JP2005265323A - Rotary kiln device and pyrolyzing facility - Google Patents

Rotary kiln device and pyrolyzing facility Download PDF

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JP2005265323A
JP2005265323A JP2004079506A JP2004079506A JP2005265323A JP 2005265323 A JP2005265323 A JP 2005265323A JP 2004079506 A JP2004079506 A JP 2004079506A JP 2004079506 A JP2004079506 A JP 2004079506A JP 2005265323 A JP2005265323 A JP 2005265323A
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rotary kiln
stirring
conveying
thermal decomposition
facility
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Yoshiyuki Kashiwagi
佳行 柏木
Hiroyuki Ishikawa
博之 石川
Keiji Yasuda
圭児 安田
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Meidensha Corp
株式会社明電舎
Tokai Techno Kk
東海テクノ株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To perform stirring and transport of crude material and its pyrolysis by forming vanes for stirring and transport in the optimum conditions according to the properties of the crude material to be stirred and transported. <P>SOLUTION: At 90-degs. intervals in axial direction, parts 27 furnished at the inside surfaces with dovetail grooves 27a are formed on the inner walls of rotary kilns 1 and 2 formed in a cylindrical shape rotatably, and a vane 28 for stirring and transport is inserted removably in each dovetail groove 27a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は、各種の有機性物質を含む原料(各種の有機物を含む固形物、各種汚泥、土壌等)を熱分解反応により減用、減量化する施設に係り、特に回転キルンにおける攪拌・搬送羽根の変更を容易にする回転キルン装置及び熱分解施設に関するものである。   The present invention relates to a facility for reducing and reducing the amount of raw materials containing various organic substances (solids containing various organic substances, various sludges, soils, etc.) by a thermal decomposition reaction, and in particular, a stirring / conveying blade in a rotary kiln The present invention relates to a rotary kiln apparatus and a thermal decomposition facility that facilitate the change of the above.
各種原料(被処理物)である各種有機性物質、各種汚泥、土壌、土砂等を、間接加熱による還元性の雰囲気において熱分解を行い、乾燥、炭化、灰化、浄化等の加工を加えることが行われている。回転キルンの内部に原料を収納して間接加熱により原料を熱分解する熱分解手段を使用する場合、回転キルンの内部には、原料の攪拌と搬送を加熱効率を含めて効果的に行うための工夫が施されている。例えば、複数の羽根の設置、炉内壁の工夫等である。   Various raw materials (treated materials), various organic substances, various sludges, soil, earth and sand, etc. are pyrolyzed in a reducing atmosphere by indirect heating, and processing such as drying, carbonization, ashing, purification is added. Has been done. When using a pyrolysis means that contains raw materials inside the rotary kiln and thermally decomposes the raw materials by indirect heating, the rotary kiln is designed to effectively stir and transport the raw materials including heating efficiency. Ingenuity is given. For example, installation of a plurality of blades, a device for the furnace inner wall, and the like.
特許文献1,4においては、回転キルン内の伝熱管(羽根)を前方側に傾斜させて設けており、特許文献2、3においては、回転キルンを上流側から下流側に向けて下方に傾斜させて配置するとともに、回転キルンの内壁に羽根を固定しており、特許文献4においても、回転キルンの内壁に羽根を固定しており、特許文献5においては、回転キルンは傾斜して設けられるとともに、回転キルンの内壁は多角形に形成されており、やはり攪拌・搬送が効果的に行われるようにしている。   In Patent Documents 1 and 4, the heat transfer tube (blade) in the rotary kiln is provided to be inclined forward, and in Patent Documents 2 and 3, the rotary kiln is inclined downward from the upstream side toward the downstream side. The blades are fixed to the inner wall of the rotary kiln. Also in Patent Document 4, the blades are fixed to the inner wall of the rotary kiln. In Patent Document 5, the rotary kiln is provided with an inclination. At the same time, the inner wall of the rotary kiln is formed in a polygonal shape, so that stirring and transport can be effectively performed.
