JPH08110165A - Device for shielding gas flow within retort of external heated type rotary kiln - Google Patents

Device for shielding gas flow within retort of external heated type rotary kiln

Info

Publication number
JPH08110165A
JPH08110165A JP27437694A JP27437694A JPH08110165A JP H08110165 A JPH08110165 A JP H08110165A JP 27437694 A JP27437694 A JP 27437694A JP 27437694 A JP27437694 A JP 27437694A JP H08110165 A JPH08110165 A JP H08110165A
Authority
JP
Japan
Prior art keywords
retort
gas flow
gas
flow
circumference
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.)
Granted
Application number
JP27437694A
Other languages
Japanese (ja)
Other versions
JP3548613B2 (en
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 JP27437694A priority Critical patent/JP3548613B2/en
Publication of JPH08110165A publication Critical patent/JPH08110165A/en
Application granted granted Critical
Publication of JP3548613B2 publication Critical patent/JP3548613B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To provide a gas flow shielding device having a wide allowable range capable of shielding a flow of gas while allowing a flow of solid material irrespective of an amount of materials to be processed by a method wherein a transferring plate contacted with an inner circumference of a retort at its outer circumference is wound in a helical manner on an outer circumference of a cylinder shielded within it. CONSTITUTION: A gas flow shielding device 1 is constructed such that a transferring plate 3 is wound around a cylinder 2 in a helical form and both end plates 4 having upper and lower openings 5 are fixed to both ends of the cylinder 2. Then, the gas flow shielding device 1 is closely inserted into the retort 6. Then, upon rotation of the retort 6, the transferring plate 3 performs an action of a screw conveyor so as to transfer charged or loaded solid material from the opening 5 at one end to the opening 5 at the other end. At this time, in the case that solid material is filled in a space formed between an outer circumferential bottom part of the cylinder 2 between the adjoining transferring plates 3 and the inner circumferential bottom part of the retort 6, the helical passage is closed, resulting in that the flow of gas is shielded.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は、外熱式ロータリーキル
ンのレトルト内の固形物の流通を許容しつつガスの流通
を遮断して、レトルト内に外気が侵入するのを防止した
りレトルト内を複数の雰囲気に区分したりする装置に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention permits the flow of solids in the retort of an externally heated rotary kiln while blocking the flow of gas to prevent outside air from entering the retort or to prevent the inside of the retort from entering. The present invention relates to a device for dividing into a plurality of atmospheres.
【0002】[0002]
【従来の技術】従来、外熱式のロータリーキルンのレト
ルト内の固形物の流通を許容しつつガスの流通を遮断す
るには、本出願人の出願にかかる特開平2−27229
4号公報に記載されたように、レトルト内を遮断板で仕
切り、レトルトの遮断板の供給側に入口を排出側に出口
をそれぞれ形成し、レトルトの外周に前記入口と出口を
つなぐ螺旋形の管路を巻き付け、固形物はレトルトの回
転にともなって螺旋形の管路を通って遮断板の入口側か
ら出口側へ移動するが、ガスは螺旋形の管路が固形物に
より埋められて流通を阻止されるようにした装置が公知
である。
2. Description of the Related Art Conventionally, in order to block the flow of gas while allowing the flow of solids in the retort of an externally heated rotary kiln, the applicant of the present application has filed JP-A-2-27229.
As described in Japanese Patent Publication No. 4, the retort is partitioned by a blocking plate, an inlet is formed on the supply side of the blocking plate of the retort and an outlet is formed on the discharge side, and a spiral shape connecting the inlet and the outlet on the outer periphery of the retort. The pipes are wound, and the solids move from the inlet side to the outlet side of the blocking plate through the spiral pipe line as the retort rotates, but the gas flows while the spiral pipe lines are filled with the solid substances. There are known devices which are designed to prevent the above.
