JPH1088150A - Raw material feeder for plastic pyrolytic vessel - Google Patents
Raw material feeder for plastic pyrolytic vesselInfo
- Publication number
- JPH1088150A JPH1088150A JP8262594A JP26259496A JPH1088150A JP H1088150 A JPH1088150 A JP H1088150A JP 8262594 A JP8262594 A JP 8262594A JP 26259496 A JP26259496 A JP 26259496A JP H1088150 A JPH1088150 A JP H1088150A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- plastic
- pyrolysis
- opening
- inert gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002994 raw material Substances 0.000 title claims abstract description 70
- 229920003023 plastic Polymers 0.000 title claims abstract description 57
- 239000004033 plastic Substances 0.000 title claims abstract description 57
- 239000003054 catalyst Substances 0.000 claims abstract description 38
- 239000011261 inert gas Substances 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 15
- 238000000197 pyrolysis Methods 0.000 claims description 70
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 13
- 238000005979 thermal decomposition reaction Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は廃プラスチック等の
プラスチックを熱分解するプラスチック熱分解槽へ、プ
ラスチックと熱分解触媒を供給する原料供給装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raw material supply apparatus for supplying plastic and a pyrolysis catalyst to a plastic pyrolysis tank for pyrolyzing plastic such as waste plastic.
【０００２】[0002]
【従来の技術】従来から廃プラスチック等のプラスチッ
クは熱分解槽で熱分解され、得られた油成分を資源とし
て回収することが行われている。熱分解槽はその上部に
プラスチックの投入口と油成分を含む生成ガス排出口、
底部に熱分解残渣の排出部を備え、さらに熱分解槽を取
り囲むように加熱炉が配置される。熱分解槽の投入口へ
プラスチックを投入するために原料投入器が用いられ
る。原料投入器は原料投入ホッパーとその出口部に連結
されたロータリバルブ等の移送手段を備え、プラスチッ
クの供給装置が第１開閉手段を介して原料投入ホッパー
の入口部に連結され、移送手段の出口部は第２開閉手段
を介して熱分解槽の投入口に連結される。2. Description of the Related Art Conventionally, plastics such as waste plastics have been pyrolyzed in a pyrolysis tank, and the obtained oil component has been recovered as a resource. The pyrolysis tank has a plastic inlet and a product gas outlet containing oil components at the top,
The bottom is provided with a discharge section for pyrolysis residues, and a heating furnace is arranged so as to surround the pyrolysis tank. A raw material input device is used to input plastic to the input port of the pyrolysis tank. The raw material charging device includes a raw material charging hopper and a transfer means such as a rotary valve connected to an outlet of the raw material charging hopper. A plastic supply device is connected to the inlet of the raw material charging hopper via the first opening / closing means. The unit is connected to the inlet of the pyrolysis tank via the second opening / closing means.
【０００３】このような原料投入器を用いて熱分解槽の
投入口へプラスチックを投入するには、先ず第１開閉手
段を一定時間開けて供給装置から所定量のプラスチック
を原料投入ホッパーへ投入し、次に第２開閉手段を開け
ると共に一定時間移送手段を駆動して原料投入ホッパー
のプラスチックを熱分解槽の投入口へ供給する。すなわ
ち２段式開閉手段によりプラスチックを供給装置から原
料投入器を介して熱分解槽の投入口へ順送りする方式で
ある。またプラスチックの熱分解効率を高める目的で、
所定割合の熱分解触媒をプラスチックに添加して熱分解
槽に投入することが多い。その他、熱分解槽の内部にあ
らかじめ触媒を供給しておくことも提案されている。In order to charge plastic into the inlet of the pyrolysis tank using such a material charging device, first, a first opening / closing means is opened for a predetermined time and a predetermined amount of plastic is charged from a supply device into a material charging hopper. Then, the second opening / closing means is opened, and the transfer means is driven for a certain period of time to supply the plastic of the material input hopper to the input port of the pyrolysis tank. That is, this is a method in which the plastic is sequentially fed from the supply device to the input port of the pyrolysis tank via the raw material input device by the two-stage opening / closing means. In order to increase the thermal decomposition efficiency of plastics,
In many cases, a predetermined ratio of a pyrolysis catalyst is added to a plastic and charged into a pyrolysis tank. In addition, it has been proposed to supply a catalyst to the inside of the pyrolysis tank in advance.
