JP2018023946A - Pyrolysis equipment - Google Patents
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Abstract
Description
本発明は、例えば、スクラップ金属や炭素繊維強化プラスチック（ＣＦＲＰ）などの被処理材料に付着した可燃物を熱分解させるとともに可燃物を燃焼した熱量を利用する熱分解装置に関するものである。 The present invention relates to a pyrolysis apparatus that thermally decomposes a combustible material adhering to a material to be treated such as scrap metal or carbon fiber reinforced plastic (CFRP) and uses the amount of heat generated by combusting the combustible material.
従来、スクラップ金属を、傾けた状態で配置された回転炉の中に入れて表面に付着した汚染物を加熱されたガスを利用して除去する熱処理装置が知られている（例えば、特許文献１参照）。
この装置は、回転炉を外筒と内筒からなる二重円筒状にしたもので、高位置となる回転炉の後方からスクラップ金属を回転炉の外筒側に供給するとともに、ガスを回転炉の後方の内筒に流し、回転炉の前方でガスの流れを外側に向けて折り返して回転炉の内筒から外筒に流して外筒内でスクラップ金属に直接的に接触させるものである。
その後、ガスはファンの働きを受けて煙道を通り炉外に送り出されるようになっている。
2. Description of the Related Art Conventionally, there has been known a heat treatment apparatus for removing scrap metal by putting it in a rotary furnace arranged in an inclined state and removing contaminants attached to the surface using a heated gas (for example, Patent Document 1). reference).
In this device, the rotary furnace is made into a double cylindrical shape consisting of an outer cylinder and an inner cylinder, and scrap metal is supplied to the outer cylinder side of the rotary furnace from the rear of the rotary furnace at a high position, and gas is supplied to the rotary furnace. The gas flow is turned to the outside in the front of the rotary furnace, and the gas flow is turned outward from the inner cylinder of the rotary furnace to the outer cylinder to directly contact the scrap metal in the outer cylinder.
After that, the gas is sent out of the furnace through the flue under the action of the fan.
しかしながら、特許文献１に記載の発明では、回転炉内を流れるガスは内筒から外筒に折り返されるようにして流れるため内筒と外筒におけるガス量は同じである。
このため、回転炉の外筒で直接的にスクラップ金属に接触するガスと、回転炉の内筒側で間接的にスクラップ金属に熱を与えるガスの流量を個別に制御して精度の高い熱分解を行うことはできないといった問題がある。
However, in the invention described in Patent Document 1, the gas flowing in the rotary furnace flows so as to be folded from the inner cylinder to the outer cylinder, and therefore the gas amount in the inner cylinder and the outer cylinder is the same.
For this reason, high-accuracy pyrolysis is achieved by separately controlling the flow rate of the gas that directly contacts the scrap metal at the outer cylinder of the rotary furnace and the gas that indirectly heats the scrap metal at the inner cylinder side of the rotary furnace. There is a problem that cannot be done.
ここで、回転炉内に送られるガスは、スクラップ金属やCFRPを加熱する熱源としての機能と、これらの被処理材料に付着している可燃物を回転炉内で燃焼させることなく熱分解させるための保護雰囲気の機能を持つ。そして、加熱能力を確保するには、加熱源としてのガス量を充分に確保する必要がある。
一方で、被処理材料には風で飛ばされやすい微少片も存在しており、当該微少片に直接当てる風速には制約がある。
Here, the gas sent into the rotary furnace functions as a heat source for heating scrap metal and CFRP, and because the combustible material adhering to these materials to be processed is pyrolyzed without burning in the rotary furnace. With a protective atmosphere function. And in order to ensure a heating capability, it is necessary to ensure sufficient gas amount as a heating source.
On the other hand, there are minute pieces that are easily blown away by the wind in the material to be treated, and the wind speed directly applied to the minute pieces is limited.
そこで、本発明の目的とするところは、熱源としてのガス流量と保護雰囲気としてのガス流量を独立して設定可能な構造とし、可燃物が付着した被処理材料を高精度で効率的に加熱すると共に、適正な保護雰囲気流量で可燃物を熱分解することのできる熱分解装置を提供することにある。 Therefore, the object of the present invention is to have a structure in which the gas flow rate as the heat source and the gas flow rate as the protective atmosphere can be set independently, and the material to be treated to which the combustible material adheres is efficiently heated with high accuracy. Another object is to provide a thermal decomposition apparatus capable of thermally decomposing combustible materials at an appropriate protective atmosphere flow rate.
