final treatment of the carbon residue can be performed easily and quickly. Further, by circulating water as the cooling medium, the water can be used for cooling the carbon residue many times, and water can be saved. Furthermore, since air is used as the cooling medium, the post-injection water treatment facility required when water is used as the cooling medium is not required.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. Here, FIG. 1 is an overall front view of a carbon residue treatment apparatus that can be suitably used for a carbon residue treatment apparatus separated by the solid-liquid separation apparatus according to the first embodiment of the present invention, and FIG. It is the whole carbon residue processing equipment front view which can be conveniently used for the processing equipment of the carbon residue separated with the solid-liquid separation device concerning a 2nd embodiment of the invention.

As shown in FIG. 1, a carbon residue treatment apparatus A which can be suitably used for a carbon residue treatment apparatus separated by the solid-liquid separation apparatus according to the first embodiment.
Is disposed below the solid-liquid separator B including a centrifugal separator having a discharge device B1 at the bottom. Since the solid-liquid separation device B has the same configuration as the solid-liquid separation device 58 used in the description of the conventional technique in the present embodiment, the description of the internal structure of the solid-liquid separation device B will be given. Is omitted. First, the schematic configuration of the carbon residue treatment apparatus A will be described with reference to FIG. 1.
Is for spraying water to the back side of the endless rotating belt 14 in order to dry and solidify the endless rotating belt 14 having the moving and conveying surface 14a formed on the upper surface and the carbon residue C transferred on the moving and conveying surface 14a. An injection nozzle 17, which is an example of a cooling medium ejection means, and a scraper 25 provided at the end of the endless rotating belt 14 for peeling and crushing the solidified carbon residue C.
And a crushed carbon residue recovery tank 26. Hereinafter, the configuration of the carbon residue treatment apparatus A will be described in detail with reference to FIG. As shown in FIG. 1, the residue transporting section 10 which is a main part of the carbon residue processing apparatus A is disposed above the work floor surface 11 in a substantially horizontal state, and is disposed at intervals in the horizontal direction. Driving pulley 12 and driven pulley 1
3, an endless rotating belt 14 made of a thin metal plate wound between both pulleys 12 and 13, and a rotary drive source 16 interlockingly connected to the drive pulley 12 via a power transmission shaft 15. The endless rotation belt 14 has a moving and conveying surface 14a formed on the upper surface thereof, and the starting end of the moving and conveying surface 14a is located closer to the driven pulley 13 than the drop point of the carbon residue C from the solid-liquid separation device B. The end is substantially the installation position of the drive pulley 12. Here, the reason why the thin metal plate is used as the endless rotating belt 14 is that
The thin metal plate has good thermal conductivity in order to cool the carbon residue C moving on the moving / conveying surface 14a from the back surface side of the endless rotating belt 14, and the solid-liquid separation device B causes the endless rotating belt to move. Sufficient heat resistance to the high temperature carbon residue C falling on the moving and transporting surface 14a of the driving roller 14, and the driving side pulley 12 and the driven side pulley 13
This is because all the conditions such as being able to bend following the curvature of are satisfied. As the thin metal plate, a thin stainless steel plate or a copper plate can be preferably used in addition to a normal thin steel plate.

Next, the moving and conveying surface 1 of the endless rotating belt 14
A carbon residue cooling mechanism for cooling the carbon residue C moving on the 4a will be described below. As shown in FIG. 1, a plurality of injection nozzles 17 are arranged on the back surface side of the endless rotating belt 14 at predetermined intervals in the belt moving direction, and each injection nozzle 17 is connected to the main supply pipe 18. The water tank 19 is communicated and connected through a plurality of branch supply pipes 18a. A filter 20 and a discharge pump 21 are attached to the main supply pipe 18, and each branch pipe 18
An electromagnetic opening / closing valve 22 is attached to a. further,
Below the plurality of injection nozzles 17, the endless rotating belt 14 is provided.
A recovery pan 23 for recovering the entire amount of the sprayed water is provided on the back surface side of the recovery pan 23, and the recovery pan 23 is connected to the water tank 19 by a return pipe 24. Further, a scraper 25 is arranged at a position in front of the circumferential surface of the driving pulley 12 of the endless rotary belt 14.
The scraping portion 25a of the scraper 25 is in contact with the upper surface of the endless rotating belt 14 which is on the revolving surface of the driving pulley 12. On the other hand, below the scraper 25,
A crushed carbon residue recovery tank 26 for recovering the crushed carbon residue C1 of the small pieces scraped off by the scraper 25 is provided.

