JP5753378B2

JP5753378B2 - Organic pyrolysis equipment

Info

Publication number: JP5753378B2
Application number: JP2010285136A
Authority: JP
Inventors: 格礒本; 水津　勝美; 勝美水津; 暁横田; 泰之石田; 岡村　聰一郎; 聰一郎岡村
Original assignee: Taiheiyo Cement Corp
Current assignee: Taiheiyo Cement Corp
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2015-07-22
Anticipated expiration: 2030-12-21
Also published as: JP2012130860A

Description

本発明は、ハロゲン化合物を含有する有機物を連続的に熱分解する有機物熱分解装置に関する。 The present invention relates to an organic pyrolysis apparatus that continuously pyrolyzes an organic substance containing a halogen compound.

塩化ビニル樹脂、フッ素樹脂等のハロゲン化合物を含有する有機物、例えば車破砕くずを燃料として使用する場合、予め脱ハロゲン化処理を行い、ハロゲンを含まない固形燃料とした後、これを燃料として使用する場合も多い。通常、ハロゲン化合物を含有する有機物の脱ハロゲン化には、熱を加えて脱ハロゲン化する熱分解方法が採用され、これまでに多くの熱分解方法、熱分解装置が提案されている。 When using organic substances containing halogen compounds such as vinyl chloride resin and fluororesin, such as car scraps as fuel, dehalogenation treatment is performed in advance to obtain a solid fuel that does not contain halogen, and this is used as fuel. There are many cases. Usually, for dehalogenation of an organic substance containing a halogen compound, a thermal decomposition method in which heat is applied to dehalogenate is employed, and many thermal decomposition methods and thermal decomposition apparatuses have been proposed so far.

ハロゲン化合物を含有する有機物を熱分解する装置としては、構造が簡単であり、また大型化も容易なロータリーキルンタイプの熱分解装置が多く使用されている。熱分解装置を用いてハロゲン化合物を含有する有機物を熱分解する場合、発生するガスによる装置の腐食、発生ガスの後処理が問題となる。例えば、ロータリーキルンを用いて塩化ビニル樹脂を熱分解した場合、腐食性の高い塩化水素が発生するが、この塩化水素によりロータリーキルンの内筒が腐食される恐れがある。この腐食の問題を解決するため、直接加熱方式のロータリーキルンに代え、間接加熱方式のロータリーキルン（以下外熱式ロータリーキルンと記す）を用いた塩素除去装置が提案されている（例えば特許文献１、２参照）。 As an apparatus for thermally decomposing an organic substance containing a halogen compound, a rotary kiln type pyrolyzer having a simple structure and easy to increase in size is often used. When an organic substance containing a halogen compound is thermally decomposed using a thermal decomposition apparatus, corrosion of the apparatus due to the generated gas and post-treatment of the generated gas become problems. For example, when a vinyl chloride resin is thermally decomposed using a rotary kiln, highly corrosive hydrogen chloride is generated, but the inner cylinder of the rotary kiln may be corroded by this hydrogen chloride. In order to solve this corrosion problem, a chlorine removal apparatus using an indirect heating type rotary kiln (hereinafter referred to as an external heating type rotary kiln) instead of a direct heating type rotary kiln has been proposed (see, for example, Patent Documents 1 and 2). ).

特許第３３５３７３０号公報Japanese Patent No. 3353730 特開２０００−１５３５２３号公報JP 2000-153523 A

加熱ガスと被処理物とを直接接触させる直接接触方式のロータリーキルンの場合、発生した塩化水素と加熱ガスとが混合し排出されるため、排出されるガスの後処理が大変であるとし、特許文献１に記載の塩素除去装置は、間接加熱方式を採用している。外熱式ロータリーキルンを採用すれば、発生した塩化水素ガスと加熱ガスとが分離されているため、直接接触方式のような問題は発生しない。しかし外熱式ロータリーキルンを用いても発生するガスによる装置の腐食、ガス処理の問題が完全に解決されているとは言い難い。特許文献１の塩素除去装置で代表されるように、発生した塩化水素と樹脂残渣とをいっしょに出口フード部から排出する方法は、簡便な方法ではあるが、通常、出口フード部は温度が低いため酸露点以下となり強烈な酸腐食が起こる。 In the case of a direct contact type rotary kiln in which the heated gas and the object to be treated are in direct contact, the generated hydrogen chloride and the heated gas are mixed and discharged. The chlorine removal apparatus described in 1 employs an indirect heating method. If an external heating type rotary kiln is adopted, the generated hydrogen chloride gas and the heated gas are separated, and thus the problem as in the direct contact method does not occur. However, even if an externally heated rotary kiln is used, it is difficult to say that the problems of gas corrosion and gas treatment due to the generated gas are completely solved. As represented by the chlorine removal device of Patent Document 1, the method of discharging the generated hydrogen chloride and the resin residue together from the outlet hood portion is a simple method, but usually the outlet hood portion has a low temperature. Therefore, it becomes below the acid dew point and intense acid corrosion occurs.

このような外熱式ロータリーキルン方式の熱分解装置の抱える問題を解決するために、特開平６−２４７７８４号公報に記載の外熱式ロータリーキルンのように、内筒と外熱炉とを連通させ、腐食性ガスを含む熱分解ガスを外熱炉に導き、外熱炉の加熱ガスといっしょに系外に排出させる方法も考えられるが、この方法では加熱ガスと被処理物とを直接接触させる方法と同様、処理対象ガス量が多いというような課題が残る。熱分解ガスの後処理は、熱分解装置の腐食と同じく非常に重要な課題であり、実用化に際しこれらを考慮した熱分解装置とする必要がある。 In order to solve the problem of such an external heating type rotary kiln type thermal decomposition apparatus, like the external heating type rotary kiln described in JP-A-6-247784, the inner cylinder and the external heating furnace are communicated, A method of introducing pyrolysis gas containing corrosive gas to the external heating furnace and exhausting it together with the heating gas of the external heating furnace is also conceivable, but in this method, the heating gas and the object to be treated are brought into direct contact. Similar to the above, there remains a problem that the amount of gas to be processed is large. The post-treatment of the pyrolysis gas is a very important issue, as is the corrosion of the pyrolysis apparatus, and it is necessary to use a pyrolysis apparatus that takes these into consideration for practical use.

本発明の目的は、ハロゲン含有有機物の熱分解に伴い発生する腐食性ガスによる腐食を防止可能で、腐食性ガスを含む熱分解ガスの後処理が容易な有機物熱分解装置を提供することである。 An object of the present invention is to provide an organic pyrolysis apparatus that can prevent corrosion due to corrosive gas generated by pyrolysis of a halogen-containing organic substance and that can be easily post-treated with a pyrolysis gas containing a corrosive gas. .

本発明は、ハロゲン化合物を含有する有機物を連続的に熱分解処理が可能な、内筒を覆うように外熱炉が設けられた外熱式ロータリーキルン方式の有機物熱分解装置であって、熱分解ガスを外部に排出するガス排出口が設けられた前記内筒と、前記内筒の外周に設けられ前記ガス排出口を覆う、前記外熱炉と区画されたガス回収室と、前記ガス回収室に排出された熱分解ガスを排気するガス排気管と、を備え、前記内筒は、内部が仕切られておらず、発生した熱分解ガスは前記内筒全体に充満可能であり、前記ガス排出口は、前記内筒の中央部で、かつ温度の最も高い場所に設けられていることを特徴とする有機物熱分解装置である。 The present invention is continuously thermally decomposing organic matter containing a halogen compound is possible, it is organic pyrolysis apparatus of externally heated rotary kiln system externally heated furnace is provided so as to cover the inner tube, the pyrolysis The inner cylinder provided with a gas exhaust port for exhausting gas to the outside, a gas recovery chamber provided on the outer periphery of the inner cylinder and covering the gas exhaust port, the gas recovery chamber partitioned from the external heating furnace, and the gas recovery chamber Bei example and a gas exhaust pipe for exhausting the discharged pyrolysis gas in the inner cylinder, the interior is not partitioned, generated thermal decomposition gas is capable fill the entire inner cylinder, the gas The discharge port is an organic matter thermal decomposition apparatus, characterized in that the discharge port is provided in the central portion of the inner cylinder and in a place having the highest temperature .

また本発明は、前記有機物熱分解装置において、さらに前記ガス回収室に排出された熱分解ガスを酸露点以上の温度に保持する保温又は加熱する手段を備えることを特徴とする。 The present invention, in the organic matter pyrolyzer, further characterized in that it comprises means for heat retaining or heat holding the pyrolysis gas discharged into the gas collection chamber to the acid dew point temperature above.

