JPH11286684A - Continuous carbonization furnace - Google Patents

Continuous carbonization furnace

Info

Publication number
JPH11286684A
JPH11286684A JP10108479A JP10847998A JPH11286684A JP H11286684 A JPH11286684 A JP H11286684A JP 10108479 A JP10108479 A JP 10108479A JP 10847998 A JP10847998 A JP 10847998A JP H11286684 A JPH11286684 A JP H11286684A
Authority
JP
Japan
Prior art keywords
zone
furnace
retort
carbonization
drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10108479A
Other languages
Japanese (ja)
Inventor
Satoru Nagai
了 永井
Original Assignee
Takasago Ind Co Ltd
高砂工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takasago Ind Co Ltd, 高砂工業株式会社 filed Critical Takasago Ind Co Ltd
Priority to JP10108479A priority Critical patent/JPH11286684A/en
Publication of JPH11286684A publication Critical patent/JPH11286684A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a furnace for conducting continuous carbonization treatment of high water content organic wastes such as ciehydrated sludge of sewage water, human wastes or the like, pulp sludge and food sludge at a low cost. SOLUTION: A continuous carbonization furnace comprises a metallic retort 8 provided almost horizontally through a furnace body 1 and is rotationally driven; retort 8 having partition walls 12 which divide retort 8 into a drying zone 15, a dry distillation carbonization zone 16 and an activation zone 17 in the direction of the outlet from the inlet of furnace body 1 and allow substances to be treated to flow within retort 8 but shut off a gas flow; dry distillation carbonization zone 16 and activation zone 17 of retort 8 having exhaust pipes 19 for releasing a gas within retort 8 into furnace body 1; burners 26 provided at the positions corresponding to dry distillation carbonization zone 16 and activation zone 17 in furnace body 1 to heat drying zone 15 with the combustion gas flowing in from the positions corresponding to dry distillation carbonization zone 16 and activation zone 17 from the outside of retort 8; and a pipe for supplying the gas generated within drying zone 15 to activation zone 17.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、下水道、し尿など
の脱水汚泥、パルプスラッジ、食品汚泥などの高水分有
機質廃棄物を低コストで連続的に炭化処理する炉に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace for continuously carbonizing high-moisture organic waste such as dewatered sludge such as sewage and human waste, pulp sludge and food sludge at low cost.
【0002】[0002]
【従来の技術】高水分有機質廃棄物を乾留炭化するには
前処理として乾燥が必要であり、まず、内部に羽根を設
けたドラムの中に被処理物を投入して回転することによ
り撹拌しつつ、別に設けた炭化炉の排ガスにより熱交換
し、さらに、バーナーで昇温した空気を打ち込んで乾燥
していたが、乾燥により発生する排ガスには臭気がある
ため、別に設けた脱臭炉で800℃以上に加熱して大気
中に放出していた。
2. Description of the Related Art Dry carbonization of high-moisture organic waste requires drying as a pretreatment. First, an object to be treated is put into a drum provided with blades therein and stirred by rotating. In addition, heat was exchanged with the exhaust gas from a carbonization furnace provided separately, and the air heated by a burner was blown in to dry. However, since the exhaust gas generated by drying had an odor, 800 Heated above ℃ and released into the atmosphere.
【0003】[0003]
【発明が解決しようとする課題】このように、乾燥炉が
炭化炉と別に設けられている装置においては、炭化炉の
排ガスを乾燥用の熱源として用いる場合に、排ガスの移
送中における放熱により熱損失が大きく、また、脱臭炉
内で排ガスを加熱するのに多量の燃料を必要とするため
ランニングコストが高いという課題がある。
As described above, in an apparatus in which the drying furnace is provided separately from the carbonization furnace, when the exhaust gas from the carbonization furnace is used as a heat source for drying, the heat is released by the heat release during the transfer of the exhaust gas. There is a problem that the loss is large and the running cost is high because a large amount of fuel is required to heat the exhaust gas in the deodorizing furnace.
【0004】[0004]
【課題を解決するための手段、作用及び効果】このよう
な課題を解決するための手段として、請求項1の発明
は、炉体をほぼ水平に貫通して回転駆動される金属製の
レトルト内を被処理物の流通を許してガスの流通を遮断
する仕切壁により入口から出口に向かって乾燥ゾーン、
乾留炭化ゾーン及び賦活ゾーンに区切り、そのレトルト
の乾留炭化ゾーン及び賦活ゾーンにそのレトルト内のガ
スを炉体内に放出する排気管を設け、炉体の乾留炭化ゾ
ーン及び賦活ゾーンに対応する位置にバーナーを設け、
乾燥ゾーンを炉体の乾留炭化ゾーン及び賦活ゾーンに対
応する位置から流入する燃焼ガスによってレトルトの外
から加熱するようになっているとともに、乾燥ゾーン内
で発生するガスを賦活ゾーンに供給するパイプを設けた
ものである。
Means for Solving the Problems, Functions and Effects As means for solving such problems, the invention according to claim 1 is directed to a metal retort which is driven to rotate substantially through a furnace body substantially horizontally. A drying zone from the inlet to the outlet by a partition wall that allows the flow of the workpiece and blocks the flow of gas,
The retort is divided into a carbonization zone and an activation zone, and an exhaust pipe for releasing gas in the retort into the furnace is provided in the carbonization zone and the activation zone of the retort, and a burner is provided at a position corresponding to the carbonization zone and the activation zone of the furnace body. Is established,
The drying zone is heated from the outside of the retort by a combustion gas flowing from a position corresponding to the dry distillation carbonization zone and the activation zone of the furnace body, and a pipe for supplying gas generated in the drying zone to the activation zone is provided. It is provided.