【０００４】[0004]
【発明が解決しようとする課題】しかし従来の装置を使
用した場合、プラスチックと熱分解媒体が別個独立して
熱分解槽に供給されるので、運転操作が煩雑になり、熱
分解媒体の分散性も良くなかった。また、あらじめ熱分
解槽内に触媒を供給しておく場合には、触媒が分解生成
物と反応して表面に炭化層を形成し、時間とともに触媒
活性が低下することが予想される。したがって、時間と
ともに油化効率が低下することになり、長時間の安定し
た運転が困難である。しかし従来の装置を使用した場
合、第２開閉手段を開けて原料投入ホッパーのプラスチ
ックを熱分解槽の投入口へ供給する際に、熱分解槽から
の高温の可燃性ガスが原料投入ホッパーや移送手段、お
よびそれらを連結する配管等に逆流し、発火する危険性
がある。また、それらの内部が高温になりプラスチック
が内壁に付着するという問題があった。そこで本発明は
これらの問題を解決する新しい原料供給装置を提供する
ことを課題とするものである。However, in the case of using the conventional apparatus, since the plastic and the pyrolysis medium are separately supplied to the pyrolysis tank, the operation becomes complicated, and the dispersibility of the pyrolysis medium is increased. Was not good either. When the catalyst is supplied into the thermal decomposition tank in advance, it is expected that the catalyst reacts with decomposition products to form a carbonized layer on the surface, and the catalyst activity decreases with time. Therefore, the oiling efficiency decreases with time, and it is difficult to perform long-time stable operation. However, when the conventional apparatus is used, when the second opening / closing means is opened and the plastic of the raw material input hopper is supplied to the input port of the thermal decomposition tank, the high-temperature flammable gas from the thermal decomposition tank is supplied to the raw material input hopper and transferred. There is a danger of backflow to the means and the piping connecting them and the like, causing ignition. Further, there has been a problem in that the inside of them becomes high temperature and the plastic adheres to the inner wall. Therefore, an object of the present invention is to provide a new raw material supply device that solves these problems.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決する本発
明の原料供給装置は、プラスチックの供給装置と、熱分
解触媒の供給装置と、原料投入器と、第１開閉手段及び
第２開閉手段を備えている。そしてプラスチックの供給
装置と熱分解触媒の供給装置の出口部が第１開閉手段を
介して原料投入器の入口部に連結され、原料投入器の出
口部が第２開閉手段を介して熱分解槽の投入口に連結さ
れ、さらに前記原料投入器内に不活性ガスを供給する不
活性ガス供給手段が設けられていることを特徴とするも
のである。According to a first aspect of the present invention, there is provided a raw material supply apparatus for supplying a plastic, a pyrolysis catalyst supply apparatus, a raw material input device, a first opening / closing means and a second opening / closing means. It has. The outlets of the plastic supply device and the pyrolysis catalyst supply device are connected to the inlet of the raw material input device via the first opening / closing means, and the outlet portion of the raw material input device is connected to the pyrolysis tank via the second opening / closing device. And an inert gas supply means for supplying an inert gas into the raw material input device.
【０００６】本発明の原料供給装置によれば、原料投入
器でプラスチックと熱分解触媒が混合され一体になって
熱分解槽に供給されるので、熱分解触媒はプラスチック
に良く分散されて供給される。しかも熱分解槽に新たに
供給されたプラスチックに熱分解触媒が比較的多く分散
される傾向にあるので、熱分解効率上好ましい。また、
供給装置によってプラスチックが原料投入器内に充填さ
れた後、不活性ガス供給手段によって原料投入器内を不
活性ガスで置換し、さらに供給を続けて熱分解槽の圧力
より高い状態で第２開閉手段を開くことによって、熱分
解槽からの高温の可燃性ガスが原料投入器内に逆流する
ことを極力防ぎ、原料投入器内の温度上昇をおさえ、発
火の危険性をなくすことができる。さらに、一般に熱分
解触媒は高温において分解生成物との反応によって表面
に炭化層を形成し、且つ装置内壁に付着し易い性質を有
する。本発明によれば新しい熱分解触媒をプラスチック
と混合して熱分解槽に供給してもこれらの問題を生じな
い。According to the raw material supply apparatus of the present invention, since the plastic and the pyrolysis catalyst are mixed and supplied integrally to the pyrolysis tank in the raw material input device, the pyrolysis catalyst is well dispersed and supplied to the plastic. You. Moreover, since the pyrolysis catalyst tends to be dispersed in a relatively large amount in the plastic newly supplied to the pyrolysis tank, it is preferable in terms of the pyrolysis efficiency. Also,
After the plastic is filled into the raw material input device by the supply device, the inside of the raw material input device is replaced with an inert gas by the inert gas supply means, and further supplied, and the second opening and closing is performed in a state higher than the pressure of the pyrolysis tank. By opening the means, high-temperature flammable gas from the pyrolysis tank is prevented from flowing back into the raw material input device as much as possible, the temperature rise in the raw material input device is suppressed, and the danger of ignition can be eliminated. Further, in general, a thermal decomposition catalyst has a property that a carbonized layer is formed on the surface by reaction with a decomposition product at a high temperature and easily adheres to the inner wall of the device. According to the present invention, these problems do not occur even if a new pyrolysis catalyst is mixed with plastic and supplied to the pyrolysis tank.