また本発明は、前記有機物熱分解装置において、前記内筒は、径の異なる２つの内筒からなり、一方の内筒の内径が他方の内筒の外径よりもわずかに大きく、一方の内筒が他方の内筒に部分的に挿入され、前記ガス排出口が、前記一方の内筒が他方の内筒に部分的に挿入された部分の隙間であり、前記隙間は、径の異なる２つの内筒を１つの内筒として見たとき、内筒の中央部で、かつ温度の最も高い場所に位置することを特徴とする。
また本発明は、前記有機物熱分解装置において、前記２つの内筒の長さが略同一であり、前記２つの内筒は連結され、１つの駆動装置で一体的に回転することを特徴とする。 The present invention, in the organic matter pyrolyzer, the inner tube is composed of two inner cylinder having different diameters slightly larger than the outer diameter of the inner tube inside diameter of one of the inner cylinder and the other, whereas The inner cylinder is partially inserted into the other inner cylinder, and the gas discharge port is a gap between the one inner cylinder partially inserted into the other inner cylinder, and the gap has a diameter of When two different inner cylinders are viewed as one inner cylinder, the inner cylinder is located at the center and at the highest temperature .
Further, the present invention is characterized in that, in the organic matter thermal decomposition apparatus, the lengths of the two inner cylinders are substantially the same, the two inner cylinders are connected, and are integrally rotated by one driving device. .

また本発明は、前記有機物熱分解装置において、前記外熱炉が左右に分割され、前記ガス回収室が左右の外熱炉の間に配置されていることを特徴とする。
また本発明は、前記有機物熱分解装置において、前記外熱炉は、分割されることなく１つの外熱炉からなり、前記ガス回収室は、外熱炉内に配置され、ガス回収室全体が外熱炉で覆われ、前記ガス排気管は、熱分解ガスを外熱炉の外に導くことを特徴とする。 The present invention, in the organic matter pyrolyzer, the outer heat furnace is divided into right and left, wherein said gas collection chamber is disposed between the left and right outer heat furnace.
Further, the present invention is the organic pyrolysis apparatus, wherein the external heat furnace is composed of one external heat furnace without being divided, and the gas recovery chamber is disposed in the external heat furnace, and the entire gas recovery chamber is The gas exhaust pipe is covered with an external heat furnace, and guides the pyrolysis gas to the outside of the external heat furnace .

また本発明は、前記有機物熱分解装置において、さらに前記内筒の両端に、内筒の中央部に向う掃気ガスを供給する掃気ガス供給手段を備え、前記掃気ガスは、少なくとも前記内筒の端部に熱分解ガスが滞留し、当該部分が腐食することを防止することを特徴とする。 The present invention, in the organic matter pyrolyzer, further to both ends of the inner cylinder, comprising a scavenging gas supply means for supplying a scavenging gas toward the central portion of the inner cylinder, the scavenging gas is at least the inner It is characterized in that pyrolysis gas stays at the end of the tube and the portion is prevented from corroding .

また本発明は、前記有機物熱分解装置において、前記掃気ガスが、過熱水蒸気であり、該過熱水蒸気は、前記内筒内及び／又は前記ガス回収室内で結露しない過熱度を有することを特徴とする。 The present invention, in the organic matter pyrolyzer, the scavenging gas is a superheated steam, superheated steam, characterized by having the inner cylinder and / or superheat without condensation in the gas collection chamber And

本発明の有機物熱分解装置は、外熱式ロータリーキルン方式の有機物熱分解装置であって、熱分解ガスを外部に排出するガス排出口が内筒の中央部でかつ温度の最も高い場所に設けられ、内筒の外周にそれを覆うガス回収室が設けられ、さらにはガス回収室に排出された熱分解ガスを排気するガス排気管を有するので、発生する熱分解ガスを速やかに系外に排気することができる。ガス排出口が内筒中央部に設けられているので、温度の低下し易い装置端部への熱分解ガスの接触を抑制し、装置の腐食を防止することができる。さらに熱分解ガスを回収するガス回収室が、加熱炉と区画されているので、熱分解ガスに外熱炉の加熱媒体が混じることがない。このため処理すべきガス量が少なく、ガス処理設備の負荷が低減される。 Organic pyrolysis apparatus of the present invention is a organic pyrolysis apparatus of externally heated rotary kiln system, provided in the highest point of the central portion and the temperature of the gas discharge port inner cylinder for discharging of fumes to the outside A gas recovery chamber is provided on the outer periphery of the inner cylinder, and a gas exhaust pipe for exhausting the pyrolysis gas discharged to the gas recovery chamber is provided, so that the generated pyrolysis gas is quickly exhausted outside the system. can do. Since the gas discharge port is provided in the central part of the inner cylinder, it is possible to suppress contact of the pyrolysis gas with the end of the apparatus where the temperature is likely to decrease, and to prevent corrosion of the apparatus. Further, since the gas recovery chamber for recovering the pyrolysis gas is partitioned from the heating furnace, the heating medium of the external heating furnace is not mixed with the pyrolysis gas. Therefore, the amount of gas to be processed is small, and the load on the gas processing facility is reduced.

また本発明によれば、本発明の有機物熱分解装置は、ガス回収室に排出された熱分解ガスを酸露点以上の温度に保持する保温又は加熱する手段を備えるので、ガス回収室の温度を、酸露点以上に保持することができる。これにより内筒外壁の腐食を確実に防止することができる。 Further, according to the present invention, the organic matter pyrolysis apparatus of the present invention includes means for keeping or heating the pyrolysis gas discharged to the gas recovery chamber at a temperature equal to or higher than the acid dew point. It can be kept above the acid dew point. Thereby, corrosion of the outer wall of the inner cylinder can be surely prevented.

また本発明によれば、前記有機物熱分解装置において、内筒は、径の異なる２つの内筒からなり、一方の内筒の内径が他方の内筒の外径よりもわずかに大きく、一方の内筒が他方の内筒に部分的に挿入されているので、それぞれの内筒において、それぞれの両端をローラで回転自在に支持することができる。このため内筒の撓みの問題を解決し、装置の大型化が容易となる。またガス排出口が、一方の内筒が他方の内筒に部分的に挿入された部分の隙間であるので、簡単にガス排出口を設けることができる。また隙間が、径の異なる２つの内筒を１つの内筒として見たとき、内筒の中央部で、かつ温度の最も高い場所に位置するので、温度の低下し易い装置端部への熱分解ガスの接触を抑制し、装置の腐食を防止することができる。このような有機物熱分解装置において、２つの内筒の長さを略同一とし、２つの内筒を連結し、１つの駆動装置で一体的に回転するようにしてもよい。 According to the invention, in the organic matter pyrolysis apparatus, the inner cylinder is composed of two inner cylinders having different diameters, and the inner diameter of one inner cylinder is slightly larger than the outer diameter of the other inner cylinder. Since the inner cylinder is partially inserted into the other inner cylinder, both ends of each inner cylinder can be rotatably supported by rollers. For this reason, the problem of the bending of the inner cylinder is solved, and the enlargement of the apparatus is facilitated. Further, since the gas discharge port is a gap between the part where one inner cylinder is partially inserted into the other inner cylinder, the gas discharge port can be provided easily. In addition, when the two inner cylinders having different diameters are viewed as one inner cylinder, the gap is located at the center of the inner cylinder and the place where the temperature is the highest. The contact of cracked gas can be suppressed and corrosion of the apparatus can be prevented. In such an organic matter thermal decomposition apparatus, the lengths of the two inner cylinders may be substantially the same, and the two inner cylinders may be connected to rotate integrally with one driving device.

また本発明によれば、前記有機物熱分解装置において、外熱炉が左右に分割され、ガス回収室が左右の外熱炉の間に配置されているので、構造が簡単で実用化し易い。
また本発明において、外熱炉を１つの外熱炉で構成し、ガス回収室全体が外熱炉で覆われるように配置してもよい。これによりガス回収室内の温度が低下せず、ガス回収室を加熱するための加熱手段が不要となる。 According to the present invention, in the organic matter pyrolysis apparatus, the external heat furnace is divided into left and right parts, and the gas recovery chamber is disposed between the left and right external heat furnaces. Therefore, the structure is simple and easy to put into practical use.
In the present invention, the external heating furnace may be configured by one external heating furnace, and the entire gas recovery chamber may be covered with the external heating furnace. As a result, the temperature in the gas recovery chamber does not decrease, and heating means for heating the gas recovery chamber becomes unnecessary.

また本発明によれば、前記有機物熱分解装置は、さらに内筒の両端に、内筒の中央部に向う掃気ガスを供給する掃気ガス供給手段を備えるので、迅速に熱分解ガスを系外に排気することができる。さらに掃気ガスは、少なくとも内筒の端部に熱分解ガスが滞留し、当該部分が腐食することを防止するので、より確実に装置の腐食を防止することができる。 According to the present invention, the organic material pyrolysis apparatus, both ends of the inner cylinder further so comprising a scavenging gas supply means for supplying a scavenging gas toward the central portion of the inner cylinder, the system of fumes to quickly Can be exhausted outside. Furthermore, since the scavenging gas prevents thermal decomposition gas from staying at least at the end of the inner cylinder and corroding the part, corrosion of the apparatus can be prevented more reliably.