【0005】本明細書において、乾燥とは被処理物の付
着水または被処理物の気孔に入っている水を加熱と風に
よって除去することであり、乾留炭化とは有機質の被処
理物を還元雰囲気で加熱することにより熱分解して揮発
分(乾留ガス)を揮発させ、炭素と灰分を残すことであ
り、賦活とは乾留炭化により炭素と灰分となった多孔質
固体の細孔内に残ったタール分を水蒸気により排出して
気孔をさらに多くすることであり少量の乾留ガスが発生
する。
[0005] In the present specification, drying refers to removing water adhering to an object to be treated or water contained in pores of the object to be treated by heating and air. Dry carbonization refers to reduction of an organic object to be treated. Heating in an atmosphere to thermally decompose and volatilize volatiles (carbonized gas) to leave carbon and ash, and activation is to remain in the pores of the porous solid that has been carbonized and ashed by dry carbonization. The tar content is discharged by steam to increase the number of pores, and a small amount of dry distillation gas is generated.
【0006】上記請求項1の発明は、金属製のレトルト
内を被処理物の流通を許してガスの流通を遮断する仕切
壁により入口から出口に向かって乾燥ゾーン、乾留炭化
ゾーン及び賦活ゾーンに区切ったから、各ゾーンはそれ
ぞれ独立した雰囲気を維持しながら被処理物が順次に隣
のゾーンへ移動しつつ処理が行われるのであって、乾留
炭化ゾーンから炉内へ放出される乾留ガスはバーナーに
より着火されて燃焼し、バーナーの燃焼炎とともにレト
ルトの乾留炭化ゾーン及び賦活ゾーンを直接加熱した後
乾燥ゾーンを加熱して高水分の被処理物を加熱し、水蒸
気と臭気が発生する。
According to the first aspect of the present invention, a drying zone, a carbonization zone and an activation zone are formed from an inlet to an outlet by a partition wall which permits the flow of an object to be processed and blocks the flow of gas in a metal retort. Since the zones are separated, each zone is processed while the objects to be processed are sequentially moved to the next zone while maintaining an independent atmosphere, and the carbonization gas released from the carbonization zone into the furnace is burned by a burner. It is ignited and burns, and directly heats the dry distillation carbonization zone and the activation zone of the retort together with the combustion flame of the burner, and then heats the drying zone to heat the high-moisture workpiece, generating steam and odor.
【0007】このとき、乾燥ゾーンの内圧は高まるが、
賦活ゾーンにおいては燃焼した乾留ガスが炉体内へ放出
されるため大気圧より少し低い。
At this time, the internal pressure of the drying zone increases,
In the activation zone, the burned carbonized gas is released into the furnace, and thus slightly lower than the atmospheric pressure.
【0008】このため、乾燥ゾーンで発生した水蒸気と
臭気はパイプを通って賦活ゾーンへ流入し、被処理物が
賦活されてレトルトから排出される。
For this reason, the water vapor and the odor generated in the drying zone flow into the activation zone through the pipe, and the material to be processed is activated and discharged from the retort.
【0009】上記パイプは乾留炭化ゾーンを加熱する熱
によって加熱されて中を流れる気体中の臭気は熱により
分解し脱臭されため、脱臭用の熱量は特に必要としな
い。
The pipe is heated by the heat for heating the dry distillation carbonization zone, and the odor in the gas flowing therethrough is decomposed and deodorized by the heat, so that the calorific value for deodorization is not particularly required.
【0010】したがって、効率よく炭化することができ
る効果がある。
Therefore, there is an effect that carbonization can be performed efficiently.
【0011】請求項2の発明は、乾燥ゾーンと賦活ゾー
ンを結ぶパイプが乾留炭化ゾーンを貫通して設けられて
いるからレトルトが嵩ばらない効果があり、請求項3の
発明はパイプが乾留炭化ゾーンを迂回して設けられてい
るから燃焼ガスにより直接加熱されて脱臭効果が高い。
The invention of claim 2 has the effect that the pipes connecting the drying zone and the activation zone are provided through the carbonized carbonization zone so that the retort does not increase in bulk. Since it is provided bypassing the zone, it is directly heated by the combustion gas and has a high deodorizing effect.