上記の目的を達成するために、本発明の請求項１に記載の熱分解装置は、可燃物が付着した被処理材料（１００）が投入される投入口（１１）が後方に設けられ、前方には前記被処理材料（１００）が排出される排出口（１２）が設けられるとともに、後方の高さが前方の高さよりも高くなるように傾けられた、外筒（１３）と内筒（１４）からなる二重円筒状で回転可能な回転炉（１０）と、前記回転炉（１０）を回転させる回転駆動機構（２０）を、備える熱分解装置であって、
取り込まれたガス（２００）を加熱して出力するガス加熱装置（３０）と、
前記回転炉（１０）の後方から排出されるガス（２００）を前記ガス加熱装置（３０）に送り込む第一ダクト（４１）と、
前記ガス加熱装置（３０）で加熱されたガス（２００）を前記回転炉（１０）側に送る第二ダクト（４２）と、
前記第二ダクト（４２）の端部から分岐して前記回転炉（１０）の前方から前記外筒（１３）及び前記内筒（１４）にそれぞれ接続された外筒供給用ダクト（４２Ａ）及び内筒供給用ダクト（４２Ｂ）と、
前記外筒供給用ダクト（４２Ａ）と前記内筒供給用ダクト（４２Ｂ）の接続位置付近に設けられ、前記外筒（１３）側に流れるガス量と前記内筒（１４）側に流れるガス量の割合を調整する制御機構（５０）と、
前記制御機構（５０）の開度を決定する流量制御装置（５１）を備え、
前記被処理材料（１００）が投入される投入口（１１）を、前記回転炉（１０）の後方の内筒（１４）側に設け、前記被処理材料（１００）を前記回転炉（１０）の後方から前方に内筒（１４）を通じて供給するようにしたことを特徴とする。
In order to achieve the above object, the thermal decomposition apparatus according to claim 1 of the present invention is provided with an input port (11) into which a material to be treated (100) to which a combustible material is attached is provided at the rear, and the front Is provided with a discharge port (12) through which the material to be treated (100) is discharged, and an outer cylinder (13) and an inner cylinder (inclined so that the rear height is higher than the front height). 14) a pyrolysis device comprising a double cylindrical rotatable furnace (10) and a rotary drive mechanism (20) for rotating the rotary furnace (10),
A gas heating device (30) for heating and outputting the incorporated gas (200);
A first duct (41) for feeding the gas (200) discharged from the rear of the rotary furnace (10) to the gas heating device (30);
A second duct (42) for sending the gas (200) heated by the gas heating device (30) to the rotary furnace (10) side;
An outer cylinder supply duct (42A) branched from an end of the second duct (42) and connected to the outer cylinder (13) and the inner cylinder (14) from the front of the rotary furnace (10), respectively; An inner cylinder supply duct (42B);
An amount of gas that flows near the connecting position between the outer cylinder supply duct (42A) and the inner cylinder supply duct (42B) and flows to the outer cylinder (13) and the inner cylinder (14). A control mechanism (50) for adjusting the ratio of
A flow control device (51) for determining the opening of the control mechanism (50);
An inlet (11) into which the material to be treated (100) is introduced is provided on the inner cylinder (14) side behind the rotary furnace (10), and the material to be treated (100) is provided in the rotary furnace (10). It is characterized by supplying from the rear to the front through the inner cylinder (14).
また本発明の請求項２に記載の熱分解装置は、可燃物が付着した被処理材料（１００）が投入される投入口（１１）が後方に設けられ、前方には前記被処理材料（１００）が排出される排出口（１２）が設けられるとともに、後方の高さが前方の高さよりも高くなるように傾けられた、外筒（１３）と内筒（１４）からなる二重円筒状で回転可能な回転炉（１０）と、前記回転炉（１０）を回転させる回転駆動機構（２０）を、備える熱分解装置であって、
取り込まれたガス（２００）を加熱して出力するガス加熱装置（３０）と、
前記回転炉（１０）の後方から排出されるガス（２００）を前記ガス加熱装置（３０）に送り込む第一ダクト（４１）と、
前記ガス加熱装置（３０）で加熱されたガス（２００）を前記回転炉（１０）側に送る第二ダクト（４２）と、
前記第二ダクト（４２）から送られたガスを、前記回転炉（１０）の前方から前記外筒（１３）及び前記内筒（１４）にそれぞれ分配するガス分配ガイド（４８）と、
前記ガス分配ガイド（４８）に設けられ、前記外筒（１３）側に流れるガス量と前記内筒（１４）側に流れるガス量の割合を調整する分配調整弁構構（４９）と、
前記分配調整弁機構（４９）の開度を決定する流量制御装置（５１）を備え、
前記被処理材料（１００）が投入される投入口（１１）を、前記回転炉（１０）の後方の内筒（１４）側に設け、前記被処理材料（１００）を前記回転炉（１０）の後方から前方に内筒（１４）を通じて供給するようにしたことを特徴とする。
Further, in the thermal decomposition apparatus according to claim 2 of the present invention, an input port (11) into which the material to be processed (100) to which combustible matter is attached is provided at the rear, and the material to be processed (100 at the front). ) Is provided, and a double cylindrical shape including an outer cylinder (13) and an inner cylinder (14), which is inclined so that the rear height is higher than the front height. A pyrolysis apparatus comprising a rotary furnace (10) that can be rotated by a rotary drive mechanism (20) that rotates the rotary furnace (10),
A gas heating device (30) for heating and outputting the incorporated gas (200);
A first duct (41) for feeding the gas (200) discharged from the rear of the rotary furnace (10) to the gas heating device (30);
A second duct (42) for sending the gas (200) heated by the gas heating device (30) to the rotary furnace (10) side;
A gas distribution guide (48) for distributing the gas sent from the second duct (42) from the front of the rotary furnace (10) to the outer cylinder (13) and the inner cylinder (14), respectively;
A distribution adjusting valve mechanism (49) provided in the gas distribution guide (48), for adjusting a ratio of a gas amount flowing toward the outer cylinder (13) and a gas amount flowing toward the inner cylinder (14);
A flow control device (51) for determining the opening of the distribution regulating valve mechanism (49);
An inlet (11) into which the material to be treated (100) is introduced is provided on the inner cylinder (14) side behind the rotary furnace (10), and the material to be treated (100) is provided in the rotary furnace (10). It is characterized by supplying from the rear to the front through the inner cylinder (14).