また本発明によれば、掃気ガスが、過熱水蒸気であるので、熱分解ガスの払出しと共に有機物の分解、特に塩素含有有機物からの塩素除去を促進することが可能であり好ましい。 Further, according to the present invention, since the scavenging gas is superheated steam, it is possible to accelerate the decomposition of the organic substance, particularly the removal of chlorine from the chlorine-containing organic substance together with the discharge of the pyrolysis gas.

本発明の第１実施形態の有機物熱分解装置１を備える有機物熱分解設備の全体構成を示す断面図である。It is sectional drawing which shows the whole structure of an organic matter thermal decomposition equipment provided with the organic matter thermal decomposition apparatus 1 of 1st Embodiment of this invention. 本発明の第２実施形態の有機物熱分解装置２を備える有機物熱分解設備の全体構成を示す断面図である。It is sectional drawing which shows the whole structure of organic matter thermal decomposition equipment provided with the organic matter thermal decomposition apparatus 2 of 2nd Embodiment of this invention. 本発明の第３実施形態の有機物熱分解装置３を備える有機物熱分解設備の全体構成を示す断面図である。It is sectional drawing which shows the whole structure of organic matter thermal decomposition equipment provided with the organic matter thermal decomposition apparatus 3 of 3rd Embodiment of this invention.

図１は、本発明の第１実施形態の有機物熱分解装置１を備える有機物熱分解設備の全体構成を示す断面図である。有機物熱分解設備は、フッ素、塩素、臭素などのハロゲン化合物を含有する有機物（以下、原料、被処理物と記す場合もある。）を熱分解し、ハロゲンが除去された有機物残渣を得るための設備である。熱分解の対象となるハロゲン含有有機物としては、難燃性向上等の目的でハロゲン化合物（周期律表１７族の塩素、臭素、フッ素、ヨウ素を含む化合物）を含有するポリ塩化ビニル樹脂、フッ素樹脂などのプラスチック類、海藻等の食品系廃棄物及びプラスチック容器類などの塩化物が付着した有機物が例示される。前記ハロゲン含有プラスチック類を原料として使用しているものとして、耐熱電線、耐熱テープ、電気器具用部品、配管等が挙げられる。またハロゲン含有有機物が混在する廃棄物も熱分解の対象物となる。まず、有機物熱分解設備の全体的構成を説明し、その後、有機物熱分解装置１を詳細に説明する。 FIG. 1 is a cross-sectional view showing the overall configuration of an organic matter pyrolysis facility including the organic matter pyrolysis apparatus 1 according to the first embodiment of the present invention. Organic pyrolysis equipment is fluorine, chlorine, organic matter containing a halogen compound such as bromine (hereinafter, raw material, may be referred to as the object to be processed also.) Pyrolyzed, to obtain the organic residues of halogen is removed Equipment. Examples of halogen-containing organic substances to be pyrolyzed include polyvinyl chloride resins and fluorine resins containing halogen compounds (compounds containing chlorine, bromine, fluorine, iodine of Group 17 of the periodic table) for the purpose of improving flame retardancy. Examples thereof include plastics such as seafood, food waste such as seaweed, and organic substances with attached chloride such as plastic containers. Examples of the materials using the halogen-containing plastics include heat-resistant electric wires, heat-resistant tapes, parts for electric appliances, piping, and the like. In addition, wastes containing halogen-containing organic substances are also subject to thermal decomposition. First, the overall configuration of the organic matter thermal decomposition facility will be described, and then the organic matter thermal decomposition apparatus 1 will be described in detail.

有機物熱分解設備は、ハロゲン含有有機物を熱分解する外熱式ロータリーキルン方式の有機物熱分解装置１の他、有機物熱分解装置１に被処理物であるハロゲン含有有機物を供給する、ホッパー５２及びスクリューフィーダ５３を有する原料供給装置５１を備える。原料供給装置５１と有機物熱分解装置１との接続部には、入口フード５５が設けられている。入口フード５５は、固定された状態で取付けられており、回転する有機物熱分解装置１の内筒１１との接続部には、熱分解ガスの漏れ出し、あるいは外気の漏れ込みを防止するためシール部材５６が設けられている。一方、有機物熱分解装置１の出口部には、出口フード６１が設けられ、有機物残渣は、出口フード６１の下部に設けられた排出ホッパー６２から排出される。出口フード６１も、入口フード５５と同様に固定された状態で取付けられており、回転する内筒１１との接続部には、熱分解ガスの漏れ出し、あるいは外気の漏れ込みを防止するためシール部材６３が設けられている。なお、排出ホッパー６２の底部には、図示を省略したがロータリーバルブのようなガスをシールしつつ有機物残渣を排出する装置が設けられている。 The organic matter pyrolysis equipment supplies an organic matter pyrolysis device 1 to the organic matter pyrolysis device 1 in addition to an externally heated rotary kiln type organic matter pyrolysis device 1 that thermally decomposes the halogen-containing organic matter, and a hopper 52 and a screw feeder. The raw material supply apparatus 51 which has 53 is provided. An inlet hood 55 is provided at a connection portion between the raw material supply device 51 and the organic matter pyrolysis device 1. The inlet hood 55 is attached in a fixed state, and a seal is provided at a connection portion with the inner cylinder 11 of the rotating organic substance pyrolysis apparatus 1 to prevent leakage of pyrolysis gas or leakage of outside air. A member 56 is provided. On the other hand, an outlet hood 61 is provided at the outlet portion of the organic matter thermal decomposition apparatus 1, and organic residue is discharged from a discharge hopper 62 provided at the lower portion of the outlet hood 61. The outlet hood 61 is also fixed in the same manner as the inlet hood 55, and has a seal to prevent leakage of pyrolysis gas or leakage of outside air at the connecting portion with the rotating inner cylinder 11. A member 63 is provided. Although not shown, a device for discharging organic residue while sealing gas such as a rotary valve is provided at the bottom of the discharge hopper 62.

有機物熱分解装置１は、内筒１１を覆うように外熱炉２１が設けられた外熱式ロータリーキルン方式の熱分解装置である。内筒１１は、金属製のパイプ状部材であり、両端部にそれぞれ回転リング４１、４２を備え、回転リング４１、４２は、架台４３に取り付けられたローラ４５、４６で回転自在に支持されている。内筒１１の一端部には、内筒１１を回転させるための回転ギア４７が設けられ、この回転ギア４７が駆動モータ４８に連結する駆動ギア４９にかみ合い、駆動モータ４８の駆動により内筒１１が回転させられる。内筒１１は、原料供給側に比べ、出口部側が若干低くなるように水平面に対して若干傾斜した状態で設置されている。 The organic matter thermal decomposition apparatus 1 is an external heat type rotary kiln type thermal decomposition apparatus provided with an external heat furnace 21 so as to cover the inner cylinder 11. The inner cylinder 11 is a metal pipe-like member, and is provided with rotating rings 41 and 42 at both ends, respectively. The rotating rings 41 and 42 are rotatably supported by rollers 45 and 46 attached to the gantry 43. Yes. A rotation gear 47 for rotating the inner cylinder 11 is provided at one end of the inner cylinder 11, and the rotation gear 47 meshes with a drive gear 49 connected to the drive motor 48, and the inner cylinder 11 is driven by the drive motor 48. Is rotated. The inner cylinder 11 is installed in a state slightly inclined with respect to the horizontal plane so that the outlet portion side is slightly lower than the raw material supply side.

内筒１１の中央部には、壁面を貫通し、内筒１１内で発生した熱分解ガスをガス回収室３１に排出する、略Ｌ字状のガス排出管１２（１２ａ、１２ｂ）が設けられている。ガス排出管１２は、一端部が内筒１１内で回転、落下する原料及び／又は有機物残渣が侵入しないように内筒１１の中心付近で出口側に水平に曲げられており、他端部がガス回収室３１に突出するように取り付けられている。ハロゲン含有有機物を熱分解すると、ハロゲンが離脱し、ハロゲンガスを含む熱分解ガスが発生する。このような熱分解ガスは、腐食性が強いので、発生した熱分解ガスを速やかに系外に排出し、装置壁面との接触時間を短くし、また接触面積を小さくすることが望ましい。このためにガス排出管１２は、熱分解ガスの発生する領域に設置されている。 A substantially L-shaped gas discharge pipe 12 (12a, 12b) is provided at the center of the inner cylinder 11 and passes through the wall surface and discharges the pyrolysis gas generated in the inner cylinder 11 to the gas recovery chamber 31. ing. The gas exhaust pipe 12 is bent horizontally toward the outlet side near the center of the inner cylinder 11 so that one end of the material rotates and falls within the inner cylinder 11 and / or organic residue does not enter. It is attached to the gas recovery chamber 31 so as to protrude. When the halogen-containing organic substance is pyrolyzed, the halogen is released and a pyrolysis gas containing a halogen gas is generated. Since such pyrolysis gas is highly corrosive, it is desirable to quickly discharge the generated pyrolysis gas out of the system, shorten the contact time with the apparatus wall surface, and reduce the contact area. For this purpose, the gas discharge pipe 12 is installed in a region where pyrolysis gas is generated.