【0012】請求項4の発明は、請求項1、2または3
の発明において、乾燥ゾーンが燃焼ガスをその乾燥ゾー
ン内に打ち込むことによって加熱されるようになってい
るから、乾燥が促進される効果がある。
[0012] The invention of claim 4 is the invention of claim 1, 2, or 3.
According to the invention, since the drying zone is heated by driving the combustion gas into the drying zone, there is an effect that drying is promoted.
【0013】[0013]
【発明の実施の形態】以下、本発明の炭化炉の実施の形
態を添付図に基づいて説明する。図1において、1は耐
火物製の炉体であって、隔壁6によって左右に分けられ
ていて、その右側の部分は吸引孔3の形成された炉床2
によって上側の一次燃焼室4と下側の二次燃焼室5に分
けられ、一次燃焼室4と炉体1の左側の部分には炉体1
の両側壁と隔壁6をわずかな間隙をもって貫通する耐熱
金属製のレトルト8がほぼ水平に架設され、炉体1の両
外側においてレトルト8の外周に固定されたリング9が
スタンド10に回転自由に支持されたローラー11によ
り支承されて一方向に回転駆動されるようになってい
る。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a carbonization furnace according to the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a furnace body made of a refractory, which is divided into right and left by a partition wall 6, and a right side thereof has a hearth 2 in which a suction hole 3 is formed.
Is divided into an upper primary combustion chamber 4 and a lower secondary combustion chamber 5.
A retort 8 made of a heat-resistant metal penetrating through both side walls and the partition wall 6 with a small gap is provided substantially horizontally, and a ring 9 fixed to the outer periphery of the retort 8 on both outer sides of the furnace body 1 is freely rotatable on a stand 10. It is supported by a supported roller 11 and is driven to rotate in one direction.
【0014】レトルト8内は、図2に示すように、仕切
板14の両側をレトルト8の内周面に沿う螺旋管13に
より連通した仕切壁12によって、入口側から出口側に
向かって、乾燥ゾーン15、乾留炭化ゾーン16及び賦
活ゾーン17に区画されていて、乾留炭化ゾーン16の
両側の仕切壁12の仕切板14の中心を貫いて乾燥ゾー
ン15と賦活ゾーン17とを連通するパイプ18が設け
られているとともに乾留炭化ゾーン16と賦活ゾーン1
7にはレトルト8内のガスを一次燃焼室4内に放出する
排気管19が設けられ、乾燥ゾーン15には炉体1に固
設された閉塞板20を貫いてホッパー22に接続された
スクリューコンベア21、撹拌羽根23及び熱風打ち込
みパイプ24が差し込まれ、乾燥ゾーン15のレトルト
8の外周には案内羽根25が螺旋状に取り付けられてい
る。
As shown in FIG. 2, the inside of the retort 8 is dried from the inlet side to the outlet side by a partition wall 12 communicating both sides of the partition plate 14 with a spiral tube 13 along the inner peripheral surface of the retort 8. A pipe 18, which is divided into a zone 15, a carbonization zone 16, and an activation zone 17, passes through the center of the partition plate 14 of the partition wall 12 on both sides of the carbonization zone 16 and communicates the drying zone 15 and the activation zone 17. Provided and carbonized carbonization zone 16 and activation zone 1
7 is provided with an exhaust pipe 19 for discharging gas in the retort 8 into the primary combustion chamber 4, and a screw connected to a hopper 22 through a closing plate 20 fixed to the furnace 1 in the drying zone 15. A conveyor 21, a stirring blade 23 and a hot air driving pipe 24 are inserted, and a guide blade 25 is spirally mounted on the outer periphery of the retort 8 in the drying zone 15.
【0015】また、炉体1の一次燃焼室4には5個のバ
ーナー26が、二次燃焼室5には1個のバーナー27が
設けられ、隔壁6の下部には二次燃焼室5のガスをファ
ン28の吸引によりレトルト8の乾燥ゾーン15の外周
を通って大気に放出する通気孔7が形成されている。
Further, five burners 26 are provided in the primary combustion chamber 4 of the furnace body 1 and one burner 27 is provided in the secondary combustion chamber 5. A ventilation hole 7 for discharging gas to the atmosphere through the outer periphery of the drying zone 15 of the retort 8 by suction of the fan 28 is formed.
【0016】なお、吸引ファン28の排出ガスの一部は
熱風打ち込みパイプ24を通ってレトルト8の乾燥ゾー
ン15内に打ち込まれるようになっている。
A part of the exhaust gas from the suction fan 28 is driven into the drying zone 15 of the retort 8 through the hot air driving pipe 24.
【0017】次に、本実施の形態の炭化炉を用いて高水
分有機質廃棄物を炭化する場合の作用について説明す
る。
Next, the operation when carbonizing high moisture organic waste using the carbonization furnace of the present embodiment will be described.