又、特許文献6においては、回転キルンの内壁に形状を工夫した羽根を固定しており、特許文献7においては、回転キルンの内壁に形状と配置を工夫した羽根が設けられ、特許文献8においては、回転キルンの内壁にピン状突起物を所定間隔で設けたものが示され、特許文献9においては、回転キルンの内壁に形状と配置を工夫した羽根を設けており、特許文献10においては、回転キルンの内壁に複数の螺旋状のリフタを設けている。
特開2002−156105号公報 特開2000−97567号公報 特開2000−153523号公報 特開2000−249475号公報 特開平7−120161号公報 特開平8−110164号公報 特開平11−63830号公報 特開平10−267239号公報 特開平10−54523号公報 特開平8−233234号公報
Moreover, in patent document 6, the blade which devised the shape was fixed to the inner wall of a rotation kiln, and in patent document 7, the blade | wing which devised the shape and arrangement | positioning was provided in the inner wall of the rotation kiln. Shows that the pin-shaped projections are provided at predetermined intervals on the inner wall of the rotary kiln. In Patent Document 9, the inner wall of the rotary kiln is provided with blades devised in shape and arrangement. In Patent Document 10, A plurality of spiral lifters are provided on the inner wall of the rotary kiln.
JP 2002-156105 A JP 2000-97567 A JP 2000-153523 A JP 2000-249475 A JP-A-7-120161 JP-A-8-110164 Japanese Patent Laid-Open No. 11-63830 Japanese Patent Laid-Open No. 10-267239 Japanese Patent Laid-Open No. 10-54523 JP-A-8-233234
上記したように、従来の回転キルン装置及び熱分解施設においては、回転キルン内に原料の攪拌と搬送を行う羽根を備えており、この羽根は原料の性状、滞留時間、回転キルンの回転数等を考慮して、その高さ、長さ、傾斜角等が決定されている。しかしながら、各種原料の性状に応じた羽根の形状や配置の条件は、技術的蓄積はあるものの、実運転を行って見ないと不明であり、従来においては、回転キルン内の羽根は何れも固定されているので、羽根の設置位置等の変更は容易ではなく、回転キルンの回転数の調整(滞留時間の調整)や加熱温度の調整といった限られた手段によって対応することとなった。   As described above, in the conventional rotary kiln apparatus and the thermal decomposition facility, the rotary kiln is provided with blades for stirring and conveying the raw material, and the blades have properties of the raw material, residence time, rotational speed of the rotary kiln, etc. The height, length, inclination angle, etc. are determined in consideration of the above. However, although the blade shape and arrangement conditions according to the properties of various raw materials are technically accumulated, it is unclear unless they are actually operated, and conventionally, all the blades in the rotary kiln are fixed. Therefore, it is not easy to change the blade installation position and the like, and it has been dealt with by limited means such as adjustment of the rotational speed of the rotary kiln (adjustment of residence time) and adjustment of the heating temperature.
又、実負荷試験に適した量の原料の入手が困難な場合が多々あり、少量の原料でのサンプル試験結果は良好であり、これに基づき羽根の条件を決定しても、実負荷時においてはサンプル試験の結果と乖離することも現実にはある。これは、原料に対して最適な熱分解処理が行えないこと、加熱源燃料の消費量が増加すること、及び運転時間が長期化すること等による施設の運転コストの増加が原因である。   In addition, there are many cases where it is difficult to obtain the amount of raw material suitable for the actual load test, and the sample test result with a small amount of raw material is good. In reality, there is a discrepancy with the results of sample tests. This is due to an increase in the operating cost of the facility due to the fact that the optimum pyrolysis treatment cannot be performed on the raw material, the consumption of the heating source fuel increases, and the operation time is prolonged.