また、請求項３に記載の発明は、前記第一ダクト（４１）または前記第二ダクト（４２）に設けられ、前記ガス（２００）を循環させる循環ファン（３２）をさらに備えることを特徴とする。 The invention according to claim 3 further includes a circulation fan (32) that is provided in the first duct (41) or the second duct (42) and circulates the gas (200). To do.
また、請求項４に記載の発明は、前記第二ダクト（４２）を流れるガス（２００）の一部を急冷した後、大気に排出させる冷却装置（５２）をさらに備えることを特徴とする。 The invention according to claim 4 further includes a cooling device (52) for rapidly cooling a part of the gas (200) flowing through the second duct (42) and then discharging the gas (200) to the atmosphere.
なお、括弧内の記号は、図面および後述する発明を実施するための形態に掲載された対応要素または対応事項を示す。 Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments for carrying out the invention to be described later.
本発明の熱分解装置によれば、傾けられて配置された回転炉に対して高い側の後方から可燃物が付着した被処理材料が内筒側に投入され内筒内を滑るように落下するので、従来例（特許文献１）のように外筒内に投入された被処理材料が上方に掻き上げられることはなく、回転炉にその分、負荷がかかることが軽減される。また、従来例（特許文献１）と比較して被処理材料を短時間で高温にすることができるので熱分解を効率的に行うことができる。 According to the thermal decomposition apparatus of the present invention, the material to be treated to which combustible material adheres from the rear of the high side with respect to the inclined rotary furnace is thrown into the inner cylinder and falls so as to slide in the inner cylinder. Therefore, unlike the conventional example (Patent Document 1), the material to be processed put into the outer cylinder is not scraped upward, and the load on the rotary furnace is reduced accordingly. Further, since the material to be processed can be heated to a high temperature in a short time compared to the conventional example (Patent Document 1), the thermal decomposition can be performed efficiently.
また、回転炉に対して低い側の前方からは、例えば、再熱炉やサイクロンといったガス加熱装置で加熱されたガスが外筒供給用ダクトを介して外筒側と、内筒供給用ダクトを介して内筒側に分けて送られるので、回転炉の内筒内では上方から落下する被処理材料に対して下方から熱源としてガスが直接当たり被処理材料を熱分解し、回転炉の外筒内ではガスだけが下方から上方に流れて被処理材料を周囲から間接的に温める雰囲気を形成する。
そして、外筒供給用ダクトと内筒供給用ダクトの接続位置付近にはバルブや調整弁などの制御機構が設けられ、外筒側に流れるガス量と内筒側に流れるガス量の割合を調整することができるので、被処理材料の熱分解時における温度制御を高精度で行うことができる。
Further, from the front on the lower side with respect to the rotary furnace, for example, the gas heated by a gas heating device such as a reheating furnace or a cyclone passes through the outer cylinder supply duct and the outer cylinder side and the inner cylinder supply duct. Therefore, in the inner cylinder of the rotary furnace, the gas directly hits the material to be processed falling from above as a heat source in the inner cylinder of the rotary furnace to thermally decompose the processed material, and the outer cylinder of the rotary furnace Inside, only gas flows upward from below to form an atmosphere that indirectly heats the material to be processed from the surroundings.
A control mechanism such as a valve or an adjustment valve is provided near the connection position between the outer cylinder supply duct and the inner cylinder supply duct to adjust the ratio of the amount of gas flowing to the outer cylinder side and the amount of gas flowing to the inner cylinder side. Therefore, temperature control during the thermal decomposition of the material to be processed can be performed with high accuracy.
なお、第二ダクトから送られたガスを、回転炉内に入る前に分配するのではなく、回転炉内で分配するようにしてもよい。すなわち、第二ダクトから送られたガスを、回転炉の前方から外筒及び内筒にそれぞれ分配するガス分配ガイドと、そのガス分配ガイドに設けられ、外筒側に流れるガス量と内筒側に流れるガス量の割合を調整する分配調整弁機構を備えるようにすることもできる。 The gas sent from the second duct may be distributed in the rotary furnace instead of being distributed before entering the rotary furnace. That is, a gas distribution guide that distributes the gas sent from the second duct to the outer cylinder and the inner cylinder from the front of the rotary furnace, and the amount of gas flowing to the outer cylinder side and the inner cylinder side provided in the gas distribution guide It is also possible to provide a distribution adjustment valve mechanism that adjusts the ratio of the amount of gas flowing into the pipe.
また、回転炉から排出されたガスは可燃性でありそのまま外気に排出されるのではなく、第一ダクトを介してガス加熱装置に送られ、そこで燃焼熱によって再度加熱されたガスが第二ダクトを介して回転炉に戻されるようにして循環されるので有効的に可燃物の燃焼熱量を熱源として利用することができる。 Further, the gas discharged from the rotary furnace is flammable and is not directly discharged to the outside air, but is sent to the gas heating device via the first duct, where the gas heated again by the combustion heat is transferred to the second duct. Therefore, the combustion heat quantity of the combustible material can be effectively used as a heat source.