【0018】一次燃焼室4のバーナー26と二次燃焼室
5のバーナー27を燃焼させて炉体内を適温に保った状
態でホッパー22に被処理物を投入するとスクリューコ
ンベア21によりレトルト8の乾燥ゾーン15に供給さ
れ、撹拌羽根23により撹拌されつつレトルト8の外周
を通る高温ガス及び熱風打ち込みパイプ24から打ち込
まれる熱風により乾燥粉砕されながら移送され、レトル
ト8の回転により乾留炭化ゾーン16との間に設けられ
た仕切壁12の螺旋管13を通って乾留炭化ゾーン16
へ入るが、螺旋管13内は粒状になった被処理物によっ
て埋められているため、水蒸気や臭気は乾留炭化ゾーン
16へ入ることができず、後述するように、大気圧より
少し気圧の低い賦活ゾーン17へパイプ18を通って流
れ、高温度の乾留炭化ゾーン16内を通過する際に加熱
されて水蒸気は更に高温度となり、臭気は熱分解して消
滅する。
When the burner 26 of the primary combustion chamber 4 and the burner 27 of the secondary combustion chamber 5 are burned and an object to be processed is charged into the hopper 22 while keeping the furnace interior at an appropriate temperature, the screw conveyor 21 drives the drying zone of the retort 8. 15 and is transferred while being dried and pulverized by the high-temperature gas passing through the outer periphery of the retort 8 and the hot air injected from the hot-air driving pipe 24 while being stirred by the stirring blades 23, and rotated between the retort 8 and the carbonized carbonization zone 16. The carbonization zone 16 through the spiral pipe 13 of the partition wall 12 provided
However, since the inside of the helical tube 13 is filled with the granular material to be treated, water vapor and odor cannot enter the dry distillation carbonization zone 16, and as described later, the pressure is slightly lower than the atmospheric pressure. It flows through the pipe 18 to the activation zone 17 and is heated as it passes through the high-temperature dry distillation carbonization zone 16, the steam becomes higher in temperature, and the odor is thermally decomposed and disappears.
【0019】乾留炭化ゾーン16は両側の仕切壁12に
よって仕切られているため、乾燥した被処理物はバーナ
ー26の燃焼炎により高温度に加熱されて有機物の一部
が燃焼することにより還元雰囲気となって大部分の有機
物は分解して乾留ガスとなり、排気管19から一次燃焼
室4内に流入して燃焼し、一次燃焼室4内の温度が上昇
するため一次燃焼室4のバーナー26を順次に消して最
後には全部消すこともできる。
Since the dry distillation carbonization zone 16 is partitioned by the partition walls 12 on both sides, the dried object to be treated is heated to a high temperature by the combustion flame of the burner 26 and a part of the organic matter is burned to reduce the reducing atmosphere. Most of the organic matter is decomposed into carbonization gas, and flows into the primary combustion chamber 4 through the exhaust pipe 19 and burns. Since the temperature inside the primary combustion chamber 4 rises, the burners 26 of the primary combustion chamber 4 are sequentially turned on. You can also erase them all and finally erase them all.
【0020】ファン28の吸引により負圧となった二次
燃焼室5に炉床2の吸引孔3を通って流入した排気ガス
はバーナー27により再加熱されて未燃炭素及び臭気は
焼却されるが、ダイオキシン等の有害物質が分解されな
い場合には、一次燃焼室4のバーナー26を幾つか燃焼
させて温度を上昇させてもよい。
Exhaust gas flowing into the secondary combustion chamber 5 which has become negative pressure by the suction of the fan 28 through the suction hole 3 of the hearth 2 is reheated by the burner 27 and unburned carbon and odor are incinerated. However, when harmful substances such as dioxin are not decomposed, some of the burners 26 of the primary combustion chamber 4 may be burned to increase the temperature.
【0021】このようにして、無害化された排気ガスは
レトルト8の乾燥ゾーン15の外周の案内羽根25によ
り旋回しつつファン28から大気中に放出されるのであ
るが、その間に熱交換により乾燥ゾーン15を十分に加
熱する。
The exhaust gas thus detoxified is discharged from the fan 28 into the atmosphere while being swirled by the guide vanes 25 on the outer periphery of the drying zone 15 of the retort 8, during which the heat is exchanged to dry. Heat zone 15 sufficiently.
【0022】乾留炭化ゾーン16で炭化された粒状の被
処理物は仕切壁12の螺旋管13を通って賦活ゾーン1
7に移され、パイプ18を通って乾燥ゾーン15から供
給される高温度の水蒸気と混合されつつ一次燃焼室4に
より加熱され、気孔中に残ったタールが除去されて多孔
質となり、出口側の仕切壁12の螺旋管13から排出さ
れ、賦活ゾーン17で発生したガスは排気管19を通っ
て一次燃焼室4内で燃焼される。
The granular workpiece carbonized in the dry distillation carbonization zone 16 passes through the spiral tube 13 of the partition wall 12 and is activated in the activation zone 1.
7 and heated by the primary combustion chamber 4 while being mixed with the high-temperature steam supplied from the drying zone 15 through the pipe 18, the tar remaining in the pores is removed, and the pores are made porous. The gas discharged from the spiral pipe 13 of the partition wall 12 and generated in the activation zone 17 is burned in the primary combustion chamber 4 through the exhaust pipe 19.