発明者は、事前のサンプル試験の結果と実負荷試験との乖離の解消を容易にすること、及び回転キルンの回転数、加熱温度の調整といった限られた条件での対応ではなく、より柔軟な対応によって原料の効果的な加熱分解処理を行うことを目指して、鋭意検討した。その結果、従来の回転キルンにおける攪拌・搬送羽根は固定であるから、調整範囲が限られていたので、羽根の変更が容易となるように、回転キルンの内壁に設ける羽根を着脱自在とすることに着目した。これにより、各種原料の性状に容易に対応することができ、また同じ名称で括られる原料においてもその発生場所等によりその性状に微妙な相違があり、このような場合の対応が容易となることを見出した。   The inventor makes it easier to eliminate the discrepancy between the result of the previous sample test and the actual load test, and is more flexible than the limited conditions such as adjusting the rotation speed and heating temperature of the rotary kiln. With the aim of carrying out effective thermal decomposition treatment of raw materials according to the response, we have intensively studied. As a result, since the stirring / conveying blades in the conventional rotary kiln are fixed, the adjustment range is limited, so that the blades provided on the inner wall of the rotary kiln can be attached and detached so that the blades can be easily changed. Focused on. As a result, it is possible to easily cope with the properties of various raw materials, and there are subtle differences in the properties of raw materials with the same name depending on the location of the occurrence, etc., making it easy to handle such cases. I found.
この発明は上記のような課題を解決するために成されたものであり、攪拌・搬送対象の原料の性状に応じて最適な条件の攪拌・搬送羽根とすることができ、原料の攪拌・搬送を効率的に行うことができ、これによって原料に最適な熱分解を効果的に行うことができる回転キルン装置及び熱分解施設を得ることを目的とする。   The present invention has been made to solve the above-described problems, and can be used as an agitating / conveying blade under optimum conditions according to the properties of the raw material to be agitated / conveyed. It is an object of the present invention to obtain a rotary kiln device and a thermal decomposition facility that can efficiently perform the thermal decomposition that is optimal for the raw material.
この発明の請求項1に係る回転キルン装置は、回転自在で筒状の回転キルン内の周方向及び軸方向に複数の攪拌・搬送羽根を備えた回転キルン装置において、攪拌・搬送羽根を着脱自在としたものである。   A rotary kiln apparatus according to claim 1 of the present invention is a rotary kiln apparatus that includes a plurality of stirring / conveying blades in a circumferential direction and an axial direction in a cylindrical rotating kiln that is rotatable. It is what.
請求項2に係る熱分解施設は、回転自在で筒状の回転キルン内の周方向及び軸方向に複数の攪拌・搬送羽根を設けるとともに、回転キルンの両端部に原料の導入手段と排出手段を設け、回転キルンの内部に原料を収納して間接加熱により原料を熱分解する熱分解手段を備えた熱分解施設において、上記攪拌・搬送羽根を着脱自在としたものである。   The thermal decomposition facility according to claim 2 is provided with a plurality of stirring / conveying blades in a circumferential direction and an axial direction in a rotatable and cylindrical rotary kiln, and raw material introducing means and discharging means at both ends of the rotary kiln. The agitating / conveying blade is detachable in a thermal decomposition facility provided with a thermal decomposition means for storing a raw material in a rotary kiln and thermally decomposing the raw material by indirect heating.
請求項3に係る熱分解施設は、上記攪拌・搬送羽根が、回転キルンの内壁に形成した蟻溝に挿着したものであるものである。   According to a third aspect of the present invention, the agitation / conveying blade is inserted into a dovetail groove formed on the inner wall of the rotary kiln.
請求項4に係る熱分解施設は、上記攪拌・搬送羽根が、複数に分割して回転キルンの略全長に渡って設けたものであるものである。   According to a fourth aspect of the present invention, the agitation / conveying blade is divided into a plurality of parts and provided over substantially the entire length of the rotary kiln.
請求項5に係る熱分解施設は、上記攪拌・搬送羽根が、一体に構成して回転キルンの略全長に渡って設けたものであるものである。   In the thermal decomposition facility according to claim 5, the agitation / conveying blade is integrally formed and provided over substantially the entire length of the rotary kiln.