また本発明によれば、第一ダクトまたは第二ダクトには循環ファンが設けられているので、ガスの循環を円滑に安定的に行うことができる。 According to the present invention, since the first duct or the second duct is provided with the circulation fan, the gas can be circulated smoothly and stably.
また本発明によれば、第二ダクトを流れるガスの一部を冷却装置で急冷した後、大気に排出するようにしたので、ダイオキシンの発生を低減あるいは皆無にすることができる。 In addition, according to the present invention, since a part of the gas flowing through the second duct is rapidly cooled by the cooling device and then discharged to the atmosphere, the generation of dioxins can be reduced or eliminated.
なお、本発明のように、回転炉の下方から外筒と内筒に分けて循環ガスを送り、上方から投入された被処理材料と内筒側で接触させ、外筒側ではガスの雰囲気だけにしたものは、上述した特許文献には全く記載されていない。 As in the present invention, the circulating gas is divided into an outer cylinder and an inner cylinder from the lower part of the rotary furnace, and is brought into contact with the material to be treated introduced from above on the inner cylinder side, and only the gas atmosphere is provided on the outer cylinder side. What is made is not described at all in the above-mentioned patent document.
図１及び図２を参照して、本発明の実施形態に係る熱分解装置について説明する。
この熱分解装置は、外筒１３と内筒１４からなる二重円筒状で回転可能な回転炉１０と、その回転炉１０を回転させることのできるモータからなる回転駆動機構２０と、ガス加熱装置３０を主に備え、可燃物が付着した被処理材料１００としての炭素繊維強化プラスチック（ＣＦＲＰ）を回転炉１０内で熱分解するものである。
With reference to FIG.1 and FIG.2, the thermal decomposition apparatus which concerns on embodiment of this invention is demonstrated.
This thermal decomposition apparatus includes a rotary furnace 10 that can be rotated in a double cylindrical shape including an outer cylinder 13 and an inner cylinder 14, a rotary drive mechanism 20 that includes a motor that can rotate the rotary furnace 10, and a gas heating apparatus. 30, and carbon fiber reinforced plastic (CFRP) as the material to be treated 100 to which combustible material is attached is pyrolyzed in the rotary furnace 10.
回転炉１０は、後方の高さが前方の高さよりも高くなるように傾けられた状態で台座上に配置されていて、その後方には、被処理材料１００が投入される投入口１１が設けられ、前方には被処理材料１００が排出される排出口１２が設けられている。被処理材料１００は、投入口１１に設けられたスクリューフィーダー１５から回転炉１０の内筒１４側に供給され、回転炉１０の回転にしたがって前方に移送される。 The rotary furnace 10 is arranged on the pedestal in a state in which the rear height is inclined so as to be higher than the front height, and an inlet 11 into which the material 100 to be processed is introduced is provided behind the rotary furnace 10. A discharge port 12 through which the material to be processed 100 is discharged is provided in front. The material to be processed 100 is supplied from the screw feeder 15 provided in the charging port 11 to the inner cylinder 14 side of the rotary furnace 10 and is transferred forward according to the rotation of the rotary furnace 10.
ガス加熱装置３０としては、例えば再熱炉やサイクロンが使用される。ガス加熱装置３０は、取り込まれたガス２００をバーナ３１による燃焼と、回転炉１０から送り込まれる可燃物の燃焼熱量を利用することによって加熱して出力するものである。バーナ３１には、燃焼ガスと空気が燃焼ブロワによって供給されている。
ガス加熱装置３０の入口と回転炉１０の後方とは第一ダクト４１で接続されていて、回転炉１０の後方で外筒１３と内筒１４の両方から排出されるガス２００をガス加熱装置３０に送り込んでいる。第一ダクト４１には循環ファン３２が設けられ、ガス２００の循環を円滑にかつ安定的に行うようにしている。なお、循環ファン３２を第二ダクト４２側に設けるようにすることもできる。
また、ガス加熱装置３０の出口と回転炉１０の前方とは第二ダクト４２で接続されていて、ガス加熱装置３０で加熱されたガス２００を回転炉１０側に送っている。
As the gas heating device 30, for example, a reheating furnace or a cyclone is used. The gas heating device 30 heats and outputs the captured gas 200 by using the combustion by the burner 31 and the combustion heat amount of the combustible material fed from the rotary furnace 10. The burner 31 is supplied with combustion gas and air by a combustion blower.
The inlet of the gas heating device 30 and the rear of the rotary furnace 10 are connected by a first duct 41, and the gas 200 discharged from both the outer cylinder 13 and the inner cylinder 14 at the rear of the rotary furnace 10 is supplied to the gas heating apparatus 30. It is sent to. A circulation fan 32 is provided in the first duct 41 so as to circulate the gas 200 smoothly and stably. The circulation fan 32 may be provided on the second duct 42 side.
Further, the outlet of the gas heating device 30 and the front of the rotary furnace 10 are connected by a second duct 42, and the gas 200 heated by the gas heating device 30 is sent to the rotary furnace 10 side.