熱分解ガスは、ハロゲン含有有機物が熱分解温度以上に加熱され発生する。本有機物熱分解装置１の場合、原料供給装置５１を介して内筒１１内に連続供給された原料は、外熱炉２１からの熱により加熱され温度を上昇させ、熱分解温度以上に加熱されると熱分解ガスを発生させ、出口側に移動する。出口フード６１には加熱源が設けられていないため本有機物熱分解装置１の場合、内筒１１の中央部が一番温度が高く、この部分で熱分解ガスが発生する。このため本実施形態の有機物熱分解装置１では、内筒１１の中央部にガス排出管１２を設けている。 The pyrolysis gas is generated when the halogen-containing organic substance is heated to a temperature equal to or higher than the pyrolysis temperature. In the case of the present organic matter thermal decomposition apparatus 1, the raw material continuously supplied into the inner cylinder 11 through the raw material supply apparatus 51 is heated by the heat from the external heat furnace 21 to increase the temperature, and is heated to the thermal decomposition temperature or higher. Then, pyrolytic gas is generated and moved to the outlet side. Since the outlet hood 61 is not provided with a heating source, in the case of the present organic pyrolysis apparatus 1, the central portion of the inner cylinder 11 has the highest temperature, and pyrolysis gas is generated in this portion. For this reason, in the organic matter thermal decomposition apparatus 1 of this embodiment, the gas exhaust pipe 12 is provided in the center part of the inner cylinder 11.

発生した熱分解ガスを速やかに系外に排出するには、ガス排出管１２の本数を多くし、また内筒１１の軸方向に幅広く設けることが好ましいが、一方で、ガス排出管１２ａ、１２ｂの出口部１３ａ、１３ｂは、ガス回収室３１で覆われるため、内筒１１の軸方向に幅広くガス排出管１２を設けるとガス回収室３１の幅が広くなる。ガス回収室３１を広くするに従い、外熱炉２１の幅が狭くなるので、加熱の点からは内筒１１の軸方向に幅広くガス排出管１２ａ、１２ｂを設けることは好ましくない。以上の点を踏まえ、さらに熱分解温度、熱分解ガスの発生量からガス排出管１２の本数、位置を決めることが望ましい。 In order to quickly discharge the generated pyrolysis gas to the outside of the system, it is preferable to increase the number of gas discharge pipes 12 and to provide a wide range in the axial direction of the inner cylinder 11, but on the other hand, the gas discharge pipes 12a and 12b Since the outlet portions 13a and 13b are covered with the gas recovery chamber 31, if the gas discharge pipe 12 is provided widely in the axial direction of the inner cylinder 11, the width of the gas recovery chamber 31 becomes wider. As the gas recovery chamber 31 is made wider, the width of the external heating furnace 21 becomes narrower. Therefore, it is not preferable to provide the gas discharge pipes 12a and 12b widely in the axial direction of the inner cylinder 11 from the viewpoint of heating. Based on the above points, it is desirable to further determine the number and position of the gas exhaust pipes 12 from the pyrolysis temperature and the amount of pyrolysis gas generated.

本実施形態では、ガス排出管として略Ｌ字状のガス排出管１２を示したけれども、ガス排出管は、このガス排出管１２に限定されるものではない。ガス排出管は、内筒１１内で発生した熱分解ガスを速やかにガス回収室３１に排出するために設けるものであるから、原料及び／又は有機物残渣がガス回収室３１に排出されることなく、熱分解ガスをガス回収室に排出することができれば形状等は特に問われない。また原料及び／又は有機物残渣がガス回収室３１に排出されることなく、熱分解ガスをガス回収室３１に排出することができれば、ガス排出管に代え、ガス排出口を含む他の手段であってもよい。 In the present embodiment, the substantially L-shaped gas exhaust pipe 12 is shown as the gas exhaust pipe, but the gas exhaust pipe is not limited to the gas exhaust pipe 12. Since the gas discharge pipe is provided to quickly discharge the pyrolysis gas generated in the inner cylinder 11 to the gas recovery chamber 31, the raw material and / or organic residue is not discharged to the gas recovery chamber 31. The shape and the like are not particularly limited as long as the pyrolysis gas can be discharged into the gas recovery chamber. If the pyrolysis gas can be discharged to the gas recovery chamber 31 without discharging the raw material and / or organic residue to the gas recovery chamber 31, it is possible to replace the gas discharge pipe with other means including a gas discharge port. May be.

内筒１１の外周には、内筒１１を覆うように外熱炉２１及びガス回収室３１が設けられている。外熱炉２１は、内筒１１の原料入口部から中央部を加熱する第１外熱炉２２及び内筒１１の中央部から出口部を加熱する第２外熱炉２３からなる。第１外熱炉２２は、内筒１１の原料入口部から中央部の外周を覆うように取り付けられており、燃焼ガスなど加熱ガスを導入するための加熱ガス供給管２４が設けられている。第２外熱炉２３は、内筒１１の中央部から出口部を覆うように取り付けられており、第１外熱炉２２と第２外熱炉２３とは、加熱ガスが流通する連絡管２５で結ばれている。第２外熱炉２３には、加熱ガスを排出する加熱ガス排出管２６が設けられている。 An outer heat furnace 21 and a gas recovery chamber 31 are provided on the outer periphery of the inner cylinder 11 so as to cover the inner cylinder 11. The external heat furnace 21 includes a first external heat furnace 22 that heats the central portion from the raw material inlet portion of the inner cylinder 11 and a second external heat furnace 23 that heats the outlet portion from the central portion of the inner cylinder 11. The first external heating furnace 22 is attached so as to cover the outer periphery of the central portion from the raw material inlet portion of the inner cylinder 11, and is provided with a heated gas supply pipe 24 for introducing a heated gas such as a combustion gas. The 2nd external heating furnace 23 is attached so that an exit part may be covered from the center part of the inner cylinder 11, and the 1st external heating furnace 22 and the 2nd external heating furnace 23 are the communication pipe | tube 25 through which heating gas distribute | circulates. It is tied with. The second external heating furnace 23 is provided with a heated gas discharge pipe 26 that discharges the heated gas.

第１外熱炉２２及び第２外熱炉２３は、内筒１１とは異なり固定された状態で取付けられており、回転する内筒１１との接触部には、加熱ガスの漏れ出し、あるいは外気の漏れ込みを防止するためシール部材２７、２８が設けられている。外熱炉２１の外気と接触する部分は保温材が取り付けられており、加熱ガス供給管２４を介して供給される加熱ガスは、第１外熱炉２２、連絡管２５、第２外熱炉２３、加熱ガス排出管２６の順に流通し、内筒１１を加熱する。加熱ガスは、燃焼ガス、他の機器から排出される高温排ガス等、種々の加熱用ガスを使用可能であり、温度は、ハロゲン含有有機物の熱分解温度に応じて適宜決定すればよい。 The first external heat furnace 22 and the second external heat furnace 23 are mounted in a fixed state, unlike the inner cylinder 11, and the heated gas leaks out at the contact portion with the rotating inner cylinder 11, or Seal members 27 and 28 are provided to prevent leakage of outside air. A portion of the external heating furnace 21 that is in contact with the outside air is provided with a heat insulating material, and the heating gas supplied through the heating gas supply pipe 24 is supplied from the first external heating furnace 22, the communication pipe 25, and the second external heating furnace. 23 and the heated gas discharge pipe 26 are circulated in this order to heat the inner cylinder 11. As the heating gas, various heating gases such as combustion gas and high-temperature exhaust gas discharged from other devices can be used, and the temperature may be appropriately determined according to the thermal decomposition temperature of the halogen-containing organic substance.