【0023】多孔質となった炭化物は土壌改良剤などと
して有効に利用される。
The porous carbide is effectively used as a soil conditioner or the like.
【0024】本発明の他の実施の形態として、図3に示
すように、パイプ18をレトルト8の外側に配置して乾
留炭化ゾーン16を迂回させるようにしてもよい。
As another embodiment of the present invention, as shown in FIG. 3, a pipe 18 may be arranged outside the retort 8 to bypass the dry distillation carbonization zone 16.
【0025】実施例 含水率が80%の下水汚泥を乾燥ゾーン15の長さが3
m、乾留炭化ゾーン16、賦活ゾーン17の長さがそれ
ぞれ1.5m、内径が0.3mのレトルト8を架設した
図1の炭化炉を用いて毎時105kgをホッパー22より
スクリューコンベア21で定量供給し、投入より排出ま
で60分にて炭化物を得た。先ず全バーナーに点火して
炉の一次燃焼室4を750℃に昇温してから投入を開始
した。乾燥ゾーン15の内部温度は520℃であったが
汚泥の投入により順次温度は低下し480℃〜470℃
まで降下したが汚泥が乾燥ゾーン15を過ぎて乾留炭化
ゾーン16へ入るとレトルト8に設けられている排気管
19より乾留ガスが噴出して着火し温度も上昇してき
た。従って、第1のバーナー26(レトルト8の入口側
から1番目)を残して入口側から第2、第3のバーナー
26と順次消し、最後には二次燃焼室5のバーナー27
と一次燃焼室4の第5のバーナー26(レトルト8の最
も出口寄り)を残して他は消火した。この時二次燃焼室
5の温度も680℃まで昇温し乾燥ゾーン15の温度も
520℃〜530℃と上昇した。この時点で操炉は手動
より自動制御に切り替え、乾留炭化ゾーン16を750
℃、賦活ゾーン17を850℃、二次燃焼室5を850
℃に温度設定したところ安定した炭化を持続することが
できた。二次燃焼室5はバーナー26によって850℃
に保たれ未燃焼炭素は焼却され高温度なガスは二次燃焼
室5から通気孔7を通って乾燥ゾーン15の周りへ入り
乾燥エネルギーとして働き一部は乾燥ゾーン15内に打
込まれ乾燥熱風として直接汚泥に接触して水分の蒸発促
進をはかった。残りの温風は煙突より大気中に放出し
た。排ガスは臭い煤塵もなく無害な排ガスであった。
EXAMPLE A sewage sludge having a water content of 80% was prepared by drying the sewage sludge having a length of 3
1, the carbonization zone 16 and the activation zone 17 each have a length of 1.5 m and a retort 8 having an inner diameter of 0.3 m. Then, carbide was obtained in 60 minutes from charging to discharging. First, all the burners were ignited, the temperature of the primary combustion chamber 4 of the furnace was raised to 750 ° C., and then charging was started. Although the internal temperature of the drying zone 15 was 520 ° C., the temperature gradually decreased due to the introduction of sludge, and the temperature gradually decreased from 480 ° C. to 470 ° C.
However, when the sludge passed through the drying zone 15 and entered the carbonization zone 16, the carbonization gas was ejected from the exhaust pipe 19 provided in the retort 8, ignited, and the temperature increased. Accordingly, the second and third burners 26 are sequentially turned off from the inlet side except for the first burner 26 (first from the inlet side of the retort 8), and finally the burner 27 of the secondary combustion chamber 5 is turned off.
The fire was extinguished except for the fifth burner 26 of the primary combustion chamber 4 (closest to the exit of the retort 8). At this time, the temperature of the secondary combustion chamber 5 also increased to 680 ° C., and the temperature of the drying zone 15 also increased to 520 ° C. to 530 ° C. At this time, the furnace was switched from manual to automatic control, and the dry distillation carbonization zone 16 was set to 750.
° C, the activation zone 17 is 850 ° C, and the secondary combustion chamber 5 is 850 ° C.
When the temperature was set to ℃, stable carbonization could be maintained. The secondary combustion chamber 5 is heated to 850 ° C. by the burner 26.
The unburned carbon is incinerated, and the high-temperature gas flows from the secondary combustion chamber 5 through the ventilation holes 7 to around the drying zone 15 and acts as drying energy. As a direct contact with the sludge to promote the evaporation of water. The remaining warm air was released into the atmosphere from the chimney. The exhaust gas was a harmless exhaust gas without odor and dust.
【0026】この実験で使用した水分80%の生汚泥は
893kgで、できた炭化物は55.8kg、処理に要した
時間は510分であった。LPガス使用量は73.5kg
で生汚泥1kgあたりのガス使用量は0.0823kgであ
った。
The raw sludge with a water content of 80% used in this experiment was 893 kg, the produced carbon was 55.8 kg, and the time required for the treatment was 510 minutes. LP gas consumption is 73.5kg
The amount of gas used per kg of raw sludge was 0.0823 kg.
