JP3095609B2 - Ash pyrolysis equipment - Google Patents
Ash pyrolysis equipmentInfo
- Publication number
- JP3095609B2 JP3095609B2 JP06062252A JP6225294A JP3095609B2 JP 3095609 B2 JP3095609 B2 JP 3095609B2 JP 06062252 A JP06062252 A JP 06062252A JP 6225294 A JP6225294 A JP 6225294A JP 3095609 B2 JP3095609 B2 JP 3095609B2
- Authority
- JP
- Japan
- Prior art keywords
- ash
- gas
- harmful substances
- dioxins
- cooling
- 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.)
- Expired - Lifetime
Links
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- Fire-Extinguishing Compositions (AREA)
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、都市ごみや産業廃棄物
などを焼却処理する際に発生する焼却灰に含まれるダイ
オキシン類などの有害な物質を取り除く灰加熱分解装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ash thermal decomposition apparatus for removing harmful substances such as dioxins contained in incinerated ash generated when incinerating municipal waste and industrial waste.
【０００２】[0002]
【従来の技術】従来、図２に示したような灰加熱分解装
置が提案されている。図２において、１はごみ焼却炉な
どにおいて集じん器で捕集されたダイオキシン類などの
有害物質を含有する飛灰を投入する灰ホッパであり、そ
の取出口は供給管２を介してバルブ３に連結され、バル
ブ３は供給管４を介して灰加熱装置５の投入口に連結さ
れている。灰加熱装置５内部の長手方向には、投入され
た飛灰を排出口に送るスクリューコンベア（図示せず）
が設けられ、また、灰加熱装置５の長手方向外部には駆
動モータ６が設置されていて、この駆動モータ６はスク
リューコンベアの回動軸７に連結されている。また、灰
加熱装置５の排出口は移送管８を介して灰冷却装置９の
投入口に接続されている。灰冷却装置９内部の長手方向
には、加熱処理された飛灰を排出口に送るスクリューコ
ンベア（図示せず）が設けられ、また、灰冷却装置９の
長手方向外部には駆動モータ１０が設置されていて、こ
の駆動モータ１０はスクリューコンベアの回動軸１１に
連結されている。灰冷却装置９の排出口は、飛灰を蓄え
る灰バンカ１２の開口部に開口する供給管１３に連結さ
れており、この供給管１３にはバルブ１４が設けられて
いる。2. Description of the Related Art Conventionally, an ash pyrolysis apparatus as shown in FIG. 2 has been proposed. In FIG. 2, reference numeral 1 denotes an ash hopper for charging fly ash containing harmful substances such as dioxins collected by a dust collector in a refuse incinerator or the like. , And the valve 3 is connected to the inlet of the ash heating device 5 via the supply pipe 4. In the longitudinal direction inside the ash heating device 5, a screw conveyor (not shown) for feeding the supplied fly ash to a discharge port
A drive motor 6 is provided outside the ash heating device 5 in the longitudinal direction, and the drive motor 6 is connected to a rotary shaft 7 of a screw conveyor. The outlet of the ash heating device 5 is connected to the inlet of the ash cooling device 9 via the transfer pipe 8. A screw conveyor (not shown) for feeding the heat-treated fly ash to the discharge port is provided in the longitudinal direction inside the ash cooling device 9, and a drive motor 10 is installed outside the longitudinal direction of the ash cooling device 9. The drive motor 10 is connected to a rotary shaft 11 of a screw conveyor. The outlet of the ash cooling device 9 is connected to a supply pipe 13 opening to an opening of an ash bunker 12 for storing fly ash, and the supply pipe 13 is provided with a valve 14.
【０００３】灰加熱装置５の排出口の上方に設けられた
排気口は吸気管２１を介してフィルタ２２の流入側に連
結され、このフィルタ２２の流出側は吸気管２３を介し
てガス冷却器２４の流入側に連結されている。ガス冷却
器２４の流出側は吸気管２５を介してガス循環ポンプ２
６の流入側に連結され、このガス循環ポンプ２６の流出
側は吸気管２７の一端に連結され、吸気管２７の他端は
重金属沈殿槽２８の沈殿液中に開口している。重金属沈
殿槽２８には沈殿液としてのキレート液が入れられてい
て、水銀等の低沸点重金属など、有害物質を沈殿させる
ようになっている。An exhaust port provided above an outlet of the ash heating device 5 is connected to an inflow side of a filter 22 through an intake pipe 21, and an outflow side of the filter 22 is connected to a gas cooler through an intake pipe 23. 24 is connected to the inflow side. The outflow side of the gas cooler 24 is connected to the gas circulation pump 2 through an intake pipe 25.
6 is connected to the inflow side, and the outflow side of the gas circulation pump 26 is connected to one end of an intake pipe 27, and the other end of the intake pipe 27 opens into the sedimentation liquid in the heavy metal precipitation tank 28. The heavy metal sedimentation tank 28 contains a chelating liquid as a sedimentation liquid to precipitate harmful substances such as low boiling heavy metals such as mercury.
【０００４】また、一端が重金属沈殿槽２８の沈殿液面
上に開口する循環用の配管２９は、供給管４および供給
管１３に連結されるとともに、圧力逃がし弁であるコン
トロール弁３０を介して外部に開口している。このコン
トロール弁３０と循環用配管２９の間には圧力検出器３
０ａが介装されている。A circulation pipe 29, one end of which is opened on the surface of the sedimentation liquid of the heavy metal precipitation tank 28, is connected to the supply pipe 4 and the supply pipe 13 and via a control valve 30 which is a pressure relief valve. Open to the outside. A pressure detector 3 is provided between the control valve 30 and the circulation pipe 29.
0a is interposed.