第二ダクト４２の回転炉１０の前方側端部は、二又に分岐している。その分岐した一方は外筒供給用ダクト４２Ａとして回転炉１０の外筒１３に接続され、他方は内筒供給用ダクト４２Ｂとして回転炉１０の内筒１４に接続されている。
外筒供給用ダクト４２Ａと内筒供給用ダクト４２Ｂの接続位置付近には、外筒１３側に流れるガス量と内筒１４側に流れるガス量の割合を調整する制御バルブ５０が設けられ、流量制御装置５１によって制御バルブ５０の開度が決定されるようになっている。なお、制御バルブ５０の位置は、外筒供給用ダクト４２Ａと内筒供給用ダクト４２Ｂの丁度接続位置でもよいが、ここではその接続位置よりも回転炉１０の前方（下流側）に寄った内筒供給用ダクト４２Ｂの位置にしている。また、本実施形態では制御バルブ５０を制御機構５０として採用したがこれに限定されることなくその他の制御機構５０であってもよい。
The front end of the second duct 42 of the rotary furnace 10 is bifurcated. One of the branches is connected to the outer cylinder 13 of the rotary furnace 10 as an outer cylinder supply duct 42A, and the other is connected to the inner cylinder 14 of the rotary furnace 10 as an inner cylinder supply duct 42B.
A control valve 50 for adjusting the ratio of the amount of gas flowing to the outer tube 13 side and the amount of gas flowing to the inner tube 14 side is provided near the connection position between the outer tube supply duct 42A and the inner tube supply duct 42B. The opening degree of the control valve 50 is determined by the control device 51. The position of the control valve 50 may be just the connection position of the outer cylinder supply duct 42A and the inner cylinder supply duct 42B, but here the inner position closer to the front (downstream side) of the rotary furnace 10 than the connection position. It is in the position of the tube supply duct 42B. In this embodiment, the control valve 50 is adopted as the control mechanism 50, but the present invention is not limited to this, and other control mechanisms 50 may be used.
また第二ダクト４２には、第二ダクト４２を流れるガス２００の一部を取り出す第三ダクト４３が接続され、第三ダクト４３には冷却装置５２がされている。第三ダクト４３を流れるガス２００は、冷却装置（冷却塔）５２で急冷され、排気ダクト４６を介して簡易集塵機５３と脱硫装置５４を介した後に、煙突５５から大気に排出するようにしている。また、冷却装置（冷却塔）５２で冷却されたガス２００で煙突５５から大気に排出されていないものは、第四ダクト４４を介して第二ダクト４２に戻されるとともに、第五ダクト４５を介してガス加熱装置３０にも戻されている。第四ダクト４４及び第五ダクト４５にはそれぞれ冷却ファン３３，３４が設けられている。 The second duct 42 is connected to a third duct 43 for extracting a part of the gas 200 flowing through the second duct 42, and the third duct 43 is provided with a cooling device 52. The gas 200 flowing through the third duct 43 is rapidly cooled by a cooling device (cooling tower) 52, and after passing through a simple dust collector 53 and a desulfurization device 54 via an exhaust duct 46, is discharged from the chimney 55 to the atmosphere. . In addition, the gas 200 cooled by the cooling device (cooling tower) 52 that has not been discharged from the chimney 55 to the atmosphere is returned to the second duct 42 via the fourth duct 44 and via the fifth duct 45. The gas heating device 30 is also returned. The fourth duct 44 and the fifth duct 45 are provided with cooling fans 33 and 34, respectively.
回転炉１０の前方及び後方，ガス加熱装置３０，第二ダクト４２には温度センサー６１〜６４が設けられている。
温度センサー６１は回転炉１０の前方において内筒１４の温度を検知し、これに対応して、冷却装置５２から煙突５５側にガス２００を排出する排気ダクト４６において、簡易集塵機５３と冷却装置５２の間に設けられた制御バルブ６５の開度を、流量制御装置５１が制御するようにしている。制御バルブ６５の開度を大きくすると、冷却装置５２から第二ダクト４２に送られる冷却されたガス２００の量が減るので回転炉１０の前方から外筒１３と内筒１４に流れるガス２００の温度を下げることができ、制御バルブ６５の開度を小さくすると、冷却装置５２から第二ダクト４２に送られる冷却されたガス２００の量は増えるので回転炉１０の前方から外筒１３と内筒１４に流れるガス２００の温度を上げることができる。
また、温度センサー６２は回転炉１０の後方において外筒１３の温度を検知し、これに対応して、第一ダクト４１に設けられた循環ファン３２の回転を、流量制御装置５１が制御するようにしている。循環ファン３２の回転を強くすると回転炉１０内を流れるガス２００の流速を速くすることができ、循環ファン３２の回転を弱くすると回転炉１０内を流れるガス２００の流速を遅くすることができる。
Temperature sensors 61 to 64 are provided in front and rear of the rotary furnace 10, the gas heating device 30, and the second duct 42.
The temperature sensor 61 detects the temperature of the inner cylinder 14 in front of the rotary furnace 10, and correspondingly, in the exhaust duct 46 that discharges the gas 200 from the cooling device 52 to the chimney 55 side, the simple dust collector 53 and the cooling device 52. The flow rate control device 51 controls the opening degree of the control valve 65 provided between the two. When the opening degree of the control valve 65 is increased, the amount of the cooled gas 200 sent from the cooling device 52 to the second duct 42 is reduced, so the temperature of the gas 200 flowing from the front of the rotary furnace 10 to the outer cylinder 13 and the inner cylinder 14. If the opening degree of the control valve 65 is reduced, the amount of the cooled gas 200 sent from the cooling device 52 to the second duct 42 increases, so that the outer cylinder 13 and the inner cylinder 14 from the front of the rotary furnace 10 are increased. The temperature of the gas 200 flowing through can be raised.