ガス回収室３１は、ガス排出管１２（１２ａ、１２ｂ）を介して排出される熱分解ガスを集め、系外に排出するための部屋であり、第１外熱炉２２及び第２外熱炉２３と完全に区画された状態で、内筒１１の中央部の外周にガス排出管１２ａ、１２ｂの出口部１３ａ、１３ｂを覆うように設けられている。ガス回収室３１は、外熱炉２１と同様に固定された状態で取付けられており、回転する内筒１１との接触部には、加熱ガスの漏れ出し、あるいは外気の漏れ込みを防止するためシール部材３３が設けられている。ガス回収室３１に集められた熱分解ガスは、最終的にはガス浄化装置（図示を省略）に送られ浄化されるため、ガス量は少ない方が好ましい。このため熱分解ガスは、第１外熱炉２２及び第２外熱炉２３に供給される加熱ガスと混ざらないことが重要であり、そのためガス回収室３１と第１外熱炉２２及び第２外熱炉２３とは完全に分離されている。ガス回収室３１の幅は、ガス排出管１２の本数、配置で決まるが、大きさの一例を示すと、軸方向の長さが第１外熱炉２２の長さ１／３程度であり、内筒全長の１０〜１５％程度である。 The gas recovery chamber 31 is a room for collecting the pyrolysis gas discharged through the gas discharge pipes 12 (12a, 12b) and discharging it outside the system. The first external heat furnace 22 and the second external heat furnace In a state of being completely separated from the outer cylinder 23, the outer periphery of the central portion of the inner cylinder 11 is provided so as to cover the outlet portions 13 a and 13 b of the gas discharge pipes 12 a and 12 b. The gas recovery chamber 31 is mounted in a fixed state in the same manner as the external heating furnace 21, and prevents the heated gas from leaking out or the outside air from leaking into the contact portion with the rotating inner cylinder 11. A seal member 33 is provided. Since the pyrolysis gas collected in the gas recovery chamber 31 is finally sent to a gas purification device (not shown) and purified, it is preferable that the amount of gas is small. For this reason, it is important that the pyrolysis gas is not mixed with the heating gas supplied to the first external heating furnace 22 and the second external heating furnace 23. Therefore, the gas recovery chamber 31, the first external heating furnace 22, and the second external heating furnace 22 are not mixed. It is completely separated from the external heating furnace 23. The width of the gas recovery chamber 31 is determined by the number and arrangement of the gas exhaust pipes 12, but an example of the size is that the axial length is about 1/3 the length of the first external heating furnace 22, It is about 10 to 15% of the total length of the inner cylinder.

ガス回収室３１には、ガス排出管１２を介して排出される熱分解ガスを系外へ取り出すためのガス排気管３２が取り付けられており、内筒１１内で発生した熱分解ガスは、複数のガス排出管１２（１２ａ、１２ｂ）を通りガス回収室３１に集められ、さらにガス排気管３２を介して図示を省略したガス浄化装置に送られる。ガス回収室３１には、熱分解ガスの温度が低下しないように外気と接触する部分は保温材３４が取り付けられている。熱分解ガスの温度が低下し、熱分解ガスに含まれる水蒸気が凝縮すると、凝縮水にハロゲンガスが溶解し、内筒１１の外壁１４を激しく腐食させるので、ガス回収室３１の温度は、熱分解ガスに含まれる水蒸気が凝縮しないように維持することが重要である。保温材３４の施工のみでは、ガス回収室３１の温度が低下する場合には、ガス回収室３１内にバーナーなどの加熱手段を設けることが好ましい。但し、この加熱手段も燃焼排ガスを発生させないか、燃焼排ガスを発生させる場合であっても可能な限り量が少ないことが好ましい。 The gas recovery chamber 31 is provided with a gas exhaust pipe 32 for taking out the pyrolysis gas discharged through the gas discharge pipe 12 to the outside of the system, and a plurality of pyrolysis gases generated in the inner cylinder 11 are provided. The gas is collected in the gas recovery chamber 31 through the gas exhaust pipe 12 (12a, 12b), and further sent to the gas purification apparatus (not shown) through the gas exhaust pipe 32. In the gas recovery chamber 31, a heat insulating material 34 is attached to a portion in contact with the outside air so that the temperature of the pyrolysis gas does not decrease. When the temperature of the pyrolysis gas decreases and the water vapor contained in the pyrolysis gas condenses, the halogen gas dissolves in the condensed water, and the outer wall 14 of the inner cylinder 11 is severely corroded. It is important to keep the water vapor contained in the cracked gas from condensing. When the temperature of the gas recovery chamber 31 is lowered only by the construction of the heat insulating material 34, it is preferable to provide heating means such as a burner in the gas recovery chamber 31. However, it is preferable that this heating means does not generate combustion exhaust gas, or the amount is as small as possible even when generating combustion exhaust gas.

ガス回収室３１は、ガス排出管１２を介して排出される熱分解ガスを集め、系外に排出するための部屋であり、このような機能を備えるならば可能な限り狭い方が好ましい。ガス回収室３１の幅が広くなるに伴い、内筒１１の外壁１４の腐食リスクが大きくなり、さらに第１外熱炉２２及び第２外熱炉２３の幅が狭くなり加熱面積が低下する。加熱面積が低下すると加熱ガスとしてより温度の高いガスを使用する必要が生じるが、高温ガスの使用は、使用できるガスが限定され、さらに内筒１１、外熱炉２１、シール部材２７、２８の耐久性に大きく影響するため好ましくない。本実施形態では、ガス回収室３１と第１外熱炉２２及び第２外熱炉２３との間に空間を設けた例を示しているけれども、加熱面積の低下を防止するために、ガス回収室３１と第１外熱炉２２及び第２外熱炉２３との壁を共用とする構造としてもよい。但し、この場合でも、熱分解ガスと加熱ガスとが互いに混じり合わないようにすることが重要である。 The gas recovery chamber 31 is a room for collecting the pyrolysis gas discharged through the gas discharge pipe 12 and discharging it outside the system. The gas recovery chamber 31 is preferably as narrow as possible if it has such a function. As the width of the gas recovery chamber 31 is increased, the risk of corrosion of the outer wall 14 of the inner cylinder 11 is increased, and the widths of the first external heating furnace 22 and the second external heating furnace 23 are narrowed to reduce the heating area. When the heating area is reduced, it becomes necessary to use a gas having a higher temperature as the heating gas. This is not preferable because it greatly affects durability. In the present embodiment, an example is shown in which a space is provided between the gas recovery chamber 31 and the first external heat furnace 22 and the second external heat furnace 23, but in order to prevent a reduction in heating area, the gas recovery is performed. It is good also as a structure which uses the wall of the chamber 31 and the 1st external heating furnace 22 and the 2nd external heating furnace 23 in common. However, even in this case, it is important to prevent the pyrolysis gas and the heating gas from mixing with each other.

また有機物熱分解装置１は、原料供給側及び出口フード６１側から中央部に向かって掃気ガスを送り込む掃気ガス供給手段を備える。有機物熱分解装置１の原料供給側は、温度の低い原料が供給されるため中央部に比較し温度が低く、一方、出口フード６１には、加熱源が設けられていないためこの部分も温度が低下し易い。このような温度の低い部分は、熱分解ガスに含まれる水蒸気が凝縮し、さらに凝縮水にハロゲンガスが溶解することで腐食され易い。本実施形態では、温度の低い有機物熱分解装置１の両端部の腐食を防止するため、掃気ガス供給手段を介して原料供給側及び出口フード６１側から中央部に向かって掃気ガスを送る。 Moreover, the organic matter thermal decomposition apparatus 1 includes scavenging gas supply means for supplying scavenging gas from the raw material supply side and the outlet hood 61 side toward the center. Since the raw material supply side of the organic pyrolysis apparatus 1 is supplied with a raw material having a low temperature, the temperature is lower than that in the central portion. It tends to decrease. Such a low temperature part is easily corroded by condensing water vapor contained in the pyrolysis gas and further dissolving the halogen gas in the condensed water. In this embodiment, in order to prevent corrosion at both ends of the organic matter thermal decomposition apparatus 1 having a low temperature, the scavenging gas is sent from the raw material supply side and the outlet hood 61 side toward the central portion via the scavenging gas supply means.

原料供給側の掃気ガス供給手段は、入口フード５５を貫通し設けられた掃気ガス供給ノズル５７を備え、図示を省略した掃気ガス供給源から送られる掃気ガスが掃気ガス供給ノズル５７を介して内筒１１内に供給される。同様に出口フード６１側の掃気ガス供給手段は、出口フード６１を貫通し設けられた掃気ガス供給ノズル６４を備え、図示を省略した掃気ガス供給源から送られる掃気ガスが掃気ガス供給ノズル６４を介して内筒１１内に供給される。掃気ガスは、内筒１１の端部など温度の低下しやすい部分に熱分解ガスが侵入、滞留し、この部分を腐食することを防止するために供給するガスであるから、掃気ガス供給ノズル５７、６４を必要以上に内筒１１内に挿入すべきではない。入口フード５５、出口フード６１に供給するようにしてもよい。 The scavenging gas supply means on the raw material supply side includes a scavenging gas supply nozzle 57 provided through the inlet hood 55, and the scavenging gas sent from a scavenging gas supply source (not shown) passes through the scavenging gas supply nozzle 57. It is supplied into the cylinder 11. Similarly, the scavenging gas supply means on the outlet hood 61 side includes a scavenging gas supply nozzle 64 provided through the outlet hood 61, and the scavenging gas sent from a scavenging gas supply source (not shown) passes through the scavenging gas supply nozzle 64. To be supplied into the inner cylinder 11. The scavenging gas is a gas that is supplied to prevent the pyrolysis gas from entering and staying in a portion where the temperature is likely to decrease, such as the end of the inner cylinder 11, and corroding this portion. 64 should not be inserted into the inner cylinder 11 more than necessary. You may make it supply to the entrance hood 55 and the exit hood 61. FIG.