Next, an apparatus for treating carbon residue separated by the solid-liquid separation apparatus by the carbon residue treatment apparatus A having the above-mentioned structure will be described with reference to FIG. The carbon residue C separated from the pyrolysis oil by the operation of the solid-liquid separating device B is continuously dropped from the discharging device B1 onto the moving and conveying surface 14a of the endless rotating belt 14 made of a thin metal plate. The carbon residue C that has fallen is still about 1
Since the temperature is 50 ° C. or higher, it has fluidity and spreads on the moving and conveying surface 14a in a thin strip shape with a constant width. At the same time, the discharge pump 21 is activated to activate the water tank 19
The water sucked from the main supply pipe 18 and the branch supply pipe 18
It is supplied to a plurality of jet nozzles 17 through a, and water is jetted from the jet nozzles 17 toward the back surface of the endless rotating belt 14 which is the surface opposite to the moving and conveying surface 14a, and moves on the moving and conveying surface 14a. The carbon residue C is cooled and solidified. At this time, since the endless rotating belt 14 uses a thin metal plate having good thermal conductivity, the heat retained by the carbon residue C can be effectively and rapidly removed by water, and the carbon residue C can be solidified. You can By adjusting the number of electromagnetic on-off valves 22 to be operated and the opening / closing amount of each electromagnetic on-off valve 22, the moving conveyance surface 1 of the endless rotating belt 14 is adjusted.
The injection amount of water required for cooling can be adjusted according to the treatment amount of the carbon residue C falling on the 4a. next,
The carbon residue C solidified in the shape of a thin belt or a thin plate is transferred to the driving pulley 12 which is the terminal pulley of the endless rotating belt 14 on the moving and conveying surface 14a of the endless rotating belt 14. Thereafter, the scraper 25 separates the carbon residue C from the curved moving conveyance surface 14 a located on the peripheral surface of the driving pulley 12, and receives a compressive force and an impact force due to the collision with the scraper 25. Since the solidified carbon residue C has brittleness that can be easily broken by a compressive force or an impact force, the scraper 25
As a result, the carbon residue C is crushed into small pieces. The crushed carbon residue C1 composed of small pieces is collected in the crushed carbon residue recovery tank 26, and then used as a solid fuel or incinerated as industrial waste.

As described above, in the carbon residue treatment apparatus separated by the solid-liquid separation apparatus according to the first embodiment, the container such as the drum can is incinerated as in the conventional carbon residue treatment, or It is not necessary to cut the container to take out the carbon residue C, and the container can be reused. Therefore, there is no need to buy containers one after another,
Equipment operating costs can be reduced. Further, since it is not necessary to store and prepare containers that are consumed one after another, the space required for the equipment can be significantly reduced. Furthermore, when the carbon residue C is used as a solid fuel, it is necessary to make the carbon residue C into small pieces in order to improve combustion efficiency. In the conventional treatment, it was necessary to crush the carbon residue taken out from the container into small pieces, but in the apparatus of the present invention, the carbon residue C is discharged in the form of small pieces, so it can be easily used as a solid fuel. You can Further, since the so-called indirect solidification method is adopted in which water is not directly sprayed onto the carbon residue C to solidify it but indirectly solidified via the endless rotation belt 14, water treatment such as drainage can be performed. It is not necessary, and also in this respect, the final treatment of the carbon residue C can be performed easily and quickly. Further, in the carbon residue treatment apparatus separated by the solid-liquid separation apparatus according to the first embodiment, the endless rotary belt 14 forming a surface opposite to the moving and conveying surface 14a from the injection nozzle 17 is used as a cooling medium. The water jetted toward the back surface is collected in the water tank 19 through the collection pan 23 and the return pipe 24, and thereafter, the collected water is moved again using the discharge pump 21 and the jet nozzle 17 to move the transport surface 1.
The carbon residue C, which is sprayed toward the back surface of the endless rotary belt 14 forming the surface opposite to the surface 4a, is cooled and solidified. Thus, by circulating water as the cooling medium, the water can be used for cooling the carbon residue C many times, and water can be saved.