請求項6に係る熱分解施設は、上記攪拌・搬送羽根が、回転キルンの軸心方向に対してゼロ度以上の傾斜角を備えたものであるものである。   In the pyrolysis facility according to claim 6, the agitating / conveying blade is provided with an inclination angle of zero degrees or more with respect to the axial direction of the rotary kiln.
請求項7に係る熱分解施設は、上記攪拌・搬送羽根が、回転キルンの軸心方向に対して向芯又は偏芯しているものであるものである。   In the thermal decomposition facility according to claim 7, the agitation / conveying blade is eccentric or eccentric with respect to the axial direction of the rotary kiln.
以上のようにこの発明によれば、攪拌・搬送羽根を回転キルンの内壁に着脱自在に設けており、攪拌・搬送対象の原料の性状に応じて最適な形状、配置の攪拌・搬送羽根と交換することができ、これによって原料の攪拌・搬送を加熱効率も含めて効率的に行うことができ、これによって原料に最適な熱分解を効果的に行うことができる。従って、加熱源燃料の削減、運転時間の短縮等施設の運転コストの削減が図れる。   As described above, according to the present invention, the stirring / conveying blade is detachably provided on the inner wall of the rotary kiln, and is replaced with the stirring / conveying blade having the optimum shape and arrangement in accordance with the properties of the raw material to be stirred / conveyed. This makes it possible to efficiently stir and convey the raw material including the heating efficiency, thereby effectively performing the optimum thermal decomposition on the raw material. Therefore, it is possible to reduce the operating cost of the facility, such as reducing the heat source fuel and the operating time.
以下、この発明を実施するための最良の形態を図面とともに説明する。図2はこの発明の実施最良形態による熱分解施設の構成図を示し、1,2は筒状の回転キルンであり、回転キルン1,2の周囲には回転キルン1,2をそれぞれ外部から加熱する外部加熱手段3,4が設けられ、回転キルン1と外部加熱手段3とにより乾燥炉(加熱熱風温度300〜450℃)が形成され、回転キルン2と外部加熱手段4とにより炭化炉(加熱熱風温度400〜650℃)が形成される。外部加熱手段4には燃焼バーナを有する熱風炉5から熱風ガスが導入され、この熱風ガスは外部加熱手段3にも導入された後、配管19を介して排気される。   The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram of a thermal decomposition facility according to the best mode of the present invention. Reference numerals 1 and 2 denote cylindrical rotary kilns. The rotary kilns 1 and 2 are heated from the outside around the rotary kilns 1 and 2, respectively. External heating means 3 and 4 are provided, a rotary kiln 1 and external heating means 3 form a drying furnace (heating hot air temperature 300 to 450 ° C.), and a rotary kiln 2 and external heating means 4 form a carbonization furnace (heating Hot air temperature 400-650 ° C.) is formed. Hot air gas is introduced into the external heating means 4 from a hot air furnace 5 having a combustion burner, and this hot air gas is also introduced into the external heating means 3 and then exhausted through a pipe 19.
回転キルン1の一端側には、原料を保留するホッパ6、モータ駆動の搬送手段7及び投入ボックス8が設けられ、回転キルン1の他端側には回転キルン2の他端側にまたがって接続ボックス9が設けられている。又、回転キルン1の両端寄り部分の外周には環状の突出部1a,1bが設けられ、突出部1a,1bは回転支持ローラ10,11により回転自在に支持される。又、回転キルン1の突出部1b側にはスプロケットが設けられ、このスプロケットと駆動源であるモータ12とはチェーン13によって連結されている。   At one end of the rotary kiln 1, a hopper 6 for holding the raw material, a motor-driven transfer means 7 and a charging box 8 are provided, and the other end of the rotary kiln 1 is connected across the other end of the rotary kiln 2. A box 9 is provided. In addition, annular protrusions 1 a and 1 b are provided on the outer periphery of the portion near both ends of the rotary kiln 1, and the protrusions 1 a and 1 b are rotatably supported by the rotation support rollers 10 and 11. A sprocket is provided on the projecting portion 1 b side of the rotary kiln 1, and the sprocket and a motor 12 that is a driving source are connected by a chain 13.