【0003】しかし、このような装置は、処理量の許容
範囲がきわめて狭いという点で改良の余地があった。
However, such an apparatus has room for improvement in that the allowable range of throughput is extremely narrow.
【0004】すなわち、固形物は細長い管路内を移動す
るからその量が少しでも多いと入口で固形物が滞留して
しまい、逆に処理量が少なくなると、管路内に空間がで
きてガスの遮蔽効果が低下する欠点があった。
That is, since the solid matters move in the slender pipeline, if the quantity of solid matters is too large, the solid matters will stay at the inlet. However, there is a drawback in that the shielding effect of is reduced.
【0005】また、従来装置では、レトルトの外周面に
細い管路を螺旋形に巻き付けて溶接しなければならず、
製造が困難な欠点があった。
Further, in the conventional apparatus, a thin pipe line must be spirally wound around the outer peripheral surface of the retort and welded,
It had the drawback of being difficult to manufacture.
【0006】[0006]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来の装置が処理量の許容範囲がきわめて
狭く、また製造が困難であるということである。
SUMMARY OF THE INVENTION The problem to be solved by the present invention is that the conventional apparatus has an extremely narrow throughput range and is difficult to manufacture.
【0007】[0007]
【課題を解決するための手段】本発明はこのような課題
を解決するための手段として、内部が遮蔽された筒体の
外周に外周がレトルトの内周に接する搬送板を螺旋形に
巻き付けてレトルトに固定した構成とした。
As a means for solving such a problem, the present invention spirally winds a carrier plate whose outer periphery is in contact with the inner periphery of a retort on the outer periphery of a cylindrical body whose inside is shielded. It was fixed to the retort.
【0008】[0008]
【発明の作用及び効果】本発明は上記構成になり、最大
限、筒体の外周とレトルトの内周の空間が総て埋まるま
での固形物を通すことができるとともに、最小限、筒体
の外周の底部とレトルトの内周の底部との間に固形物が
充満すればガスの流通が遮断されるのであって、その許
容範囲がきわめて広く、被処理物の多少に拘わらず固形
物の流通を許容しつつガスの流通を遮断することができ
る効果がある。
The present invention has the above-mentioned structure, and at the maximum, the solid material can be passed until the space of the outer circumference of the cylinder and the space of the inner circumference of the retort are completely filled. If solids fill between the bottom of the outer circumference and the bottom of the inner circumference of the retort, the flow of gas is interrupted, and the allowable range is extremely wide, and the flow of solids regardless of the amount of processed material There is an effect that the flow of gas can be blocked while allowing the above.
【0009】また、筒体に搬送板を巻き付けて溶接し、
これをレトルト内に挿入して溶接またはねじ止めよりレ
トルトに固定すればよいから製造が容易である。
Further, the carrier plate is wrapped around the cylindrical body and welded,
Since this may be inserted into the retort and fixed to the retort by welding or screwing, manufacturing is easy.
【0010】[0010]
【実施例】以下、本発明の実施例を添付図面に基づいて
説明する。
Embodiments of the present invention will be described below with reference to the accompanying drawings.
【0011】図1は本発明のガス流通遮断装置1の一実
施例であって、円筒形の筒体2の周りに、搬送板3が螺
旋形に巻き付けられて溶接により固定されており、筒体
2の両端には上下に開口5、5を形成した端板4、4が
張り付けられて筒体2を閉塞している。このガス流通遮
断装置1は、レトルト6内に緊密に挿入され所定の位置
に溶接などにより固定される。
FIG. 1 shows an embodiment of a gas flow interrupting device 1 of the present invention. A carrier plate 3 is spirally wound around a cylindrical body 2 and fixed by welding. End plates 4 and 4 having openings 5 and 5 formed vertically are attached to both ends of the body 2 to close the tubular body 2. The gas flow blocking device 1 is tightly inserted into the retort 6 and fixed at a predetermined position by welding or the like.