【0027】できた炭化物は5.00mm以下の硬い粒状
炭で嵩比重は0.53であった。炭の比表面積は145
m2/gで活性炭の約1/10であった。
The resulting carbide was a hard granular coal having a size of 5.00 mm or less and a bulk specific gravity of 0.53. The specific surface area of charcoal is 145
It was about 1/10 of activated carbon at m 2 / g.
【0028】比較例 炉体内を貫通するレトルトが内径0.3m、長さ3mの
加熱帯の連続炭化炉であって乾燥ゾーンはなく乾留炭化
ゾーンと賦活ゾーンとはレトルト内に設けられている螺
旋壁で仕切られた二室よりなるレトルトを炉枠内に架設
し、バーナーと自燃する乾留ガスで加熱しながら回転さ
せ、乾留炭化、賦活するものである。当然入口・出口は
空気の侵入は遮断する構造であり、実施例1と同様発生
する乾留ガスはレトルト内より外に通ずる排気管より噴
出し自燃させるものである賦活ゾーンは炉の出口側より
賦活ゾーンに通ずる細いパイプで水を注入しパイプ内で
水蒸気化して賦活を行った。
Comparative Example A retort penetrating through the inside of the furnace is a continuous carbonization furnace having a heating zone having an inner diameter of 0.3 m and a length of 3 m. There is no drying zone, and the dry distillation carbonization zone and the activation zone are spirals provided in the retort. A retort consisting of two chambers separated by a wall is installed in a furnace frame, and rotated while heating with a burner and a self-burning dry distillation gas to dry carbonize and activate. Naturally, the inlet and outlet are designed to block the intrusion of air, and the carbonized gas generated as in Example 1 is injected from the exhaust pipe that passes outside of the retort and self-burns. The activation zone is activated from the outlet side of the furnace. Water was injected through a thin pipe leading to the zone, and the water was turned into steam in the pipe for activation.
【0029】乾燥は炭化炉の二次燃焼室より排出される
650℃の高温ガスをダクトで乾燥用熱風発生機へ導き
更にバーナーで加熱し風量を増して700℃の熱風を乾
燥炉へ打込んで乾燥を行った。乾燥炉は内径0.5m、
長さ2m、管内に解砕用回転羽根とリフターが取り付け
てあり、熱風を打込みながら含水率80%の汚泥を羽根
で解砕しリフターで上部へ持ち上げ、落下させながら熱
風と接触して乾燥する仕組みである。乾燥排ガスは水蒸
気主体の臭気のある気体であり乾燥炉よりファンで吸引
しバーナーで850℃に加熱された脱臭炉を通して焼却
脱臭し大気中に放出した。乾燥炉へは80%水分汚泥を
毎時90kg入れ、乾燥後の水分は42.4%となった。
水分42.4%の乾燥汚泥を毎時60kgを前記乾留炭化
炉へ連続自動投入し乾留ゾーン750℃、賦活ゾーン8
00℃を30分で通過させて炭化物を得た。このとき賦
活ゾーンへの水の注入は毎時6lであった。今回の実験
では一次燃焼室は5つのバーナーのうち第1バーナーと
第5バーナーを燃焼させ、二次燃焼室は800℃の温度
を維持した。含水率80%の生汚泥544.2kgを毎時
90.7kg、乾燥炉へ供給し含水率42.4%の乾燥汚
泥188.8kgを得た。この乾燥汚泥を毎時36.5kg
炭化炉へ連続供給して34kgの炭化物を作ることができ
た。できた炭化物の嵩比重は0.58、直径5mm以下で
真黒い硬い粒状炭化物であった。炭の比表面積は135
m2/gであり活性炭には及ばないが植物の育成には十分
使用できる。この炭化に用いたLPガスは71.8kgで
あり、この内乾燥機に43%、脱臭炉に39.1%、炭
化炉に17.9%であった。生汚泥1kgに要した燃料は
0.132kgとなった。
For drying, high-temperature gas of 650 ° C. discharged from the secondary combustion chamber of the carbonization furnace is guided to a hot air generator for drying by a duct, and further heated by a burner to increase the air volume and blow hot air of 700 ° C. into the drying furnace. For drying. The drying oven has an inner diameter of 0.5m,
Rotating blades and a lifter for crushing are installed in the pipe 2m in length. Sludge with a water content of 80% is broken down by the blades while hot air is blown in, lifted up by a lifter, and dried by contact with hot air while falling. It is a mechanism. The drying exhaust gas is an odorous gas mainly composed of water vapor, is sucked by a fan from a drying furnace, incinerated and deodorized through a deodorizing furnace heated to 850 ° C. by a burner, and released into the atmosphere. 90 kg of 80% moisture sludge was put into the drying furnace at an hour, and the moisture content after drying was 42.4%.