又、同様にして、回転キルン2の両端寄り部分にも突出部2a,2bが設けられ、突出部2a,2bは回転支持ローラ14,15により回転自在に支持され、回転キルン2とモータ16とはスプロケットを介してチェーン17により連結される。又、回転キルン2の一端側には回収ボックス18が設けられている。   Similarly, protrusions 2a and 2b are provided at both end portions of the rotary kiln 2, and the protrusions 2a and 2b are rotatably supported by the rotation support rollers 14 and 15, respectively. Are connected by a chain 17 via a sprocket. A collection box 18 is provided on one end side of the rotary kiln 2.
又、配管19には配管20が分岐接続され、配管20には循環ブロア21及びエゼクタブロア22が設けられ、配管20はエゼクタ及び燃焼バーナを有するガス燃焼炉23に接続される。又、ガス燃焼炉23には配管24を介して接続ボックス9が接続され、原料の乾燥処理により発生した乾留ガスや水蒸気等からなる分解ガスが送入され、燃焼浄化される。ガス燃焼炉23からの燃焼排ガスは気体ー気体熱交換機25等を介して排出される。熱交換機25と熱風炉5とは配管26により接続されている。   A pipe 20 is branched and connected to the pipe 19, and a circulation blower 21 and an ejector blower 22 are provided in the pipe 20. The pipe 20 is connected to a gas combustion furnace 23 having an ejector and a combustion burner. Further, the connection box 9 is connected to the gas combustion furnace 23 through a pipe 24, and a cracked gas made of dry distillation gas, water vapor, etc. generated by the raw material drying process is fed into the gas combustion furnace 23 for combustion purification. The combustion exhaust gas from the gas combustion furnace 23 is discharged through the gas-gas heat exchanger 25 and the like. The heat exchanger 25 and the hot stove 5 are connected by a pipe 26.
図1(a)〜(d)はそれぞれ回転キルン装置の側面図、攪拌・搬送羽根の正面図、側面図及び平面図を示し、回転キルン1,2の内壁には90度間隔でその長さ方向に沿って4本の蟻溝形成部27が溶接により取り付けられ、蟻溝形成部27の内面側には蟻溝27aが形成されている。この蟻溝27aには攪拌・搬送羽根28の支持部28aが着脱自在に挿入され、支持部28aの内面上にはその長さ方向に一定間隔で羽根部28bが溶接される。羽根部28bは長さL、高さH、回転キルン1,2の軸芯方向に対する角度θの異なるものを各種準備し、搬送対象の原料の性状に応じた最適な条件の羽根部28bを選択する。支持部28aは回転キルン1,2の略全長に渡って設けられているが、分割部分28cにおいて複数に分割されている。29は支持部28aと支持部28aに溶接された羽根部28bとからなる攪拌・搬送羽根28の分割単位ブロックである。こうして、回転キルン1,2の周方向及び軸方向に複数の攪拌・搬送羽根28が着脱自在に設けられる。   1 (a) to 1 (d) show a side view of a rotary kiln apparatus, a front view, a side view and a plan view of a stirring / conveying blade, respectively, and the length of the inner walls of the rotary kilns 1 and 2 at intervals of 90 degrees. Four dovetail groove forming portions 27 are attached by welding along the direction, and dovetail grooves 27 a are formed on the inner surface side of the dovetail groove forming portion 27. A support portion 28a of the stirring / conveying blade 28 is detachably inserted into the dovetail groove 27a, and the blade portions 28b are welded at regular intervals in the length direction on the inner surface of the support portion 28a. Various types of blades 28b having different lengths L, heights H, and angles θ with respect to the axial directions of the rotary kilns 1 and 2 are prepared, and the blades 28b having the optimum conditions according to the properties of the material to be conveyed are selected. To do. The support portion 28a is provided over substantially the entire length of the rotary kilns 1 and 2, but is divided into a plurality at the divided portion 28c. Reference numeral 29 denotes a divided unit block of the agitating / conveying blade 28 including a support portion 28a and a blade portion 28b welded to the support portion 28a. Thus, a plurality of stirring / conveying blades 28 are detachably provided in the circumferential direction and the axial direction of the rotary kilns 1 and 2.