【0012】そして、レトルト6が回転すると、搬送板
3がスクリューコンベヤの作用を生じ、充填された固形
物を一端の開口5から他端の開口5へ移送するのである
が、少なくとも、この固形物が隣合う搬送板3の間にお
ける筒体2の外周の底部とレトルト6の内周の底部との
空間を満たしているときは、螺旋形の通路がふさがれる
ため、ガスの流通はほぼ阻止される。
When the retort 6 rotates, the conveyor plate 3 acts as a screw conveyor to transfer the filled solid material from the opening 5 at one end to the opening 5 at the other end. When the space between the transport plates 3 adjacent to each other fills the space between the bottom of the outer circumference of the cylinder 2 and the bottom of the inner circumference of the retort 6, the spiral passage is blocked, and the gas flow is almost blocked. It
【0013】本実施例において、筒体2の開口だけがふ
さがれていれば、その外側の端板4はなくてもよく、よ
って、開口5もなくてもよい。
In this embodiment, if only the opening of the cylindrical body 2 is closed, the end plate 4 on the outside thereof may be omitted, and thus the opening 5 may be omitted.
【0014】図2は本発明のガス流通遮断装置1の他の
実施例であって、入口側の開口5に固形物をすくいとる
ための案内板7、7が設けられている以外は上記実施例
と同一である。
FIG. 2 shows another embodiment of the gas flow interrupting device 1 of the present invention, which is different from the above embodiment except that the opening 5 on the inlet side is provided with guide plates 7 and 7 for scooping solid matters. Same as the example.
【0015】次に、本発明のガス流通遮断装置1を用い
た外熱式ロータリーキルンの一実施例を図3に基づいて
説明する。
Next, an embodiment of an external heat type rotary kiln using the gas flow interrupting device 1 of the present invention will be described with reference to FIG.
【0016】図において、10は炉体であって、上段の
加熱室11と中段の第1排ガス処理室12と下段の第2
排ガス処理室13に仕切られており、第1排ガス処理室
12と第2排ガス処理室13は開口14によって連通
し、第2排ガス処理室13には煙道16設けられてお
り、各室11、12、13には適宜にバーナー15が設
けられている。
In the figure, reference numeral 10 denotes a furnace body, which comprises an upper heating chamber 11, a middle first exhaust gas treatment chamber 12, and a lower second chamber.
It is partitioned into an exhaust gas treatment chamber 13, the first exhaust gas treatment chamber 12 and the second exhaust gas treatment chamber 13 communicate with each other through an opening 14, and the second exhaust gas treatment chamber 13 is provided with a flue 16 and each chamber 11, A burner 15 is appropriately provided in each of 12 and 13.
【0017】加熱室11は2枚の隔壁17、17によっ
て仕切られた中央の排気室18とその左側の第1加熱室
19と右側の第2加熱室20に区画されていて、その中
を耐熱金属製のレトルト6が炉体1及び隔壁17、17
との間にわずかな間隙を残してほぼ水平に貫通してい
る。
The heating chamber 11 is divided into a central exhaust chamber 18 partitioned by two partition walls 17, a first heating chamber 19 on the left side of the exhaust chamber 18 and a second heating chamber 20 on the right side, and the inside thereof is heat-resistant. The metal retort 6 includes the furnace body 1 and the partition walls 17, 17.
It penetrates almost horizontally leaving a slight gap between.
【0018】レトルト6は、その炉体10から突出した
両端部の外周にリング23、23が固定され、炉体10
の外側に立設されたスタンド21、21に軸支されたロ
ーラー22、22によって回転自由に支持され、図示し
ない駆動装置により一方向に回転駆動されるようになっ
ている。
The retort 6 has rings 23, 23 fixed to the outer peripheries of both ends protruding from the furnace body 10,
It is rotatably supported by rollers 22 and 22 which are rotatably supported by stands 21 and 21 which are erected on the outside, and is rotatively driven in one direction by a driving device (not shown).