【０００７】[0007]
【発明の実施の形態】次に、図面により本発明の実施の
形態を説明する。先ず本発明の原料供給装置を適用する
プラスチックの熱分解装置を説明する。図２において、
筒状に形成された熱分解槽１は底部１ａが漏斗状とさ
れ、内部の攪拌と底部１ａに付着する残渣等の付着物を
掻き取るためのスクレーパ２が設けられる。底部１ａの
中央部から熱分解残渣を排出するためのフィーダケーシ
ング３が延長され、フィーダケーシング３内の設けられ
たスクリューフィーダ４の回転軸５上端部にスクレーパ
２が固定されている。回転軸５は正逆回転できる軸駆動
装置６により回転される。フィーダケーシング３の下部
には残渣排出用の配管が斜め下方に分岐され、バルブ７
を介して残渣排出タンク９に連結されている。なお８は
残渣排出タンク９の移動用キャスターである。熱分解槽
１の上部にプラスチックの投入口１０と熱分解生成ガス
を排出する生成ガス排出口１１が設けられ、投入口１０
は後述する本発明の原料供給装置２０が連結される。生
成ガス排出口１１から排出する生成ガスは配管１２を経
て冷却用熱交換器１３で冷却凝縮され、さらに油水分離
器１４で油分と水分に分離され、水分が配管１５から流
出し、油分が配管１６より回収される。熱分解槽１の周
囲に加熱炉１７が設けられ、その下部にバーナ等の燃焼
装置１８が設けられる。Next, an embodiment of the present invention will be described with reference to the drawings. First, a plastic pyrolysis apparatus to which the raw material supply apparatus of the present invention is applied will be described. In FIG.
The bottom 1a of the pyrolysis tank 1 formed in a cylindrical shape has a funnel shape, and is provided with a scraper 2 for stirring the inside and scraping off deposits such as residues adhering to the bottom 1a. A feeder casing 3 for discharging a pyrolysis residue is extended from a central portion of the bottom 1a, and a scraper 2 is fixed to an upper end of a rotary shaft 5 of a screw feeder 4 provided in the feeder casing 3. The rotating shaft 5 is rotated by a shaft driving device 6 that can rotate forward and backward. At the lower part of the feeder casing 3, a pipe for discharging the residue is branched obliquely downward, and a valve 7 is provided.
Is connected to the residue discharge tank 9 via the Reference numeral 8 denotes a caster for moving the residue discharge tank 9. An inlet 10 for plastic and a product gas outlet 11 for discharging pyrolysis product gas are provided at the upper part of the pyrolysis tank 1.
Is connected to a raw material supply device 20 of the present invention described later. The product gas discharged from the product gas outlet 11 is cooled and condensed by a cooling heat exchanger 13 via a pipe 12, further separated into oil and moisture by an oil / water separator 14, the moisture flows out from the pipe 15, and the oil is Collected from 16. A heating furnace 17 is provided around the pyrolysis tank 1, and a combustion device 18 such as a burner is provided below the heating furnace 17.
【０００８】次に、図１により本発明の原料供給装置の
実施例を説明する。原料供給装置２０は、プラスチック
の供給装置２１と、熱分解触媒の供給装置２２と、原料
投入器２３と、第１開閉手段２４及び第２開閉手段２５
を備えている。そしてプラスチックの供給装置２１と熱
分解触媒の供給装置２２の出口部が第１開閉手段２４を
介して原料投入器２３の入口部に連結され、原料投入器
２３の出口部が第２開閉手段２５を介して熱分解槽１の
原料投入口１０に連結され、さらに前記原料投入器２３
内に不活性ガスを供給する不活性ガス供給手段２６が設
けられている。Next, an embodiment of the raw material supply apparatus of the present invention will be described with reference to FIG. The raw material supply device 20 includes a plastic supply device 21, a pyrolysis catalyst supply device 22, a raw material input device 23, a first opening / closing unit 24 and a second opening / closing unit 25.
