JP2006257197A - Method for stabilizing operation of water-sealed vessel - Google Patents
Method for stabilizing operation of water-sealed vessel Download PDFInfo
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- JP2006257197A JP2006257197A JP2005074822A JP2005074822A JP2006257197A JP 2006257197 A JP2006257197 A JP 2006257197A JP 2005074822 A JP2005074822 A JP 2005074822A JP 2005074822 A JP2005074822 A JP 2005074822A JP 2006257197 A JP2006257197 A JP 2006257197A
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Abstract
Description
本発明は、乾留キルンにより廃棄物を熱分解した残さを投下し、循環ポンプにより循環させる水封槽の操業安定化方法に関する。
具体的には、例えば廃タイヤなどのカーボンを含む廃棄物を熱分解した残さを含む流体を循環させながら比重差によって分離する水封槽の操業安定化方法に関する。
The present invention relates to a method for stabilizing the operation of a water-sealed tank in which a residue obtained by thermally decomposing waste with a dry distillation kiln is dropped and circulated by a circulation pump.
Specifically, the present invention relates to a method for stabilizing the operation of a water-sealed tank that separates by a difference in specific gravity while circulating a fluid containing a residue obtained by pyrolyzing waste containing carbon such as a waste tire.
タイヤは、平均的に１３％程度のワイヤ、３０％程度のカーボンと 残りがゴム、石油系軟化材、繊維材料にて構成されており、廃タイヤを、完全乾留で400〜700℃で熱分解させると、ゴムおよび軟化材が熱分解され、高カロリーガス、油、ワイヤ、およびカーボンが生成される。
たとえば、約600℃で熱分解すると、約２０wt%がガス、約３０％が油、約３７％がカーボン、および１３％のワイヤができ、実際に外熱型乾留キルンにて廃タイヤを外熱を利用して、熱分解させると前記した再生物が回収可能となる。
図３は、廃タイヤを乾留キルンにより処理する場合の従来の設備フローを示す図である。
廃タイヤは、乾留キルンに定量供給され、400〜700℃にて熱分解され、乾留キルン炉尻より、ガス、油分はガス化にて上部より排出され、下部方向では、ガス化されないワイヤおよび残さカーボンなどの熱分解残さが排出され、比重分離にてワイヤおよび残さカーボンが分離回収される。
Tires are made up of an average of about 13% wire, about 30% carbon, and the remainder made of rubber, petroleum-based softening material, and fiber material. Waste tires are pyrolyzed at 400-700 ° C by complete dry distillation. When done, the rubber and softening material are pyrolyzed, producing high calorie gas, oil, wire, and carbon.
For example, when pyrolysis is performed at about 600 ° C., about 20 wt% of gas, about 30% of oil, about 37% of carbon, and 13% of wire are produced. When the thermal decomposition is performed using the above, the above-mentioned regenerated product can be recovered.
FIG. 3 is a diagram showing a conventional equipment flow when a waste tire is processed by a dry distillation kiln.
Waste tires are quantitatively supplied to the dry distillation kiln, thermally decomposed at 400-700 ° C, gas and oil are discharged from the top of the dry distillation kiln bottom, and gas and gas are left in the lower direction. Pyrolysis residue such as carbon is discharged, and the wire and residual carbon are separated and recovered by specific gravity separation.
残さ回収設備では、乾留キルンより排出されたワイヤおよび残さカーボンを含む熱分解残さを、シール装置を兼ねた水封槽１の水中に設置した水封水車６にて水中に引き込み、比重分離にてワイヤと残さに分離する。
水封槽１に沈降したワイヤはワイヤ掻上げコンベヤにて回収され、水面へ浮上した残さカーボンは水流を利用して、残さ回収コンベヤへ誘導し、同コンベヤにて回収される。
残さカーボン誘導用の水流は排水を出さないようにするために、水封槽の水を循環ポンプ３により循環させて利用するが、水封槽１の水を取水する際に水中に浮遊している残さカーボンも同伴させてしまうため、数分おきにストレーナの清掃が必要となるという問題点があった。
なお、熱分解残さを比重分離する方法に関しては、例えば特開２００３−２３６４０６号公報に開示されているが、前述のようなストレーナの目詰まりを解消する方法については検討されていなかった。
The wire that has settled in the water sealing tank 1 is collected by a wire scraping conveyor, and the residual carbon that has floated to the water surface is guided to the residue collecting conveyor by using a water flow and collected by the conveyor.