次に、上記構成の動作について説明する。原料(被処理物)はホッパ6、搬送手段7及び投入ボックス8を介して回転キルン1に投入される。回転キルン1,2はモータ12,16により回転駆動され、回転キルン1内に導入された被処理物は攪拌・搬送羽根28により攪拌されながら排出側に搬送される。回転キルン1内は熱風ガスにより所定温度に加熱され、被処理物は間接加熱により乾燥(水分除去)されて乾燥物となり、接続ボックス9に排出される。接続ボックス9内においては乾燥物はガイド9aに案内され、回転キルン2の他端内に送入される。この回転キルン2内においても、乾燥物は攪拌・搬送羽根28により攪拌されながら搬送されるが、この間においても熱風炉5からの熱風ガスにより間接加熱され、乾燥物は熱分解処理(炭化処理)されて炭化物となり、この炭化物は回転キルン2の一端から回収ボックス18を介して回収される。   Next, the operation of the above configuration will be described. The raw material (object to be processed) is charged into the rotary kiln 1 through the hopper 6, the conveying means 7 and the charging box 8. The rotary kilns 1 and 2 are rotationally driven by the motors 12 and 16, and the workpieces introduced into the rotary kiln 1 are conveyed to the discharge side while being agitated by the agitating / conveying blades 28. The inside of the rotary kiln 1 is heated to a predetermined temperature by hot air gas, and the object to be processed is dried (moisture removed) by indirect heating to become a dried substance, which is discharged to the connection box 9. In the connection box 9, the dried material is guided by the guide 9 a and fed into the other end of the rotary kiln 2. Also in the rotary kiln 2, the dried product is conveyed while being agitated by the agitating / conveying blades 28. In the meantime, the dried product is also indirectly heated by the hot air gas from the hot air furnace 5, and the dried product is thermally decomposed (carbonized). As a result, the carbide is recovered, and the carbide is recovered from one end of the rotary kiln 2 through the recovery box 18.
回転キルン1,2内で発生した熱分解ガスは接続ボックス9から配管24を介してガス燃焼炉23に導入され、燃焼浄化される。ガス燃焼炉23は自身の燃焼バーナにより加熱されるとともに、外部加熱手段3から排出される熱風ガスの一部を配管20を介して送入され、約850℃に加熱される。ガス燃焼炉23からの燃焼排ガスは温度調整空気を導入された後、熱交換機25において外部空気と熱交換されて200〜150℃に冷却される。熱交換により加熱された外部空気は熱風炉5に導入される。一方、冷却された燃焼排ガスはバグフィルタ及び排気ブロアを介して煙突から排出される。   Pyrolysis gas generated in the rotary kilns 1 and 2 is introduced into the gas combustion furnace 23 from the connection box 9 through the pipe 24 and is purified by combustion. The gas combustion furnace 23 is heated by its own combustion burner, and part of the hot air gas discharged from the external heating means 3 is fed through the pipe 20 and heated to about 850 ° C. The combustion exhaust gas from the gas combustion furnace 23 is introduced with temperature-adjusted air, and then heat-exchanged with external air in the heat exchanger 25 and cooled to 200 to 150 ° C. External air heated by heat exchange is introduced into the hot stove 5. On the other hand, the cooled combustion exhaust gas is discharged from the chimney through the bag filter and the exhaust blower.