It has. The outlets of the plastic supply device 21 and the pyrolysis catalyst supply device 22 are connected to the inlet of the material input device 23 via the first opening / closing device 24, and the outlet portion of the material input device 23 is connected to the second opening / closing device 25. Is connected to the raw material input port 10 of the thermal decomposition tank 1 through the
An inert gas supply means 26 for supplying an inert gas into the inside is provided.
【０００９】プラスチックの供給装置２１はプラスチッ
クを細かく裁断してチップを貯蔵する裁断装置付ホッパ
ー２１ａと、該チップを移送する細長いスクリューフィ
ーダ２１ｂを有している。この場合、裁断装置付ホッパ
ー２１ａによって裁断された試料を一旦貯蔵容器に収容
し、これからスクリューフィーダ２１ｂで移送しても良
い。また、スクリューフィーダの代わりにオートローダ
のような空気で搬送する方式を用いることができる。な
お、この裁断装置付ホッパーは予め他の手段で裁断され
たプラスチックのチップを用いる場合には、裁断装置は
不要である。熱分解触媒の供給装置２２は、触媒収容槽
と触媒送出器を有している。熱分解触媒としては、ゼオ
ライト，シリカアルミナ，金属等の公知のものを使用す
ることができる。そしてプラスチックの供給装置２１の
出口と熱分解触媒の供給装置２２の出口は配管２７で第
１開閉手段２４に接続されている。原料投入器２３は原
料投入ホッパー２３ａとその出口側に連結された移送手
段２３ｂを有している。移送手段２３ｂは、熱分解槽か
らの熱影響に耐え得る耐熱性のモータ駆動式のロータリ
バルブ等が用いられる。The plastic supply device 21 has a hopper 21a with a cutting device for storing the chips by cutting the plastic finely, and an elongated screw feeder 21b for transferring the chips. In this case, the sample cut by the hopper with cutting device 21a may be temporarily stored in a storage container and then transferred by the screw feeder 21b. Further, instead of the screw feeder, a method of conveying by air such as an autoloader can be used. When a plastic chip cut in advance by another means is used in the hopper with a cutting device, the cutting device is not necessary. The thermal decomposition catalyst supply device 22 has a catalyst storage tank and a catalyst delivery device. As the thermal decomposition catalyst, known catalysts such as zeolite, silica alumina, and metal can be used. The outlet of the plastic supply device 21 and the outlet of the pyrolysis catalyst supply device 22 are connected to the first opening / closing means 24 by a pipe 27. The material input device 23 has a material input hopper 23a and a transfer means 23b connected to the outlet side thereof. As the transfer means 23b, a heat-resistant motor-driven rotary valve or the like that can withstand the thermal influence from the thermal decomposition tank is used.
【００１０】本例では、原料投入ホッパー２３ａ内に、
不活性ガス供給手段２６によって不活性ガスが供給され
る。この供給は例えば、窒素ガスのような不活性ガスが
図示しないガス供給源から配管２６ａを通り、供給弁２
６ｄの開放により原料投入ホッパー２３ａの内部に供給
される。原料投入ホッパー２３ａ内を不活性ガスで置換
する場合には、供給弁２６ｄを開け不活性ガスを原料投
入ホッパー内に供給すると共に、排気弁２６ｅを開けて
原料投入ホッパー内の空気あるいは可燃性ガスを外部に
放出する。不活性ガスによる置換後、排気弁２６ｅを閉
じて原料投入ホッパー内にに一定時間不活性ガスを供給
して加圧する。なお２６ｃは、原料投入ホッパー２３ａ
内の圧力が異常になった場合に作動する緊急用の逃がし
弁である。第１開閉手段２４及び第２開閉手段２５は例
えば自動開閉式ボールバルブが使用され、図示しない制
御装置からの指令により遠隔開閉操作される。[0010] In this example, in the raw material input hopper 23a,
The inert gas is supplied by the inert gas supply unit 26. This supply is performed, for example, by supplying an inert gas such as nitrogen gas from a gas supply source (not shown) through the pipe 26a to the supply valve 2.