FIG. 2 shows a carbon residue treatment apparatus D which can be suitably used as a treatment apparatus for carbon residue separated by the solid-liquid separation apparatus according to the second embodiment.
The carbon residue treatment apparatus D is substantially characterized in that the carbon residue cooling mechanism shown in FIG. 1 is of an air injection type. Note that the same elements as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. That is, as shown in FIG. 2, on the back surface side of the endless rotating belt 14, a plurality of injection nozzles 30 as an example of the ejection means of the cooling medium are arranged at predetermined intervals in the belt moving direction, Each injection nozzle 3
0 is connected to the compressor 33 through a main supply pipe 31 and a plurality of branch supply pipes 32. An electromagnetic opening / closing valve 34 is attached to each branch supply pipe 32. Also in the carbon residue treatment apparatus separated by the solid-liquid separation apparatus according to the second embodiment, the compressor 33 is operated to supply air to the plurality of injection nozzles 30 through the main supply pipe 31 and the branch supply pipe 32. Then, air is jetted from the jet nozzle 30 toward the back surface of the endless rotating belt 14 that is the surface opposite to the moving and conveying surface 14a, and the carbon residue C moving on the moving and conveying surface 14a.
After cooling and solidifying, the carbon residue C can be crushed by the scraper 25, and the carbon residue C can be crushed into small pieces.

As described above, also in the apparatus for treating carbon residue separated by the solid-liquid separation apparatus according to the second embodiment, the container such as the drum can is incinerated like the conventional carbon residue treatment, or The container can be reused without the need to cut the container to take out the carbon residue C. Therefore, it is not necessary to purchase the containers one after another, and the facility operation cost can be reduced. Further, since it is not necessary to store and prepare containers that are consumed one after another, the space required for the equipment can be significantly reduced. Furthermore, when the carbon residue C is used as a solid fuel, it is necessary to make the carbon residue C into small pieces in order to improve combustion efficiency. In the conventional treatment, it was necessary to crush the carbon residue taken out from the container into small pieces, but in the apparatus of the present invention, the carbon residue C is discharged in the form of small pieces, so it can be easily used as a solid fuel. You can In addition, since the so-called indirect solidification method is adopted in which water is not directly sprayed directly onto the carbon residue C to solidify, but indirectly solidifies via the endless rotating belt 14, water treatment of wastewater and the like is adopted. Is unnecessary, and also in this respect, the final treatment of the carbon residue C can be performed easily and quickly. Further, as compared with the case where water is used as the cooling medium, there is no need for a means for treating the blast air, so that equipment costs can also be reduced in that respect.

[Brief description of the drawings]

FIG. 1 is an overall front view of a carbon residue treatment apparatus used in a treatment apparatus for carbon residue separated by a solid-liquid separation apparatus according to a first embodiment of the present invention.

FIG. 2 is an overall front view of a carbon residue treatment device used in a treatment device for carbon residue separated by a solid-liquid separation device according to a second embodiment of the present invention.

FIG. 3 is a processing flow chart of a conventional oil treatment equipment for waste plastic materials.

FIG. 4 is a conceptual front sectional view of a solid-liquid separation device in the oil treatment facility.

[Explanation of symbols]

A carbon residue treatment device B solid-liquid separation device B1 discharge device C carbon residue C1 carbon residue D carbon residue treatment device 10 residue transfer unit 11 work floor surface 12 driving side pulley 13 driven side pulley 14 endless rotating belt 14a moving transfer surface 15 power transmission shaft 16 rotary drive source 17 injection nozzle 18 main supply pipe 18a branch supply pipe 19 water tank 20 filter 21 discharge pump 22 electromagnetic opening / closing valve 23 recovery pan 24 return pipe 25 scraper 25a scraping part 26 crushed carbon residue recovery tank 30 Injection nozzle 31 Main supply pipe 32 Branch supply pipe 33 Compressor 34 Electromagnetic on-off valve

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hideo Nishiyama Inventor Hideo Nishiyama 46-59 Nakahara, Tobata-ku, Kitakyushu, Fukuoka Japan Nippon Steel Corporation Machinery & Plant Division

Claims (1)

[Claims] 1. A device for treating carbon residue, which is separated from a pyrolysis oil containing carbon residue by a solid-liquid separation device, wherein the end face of an endless rotating belt made of a thin metal plate is provided with:
An apparatus for treating carbon residue separated from a solid-liquid separation apparatus, characterized in that a cooling medium jetting means is arranged at regular intervals, and a scraper is provided below the tip of the endless rotating belt.