60 kg / h of dry sludge having a water content of 42.4% is continuously and automatically charged into the carbonization furnace, and the carbonization zone is 750 ° C. and the activation zone 8 is
After passing through 00 ° C. for 30 minutes, a carbide was obtained. At this time, the injection of water into the activation zone was 6 l / h. In this experiment, the primary combustion chamber burned the first and fifth burners out of the five burners, and the secondary combustion chamber maintained a temperature of 800 ° C. 544.2 kg of raw sludge having a water content of 80% was supplied to a drying furnace at 90.7 kg per hour to obtain 188.8 kg of dry sludge having a water content of 42.4%. 36.5 kg of this dried sludge per hour
34 kg of carbides could be produced by continuous feeding to the carbonization furnace. The resulting carbide had a bulk specific gravity of 0.58, a diameter of 5 mm or less, and was hard black granular carbide. The specific surface area of charcoal is 135
Although it is m 2 / g, which is lower than activated carbon, it can be used sufficiently for growing plants. The LP gas used for this carbonization was 71.8 kg, of which 43% was in the dryer, 39.1% in the deodorization furnace, and 17.9% in the carbonization furnace. The fuel required for 1 kg of raw sludge was 0.132 kg.
【0030】含水率80%の生汚泥の炭化処理に要した
燃料(LPガス)は実施例では生汚泥1kgにLPガス
0.0823kg、1t処理に82.3kgであったが、比
較例では生汚泥1kgに0.132kg、1t当り132kg
消費した。これは明らかに乾燥・脱臭に使用した燃料に
よるものといえる。実施例の場合、二次燃焼室5の温度
も850℃を維持すると共に賦活ゾーン17の温度も8
50℃と比較例よりも高く設定したがこのように燃料使
用に差ができ、本発明がいかに高水分汚泥の炭化が低燃
費に大きく貢献しているか実証することができた。この
ように乾燥炉を炭化炉と一体化して脱臭炉を省くことに
より設備もコンパクトになり設備費の低減にもつながり
本発明のもたらす効果は多大である。
The fuel (LP gas) required for carbonization of raw sludge having a water content of 80% was 0.0823 kg of LP gas per kg of raw sludge and 82.3 kg of LP gas for 1 ton treatment in the example, but was not used in the comparative example. 0.132 kg per 1 kg of sludge, 132 kg per ton
Consumed. This is apparently due to the fuel used for drying and deodorizing. In the case of the embodiment, the temperature of the secondary combustion chamber 5 is also maintained at 850 ° C., and the temperature of the activation zone 17 is also 8 ° C.
Although the temperature was set to 50 ° C. higher than that of the comparative example, the difference in fuel use was thus obtained, and it was demonstrated that the present invention greatly contributes to low fuel consumption by carbonization of high moisture sludge. By thus integrating the drying furnace with the carbonizing furnace and omitting the deodorizing furnace, the equipment becomes compact and the equipment cost is reduced, and the effect of the present invention is great.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の一実施の形態の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図2】仕切壁の拡大断面図である。FIG. 2 is an enlarged sectional view of a partition wall.
【図3】本発明のレトルトの他の実施の形態の断面図で
ある。
FIG. 3 is a sectional view of another embodiment of the retort of the present invention.
【符号の説明】[Explanation of symbols]
1:炉体 4:一次燃焼室 5:二次燃焼室 8:レトルト 12:仕切壁 13:螺旋管 14:仕切板 15:乾燥ゾーン 16:乾留炭化ゾーン 17:賦活ゾーン 18:パイプ 19:排気管 26、27:バーナー 1: Furnace body 4: Primary combustion chamber 5: Secondary combustion chamber 8: Retort 12: Partition wall 13: Spiral tube 14: Partition plate 15: Drying zone 16: Carbonization zone 17: Activation zone 18: Pipe 19: Exhaust pipe 26, 27: Burner

Claims (4)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 炉体をほぼ水平に貫通して回転駆動され
    る金属製のレトルト内を被処理物の流通を許してガスの
    流通を遮断する仕切壁により入口から出口に向かって乾
    燥ゾーン、乾留炭化ゾーン及び賦活ゾーンに区切り、該
    レトルトの前記乾留炭化ゾーン及び賦活ゾーンに該レト
    ルト内のガスを前記炉体内に放出する排気管を設け、前
    記炉体の前記乾留炭化ゾーン及び賦活ゾーンに対応する
    位置にバーナーを設け、前記乾燥ゾーンを前記炉体の前
    記乾留炭化ゾーン及び賦活ゾーンに対応する位置から流
    入する燃焼ガスによって前記レトルトの外から加熱する
    ようになっているとともに、前記乾燥ゾーン内で発生す
    るガスを前記賦活ゾーンに供給するパイプを設けたこと
    を特徴とする連続炭化炉。
    1. A drying zone from an inlet to an outlet by a partition wall that allows a flow of an object to be processed and blocks a flow of a gas in a metal retort that is rotated and driven substantially horizontally through a furnace body. An exhaust pipe for releasing gas in the retort into the furnace is provided in the dry distillation carbonization zone and the activation zone of the retort, corresponding to the dry distillation carbonization zone and the activation zone. A burner is provided at a position where the drying zone is heated from outside the retort by a combustion gas flowing from a position corresponding to the dry distillation carbonization zone and the activation zone of the furnace body. A continuous carbonization furnace provided with a pipe for supplying gas generated in the above to the activation zone.