By opening 6d, it is supplied to the inside of the raw material input hopper 23a. When replacing the inside of the raw material charging hopper 23a with the inert gas, the supply valve 26d is opened to supply the inert gas into the raw material charging hopper, and the exhaust valve 26e is opened to open the air or the flammable gas in the raw material charging hopper. To the outside. After the replacement with the inert gas, the exhaust valve 26e is closed, and the inert gas is supplied into the raw material charging hopper for a certain time to pressurize the material. 26c is a material input hopper 23a.
This is an emergency relief valve that operates when the internal pressure becomes abnormal. As the first opening / closing means 24 and the second opening / closing means 25, for example, an automatic opening / closing type ball valve is used, and remote opening / closing operation is performed by a command from a control device (not shown).
【００１１】原料投入ホッパー２３ａの入口側は配管２
８で第１開閉手段２４に接続され、移送手段２３ｂの出
口側は配管２９およびベローズ等の二重伸縮管からなる
伸縮自在の配管部３０により第２開閉手段２５に接続さ
れている。この伸縮自在の配管部３０は熱分解槽１から
の熱による配管系統の熱膨張を吸収するために設けられ
る。さらに第２開閉手段２５と熱分解槽１の原料投入口
１０は配管３１で接続されている。そしてこれら配管２
９、３１に設けた水ジャケットおよび伸縮自在の配管部
３０のジャケット部に配管３２による冷却水が供給さ
れ、熱分解槽１からの伝熱による温度上昇を低減し、さ
らにプラスチックや熱分解触媒の付着を防止する。なお
配管２９と配管３１はそれ自体を二重配管とし、その管
間に冷却水を通してもよい。The inlet side of the raw material input hopper 23a is connected to a pipe 2
At 8, it is connected to the first opening / closing means 24, and the outlet side of the transfer means 23 b is connected to the second opening / closing means 25 by a telescopic pipe part 30 composed of a pipe 29 and a double telescopic pipe such as a bellows. The telescopic piping section 30 is provided to absorb thermal expansion of the piping system due to heat from the pyrolysis tank 1. Further, the second opening / closing means 25 and the raw material input port 10 of the pyrolysis tank 1 are connected by a pipe 31. And these pipes 2
Cooling water is supplied by a pipe 32 to the water jackets provided on the pipes 9 and 31 and the jacket of the telescopic pipe section 30 to reduce the temperature rise due to the heat transfer from the pyrolysis tank 1 and further reduce the temperature of plastics and pyrolysis catalysts. Prevents adhesion. The pipe 29 and the pipe 31 may be double pipes themselves, and cooling water may be passed between the pipes.
【００１２】次に、上記原料供給装置２０の作用を説明
すると、先ず第１および第２開閉手段を閉じた状態で原
料投入ホッパー２３ａ内を不活性ガス供給手段２６によ
って置換する。その後、第１開閉手段２４を開け、プラ
スチックの供給装置２１と熱分解触媒の供給装置２２を
駆動することにより、プラスチックと熱分解触媒を原料
投入器２３の原料投入ホッパー２３ａに所定量供給す
る。それらの供給後、プラスチックの供給装置２１と熱
分解触媒の供給装置２２の駆動を停止すると共に、第１
開閉手段２４を閉じる。その後、不活性ガス供給手段２
６により再び原料投入ホッパー２３ａ内に不活性ガスを
供給して置換する。さらに一定時間不活性ガスを供給し
て加圧を行った後、第２開閉手段２５を開け更に移送手
段２３ｂを駆動して、原料投入ホッパー２３ａのプラス
チックと熱分解触媒を熱分解槽１の投入口１０へ送り出
す。その際、不活性ガス供給手段２６によって加圧され
た不活性ガスは熱分解槽側へ流れ、熱分解槽内と原料投
入ホッパー内の圧力が平衡状態になることによって熱分
解槽からの高温の可燃性ガスの逆流を極力防げることが
でき、原料投入ホッパー２３ａ内の温度上昇を防ぐこと
ができる。原料投入ホッパー２３ａ内のプラスチックと
熱分解触媒を原料投入口１０へ供給した後、第２開閉手
段２５を閉じることにより１回の供給操作が完了し、最
初の状態に戻る。Next, the operation of the material supply device 20 will be described. First, the inside of the material supply hopper 23a is replaced by the inert gas supply means 26 with the first and second opening / closing means closed. After that, the first opening / closing means 24 is opened, and the plastic supply device 21 and the pyrolysis catalyst supply device 22 are driven to supply a predetermined amount of the plastic and the pyrolysis catalyst to the raw material input hopper 23 a of the raw material input device 23. After the supply, the driving of the plastic supply device 21 and the pyrolysis catalyst supply device 22 is stopped, and the first
The opening / closing means 24 is closed. Then, the inert gas supply means 2
6, the inert gas is again supplied into the raw material input hopper 23a to perform replacement. Further, after pressurizing by supplying an inert gas for a certain period of time, the second opening / closing means 25 is opened and the transfer means 23b is driven, and the plastic in the material input hopper 23a and the pyrolysis catalyst are charged into the pyrolysis tank 1. Send out to mouth 10. At this time, the inert gas pressurized by the inert gas supply means 26 flows to the pyrolysis tank side, and when the pressures in the pyrolysis tank and the material input hopper are in an equilibrium state, the high temperature The backflow of the combustible gas can be prevented as much as possible, and the temperature rise in the raw material input hopper 23a can be prevented. After the plastic in the raw material input hopper 23a and the pyrolysis catalyst are supplied to the raw material input port 10, one supply operation is completed by closing the second opening / closing means 25, and returns to the initial state.