The remaining carbon-inducing water stream is used by circulating the water in the water-sealed tank with the circulation pump 3 so as not to discharge the waste water. However, when the water in the water-sealed tank 1 is taken in, it floats in the water. Since the remaining carbon is also accompanied, there is a problem that the strainer needs to be cleaned every few minutes.
In addition, although the specific gravity separation of the pyrolysis residue is disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-236406, a method for eliminating the strainer clogging as described above has not been studied.
本発明は、前述のような従来技術の問題点を解決し、連続運転が可能で、ストレーナ清掃要員の削減が可能な水封槽の操業安定化方法を提供することを課題とする。 An object of the present invention is to solve the above-described problems of the prior art, and to provide a method for stabilizing the operation of a water-sealed tank capable of continuous operation and reducing the number of strainer cleaning personnel.
本発明は、前述の課題を解決するために、鋭意検討の結果なされたものであり、取水部を複数系統とし、取水部で残さカーボンを捕集し、取水部を切替えながら自動逆洗することにより、簡単な機器構成で連続運転が可能で、ストレーナ清掃要員の削減が可能な水封槽の操業安定化方法を提供するものであり、その要旨とするところは、特許請求の範囲に記載した通りの下記内容である。
（１）乾留キルンにより廃棄物を熱分解した残さを投下し、循環ポンプにより循環させる水封槽の操業安定化方法であって、前記水封槽に複数の取水部を設け、該取水部に設けた金網により前記熱分解した残さに含まれる残さカーボンを捕集し、前記複数の取水部のうち閉塞した取水部からの取水を停止して、該閉塞した取水部に設けられた金網に流体による逆圧をかけて洗浄しながら、閉塞していない取水部からの取水を継続することにより、前記循環ポンプを停止させることなく取水部の閉塞を解除することを特徴とする水封槽の操業安定化方法。
（２）記取水部の下流における圧力と水封槽の圧力との差圧を監視することにより、前記取水部の閉塞を検知して、自動弁により取水を停止することを特徴とする請求項１に記載の水封槽の操業安定化方法。
The present invention has been made as a result of intensive studies in order to solve the above-mentioned problems. The intake section has multiple systems, carbon remaining in the intake section is collected, and automatic backwashing is performed while switching the intake section. Provides a method for stabilizing the operation of a water-sealed tank that can be continuously operated with a simple equipment configuration and can reduce the number of strainer cleaning personnel, and the gist of the method is described in the claims. The following contents of the street.
(1) A method for stabilizing the operation of a water-sealed tank in which a residue obtained by thermally decomposing waste by a dry distillation kiln is dropped and circulated by a circulation pump, wherein the water-sealed tank is provided with a plurality of water intakes, Residual carbon contained in the pyrolyzed residue is collected by a wire mesh provided, water intake from the closed water intake portion among the plurality of water intake portions is stopped, and a fluid is applied to the wire mesh provided in the closed water intake portion The operation of the water-sealed tank is characterized by releasing the blockage of the water intake unit without stopping the circulation pump by continuing water intake from the non-blocked water intake unit while washing with back pressure by Stabilization method.
(2) By monitoring the differential pressure between the pressure downstream of the water intake section and the pressure in the water sealing tank, the intake of the water intake section is detected and water intake is stopped by an automatic valve. The method for stabilizing the operation of the water-sealed tank according to 1.