ここで使用可能な掃気ガスとしては、酸素濃度の低い燃焼ガス、窒素ガス、炭酸ガス、これらの混合ガス、さらにこれらガスと空気との混合ガスで酸素濃度が低いガス、過熱水蒸気が例示される。掃気ガスは、熱分解ガスに含まれる水蒸気の凝縮を防止する点から温度が高い方が好ましく、安価であることがより好ましい。過熱水蒸気は、飽和水蒸気をさらに加熱した水蒸気であり、このような過熱水蒸気は、例えば特願２０１０−０６５８０２に示すように塩素含有有機物からの塩素除去を促進するため好ましい。但し、過熱水蒸気を使用する場合は、十分な過熱度を有し、入口フード５５、出口フード６１で冷却され結露しない過熱度を備えることが重要である。 Examples of scavenging gas that can be used here include combustion gas having a low oxygen concentration, nitrogen gas, carbon dioxide gas, a mixed gas thereof, a mixed gas of these gas and air, a gas having a low oxygen concentration, and superheated steam. . The scavenging gas preferably has a higher temperature and more preferably is inexpensive because it prevents condensation of water vapor contained in the pyrolysis gas. Superheated steam is steam obtained by further heating saturated steam, and such superheated steam is preferable because, for example, as shown in Japanese Patent Application No. 2010-066582, the removal of chlorine from a chlorine-containing organic substance is promoted. However, when using superheated steam, it is important to have a degree of superheat that has a sufficient degree of superheat and is cooled by the inlet hood 55 and the outlet hood 61 and does not condense.

掃気ガスの供給量は、必要以上に多くすべきではない。掃気ガスは熱分解ガスと混合し、ガス回収室３１を経由してガス浄化装置に送られるため、処理すべきガス量が多くなるとガス浄化装置の負荷が増大するので好ましくない。 The supply of scavenging gas should not be more than necessary. Since the scavenging gas is mixed with the pyrolysis gas and sent to the gas purification device via the gas recovery chamber 31, an increase in the amount of gas to be processed is not preferable because the load on the gas purification device increases.

掃気ガス供給手段は、有機物熱分解装置１の端部の温度に応じて入口フード５５、出口フード６１のいずれか１方に設けてもよいが、腐食防止の観点からは両方に設けることが好ましい。なお、入口フード５５、出口フード６１を備えない外熱式ロータリーキルン方式の熱分解装置であっても、公知のように内筒１１の中心部に掃気ガス供給ノズルを設けることで掃気ガスを供給することは可能であり、さらに原料供給装置を備える場合であっても、原料供給装置のスクリューを収納する外筒を２重管とすることで容易に掃気ガスを供給することができる。 The scavenging gas supply means may be provided in any one of the inlet hood 55 and the outlet hood 61 according to the temperature of the end of the organic matter thermal decomposition apparatus 1, but is preferably provided in both from the viewpoint of preventing corrosion. . Note that, even in an externally heated rotary kiln type thermal decomposition apparatus that does not include the inlet hood 55 and the outlet hood 61, scavenging gas is supplied by providing a scavenging gas supply nozzle at the center of the inner cylinder 11 as is well known. In addition, even when a raw material supply device is provided, scavenging gas can be easily supplied by using a double tube as the outer cylinder that houses the screw of the raw material supply device.

以上のような構成からなる有機物熱分解装置１を備える有機物熱分解設備において、被処理物は、原料供給装置５１を介して内筒１１に連続的に定量供給される。内筒に連続的に定量供給された被処理物は、内筒１１の回転に従って内筒１１の入口から出口方向に移動する。この過程で、被処理物は、内筒１１の入口から中央付近にかけて徐々に温度を上昇させ、熱分解し脱ハロゲン化する。例えば、被処理物が塩化ビニル樹脂の場合、熱分解による脱塩反応は、２００℃付近から始まり４００℃付近まで継続され、この間に大部分の塩素が除去される。熱分解によりハロゲンが除去された有機物残渣は、排出ホッパー６２から系外に取り出される。一方、熱分解により発生する熱分解ガスは、掃気ガスと共にガス排出管１２を通じて速やかに、ガス回収室３１へ送られ、さらにガス排気管３２を通じて、速やかに系外に排出される。 In the organic matter pyrolysis equipment provided with the organic matter pyrolysis apparatus 1 having the above-described configuration, the object to be treated is continuously and quantitatively supplied to the inner cylinder 11 via the raw material supply device 51. The workpiece to be continuously supplied to the inner cylinder in a constant amount moves from the inlet of the inner cylinder 11 toward the outlet as the inner cylinder 11 rotates. In this process, the object to be processed gradually increases in temperature from the inlet of the inner cylinder 11 to the vicinity of the center, and is thermally decomposed and dehalogenated. For example, when the article to be treated is a vinyl chloride resin, the desalting reaction by thermal decomposition starts from around 200 ° C. and continues to around 400 ° C., during which most of the chlorine is removed. The organic residue from which halogen has been removed by thermal decomposition is taken out of the system from the discharge hopper 62. On the other hand, the pyrolysis gas generated by pyrolysis is promptly sent to the gas recovery chamber 31 through the gas discharge pipe 12 together with the scavenging gas, and is quickly discharged out of the system through the gas exhaust pipe 32.

以上のように本実施形態に示す有機物熱分解装置１は、有機物を熱分解したとき発生する熱分解ガスを速やかに系外に排出することができるので、有機物がハロゲン化合物を含有する有機物であり、発生する熱分解ガスにハロゲンガスが含まれていても有機物熱分解装置１は腐食し難い。また、熱分解ガスは、加熱炉２１に供給する加熱ガスと混合されないので、浄化処理すべきガス量が少なく好ましい。なお、上記実施形態に示すように有機物熱分解装置１に掃気ガス供給手段を設けることが好ましいが、掃気ガス供給手段を設けなくても、従来の有機物熱分解装置に比較し、本実施形態に示す有機物熱分解装置１は格段に腐食が抑制される。 As described above, the organic matter pyrolysis apparatus 1 shown in the present embodiment can quickly discharge the pyrolysis gas generated when pyrolyzing the organic matter to the outside of the system, so that the organic matter is an organic matter containing a halogen compound. Even if the generated pyrolysis gas contains a halogen gas, the organic pyrolysis apparatus 1 is hardly corroded. Further, since the pyrolysis gas is not mixed with the heating gas supplied to the heating furnace 21, the amount of gas to be purified is small and preferable. Although it is preferable to provide scavenging gas supply means in the organic pyrolysis apparatus 1 as shown in the above embodiment, even if no scavenging gas supply means is provided, this embodiment is compared with the conventional organic pyrolysis apparatus. In the organic pyrolysis apparatus 1 shown, corrosion is remarkably suppressed.

図２は、本発明の第２実施形態の有機物熱分解装置２を備える有機物熱分解設備の全体構成を示す断面図である。第１実施形態の有機物熱分解装置１と同一の構成には、同一の符号を付して説明を省略する。以下、第１実施形態の有機物熱分解装置１との相違点を中心に説明する。 FIG. 2 is a cross-sectional view showing the overall configuration of an organic matter pyrolysis facility including the organic matter pyrolysis apparatus 2 according to the second embodiment of the present invention. The same components as those of the organic pyrolysis apparatus 1 of the first embodiment are denoted by the same reference numerals and description thereof is omitted. Hereinafter, it demonstrates centering around difference with the organic matter thermal decomposition apparatus 1 of 1st Embodiment.

第２実施形態の有機物熱分解装置２は、第１実施形態の有機物熱分解装置１と基本的な構成は同じであるが、ガス回収室３１及び外熱炉２１の設置要領が異なる。有機物熱分解装置２は、ガス回収室３１が内筒１１の中央部に位置し、外熱炉２１とも明確に区画されている点では、有機物熱分解装置１と同じであるが、有機物熱分解装置２では、ガス回収室３１を覆うように外熱炉２１が設けられている。ガス回収室３１に設けられるガス排気管３２は、先端部が外熱炉２１の外に位置するように壁面を貫通し設置されている。このため外熱炉２１は、有機物熱分解装置１の外熱炉２１のように分割されていない。 The organic pyrolysis apparatus 2 of the second embodiment has the same basic configuration as the organic pyrolysis apparatus 1 of the first embodiment, but the installation procedure of the gas recovery chamber 31 and the external heat furnace 21 is different. The organic matter pyrolysis apparatus 2 is the same as the organic matter pyrolysis apparatus 1 in that the gas recovery chamber 31 is located in the center of the inner cylinder 11 and is clearly separated from the external heat furnace 21. In the apparatus 2, an external heating furnace 21 is provided so as to cover the gas recovery chamber 31. The gas exhaust pipe 32 provided in the gas recovery chamber 31 is installed through the wall surface so that the tip portion is located outside the external heating furnace 21. For this reason, the external heating furnace 21 is not divided | segmented like the external heating furnace 21 of the organic matter thermal decomposition apparatus 1. FIG.