Further, the temperature sensor 62 detects the temperature of the outer cylinder 13 at the rear of the rotary furnace 10, and the flow control device 51 controls the rotation of the circulation fan 32 provided in the first duct 41 correspondingly. I have to. If the rotation of the circulation fan 32 is increased, the flow rate of the gas 200 flowing in the rotary furnace 10 can be increased, and if the rotation of the circulation fan 32 is decreased, the flow rate of the gas 200 flowing in the rotary furnace 10 can be decreased.
また、温度センサー６３はガス加熱装置３０内の温度を検知し、これに対応して、バーナ３１に供給される燃焼ガスと空気の量を制御バルブ６６，６７の開度と、冷却装置５２から第五ダクト４５を介してガス加熱装置３０に送られる冷却されたガス２００の量を制御する制御バルブ６５の開度を、流量制御装置５１が制御するものである。
また、温度センサー６４は第二ダクト４２において外筒供給用ダクト４２Ａと内筒供給用ダクト４２Ｂの接続位置より少し上流側の温度を検知し、これに対応して、第四ダクト４４から第二ダクト４２に流れる冷却されたガス２００の量を制御する制御バルブ６９の開度を、流量制御装置５１が制御するものである。
Further, the temperature sensor 63 detects the temperature in the gas heating device 30, and correspondingly, the amount of combustion gas and air supplied to the burner 31 is determined from the opening degree of the control valves 66 and 67 and the cooling device 52. The flow rate control device 51 controls the opening degree of the control valve 65 that controls the amount of the cooled gas 200 sent to the gas heating device 30 through the fifth duct 45.
Further, the temperature sensor 64 detects the temperature slightly upstream from the connection position of the outer cylinder supply duct 42A and the inner cylinder supply duct 42B in the second duct 42, and correspondingly, the temperature sensor 64 is connected to the second duct 42 from the second duct 42. The flow rate control device 51 controls the opening degree of the control valve 69 that controls the amount of the cooled gas 200 flowing through the duct 42.
また、第二ダクト４２においてガス加熱装置３０側には酸素濃度を検知する酸素濃度センサー７１が設けられ、その検知に対応して、ガス加熱装置３０に樹脂燃焼ブロワ７２を介して大気から空気を直接送るための空気供給ダクト４７に設けられた制御バルブ７３の開度を、流量制御装置５１が制御するものである。樹脂燃焼ブロワ７２からは、可燃物を燃焼させるための空気が供給される。 Further, an oxygen concentration sensor 71 for detecting the oxygen concentration is provided on the gas heating device 30 side in the second duct 42, and in response to the detection, air is sent from the atmosphere to the gas heating device 30 via the resin combustion blower 72. The flow control device 51 controls the opening degree of the control valve 73 provided in the air supply duct 47 for direct sending. From the resin combustion blower 72, air for burning combustible materials is supplied.
このように構成された熱分解装置によれば、回転炉１０の後方で内筒１４側から投入された被処理材料１００としての炭素繊維強化プラスチック（ＣＦＲＰ）に対して、回転炉１０の前方で外筒１３と内筒１４からガス２００を送り込むことでカーボン樹脂を熱分解して炭素繊維を取り出してリサイクルすることができる。
特に、傾けられて配置された回転炉１０に対して高い側の後方から被処理材料１００が内筒１４側に投入され内筒１４内を滑るように落下するので、従来例（特許文献１）のように外筒１３内に投入された被処理材料１００が上方に掻き上げられることはなく、回転炉１０にその分、負荷がかかることが軽減される。また、従来例（特許文献１）と比較して被処理材料１００を短時間で高温にすることができ熱分解を効率的に行うことができる。
According to the thermal decomposition apparatus configured as described above, the carbon fiber reinforced plastic (CFRP) as the material to be processed 100 introduced from the inner cylinder 14 side behind the rotary furnace 10 is ahead of the rotary furnace 10. By sending the gas 200 from the outer cylinder 13 and the inner cylinder 14, the carbon resin can be pyrolyzed to take out the carbon fiber and recycle it.
In particular, since the material 100 to be treated is thrown into the inner cylinder 14 from the rear side on the high side with respect to the rotary furnace 10 disposed in an inclined manner and falls so as to slide inside the inner cylinder 14, the conventional example (Patent Document 1). Thus, the material 100 to be processed put into the outer cylinder 13 is not scraped upward, and the load on the rotary furnace 10 is reduced accordingly. Moreover, compared with a prior art example (patent document 1), the to-be-processed material 100 can be made high temperature in a short time, and thermal decomposition can be performed efficiently.