上記した実施最良形態においては、攪拌・搬送羽根28を回転キルン1,2の内壁に着脱自在に設けており、事前のサンプル試験の結果により攪拌・搬送羽根28を形成するが、実負荷での適合が不十分なことが判明すると、攪拌・搬送羽根28の一部又は前部を変更する必要がある。しかし、攪拌・搬送羽根28は着脱自在であるので、その変更は容易である。又、攪拌・搬送羽根28の羽根部28bの高さ、長さ、傾斜角度が異なる各種の攪拌・搬送羽根28を予め形成しておき、その中から最も実負荷に適合した攪拌・搬送羽根28を選択することにより、攪拌・搬送対象の原料の性状に応じて最適な条件の攪拌・搬送羽根28とすることができ、原料の攪拌・搬送を加熱効率も含めて効率的に行うことができ、これによって原料に最適な熱分解を効果的に行うことができる。従って、加熱源燃料の削減、運転時間の短縮等施設の運転コストの削減が図れる。   In the above-described best embodiment, the stirring / conveying blades 28 are detachably provided on the inner walls of the rotary kilns 1 and 2, and the stirring / conveying blades 28 are formed according to the results of a prior sample test. If it is found that the fit is insufficient, it is necessary to change a part or the front part of the stirring / conveying blade 28. However, since the stirring / conveying blade 28 is detachable, its change is easy. Further, various agitating / conveying blades 28 having different heights, lengths, and inclination angles of the blade portions 28b of the agitating / conveying blades 28 are formed in advance, and among them, the agitating / conveying blade 28 most suitable for the actual load is formed. By selecting this, it is possible to obtain the stirring / conveying blade 28 under the optimum conditions according to the properties of the raw material to be agitated / conveyed, and to stir / convey the raw material efficiently including heating efficiency. As a result, the optimum thermal decomposition of the raw material can be performed effectively. Therefore, it is possible to reduce the operating cost of the facility, such as reducing the heat source fuel and the operating time.
図3(a),(b)は攪拌・搬送羽根28の支持部28aを分割した場合と一体にした場合を示し、何れの場合も支持部28aは回転キルン1,2の略全長に渡って設けられている。又、羽根部28bには図1(d)に示すように傾斜角θを設けたが、この傾斜角θはゼロ度以上であればよい。さらに、羽根部28bは回転キルン1,2の軸心方向に向芯状態に設けたが、偏芯状態に設けてもよい。又、攪拌・搬送羽根28形状を平板状としたが、湾曲板状や屈曲板状としてもよい。   3 (a) and 3 (b) show a case where the support portion 28a of the stirring / conveying blade 28 is divided and integrated, and in any case, the support portion 28a extends over the substantially entire length of the rotary kilns 1,2. Is provided. Further, as shown in FIG. 1 (d), the blade portion 28b is provided with an inclination angle θ. However, the inclination angle θ may be zero degrees or more. Furthermore, although the blade | wing part 28b was provided in the eccentric state in the axial center direction of the rotary kilns 1, 2, you may provide in an eccentric state. Moreover, although the shape of the stirring / conveying blade 28 is a flat plate shape, it may be a curved plate shape or a bent plate shape.
この発明の実施最良形態による回転キルン装置の側面図、攪拌・搬送羽根の正面図、側面図及び平面図である。It is the side view of the rotary kiln apparatus by this Embodiment, and the front view, side view, and top view of a stirring / conveyance blade | wing. 実施最良形態による熱分解施設の構成図である。It is a block diagram of the thermal decomposition facility by embodiment best. 実施最良形態による分割構造及び一体構造の場合の攪拌・搬送羽根の正面図である。It is a front view of the stirring and conveyance blade | wing in the case of the division | segmentation structure and integral structure by the best embodiment.