第１実施形態の有機物熱分解装置１では、ガス回収室３１は、第１外熱炉２２と第２外熱炉２３との間に、それらと僅かな間隔を有した状態で設けられている。このような構造は、ガス回収室３１と外熱炉２１とが明確に分離されているので、ガス回収室３１に排出される熱分解ガスと外熱炉２１に供給される加熱ガスとが混合することはなく、さらに構造も単純で製作し易い。このように第１実施形態の有機物熱分解装置１で用いられるガス回収室３１及び外熱炉２１の設置要領は好ましい方法ではあるが、ガス回収室３１に加熱源が設けられていないので、ガス回収室３１の温度が低下する場合には、別途、加熱手段を設ける必要がある。これに対して、第２実施形態の有機物熱分解装置２では、ガス回収室３１が外熱炉２１の中に設けられているので、ガス回収室３１は外熱炉２１から熱を受ける。このためガス回収室３１内の温度が低下せず、ガス回収室３１を加熱するための加熱手段は不要である。また、ガス回収室３１と外熱炉２１との間に隙間がなく、外熱炉２１による加熱面積を無駄なく広く取ることができる。 In the organic matter pyrolysis apparatus 1 of the first embodiment, the gas recovery chamber 31 is provided between the first external heat furnace 22 and the second external heat furnace 23 with a slight gap therebetween. . In such a structure, since the gas recovery chamber 31 and the external heating furnace 21 are clearly separated, the pyrolysis gas discharged into the gas recovery chamber 31 and the heated gas supplied to the external heating furnace 21 are mixed. The structure is simple and easy to manufacture. Thus, although the installation procedure of the gas recovery chamber 31 and the external heating furnace 21 used in the organic matter thermal decomposition apparatus 1 of the first embodiment is a preferable method, the gas recovery chamber 31 is not provided with a heating source. When the temperature of the recovery chamber 31 decreases, it is necessary to provide a heating means separately. On the other hand, in the organic matter thermal decomposition apparatus 2 of the second embodiment, the gas recovery chamber 31 is provided in the external heating furnace 21, so that the gas recovery chamber 31 receives heat from the external heating furnace 21. For this reason, the temperature in the gas recovery chamber 31 does not decrease, and a heating means for heating the gas recovery chamber 31 is unnecessary. Further, there is no gap between the gas recovery chamber 31 and the external heating furnace 21, and the heating area by the external heating furnace 21 can be widened without waste.

以上のように第２実施形態の有機物熱分解装置２では、ガス回収室３１の温度低下対策が不要であり好ましいが、製作の点では第１実施形態の有機物熱分解装置１の方が容易であろう。よって発生する熱分解ガスにより、ガス回収室３１の温度を高く維持する必要がある場合には、第２実施形態の有機物熱分解装置２が好ましく、ガス回収室３１の温度を必ずしも高く維持する必要がないときは、製作容易な第１実施形態の有機物熱分解装置１が好ましいと言える。被処理物の熱分解温度等に応じて、適宜選択することが好ましい。 As described above, in the organic matter thermal decomposition apparatus 2 of the second embodiment, measures for lowering the temperature of the gas recovery chamber 31 are unnecessary and preferable. However, in terms of manufacturing, the organic matter thermal decomposition apparatus 1 of the first embodiment is easier. I will. Therefore, when it is necessary to keep the temperature of the gas recovery chamber 31 high due to the generated pyrolysis gas, the organic matter pyrolysis device 2 of the second embodiment is preferable, and the temperature of the gas recovery chamber 31 needs to be always kept high. When there is no, it can be said that the organic pyrolysis apparatus 1 of the first embodiment which is easy to manufacture is preferable. It is preferable to select appropriately according to the thermal decomposition temperature of the workpiece.

図３は、本発明の第３実施形態の有機物熱分解装置３を備える有機物熱分解設備の全体構成を示す断面図である。第１及び第２実施形態の有機物熱分解装置１、２と同一の構成には、同一の符号を付して説明を省略する。以下、第１及び第２実施形態の有機物熱分解装置１、２との相違点を中心に説明する。 FIG. 3 is a cross-sectional view showing the overall configuration of an organic matter pyrolysis facility including the organic matter pyrolysis apparatus 3 according to the third embodiment of the present invention. The same components as those of the organic pyrolysis apparatuses 1 and 2 of the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted. Hereinafter, the difference from the organic pyrolysis apparatuses 1 and 2 of the first and second embodiments will be mainly described.

第３実施形態の有機物熱分解装置３は、第１及び第２実施形態の有機物熱分解装置１、２と同様、外熱式ロータリーキルン方式の有機物熱分解装置３であるが、内筒１１が直径の異なる２つの内筒、第１内筒１５、第２内筒１６からなる点が、第１及び第２実施形態の有機物熱分解装置１、２と大きく異なる。 The organic matter pyrolysis apparatus 3 of the third embodiment is an externally heated rotary kiln type organic matter pyrolysis apparatus 3 similar to the organic matter pyrolysis apparatuses 1 and 2 of the first and second embodiments, but the inner cylinder 11 has a diameter. The point which consists of two different inner cylinders, the 1st inner cylinder 15, and the 2nd inner cylinder 16 differs greatly from the organic matter thermal decomposition apparatuses 1 and 2 of 1st and 2nd embodiment.

第１内筒１５及び第２内筒１６は、金属製のパイプ状部材であり、略同一の長さを有し、第１内筒１５の外径は、第２内筒１６の内径に比較し僅かに小さく、第１内筒１５と第２内筒とが部分的に重なり合うように第１内筒１５の一端部が、第２内筒１６の一端部に挿入されている。第１内筒１５は、両端部に回転リングを備え、回転リング７１、７２は、架台４３に取り付けられたローラ７４、７５で回転自在に支持されている。同様に第２内筒１６も、両端部に回転リングを備え、回転リング７６、７７は、架台４３に取り付けられたローラ７８、７９で回転自在に支持されている。第１内筒１５と第２内筒１６とは中心軸が一致するように設置され、全体として原料供給側に比べ、出口部側が若干低くなるように水平面に対して若干傾斜した状態で設置されている。 The first inner cylinder 15 and the second inner cylinder 16 are metal pipe-like members, have substantially the same length, and the outer diameter of the first inner cylinder 15 is compared with the inner diameter of the second inner cylinder 16. However, one end of the first inner cylinder 15 is inserted into one end of the second inner cylinder 16 so that the first inner cylinder 15 and the second inner cylinder partially overlap each other. The first inner cylinder 15 includes rotating rings at both ends, and the rotating rings 71 and 72 are rotatably supported by rollers 74 and 75 attached to the gantry 43. Similarly, the second inner cylinder 16 also includes rotating rings at both ends, and the rotating rings 76 and 77 are rotatably supported by rollers 78 and 79 attached to the gantry 43. The first inner cylinder 15 and the second inner cylinder 16 are installed so that the central axes thereof coincide with each other, and are installed in a slightly inclined state with respect to the horizontal plane so that the outlet side is slightly lower than the raw material supply side as a whole. ing.

第１内筒１５と第２内筒１６とは、挿入部が一定の隙間１７を維持した状態で図示を省略した連結部材で連結され、一体的に回転する。第１内筒１５と第２内筒１６との回転は、第１内筒１１の一端部に設けられた回転ギア４７が駆動モータ４８に連結する駆動ギア４９にかみ合い、駆動モータ４８の駆動により回転させられる。なお、第１内筒１５及び第２内筒１６は、それぞれに駆動モータを設け別々に回転駆動させてもよい。 The first inner cylinder 15 and the second inner cylinder 16 are connected by a connecting member (not shown) while the insertion portion maintains a constant gap 17 and rotate integrally. The rotation of the first inner cylinder 15 and the second inner cylinder 16 is caused by the rotation gear 47 provided at one end of the first inner cylinder 11 meshing with the drive gear 49 connected to the drive motor 48, Rotated. In addition, the first inner cylinder 15 and the second inner cylinder 16 may be provided with a drive motor and rotated separately.