また、回転炉１０に対して低い側の前方からはガス加熱装置３０で加熱されたガス２００が外筒供給用ダクト４２Ａを介して外筒１３側と、内筒供給用ダクト４２Ｂを介して内筒１４側に分けられて送られるので、回転炉１０の内筒１４内では上方から落下する被処理材料１００に対して下方から熱源としてガス２００が直接当たり被処理材料１００を熱分解し、回転炉１０の外筒１３内ではガス２００だけが下方から上方に流れて被処理材料１００を周囲から間接的に温める雰囲気を形成する。
そして、外筒供給用ダクト４２Ａと内筒供給用ダクト４２Ｂの接続位置付近には制御バルブ５０が設けられ、外筒１３側に流れるガス２００の量と内筒１４側に流れるガス２００の量の割合を調整することができるので、被処理材料１００の熱分解時における温度制御を高精度で行うことができる。
Further, from the front side on the lower side with respect to the rotary furnace 10, the gas 200 heated by the gas heating device 30 passes through the outer cylinder supply duct 42A and the inner cylinder 13 through the inner cylinder supply duct 42B. Since it is divided and sent to the cylinder 14 side, the gas 200 directly hits as a heat source from the lower side to the processing material 100 falling from the upper side in the inner cylinder 14 of the rotary furnace 10 to thermally decompose the processing material 100 and rotate it. In the outer cylinder 13 of the furnace 10, only the gas 200 flows upward from below to form an atmosphere that indirectly heats the material 100 to be processed from the surroundings.
A control valve 50 is provided in the vicinity of the connection position between the outer cylinder supply duct 42A and the inner cylinder supply duct 42B, and the amount of gas 200 flowing to the outer cylinder 13 side and the amount of gas 200 flowing to the inner cylinder 14 side are set. Since the ratio can be adjusted, temperature control during the thermal decomposition of the material to be processed 100 can be performed with high accuracy.
また、回転炉１０から排出されたガス２００はそのまま外気に排出されるのではなく、第一ダクト４１を介してガス加熱装置３０に送られ、そこで再度加熱されたガス２００が第二ダクト４２を介して回転炉１０に戻されるようにして循環されるので有効的にガス２００を熱源として利用することができる。 Further, the gas 200 discharged from the rotary furnace 10 is not directly discharged to the outside air, but is sent to the gas heating device 30 through the first duct 41, and the gas 200 heated there again passes through the second duct 42. Therefore, the gas 200 can be effectively used as a heat source.
なお、本発明の実施形態では、第二ダクト４２の端部から分岐する外筒供給用ダクト４２Ａと内筒供給用ダクト４２Ｂを設けて第二ダクト４２から送られたガスを、回転炉１０に入る前に分配するようにしたが、図３に示すように、回転炉内で分配するようにしてもよい。
これは、回転炉１０内に、第二ダクト４２から送られたガスを、回転炉１０の前方から外筒１３及び内筒１４にそれぞれ分配するガス分配ガイド４８を設けるとともに、そのガス分配ガイド４８に、外筒１３側に流れるガス量と内筒１４側に流れるガス量の割合を調整する分配調整弁機構４９を設けたものである。
In the embodiment of the present invention, an outer cylinder supply duct 42A and an inner cylinder supply duct 42B branched from the end of the second duct 42 are provided, and the gas sent from the second duct 42 is supplied to the rotary furnace 10. Although it distributed before entering, as shown in FIG. 3, you may make it distribute in a rotary furnace.
In the rotary furnace 10, a gas distribution guide 48 for distributing the gas sent from the second duct 42 to the outer cylinder 13 and the inner cylinder 14 from the front of the rotary furnace 10 is provided, and the gas distribution guide 48 is provided. Further, a distribution adjustment valve mechanism 49 for adjusting the ratio of the amount of gas flowing to the outer cylinder 13 side and the amount of gas flowing to the inner cylinder 14 side is provided.
なお、本発明の実施形態では、被処理材料１００として炭素繊維強化プラスチック（ＣＦＲＰ）を使用した例を示したが、これに限られることはなく、可燃物が付着した被処理材料１００であれば、アルミや鉄であってもよい。
また、本実施形態では、流量制御装置５１が制御バルブ５０をはじめとして各種制御バルブを介してガス２００の量と流速を制御するようにしたが、個別の複数の制御装置を使用することもできる。
In the embodiment of the present invention, an example in which carbon fiber reinforced plastic (CFRP) is used as the material to be treated 100 has been described. However, the present invention is not limited to this, and the material to be treated 100 to which combustible material is attached may be used. Aluminum or iron may be used.
Further, in the present embodiment, the flow rate control device 51 controls the amount and flow rate of the gas 200 via various control valves including the control valve 50, but a plurality of individual control devices can also be used. .
なお、回転炉１０の後方では被処理材料１００を内筒１４側に投入するようにしたが、外筒１３側から投入することも考えられる。 In addition, although the to-be-processed material 100 was thrown into the inner cylinder 14 side behind the rotary furnace 10, throwing in from the outer cylinder 13 side is also considered.