【００１３】[0013]
【発明の効果】以上のように構成した本発明の原料供給
装置は、原料投入器でプラスチックと熱分解触媒が混合
され一体になって熱分解槽に供給されるので、熱分解触
媒はプラスチックに良く分散されて供給される。しかも
熱分解槽に新たに供給されたプラスチックに熱分解触媒
が比較的多く分散される傾向にあるので、熱分解効率上
好ましい。また、原料投入器のプラスチックを熱分解槽
の投入口へ供給する際に、不活性ガス供給手段により原
料投入器内を加圧して第２開閉手段を開けた時に原料投
入器内の圧力を熱分解槽へ逃がすことによって、熱分解
槽からの高温の可燃性ガスの逆流を妨げ、温度上昇と発
火の危険性がない安定したプラスチック及び熱分解触媒
の供給が可能である。そして原料投入ホッパー内へのプ
ラスチックと熱分解触媒との供給後に、第１及び第２開
閉手段を閉じた状態で不活性ガス供給手段によって原料
投入器内を不活性ガスで置換することにより、原料投入
ホッパー内に残留する可燃性ガスよる発火の危険性を排
除することができる。さらに、一般に熱分解触媒は高温
において分解生成物との反応によって表面に炭化層を形
成し、且つ装置内壁に付着し易い性質を有する。本発明
によれば新しい熱分解触媒をプラスチックと混合して熱
分解槽に供給してもこれらの問題を生じない。According to the raw material supply apparatus of the present invention constructed as described above, the plastic and the pyrolysis catalyst are mixed and supplied integrally to the pyrolysis tank by the raw material input device. Supplied well distributed. Moreover, since the pyrolysis catalyst tends to be dispersed in a relatively large amount in the plastic newly supplied to the pyrolysis tank, it is preferable in terms of the pyrolysis efficiency. Further, when the plastic of the raw material input device is supplied to the input port of the thermal decomposition tank, the pressure in the raw material input device is increased by pressurizing the inside of the raw material input device by the inert gas supply means and opening the second opening / closing means. By escaping into the cracking tank, it is possible to prevent the backflow of the high-temperature flammable gas from the cracking tank and to supply a stable plastic and a cracking catalyst without risk of temperature rise and ignition. After the plastic and the pyrolysis catalyst are supplied into the raw material charging hopper, the raw material charging device is replaced with the inert gas by the inert gas supplying device with the first and second opening / closing devices being closed. The risk of ignition due to the combustible gas remaining in the charging hopper can be eliminated. Further, in general, a thermal decomposition catalyst has a property that a carbonized layer is formed on the surface by reaction with a decomposition product at a high temperature and easily adheres to the inner wall of the device. According to the present invention, these problems do not occur even if a new pyrolysis catalyst is mixed with plastic and supplied to the pyrolysis tank.
【図１】本発明の原料供給装置の１例を説明する図。FIG. 1 is a diagram illustrating an example of a raw material supply device according to the present invention.
【図２】図１の原料供給装置２０を使用するプラスチッ
クの熱分解装置の全体図。FIG. 2 is an overall view of a plastic pyrolysis apparatus using the raw material supply apparatus 20 of FIG.