【0019】そして、レトルト6内の中央部と右端部に
は既述のガス流通遮断装置1、1がが設けられていて、
レトルト6が中央部のガス流通遮断装置1によりその左
側の第1ゾーン39とその右側の第2ゾーン40に区画
され、右端部のガス流通遮断装置1にはその端板4にわ
ずかな間隙を残して筒体2の中心を貫通するノズル25
がレトルト6の外部から挿通され、その先端が第2ゾー
ン40内に挿入されている。
The gas flow shut-off devices 1 and 1 described above are provided at the center and right end of the retort 6.
The retort 6 is divided into a first zone 39 on the left side thereof and a second zone 40 on the right side thereof by the gas flow interrupting device 1 in the central portion, and the gas flow interrupting device 1 at the right end has a slight gap in its end plate 4. Nozzle 25 penetrating the center of cylinder 2
Is inserted from the outside of the retort 6 and its tip is inserted into the second zone 40.
【0020】レトルト6の左側の端部は端板29により
閉塞され、その外側には投入口27を有するホッパー2
6が設置されているとともに、その底部に設けられたス
クリューコンベヤ28が端板29にわずかな間隙を残し
てレトルト6の第1ゾーン39内に挿入されている。
The left end of the retort 6 is closed by an end plate 29, and the hopper 2 having an input port 27 on the outside thereof.
6 is installed, and the screw conveyor 28 provided at the bottom thereof is inserted into the first zone 39 of the retort 6 leaving a slight gap in the end plate 29.
【0021】レトルト6の中央部には第1ゾーン39内
で発生したガスを排気室18に排出する排気筒30が設
けられ、排気室18は開口31によって第1排ガス処理
室12に連通しており、また、第1排ガス処理室12は
第1加熱室19および第2加熱室20と通孔32によっ
て連通している。
An exhaust pipe 30 for exhausting gas generated in the first zone 39 to the exhaust chamber 18 is provided in the center of the retort 6, and the exhaust chamber 18 communicates with the first exhaust gas processing chamber 12 through an opening 31. Further, the first exhaust gas processing chamber 12 communicates with the first heating chamber 19 and the second heating chamber 20 through the through hole 32.
【0022】炉体10の両端とレトルト6の隙間にはカ
バー33が、レトルト6の左端とスクリューコンベヤ2
8の隙間にはカバー34がかぶせられ、また、レトルト
6の右端には下端に開閉弁36を設けたカバー35がか
ぶせられおり、これらのカバー33、34、35とホッ
パー26が送風器37の吸込口に接続されて炉体10
内、レトルト6内及びホッパー26内は負圧に保たれて
ガスの漏出が防止されており、送風器37の吐出口は吐
出管38によって第1排ガス処理室12に接続されてい
る。
A cover 33 is provided in a gap between the retort 6 and both ends of the furnace body 10, and the screw conveyor 2 and the left end of the retort 6 are covered.
A cover 34 is placed on the gap 8 and a cover 35 having an opening / closing valve 36 on the lower end is placed on the right end of the retort 6. The covers 33, 34, 35 and the hopper 26 are attached to the blower 37. Furnace body 10 connected to the suction port
The inside of the retort 6 and the inside of the hopper 26 are kept at a negative pressure to prevent gas from leaking out, and the discharge port of the blower 37 is connected to the first exhaust gas processing chamber 12 by a discharge pipe 38.
【0023】次に、図3に示す外熱式ロータリーキルン
を用いて下水処理汚泥を熱処理した実施例を説明する。
Next, an example in which the sewage-treated sludge is heat-treated using the external heat type rotary kiln shown in FIG. 3 will be described.
【0024】レトルト6の第1ゾーン39内は第1加熱
室19のバーナー15の燃焼量の調節により600℃に
保たれ、第2ゾーン40内は900℃に保たれている。
The inside of the first zone 39 of the retort 6 is kept at 600 ° C. by adjusting the combustion amount of the burner 15 of the first heating chamber 19, and the inside of the second zone 40 is kept at 900 ° C.