符号の説明Explanation of symbols
1,2…回転キルン
3,4…外部加熱手段
8…投入ボックス
9…接続ボックス
10,11,14,15…回転支持ローラ
18…回収ボックス
27…蟻溝形成部
27a…蟻溝
28…攪拌・搬送羽根
28a…支持部
28b…羽根部
28c…分割部
DESCRIPTION OF SYMBOLS 1, 2 ... Rotary kiln 3, 4 ... External heating means 8 ... Input box 9 ... Connection box 10, 11, 14, 15 ... Rotation support roller 18 ... Collection box 27 ... Dovetail groove formation part 27a ... Dovetail groove 28 ... Stirring / Conveying blade 28a ... support portion 28b ... blade portion 28c ... dividing portion

Claims (7)

  1. 回転自在で筒状の回転キルン内の周方向及び軸方向に複数の攪拌・搬送羽根を備えた回転キルン装置において、攪拌・搬送羽根を着脱自在としたことを特徴とする回転キルン装置。   A rotary kiln apparatus comprising a plurality of agitating / conveying blades in a circumferential direction and an axial direction in a rotatable and cylindrical rotating kiln, wherein the agitating / conveying blades are detachable.
  2. 回転自在で筒状の回転キルン内の周方向及び軸方向に複数の攪拌・搬送羽根を設けるとともに、回転キルンの両端部に原料の導入手段と排出手段を設け、回転キルンの内部に原料を収納して間接加熱により原料を熱分解する熱分解手段を備えた熱分解施設において、上記攪拌・搬送羽根を着脱自在としたことを特徴とする熱分解施設。   A plurality of agitating and conveying blades are provided in the circumferential direction and the axial direction in a rotatable, cylindrical rotary kiln, and raw material introduction means and discharge means are provided at both ends of the rotary kiln, and raw materials are stored inside the rotary kiln. A thermal decomposition facility comprising a thermal decomposition means for thermally decomposing the raw material by indirect heating, wherein the stirring / conveying blade is detachable.
  3. 上記攪拌・搬送羽根は、回転キルンの内壁に形成した蟻溝に挿着したことを特徴とする請求項2記載の熱分解施設。   The thermal decomposition facility according to claim 2, wherein the agitating / conveying blades are inserted into dovetail grooves formed on the inner wall of the rotary kiln.
  4. 上記攪拌・搬送羽根は、複数に分割して回転キルンの略全長に渡って設けたことを特徴とする請求項2又は3記載の熱分解施設。   The thermal decomposition facility according to claim 2 or 3, wherein the stirring / conveying blade is divided into a plurality of parts and provided over substantially the entire length of the rotary kiln.
  5. 上記攪拌・搬送羽根は、一体に構成して回転キルンの略全長に渡って設けたことを特徴とする請求項2又は3記載の熱分解施設。   The thermal decomposition facility according to claim 2 or 3, wherein the agitation / conveying blade is integrally formed and provided over substantially the entire length of the rotary kiln.
  6. 上記攪拌・搬送羽根は、回転キルンの軸心方向に対してゼロ度以上の傾斜角を備えたことを特徴とする請求項2〜5の何れかに記載の熱分解施設。   The thermal decomposition facility according to any one of claims 2 to 5, wherein the stirring / conveying blade has an inclination angle of zero degrees or more with respect to an axial direction of the rotary kiln.
  7. 上記攪拌・搬送羽根は、回転キルンの軸心方向に対して向芯又は偏芯していることを特徴とする請求項2〜6の何れかに記載の熱分解施設。   The pyrolysis facility according to any one of claims 2 to 6, wherein the agitating / conveying blade is oriented or eccentric with respect to the axial center direction of the rotary kiln.
JP2004079506A 2004-03-19 2004-03-19 Rotary kiln device and pyrolyzing facility Pending JP2005265323A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309622A (en) * 2006-05-22 2007-11-29 Nippon Steel Corp Waste treatment device using external heating type rotary kiln
CN103743227A (en) * 2014-01-17 2014-04-23 中国大唐集团科学技术研究院有限公司 Industrial rotary kiln

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007309622A (en) * 2006-05-22 2007-11-29 Nippon Steel Corp Waste treatment device using external heating type rotary kiln
CN103743227A (en) * 2014-01-17 2014-04-23 中国大唐集团科学技术研究院有限公司 Industrial rotary kiln

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