１ 熱分解槽 １ａ 底部 ２ スクレーパ ３ フィーダケーシング ４ スクリューフィーダ ５ 回転軸 ６ 軸駆動装置 ７ バルブ ８ 移動用キャスター ９ 残渣排出タンク １０ 投入口 １１ 生成ガス排出口 １２ 配管 １３ 冷却用熱交換器 １４ 油水分離器 １５ 配管 １６ 配管 １７ 加熱炉 １８ 燃焼装置 ２０ 原料供給装置 ２１ プラスチックの供給装置 ２１ａ 裁断装置付ホッパー ２１ｂ スクリューフィーダ ２２ 熱分解触媒の供給装置 ２３ 原料投入器 ２３ａ 原料投入ホッパー ２３ｂ 移送手段 ２４ 第１開閉手段 ２５ 第２開閉手段 ２６ 不活性ガス供給手段 ２６ａ 配管 ２６ｂ 排出配管 ２６ｃ 逃がし弁 ２６ｄ 供給弁 ２６ｅ 排気弁 ２７ 配管 ２８ 配管 ２９ 配管 ３０ 伸縮自在の配管部 ３１ 配管 ３２ 配管 DESCRIPTION OF SYMBOLS 1 Pyrolysis tank 1a Bottom part 2 Scraper 3 Feeder casing 4 Screw feeder 5 Rotating shaft 6 Axis drive device 7 Valve 8 Transfer caster 9 Residue discharge tank 10 Input port 11 Generated gas discharge port 12 Pipe 13 Heat exchanger for cooling 14 Oil / water separation 15 Pipe 16 Pipe 17 Heating furnace 18 Combustion device 20 Raw material supply device 21 Plastic supply device 21a Hopper with cutting device 21b Screw feeder 22 Thermal decomposition catalyst supply device 23 Raw material input device 23a Raw material input hopper 23b Transfer means 24 First opening and closing Means 25 Second opening / closing means 26 Inert gas supply means 26a Pipe 26b Discharge pipe 26c Release valve 26d Supply valve 26e Exhaust valve 27 Pipe 28 Pipe 29 Pipe 30 Telescopic pipe section 31 Pipe 32 Pipe
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ０９Ｂ 3/00 ３０２Ａ (71)出願人 000003263 三菱電線工業株式会社 兵庫県尼崎市東向島西之町８番地 (71)出願人 000005120 日立電線株式会社 東京都千代田区丸の内二丁目１番２号 (71)出願人 000002255 昭和電線電纜株式会社 神奈川県川崎市川崎区小田栄２丁目１番１ 号 (71)出願人 390014568 東芝プラント建設株式会社 東京都港区西新橋３丁目７番１号 (72)発明者 伊東 亮一 静岡県浜松市新都田一丁目４番４号 社団 法人電線総合技術センター内 (72)発明者 津田 弘実 静岡県浜松市新都田一丁目４番４号 社団 法人電線総合技術センター内 (72)発明者 反町 正美 茨城県日立市日高町５丁目１番１号 日立 電線株式会社日高工場内 (72)発明者 椎名 利雄 茨城県日立市日高町５丁目１番１号 日立 電線株式会社パワーシステム研究所内 (72)発明者 福地 悦夫 茨城県日立市日高町５丁目１番１号 日立 電線株式会社パワーシステム研究所内 (72)発明者 平井 進 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 老後 哲朗 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 松尾 治彦 神奈川県川崎市川崎区小田栄２丁目１番１ 号 昭和電線電纜株式会社内 (72)発明者 小笠原 昌弘 東京都港区西新橋三丁目７番１号 東芝プ ラント建設株式会社内 (72)発明者 伊藤 幸裕 東京都港区西新橋三丁目７番１号 東芝プ ラント建設株式会社内──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI B09B 3/00 302A (71) Applicant 000003263 Mitsubishi Electric Wire & Cable Co., Ltd. 8-8 Nishinocho, Higashimukaijima, Amagasaki City, Hyogo Prefecture (71) Applicant 000005120 Hitachi Cable, Ltd. 2-1-2, Marunouchi, Chiyoda-ku, Tokyo (71) Applicant 000002255 Showa Electric Wire & Cable Co., Ltd. 2-1-1, Oda-Ei, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture (71) Applicant 390014568 Toshiba Plant Construction Co., Ltd. Co., Ltd. 3-7-1 Nishi-Shimbashi, Minato-ku, Tokyo (72) Inventor Ryoichi Ito 1-4-4 Shintoda 4-chome, Hamamatsu-shi, Shizuoka Pref. Inside the Electric Wire & Cable Technology Center (72) Inventor Hiromi Tsuda Hamamatsu-shi, Shizuoka 1-4-4 Shintoda Inside Electric Wire & Cable Technology Center (72) Inventor Masami Sorimachi 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture No. Hitachi Cable, Ltd. Hidaka Factory (72) Inventor Toshio Shiina 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture Power Systems Research Laboratory, Hitachi Cable Co., Ltd. (72) Inventor Etsuo Fukuchi Hidaka, Hitachi City, Ibaraki Prefecture 5-1-1, Hitachi-cho, Hitachi Cable, Ltd. Power Systems Research Laboratories (72) Inventor Susumu Hirai 2-1-1, Sakae Oda, Kawasaki-ku, Kawasaki, Kanagawa Prefecture, Japan Showa Electric Wire & Cable Co., Ltd. (72) Inventor Tetsuro Ogo Kanagawa Inside Showa Electric Wire & Cable Co., Ltd. 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City, Japan (72) Inventor Haruhiko Matsuo 2-1-1 Oda Sakae Kawasaki-ku, Kawasaki City, Kawasaki City, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (72) Invention Inventor Masahiro Ogasawara 3-7-1 Nishi-Shimbashi, Minato-ku, Tokyo Toshiba Plant Construction Co., Ltd. (72) Inventor Yukihiro Ito 3-7-1 Nishi-Shimbashi, Minato-ku, Tokyo Toshiba Plant Construction Co., Ltd.