【0025】第1ゾーン39内は負圧に保たれていて外
気が侵入しないようになっているから、スクリューコン
ベヤ28により供給されたホッパー26内の汚泥は還元
雰囲気で加熱されて乾留され、熱分解して悪臭と煤を含
むガスと固形物に分かれる。第1ゾーン39で発生した
ガスは、中央のガス流通遮断装置1内の固形物により阻
止されて第2ゾーン40へ流れるのがさまたげられるか
ら、排気筒30を通って排気室18に流出し、開口31
から第1排ガス処理室12に入り、開口14を通って第
2排ガス処理室13に入り、煙道16から排出される間
にバーナー15により完全に焼却され、悪臭や煤は消失
する。
Since the inside of the first zone 39 is kept at a negative pressure so that the outside air does not enter, the sludge in the hopper 26 supplied by the screw conveyor 28 is heated in a reducing atmosphere to be carbonized and dried. Decomposes and divides into offensive odor and soot-containing gas and solids. The gas generated in the first zone 39 is blocked by the solid matter in the central gas flow cutoff device 1 and is prevented from flowing to the second zone 40, and therefore flows out through the exhaust stack 30 into the exhaust chamber 18, Opening 31
Into the first exhaust gas treatment chamber 12 through the opening 14 into the second exhaust gas treatment chamber 13 and is completely incinerated by the burner 15 while being discharged from the flue 16 so that the foul odor and soot disappear.
【0026】第1ゾーンで乾留された固形物(炭素と灰
分)はレトルト6の回転による中央のガス流通遮断装置
1の螺旋形の搬送板3のスクリューコンベヤ作用により
中央のガス流通遮断装置1を通って第2ゾーン40へ送
り込まれ、900℃に加熱された状態でノズル25から
水分が吹き付けられ、炭素は活性化される。
The solids (carbon and ash) which have been dry-distilled in the first zone are fed to the central gas flow interrupting device 1 by the screw conveyor action of the spiral conveying plate 3 of the central gas flow interrupting device 1 by the rotation of the retort 6. The water is blown through the nozzle 25 into the second zone 40 through the nozzle 25, and the carbon is activated.
【0027】活性化された炭素を含む第2ゾーン40内
の固形物は右端のガス流通遮断装置1を通ってレトルト
6の端部からカバー35内に落下し、開閉弁36を開く
ことにより取り出される。
The solid matter in the second zone 40 containing the activated carbon passes through the gas flow cutoff device 1 at the right end, falls from the end of the retort 6 into the cover 35, and is taken out by opening the open / close valve 36. Be done.
【0028】取り出された固形物は活性化した炭素を含
むから、脱臭剤、濾過剤あるいは花壇や菜園の肥料とし
て有効である。
Since the solid matter taken out contains activated carbon, it is effective as a deodorant, a filtering agent or a fertilizer for flower beds and vegetable gardens.
【0029】ホッパー26内やレトルト6及び炉体10
の隙間から漏れ出したガスは送風器37により吸い出さ
れて第1排ガス処理室12に送り込まれ、バーナー15
により悪臭が焼却されて煙道16から排出される。
Inside the hopper 26, the retort 6 and the furnace body 10.
The gas leaked from the gap between the first exhaust gas processing chamber 12 and the burner 15 is sucked by the blower 37.
As a result, the bad smell is incinerated and discharged from the flue 16.
【0030】ガス流通遮断装置1はごくわずかな固形物
で通路がふさがれてガス遮断の効果があり、また、ガス
の流通を遮断する最小処理量の約3倍の量までの固形物
を入口で滞留させることなく円滑に通過させることがで
きる。
The gas flow shut-off device 1 has an effect of shutting off the gas by blocking the passage with a very small amount of solid matter, and the solid matter up to about 3 times the minimum throughput for shutting off the flow of gas is introduced. Therefore, it can be passed smoothly without being retained.