第１内筒１５及び第２内筒１６には、第１及び第２実施形態の有機物熱分解装置１、２と異なり、ガス排出管１２は設けられていない。本有機物熱分解装置３では、第１内筒１５と第２内筒１６との隙間１７がガス排出管１２の役目を果たし、熱分解ガスはこの隙間１７を通ってガス回収室３１に排出する。第１内筒１５と第２内筒１６との挿入部の隙間１７は小さく、所定の長さの重なり合いが設けられているため、被処理物及び／又は有機物残渣が、この隙間１７からガス回収室３１に排出されることはない。被処理物及び／又は有機物残渣のガス回収室３１への排出が懸念される場合は、必要に応じて金網、金属ブラシなどを設け、被処理物及び／又は有機物残渣の排出を防止しつつ熱分解ガスを排出させればよい。 Unlike the organic pyrolysis apparatuses 1 and 2 of the first and second embodiments, the first inner cylinder 15 and the second inner cylinder 16 are not provided with the gas discharge pipe 12. In the present organic matter thermal decomposition apparatus 3, a gap 17 between the first inner cylinder 15 and the second inner cylinder 16 serves as the gas discharge pipe 12, and the pyrolysis gas is discharged into the gas recovery chamber 31 through the gap 17. . Since the gap 17 in the insertion portion between the first inner cylinder 15 and the second inner cylinder 16 is small and an overlap of a predetermined length is provided, an object to be processed and / or organic residue is recovered from the gap 17 by gas recovery. It is not discharged into the chamber 31. If there is a concern about the discharge of the object to be processed and / or organic residue into the gas recovery chamber 31, a wire net, a metal brush, etc. are provided as necessary to prevent the discharge of the object to be processed and / or the organic substance residue. What is necessary is just to discharge cracked gas.

ガス回収室３１は、第１内筒１５と第２内筒１６との挿入部を覆うように設けられ、第１内筒１５と第２内筒１６との挿入部の隙間１７から排出される熱分解ガスを集める。第１内筒１５と第２内筒１６との挿入部は、第１内筒１５と第２内筒１６との中央部に位置し、熱分解ガスが有機物熱分解装置３の中央部から排出される点は、有機物熱分解装置１、２と同じ考え方に基づく。本実施形態の有機物熱分解装置３では、第１内筒１５と第２内筒１６との隙間１７を通って熱分解ガスが排出するので、第２内筒１６の端部近傍のみを覆うようにガス回収室３１を設ければよい。このためガス回収室３１の幅は狭くてもよく、第１加熱炉２２、第２加熱炉２３を広くすることができる。 The gas recovery chamber 31 is provided so as to cover the insertion portion between the first inner cylinder 15 and the second inner cylinder 16 and is discharged from the gap 17 of the insertion portion between the first inner cylinder 15 and the second inner cylinder 16. Collect pyrolysis gas. The insertion portion of the first inner cylinder 15 and the second inner cylinder 16 is located at the center of the first inner cylinder 15 and the second inner cylinder 16, and the pyrolysis gas is discharged from the center of the organic matter pyrolysis apparatus 3. This is based on the same concept as the organic matter pyrolysis apparatuses 1 and 2. In the organic matter thermal decomposition apparatus 3 of the present embodiment, the pyrolysis gas is discharged through the gap 17 between the first inner cylinder 15 and the second inner cylinder 16, so that only the vicinity of the end of the second inner cylinder 16 is covered. What is necessary is just to provide the gas recovery chamber 31 in this. For this reason, the width | variety of the gas collection | recovery chamber 31 may be narrow, and the 1st heating furnace 22 and the 2nd heating furnace 23 can be enlarged.

一般的に有機物熱分解装置が大型化すると、内筒１１の長さが長くなるため内筒１１の撓みが問題となる。外熱式ロータリーキルン方式の有機物熱分解装置の場合、内筒１１は回転し、外熱炉２１及びガス回収室３１は固定されているため、内筒１１の中央部に撓みが生じると、内筒１１と外熱炉２１及びガス回収室３１との間のシールが問題となる。これに対して、第３実施形態の有機物熱分解装置３では、内筒１１が分離し、それぞれの内筒１５、１６は、それぞれの両端で支持されているため、有機物熱分解装置を大型化しても、一本の内筒１１からなる有機物熱分解装置に比較し、撓みを大幅に小さくすることができる。これにより内筒１１と外熱炉２１及びガス回収室３１との間のシールも従来のシール手段を採用することができる。このように有機物熱分解装置を大型化する場合には、第３実施形態の有機物熱分解装置３を好適に使用することができる。 In general, when the organic pyrolysis apparatus is enlarged, the length of the inner cylinder 11 becomes longer, so that the bending of the inner cylinder 11 becomes a problem. In the case of an organic thermal decomposition apparatus of the external heat type rotary kiln system, the inner cylinder 11 rotates and the outer heat furnace 21 and the gas recovery chamber 31 are fixed. 11 and the seal between the external heating furnace 21 and the gas recovery chamber 31 becomes a problem. On the other hand, in the organic matter thermal decomposition apparatus 3 of the third embodiment, the inner cylinder 11 is separated, and the inner cylinders 15 and 16 are supported at both ends. Even if compared with the organic matter thermal decomposition apparatus which consists of the one inner cylinder 11, bending can be made small significantly. As a result, the sealing between the inner cylinder 11 and the external heating furnace 21 and the gas recovery chamber 31 can also employ conventional sealing means. Thus, when enlarging an organic matter thermal decomposition apparatus, the organic matter thermal decomposition apparatus 3 of 3rd Embodiment can be used conveniently.

１有機物熱分解装置
２有機物熱分解装置
３有機物熱分解装置
１１内筒
１２、１２ａ、１２ｂガス排出管
１３ａ、１３ｂガス排出管の出口部
１４内筒の外壁
１５第１内筒
１６第２内筒
１７隙間
２１外熱炉
２２第１外熱炉
２３第２外熱炉
３１ガス回収室
３２ガス排気管
３４保温材
５７掃気ガス供給ノズル
６４掃気ガス供給ノズル DESCRIPTION OF SYMBOLS 1 Organic substance thermal decomposition apparatus 2 Organic substance thermal decomposition apparatus 3 Organic substance thermal decomposition apparatus 11 Inner cylinder 12, 12a, 12b Gas exhaust pipe 13a, 13b Outlet part 14 of an exhaust pipe Inner cylinder outer wall 15 First inner cylinder 16 Second inner cylinder 17 Clearance 21 External Heat Furnace 22 First External Heat Furnace 23 Second External Heat Furnace 31 Gas Recovery Chamber 32 Gas Exhaust Pipe 34 Insulating Material 57 Scavenging Gas Supply Nozzle 64 Scavenging Gas Supply Nozzle

Claims

An organic pyrolysis apparatus of an external heating type rotary kiln system in which an external heating furnace is provided so as to cover an inner cylinder, capable of continuously pyrolyzing an organic substance containing a halogen compound,
The inner cylinder provided with a gas outlet for discharging the pyrolysis gas to the outside;
A gas recovery chamber that is provided on the outer periphery of the inner cylinder and covers the gas discharge port;
E Bei and a gas exhaust pipe for exhausting the discharged pyrolysis gas into the gas collection chamber,
The inner cylinder is not partitioned inside, and the generated pyrolysis gas can fill the entire inner cylinder,
The organic matter thermal decomposition apparatus , wherein the gas discharge port is provided in a central portion of the inner cylinder and in a place having the highest temperature .

The organic pyrolysis apparatus according to claim 1, further comprising means for keeping warm or heating the pyrolysis gas discharged into the gas recovery chamber at a temperature equal to or higher than an acid dew point .

The inner cylinder is composed of two inner cylinders having different diameters, the inner diameter of one inner cylinder is slightly larger than the outer diameter of the other inner cylinder, and one inner cylinder is partially inserted into the other inner cylinder. ,
The gas discharge port is a gap in a portion where the one inner cylinder is partially inserted into the other inner cylinder ;
The gap, when viewed two inner cylinder having different diameters as one of the inner cylinder, at the central portion of the inner cylinder, and according to claim 1 or 2, characterized in that located on the highest point of the temperature Organic pyrolysis equipment.

The two inner cylinders have substantially the same length,
4. The organic matter thermal decomposition apparatus according to claim 3, wherein the two inner cylinders are connected to each other and rotate integrally with a single driving device .

The organic pyrolysis apparatus according to any one of claims 1 to 4, wherein the external heat furnace is divided into left and right, and the gas recovery chamber is disposed between the left and right external heat furnaces.

The external heating furnace consists of one external heating furnace without being divided,
The gas recovery chamber is disposed in an external heating furnace, and the entire gas recovery chamber is covered with an external heating furnace,
5. The organic matter pyrolysis apparatus according to claim 1, wherein the gas exhaust pipe guides the pyrolysis gas to the outside of the external heat furnace .

Further both ends of the inner cylinder, comprising a scavenging gas supply means for supplying a scavenging gas toward the central portion of the inner cylinder,
The scavenging gas, pyrolysis gas is retained in the end portion of at least the inner cylinder, organic pyrolysis according to any one of claims 1 to 6 in which the portion is characterized in that to prevent corrosion apparatus.

The scavenging gas is superheated steam;
The organic matter thermal decomposition apparatus according to claim 7 , wherein the superheated steam has a degree of superheat that does not cause condensation in the inner cylinder and / or the gas recovery chamber.