Claims (4)
媒の供給装置２２、原料投入器２３、第１開閉手段２４
および第２開閉手段２５を備え、前記プラスチックの供
給装置２１と熱分解触媒の供給装置２２の各出口部が第
１開閉手段２４を介して原料投入器２３の入口部に連結
され、原料投入器２３の出口部が第２開閉手段２５を介
して熱分解槽１の投入口１０に連結され、さらに前記原
料投入器２３内に不活性ガスを供給する不活性ガス供給
手段２６が設けられているプラスチック熱分解槽の原料
供給装置。1. A supply device 21 for a plastic, a supply device 22 for a pyrolysis catalyst, a raw material input device 23, and a first opening / closing means 24.
And a second opening / closing means 25, wherein the outlets of the plastic supply device 21 and the pyrolysis catalyst supply device 22 are connected to the inlet of the raw material input device 23 via the first opening / closing device 24. The outlet of 23 is connected to the input port 10 of the pyrolysis tank 1 via the second opening / closing means 25, and further provided with an inert gas supply means 26 for supplying an inert gas into the raw material input device 23. Raw material supply device for plastic pyrolysis tank.
ａとその出口側に連結された移送手段２３ｂを有し、原
料投入ホッパー２３ａに不活性ガス供給手段２６からの
不活性ガスが導入されるように構成された請求項１に記
載のプラスチック熱分解槽の原料供給装置。2. The raw material input device 23 comprises a raw material input hopper 23.
2. The plastic pyrolysis according to claim 1, further comprising a transfer means 23b connected to the feed gas supply means 23a and an outlet side thereof, wherein the inert gas from the inert gas supply means 26 is introduced into the raw material input hopper 23a. Feeding equipment for the tank.
１０までの原料移送経路が冷却手段により冷却される請
求項２に記載のプラスチック熱分解槽の原料供給装置。3. The raw material supply device for a plastic pyrolysis tank according to claim 2, wherein the raw material transfer path from the transfer means 23b to the input port 10 of the pyrolysis tank 1 is cooled by the cooling means.
１０までの原料移送経路に伸縮自在の配管部３０を設け
た請求項３に記載のプラスチック熱分解槽の原料供給装
置。4. The raw material supply apparatus for a plastic pyrolysis tank according to claim 3, wherein a stretchable piping section 30 is provided in a raw material transfer path from the transfer means 23b to the input port 10 of the pyrolysis tank 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8262594A JPH1088150A (en) | 1996-09-11 | 1996-09-11 | Raw material feeder for plastic pyrolytic vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8262594A JPH1088150A (en) | 1996-09-11 | 1996-09-11 | Raw material feeder for plastic pyrolytic vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1088150A true JPH1088150A (en) | 1998-04-07 |
Family
ID=17377976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8262594A Pending JPH1088150A (en) | 1996-09-11 | 1996-09-11 | Raw material feeder for plastic pyrolytic vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1088150A (en) |
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| JP2002173548A (en) * | 2000-12-05 | 2002-06-21 | Toshiba Corp | Apparatus for treating waste plastic |
| JP2007009225A (en) * | 2006-09-19 | 2007-01-18 | Toshiba Corp | Apparatus for treating waste plastic |
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