本発明によれば、取水部を複数系統とし、取水部で残さカーボンを捕集し、取水部を切替えながら自動逆洗することにより、簡単な機器構成で連続運転が可能で、ストレーナ清掃要員の削減が可能な水封槽の操業安定化方法を提供することができ、具体的には下記のような産業上有用な著しい効果を奏する。
１）取水部を複数系統設け、閉塞した系統のみ取水停止することにより取水量が安定するため、カーボンの誘導を安定化させることができる。
２）取水部の下流における圧力と水封槽の圧力との差圧を監視することにより、前記取水部の閉塞を検知して、自動弁により取水を停止して自動的に逆洗することによりストレーナ清掃要員が不要となる。
According to the present invention, a plurality of water intake units are collected, carbon remaining in the water intake unit is collected, and automatic backwashing is performed while switching the water intake unit, so that continuous operation is possible with a simple equipment configuration. It is possible to provide a method for stabilizing the operation of a water-sealed tank that can be reduced, and specifically, there are significant industrially useful effects as described below.
1) Since a plurality of water intake units are provided and the water intake amount is stabilized by stopping the intake of only the closed system, the induction of carbon can be stabilized.
2) By monitoring the pressure difference between the pressure downstream of the water intake section and the pressure in the water sealing tank, by detecting the blockage of the water intake section, the automatic valve stops water intake and automatically backwashes. Strainer cleaning personnel are not required.
本発明の実施形態について、図１および図２を用いて詳細に説明する。
図１は、本発明における水封槽の操業安定化方法の実施形態を例示する図である。
図１において、１は水封槽、２は取水部、３は循環ポンプ、４は取水切替用自動弁、５は逆洗用自動弁、６は水封水車を示す。
本発明は、乾留キルンにより廃棄物を熱分解した残さを投下し、循環ポンプ３により循環させる水封槽１の操業安定化方法である。
図１に示すように、本発明においては、前記水封槽１に複数の取水部２を設け、該取水部２に設けた金網により前記熱分解した残さに含まれる残さカーボンを捕集し、前記複数の取水部２のうち閉塞した取水部からの取水を停止して、該閉塞した取水部に設けられた金網に流体による逆圧をかけて洗浄しながら、閉塞していない取水部からの取水を継続することにより、前記循環ポンプ３を停止させることなく取水部の閉塞を解除することを特徴とする。
水封槽１に複数（図１の例では２箇所）の取水部２を設け、取水部２に従来のストレーナと同等の開口を持った残さカーボン捕集用の金網を設置し、残さカーボンを捕集する。
An embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.
FIG. 1 is a diagram illustrating an embodiment of a method for stabilizing the operation of a water-sealed tank in the present invention.
In FIG. 1, 1 is a water sealing tank, 2 is a water intake section, 3 is a circulation pump, 4 is an automatic valve for switching water intake, 5 is an automatic valve for backwashing, and 6 is a water sealed water wheel.
The present invention is a method for stabilizing the operation of a water-sealed tank 1 in which a residue obtained by pyrolyzing waste by a dry distillation kiln is dropped and circulated by a circulation pump 3.
As shown in FIG. 1, in the present invention, the water sealing tank 1 is provided with a plurality of water intakes 2, and residual carbon contained in the thermally decomposed residue is collected by a wire net provided in the water intake 2. Stopping water intake from the closed water intake part among the plurality of water intake parts 2 and washing the wire mesh provided in the closed water intake part by applying back pressure with a fluid, By continuing the water intake, the blockage of the water intake portion is released without stopping the circulation pump 3.
A plurality of (two in the example of FIG. 1) water intake sections 2 are provided in the water sealing tank 1, and a wire net for collecting residual carbon having an opening equivalent to that of a conventional strainer is installed in the water intake section 2, and the residual carbon is removed. Collect.