【0031】なお、炭素の活性化が不要な場合はノズル
25は不要であり、また、炭素そのものが不要な場合は
右端のガス流通遮断装置1を取り除くか、ノズル25か
ら空気を打ち込めば炭素は燃焼して被処理物は灰のみと
なる。
If the activation of carbon is unnecessary, the nozzle 25 is not necessary. If the carbon itself is unnecessary, the gas flow blocking device 1 at the right end may be removed or air may be blown into the nozzle 25 to remove the carbon. When burned, the only material to be treated is ash.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明のガス流通遮断装置の一実施例の斜視図
である。
FIG. 1 is a perspective view of an embodiment of a gas flow interrupting device of the present invention.
【図2】他の実施例の斜視図である。FIG. 2 is a perspective view of another embodiment.
【図3】本発明のガス流通遮断装置を用いた外熱式ロー
タリーキルンの断面図である。
FIG. 3 is a sectional view of an external heat type rotary kiln using the gas flow interrupting device of the present invention.
【符号の説明】[Explanation of symbols]
1:ガス流通遮断装置 2:筒体 3:搬送板 6:レトルト 1: Gas flow cutoff device 2: Cylindrical body 3: Conveyor plate 6: Retort

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 炉体内を貫通してほぼ水平な軸線周りで
    回転するレトルトの一側から供給した被処理物を他側か
    ら排出する間に熱処理を施すようにした外熱式ロータリ
    ーキルンの前記レトルト内の固形物の流通を許容しつつ
    ガスの流通を遮断する装置であって、内部が遮蔽された
    筒体の外周に外周が前記レトルトの内周に接する搬送板
    を螺旋形に巻き付けて前記レトルトに固定したことを特
    徴とする外熱式ロータリーキルンのレトルト内のガス流
    通遮断装置。
    1. A retort of an external heat type rotary kiln adapted to perform heat treatment while discharging an object to be treated supplied from one side of the retort which penetrates through the furnace body and rotates about a substantially horizontal axis from the other side. A device for interrupting the flow of gas while allowing the flow of solids inside, wherein the retort is formed by spirally winding a carrier plate whose outer circumference is in contact with the inner circumference of the retort on the outer circumference of a cylinder whose inside is shielded. A gas flow cutoff device in the retort of an external heat type rotary kiln, which is fixed to the.
JP27437694A 1994-10-12 1994-10-12 Gas flow shut-off device in retort of externally heated rotary kiln Expired - Fee Related JP3548613B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27437694A JP3548613B2 (en) 1994-10-12 1994-10-12 Gas flow shut-off device in retort of externally heated rotary kiln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27437694A JP3548613B2 (en) 1994-10-12 1994-10-12 Gas flow shut-off device in retort of externally heated rotary kiln

Publications (2)

Publication Number Publication Date
JPH08110165A true JPH08110165A (en) 1996-04-30
JP3548613B2 JP3548613B2 (en) 2004-07-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007271233A (en) * 2006-03-31 2007-10-18 Dowa Holdings Co Ltd Transport device, weir part and rotation type heat treatment device
JP2012013257A (en) * 2010-06-29 2012-01-19 Tdk Corp Firing furnace
JP2015129624A (en) * 2013-12-04 2015-07-16 株式会社ブリヂストン rotary kiln

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007271233A (en) * 2006-03-31 2007-10-18 Dowa Holdings Co Ltd Transport device, weir part and rotation type heat treatment device
JP2012013257A (en) * 2010-06-29 2012-01-19 Tdk Corp Firing furnace
JP2015129624A (en) * 2013-12-04 2015-07-16 株式会社ブリヂストン rotary kiln

Also Published As

Publication number Publication date
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