  2. 【請求項2】 前記パイプが前記乾留炭化ゾーンを貫通
    して設けられていることを特徴とする請求項1記載の連
    続炭化炉。
    2. The continuous carbonization furnace according to claim 1, wherein said pipe is provided through said dry distillation carbonization zone.
  3. 【請求項3】 前記パイプが前記乾留炭化ゾーンを迂回
    して設けられていることを特徴とする請求項1記載の連
    続炭化炉。
    3. The continuous carbonization furnace according to claim 1, wherein the pipe is provided so as to bypass the dry distillation carbonization zone.
  4. 【請求項4】 前記乾燥ゾーンが前記燃焼ガスを該乾燥
    ゾーン内に打ち込むことによって加熱されるようになっ
    ていることを特徴とする請求項1、2または3記載の連
    続炭化炉。
    4. The continuous carbonization furnace according to claim 1, wherein the drying zone is heated by driving the combustion gas into the drying zone.
JP10108479A 1998-04-03 1998-04-03 Continuous carbonization furnace Pending JPH11286684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10108479A JPH11286684A (en) 1998-04-03 1998-04-03 Continuous carbonization furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10108479A JPH11286684A (en) 1998-04-03 1998-04-03 Continuous carbonization furnace

Publications (1)

Publication Number Publication Date
JPH11286684A true JPH11286684A (en) 1999-10-19

Family

ID=14485804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10108479A Pending JPH11286684A (en) 1998-04-03 1998-04-03 Continuous carbonization furnace

Country Status (1)

Country Link
JP (1) JPH11286684A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473583B1 (en) * 2001-02-13 2005-03-07 김병길 Equipments and method for Manufacturing active carbon using food wastes
JP2005344099A (en) * 2004-05-07 2005-12-15 Tokyo Electric Power Co Inc:The Sludge-carbonized fuel, and method and system for producing the same
JP2006001805A (en) * 2004-06-18 2006-01-05 Takasago Ind Co Ltd Method for producing carbonized material
JP2006187694A (en) * 2004-12-28 2006-07-20 Nobuaki Debari Apparatus and method for vacuum continuous thermal decomposition treatment
KR100732409B1 (en) 2006-08-02 2007-06-28 (주)경기환경기술 Continuous carbonated apparatus of wood
KR100753234B1 (en) 2006-08-24 2007-08-30 해표산업 주식회사 Apparatus for carbonizing rice hulls
JP2008222959A (en) * 2007-03-15 2008-09-25 Toshiba Corp Carbonization system
KR101251588B1 (en) * 2010-02-22 2013-04-08 (주) 디엠아이씨 Heating Furnace And Device Of Carbonized Wood Using There
JP2013224357A (en) * 2012-04-20 2013-10-31 Takasago Ind Co Ltd Method and device for immobilizing co2
CN103708452A (en) * 2012-10-09 2014-04-09 中国科学院城市环境研究所 Self-heating continuous carbonization and activation processing method for biomass and device thereof
CN103725300A (en) * 2014-01-25 2014-04-16 李冬 Continuous feeding straw high-speed carbonizing apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473583B1 (en) * 2001-02-13 2005-03-07 김병길 Equipments and method for Manufacturing active carbon using food wastes
JP2005344099A (en) * 2004-05-07 2005-12-15 Tokyo Electric Power Co Inc:The Sludge-carbonized fuel, and method and system for producing the same
JP2006001805A (en) * 2004-06-18 2006-01-05 Takasago Ind Co Ltd Method for producing carbonized material
JP2006187694A (en) * 2004-12-28 2006-07-20 Nobuaki Debari Apparatus and method for vacuum continuous thermal decomposition treatment
JP4539329B2 (en) * 2004-12-28 2010-09-08 宣明 出張 Reduced pressure continuous pyrolysis apparatus and reduced pressure continuous pyrolysis method
KR100732409B1 (en) 2006-08-02 2007-06-28 (주)경기환경기술 Continuous carbonated apparatus of wood
KR100753234B1 (en) 2006-08-24 2007-08-30 해표산업 주식회사 Apparatus for carbonizing rice hulls
JP2008222959A (en) * 2007-03-15 2008-09-25 Toshiba Corp Carbonization system
KR101251588B1 (en) * 2010-02-22 2013-04-08 (주) 디엠아이씨 Heating Furnace And Device Of Carbonized Wood Using There
JP2013224357A (en) * 2012-04-20 2013-10-31 Takasago Ind Co Ltd Method and device for immobilizing co2
CN103708452A (en) * 2012-10-09 2014-04-09 中国科学院城市环境研究所 Self-heating continuous carbonization and activation processing method for biomass and device thereof
CN103708452B (en) * 2012-10-09 2015-08-05 中国科学院城市环境研究所 A kind of autothermal continuously carbonizing activation working method of biomass and device thereof
CN103725300A (en) * 2014-01-25 2014-04-16 李冬 Continuous feeding straw high-speed carbonizing apparatus

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