１０ 回転炉
１１ 投入口
１２ 排出口
１３ 外筒
１４ 内筒
１５ スクリューフィーダー
２０ 回転駆動機構（モータ）
３０ ガス加熱装置
３１ バーナ
３２ 循環ファン
３３ 冷却ファン
３４ 冷却ファン
４１ 第一ダクト
４２ 第二ダクト
４２Ａ 外筒供給用ダクト
４２Ｂ 内筒供給用ダクト
４３ 第三ダクト
４４ 第四ダクト
４５ 第五ダクト
４６ 排気ダクト
４７ 空気供給ダクト
４８ ガス分配ガイド
４９ 分配調整弁機構
５０ 制御バルブ（制御機構）
５１ 流量制御装置
５２ 冷却装置
５３ 簡易集塵機
５４ 脱硫装置
５５ 煙突
６１〜６４ 温度センサー
６５〜６９ 制御バルブ
７１ 酸素濃度センサー
７２ 樹脂燃焼ブロワ
７３ 制御バルブ
１００ 被処理材料
２００ ガス
DESCRIPTION OF SYMBOLS 10 Rotary furnace 11 Input port 12 Discharge port 13 Outer cylinder 14 Inner cylinder 15 Screw feeder 20 Rotation drive mechanism (motor)
30 Gas heating device 31 Burner 32 Circulating fan 33 Cooling fan 34 Cooling fan 41 First duct 42 Second duct 42A Outer cylinder supply duct 42B Inner cylinder supply duct 43 Third duct 44 Fourth duct 45 Fifth duct 46 Exhaust duct 46 47 Air supply duct 48 Gas distribution guide 49 Distribution adjustment valve mechanism 50 Control valve (control mechanism)
51 Flow Control Device 52 Cooling Device 53 Simple Dust Collector 54 Desulfurization Device 55 Chimney 61-64 Temperature Sensor 65-69 Control Valve 71 Oxygen Concentration Sensor 72 Resin Combustion Blower 73 Control Valve 100 Processed Material 200 Gas
Claims (4)
取り込まれたガスを加熱して出力するガス加熱装置と、
前記回転炉の後方から排出されるガスを前記ガス加熱装置に送り込む第一ダクトと、
前記ガス加熱装置で加熱されたガスを前記回転炉側に送る第二ダクトと、
前記第二ダクトの端部から分岐して前記回転炉の前方から前記外筒及び前記内筒にそれぞれ接続された外筒供給用ダクト及び内筒供給用ダクトと、
前記外筒供給用ダクトと前記内筒供給用ダクトの接続位置付近に設けられ、前記外筒側に流れるガス量と前記内筒側に流れるガス量の割合を調整する制御機構と、
前記制御機構の開度を決定する流量制御装置を備え、
前記被処理材料が投入される投入口を、前記回転炉の後方の内筒側に設け、前記被処理材料を前記回転炉の後方から前方に内筒を通じて供給するようにしたことを特徴とする熱分解装置。 An input port through which a material to be treated with combustible material is introduced is provided at the rear, a discharge port through which the material to be processed is discharged is provided at the front, and the rear height is higher than the front height. It is a pyrolysis apparatus comprising a rotary furnace that is rotatable in a double cylindrical shape composed of an outer cylinder and an inner cylinder, and a rotation drive mechanism that rotates the rotary furnace,
A gas heating device that heats and outputs the captured gas;
A first duct for sending gas discharged from the rear of the rotary furnace to the gas heating device;
A second duct for sending the gas heated by the gas heating device to the rotary furnace side;
An outer cylinder supply duct and an inner cylinder supply duct branched from the end of the second duct and connected to the outer cylinder and the inner cylinder respectively from the front of the rotary furnace;
A control mechanism that is provided near the connection position of the outer cylinder supply duct and the inner cylinder supply duct, and that adjusts the ratio of the amount of gas flowing to the outer cylinder side and the amount of gas flowing to the inner cylinder side;
A flow control device for determining the opening of the control mechanism;
An inlet for introducing the material to be processed is provided on the inner cylinder side behind the rotary furnace, and the material to be processed is supplied from the rear to the front through the inner cylinder. Pyrolysis device.
取り込まれたガスを加熱して出力するガス加熱装置と、
前記回転炉の後方から排出されるガスを前記ガス加熱装置に送り込む第一ダクトと、
前記ガス加熱装置で加熱されたガスを前記回転炉側に送る第二ダクトと、
前記第二ダクトから送られたガスを、前記回転炉の前方から前記外筒及び前記内筒にそれぞれ分配するガス分配ガイドと、
前記ガス分配ガイドに設けられ、前記外筒側に流れるガス量と前記内筒側に流れるガス量の割合を調整する分配調整弁機構と、
前記分配調整弁機構の開度を決定する流量制御装置を備え、
前記被処理材料が投入される投入口を、前記回転炉の後方の内筒側に設け、前記被処理材料を前記回転炉の後方から前方に内筒を通じて供給するようにしたことを特徴とする熱分解装置。 An input port through which a material to be treated with combustible material is introduced is provided at the rear, a discharge port through which the material to be processed is discharged is provided at the front, and the rear height is higher than the front height. It is a pyrolysis apparatus comprising a rotary furnace that is rotatable in a double cylindrical shape composed of an outer cylinder and an inner cylinder, and a rotation drive mechanism that rotates the rotary furnace,
A gas heating device that heats and outputs the captured gas;
A first duct for sending gas discharged from the rear of the rotary furnace to the gas heating device;
A second duct for sending the gas heated by the gas heating device to the rotary furnace side;
A gas distribution guide that distributes the gas sent from the second duct to the outer cylinder and the inner cylinder from the front of the rotary furnace;
A distribution adjusting valve mechanism that is provided in the gas distribution guide and adjusts the ratio of the amount of gas flowing to the outer cylinder side and the amount of gas flowing to the inner cylinder side;
A flow control device for determining the opening of the distribution regulating valve mechanism;
An inlet for introducing the material to be processed is provided on the inner cylinder side behind the rotary furnace, and the material to be processed is supplied from the rear to the front through the inner cylinder. Pyrolysis device.
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