例えば、図１左側の取水部２の金網に残さカーボンが付着して取水部２が閉塞した場合には点線で示す取水ラインの取水切替用自動弁４を閉じることによって取水を停止しながら、閉塞していない実線の取水ラインの取水切替用自動弁４を開けたままにすることによって取水を継続し、閉塞した金網に、水、圧縮空気、窒素などの流体を供給する逆洗用自動弁５を開けることによって逆圧をかけて洗浄することにより、循環ポンプ３を停止させることなく、取水部の閉塞を解除することができる。
また、図１右側の取水部２が閉塞した場合には、図１の点線で示すラインの取水切替用自動弁４および逆洗用自動弁５を開けて点線のラインに流体を流すことによって、循環ポンプ３を停止させることなく、取水部の閉塞を解除することができる。
これによって、従来必要であった、頻繁なストレーナの清掃作業をなくすことができる。
For example, when carbon remains on the wire mesh of the intake section 2 on the left side of FIG. 1 and the intake section 2 is blocked, the intake valve is closed by closing the intake valve automatic switching valve 4 of the intake line indicated by the dotted line. The automatic valve 5 for backwashing that supplies water such as water, compressed air, and nitrogen to the closed wire mesh is maintained by keeping the automatic intake valve 4 for the intake line of the solid intake line left open. By opening the valve and washing it with reverse pressure, it is possible to release the blockage of the water intake without stopping the circulation pump 3.
In addition, when the water intake section 2 on the right side of FIG. 1 is blocked, by opening the automatic water intake switching valve 4 and the backwash automatic valve 5 of the line shown by the dotted line in FIG. The blockage of the water intake section can be released without stopping the circulation pump 3.
This eliminates the frequent strainer cleaning work that was conventionally required.
また、水封槽１は大気に開放されているので、図１に示すように取水部２の下流に負圧ゲージＰＧを設けることによって、取水部２の下流における圧力と水封槽の圧力との差圧を監視することにより、前記取水部の閉塞を検知して、自動弁により取水を停止することができる。
図２は、本発明に用いる取水部を例示する詳細図である。
図２に示すように、取水部の内面に金網８を設けることによって、水封槽に浮遊する残さカーボンを捕集することができるようにするとともに、金網８の外面から逆洗用ノズル９により、水、圧縮空気、窒素などの流体を噴射して逆圧をかけ洗浄することにより、金網８に付着した残さカーボンを除去して取水口７の閉塞状態を解除することができる。
本発明によれば、複数の取水部２を設け、取水部２に設けた金網によって残さカーボンを捕集し、取水部２を切替えながら自動逆洗することにより、簡単な機器構成で連続運転が可能で、ストレーナ清掃要員の削減が可能な水封槽の操業安定化方法を提供することができる。
In addition, since the water sealing tank 1 is open to the atmosphere, as shown in FIG. 1, by providing a negative pressure gauge PG downstream of the water intake part 2, the pressure downstream of the water intake part 2 and the pressure of the water sealed tank By monitoring the differential pressure, it is possible to detect the blockage of the water intake and stop the water intake by the automatic valve.
FIG. 2 is a detailed view illustrating a water intake unit used in the present invention.
As shown in FIG. 2, by providing a metal mesh 8 on the inner surface of the water intake, it is possible to collect residual carbon floating in the water-sealed tank, and backwash nozzle 9 from the outer surface of the metal mesh 8. The remaining carbon adhering to the wire mesh 8 can be removed and the closed state of the intake port 7 can be released by jetting a fluid such as water, compressed air, nitrogen, etc., and washing with reverse pressure.
According to the present invention, a plurality of water intake sections 2 are provided, carbon remaining in the water intake section 2 is collected, and automatic backwashing is performed while the water intake section 2 is switched, thereby enabling continuous operation with a simple equipment configuration. It is possible to provide a method for stabilizing the operation of a water-sealed tank that can reduce the number of strainer cleaning personnel.
本発明の水封槽の操業安定化方法を、下記条件にて実施した。
＜実施条件＞
炉尻乾留ガス 600℃
ワイヤ発生量 520kg/h
残さカーボン発生量 1200kg/h
水封槽取水量 70m3/h
その結果、取水部に設けた金網に残さカーボンが付着して閉塞しても、閉塞していない他方の取水部から取水することによって、水封槽の操業を継続することができ、本発明の効果が確認された。
The operation stabilization method of the water-sealed tank of the present invention was carried out under the following conditions.
<Conditions for implementation>
Furnace bottom dry distillation gas 600 ℃
Wire generation amount 520kg / h
Residual carbon generation amount 1200kg / h
Water-sealed tank water intake 70m3 / h
As a result, even if carbon remains attached to the wire mesh provided in the water intake section and is blocked, the water sealing tank can be operated by taking water from the other water intake section that is not blocked, The effect was confirmed.
Claims (2)
前記水封槽に複数の取水部を設け、該取水部に設けた金網により前記熱分解した残さに含まれる残さカーボンを捕集し、
前記複数の取水部のうち閉塞した取水部からの取水を停止して、該閉塞した取水部に設けられた金網に流体による逆圧をかけて洗浄しながら、閉塞していない取水部からの取水を継続することにより、前記循環ポンプを停止させることなく取水部の閉塞を解除することを特徴とする水封槽の操業安定化方法。 A method for stabilizing the operation of a water-sealed tank in which a residue obtained by pyrolyzing waste by a dry distillation kiln is dropped and circulated by a circulation pump,
A plurality of water intake units are provided in the water-sealed tank, and residual carbon contained in the thermally decomposed residue is collected by a wire mesh provided in the water intake unit,
Water intake from an unoccupied intake section is stopped while stopping intake from the closed intake section of the plurality of intake sections and washing the metal mesh provided in the closed intake section by applying a reverse pressure with a fluid. The method for stabilizing the operation of the water-sealed tank is characterized in that the blockage of the water intake section is released without stopping the circulation pump.
2. The intake of water is stopped by an automatic valve by detecting the blockage of the water intake by monitoring the pressure difference between the pressure downstream of the water intake and the pressure in the water sealing tank. To stabilize the operation of water-sealed tanks.
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| JP2005074822A JP2006257197A (en) | 2005-03-16 | 2005-03-16 | Method for stabilizing operation of water-sealed vessel |
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| JP2005074822A JP2006257197A (en) | 2005-03-16 | 2005-03-16 | Method for stabilizing operation of water-sealed vessel |
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Citations (6)
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|---|---|---|---|---|
| JPS49141483U (en) * | 1973-03-28 | 1974-12-05 | ||
| JPS53137571A (en) * | 1977-05-06 | 1978-12-01 | Hitachi Plant Eng & Constr Co Ltd | Scum disposal device |
| JP2000192050A (en) * | 1998-12-24 | 2000-07-11 | Kurimoto Ltd | Discharge port structure of carbonization oven |
| JP2000312870A (en) * | 1999-04-28 | 2000-11-14 | Chiyoda Corp | Coagulable substance solidifying apparatus |
| JP2004066004A (en) * | 2002-08-01 | 2004-03-04 | Hitachi Ltd | Waste treating facility |
| JP2005074320A (en) * | 2003-09-01 | 2005-03-24 | Nippon Steel Corp | Separation device for pyrolysis residue |
-
2005
- 2005-03-16 JP JP2005074822A patent/JP2006257197A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49141483U (en) * | 1973-03-28 | 1974-12-05 | ||
| JPS53137571A (en) * | 1977-05-06 | 1978-12-01 | Hitachi Plant Eng & Constr Co Ltd | Scum disposal device |
| JP2000192050A (en) * | 1998-12-24 | 2000-07-11 | Kurimoto Ltd | Discharge port structure of carbonization oven |
| JP2000312870A (en) * | 1999-04-28 | 2000-11-14 | Chiyoda Corp | Coagulable substance solidifying apparatus |
| JP2004066004A (en) * | 2002-08-01 | 2004-03-04 | Hitachi Ltd | Waste treating facility |
| JP2005074320A (en) * | 2003-09-01 | 2005-03-24 | Nippon Steel Corp | Separation device for pyrolysis residue |
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