【０００５】上記構成により、ダイオキシン類などの有
害物質を含有する飛灰は、灰ホッパ１より投入されてバ
ルブ３で調整されつつ灰加熱装置５に送られ、灰加熱装
置５内で酸素不足下、３００℃以上の高温状態たとえば
４００℃に３０分以上保持されて、飛灰に化学的、物理
的に吸着した水分や水銀などの低沸点重金属は気相中に
蒸発、揮散され、ダイオキシン類などは熱分解される。
このようにして有害物質が除去されて無害化された飛灰
は灰冷却装置９に送られ、装置９内で１４０℃以下の温
度で冷却された後、灰バンカ１２に蓄えられる。[0005] With the above structure, fly ash containing harmful substances such as dioxins is fed from the ash hopper 1 and sent to the ash heating device 5 while being adjusted by the valve 3. And high-boiling heavy metals such as water and mercury that are chemically and physically adsorbed to fly ash are vaporized and volatilized in the gas phase while being kept at a high temperature of 300 ° C. or more, for example, 400 ° C. for 30 minutes or more, and dioxins, etc. Is thermally decomposed.
The fly ash detoxified by removing harmful substances in this way is sent to the ash cooling device 9, cooled at a temperature of 140 ° C. or lower in the device 9, and stored in the ash bunker 12.
【０００６】一方、灰加熱装置５で蒸発、揮散した水銀
などの低沸点重金属や未分解のダイオキシン類などの有
害物質を含む熱ガスの大半は、ガス循環ポンプ２６によ
って灰加熱装置５の排気口から吸引され、まず、フィル
タ２２で塵などが取り除かれる。フィルタ２２を通過し
た熱ガスはガス冷却器２４により冷却され、その後、重
金属沈殿槽２８に導かれて、熱ガス中に含まれていた水
分などが除去されるとともに重金属などは沈殿除去され
る。重金属沈殿槽２８の液面上の圧力の異常上昇が圧力
検出器３０ａで検出された時は、コントロール弁３０を
作動させて外部に逃がすことにより、重金属沈殿槽２８
内の圧力の上昇が防止される。On the other hand, most of the hot gas containing low-boiling-point heavy metals such as mercury and harmful substances such as undecomposed dioxins and the like evaporated and volatilized by the ash heating device 5 is exhausted from the ash heating device 5 by a gas circulation pump 26. , And first, dust and the like are removed by the filter 22. The hot gas that has passed through the filter 22 is cooled by a gas cooler 24, and then guided to a heavy metal sedimentation tank 28 to remove water and the like contained in the hot gas and precipitate and remove heavy metals and the like. When an abnormal rise in pressure on the liquid surface of the heavy metal precipitation tank 28 is detected by the pressure detector 30a, the control valve 30 is operated to release the heavy metal precipitation tank 28 to the outside.
The rise in pressure in the interior is prevented.
【０００７】重金属沈殿槽２８において水分や重金属が
除去されたガスは常時、循環用配管２９、供給管４によ
り灰加熱装置５へと循環されるので、残存するダイオキ
シン類などもいずれ熱分解されることになり、未分解の
有害物質の大気中への放出は防止される。重金属沈殿槽
２８からのガスはさらに、供給管１３より灰冷却装置９
を介して灰加熱装置５に循環されるので、飛灰に随伴し
て灰冷却装置９に至った重金属やダイオキシン類などの
有害物質も灰加熱装置５に戻される。The gas from which water and heavy metals have been removed in the heavy metal precipitation tank 28 is always circulated to the ash heating device 5 by the circulation pipe 29 and the supply pipe 4, so that any remaining dioxins and the like are eventually thermally decomposed. In other words, the release of undecomposed harmful substances into the atmosphere is prevented. The gas from the heavy metal precipitation tank 28 is further supplied from the supply pipe 13 to the ash cooling device 9.
And harmful substances such as heavy metals and dioxins that have reached the ash cooling device 9 accompanying the fly ash are also returned to the ash heating device 5.
【０００８】上記のようにして、ガス循環ポンプ２６で
吸引しつつ処理することにより、灰冷却装置９への熱ガ
スの移行が抑制されるので、重金属の固着、凝縮による
灰冷却装置９の固着トラブルが防止される。As described above, since the transfer of the hot gas to the ash cooling device 9 is suppressed by performing the treatment while sucking the gas with the gas circulation pump 26, the heavy metal is fixed and the ash cooling device 9 is fixed by condensation. Trouble is prevented.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記し
たような灰加熱分解装置は、重金属沈殿槽内の沈殿液の
処理が必要であるため、保守が容易でないという問題が
ある。However, the ash thermal decomposition apparatus as described above has a problem that maintenance is not easy because the precipitation liquid in the heavy metal precipitation tank must be treated.
【００１０】また、重金属沈殿槽を通過したガスは水分
を含んでいるので、このガスが灰の供給部に循環された
ときに、飛灰中に含まれるＣａＣｌ2 やＫ2 Ｏなどがガ
ス中の水分を吸収して潮解し、供給部のバルブおよび周
辺のシュート部に付着して詰まりを起こすため、飛灰の
供給ができなくなるという問題がある。[0010] Further, since the gas that has passed through the heavy metal precipitation tank contains moisture, when this gas is circulated to the ash supply section, CaCl 2 , K 2 O, and the like contained in the fly ash are contained in the gas. The ash is deliquescent by absorbing the water, and adheres to the valve of the supply section and the surrounding chute to cause clogging, so that there is a problem that supply of fly ash becomes impossible.
【００１１】本発明は上記問題を解決するもので、ダイ
オキシン類などの有害物質を取り除いてその大気中への
放出を防止できるとともに、保守が容易な灰加熱分解装
置を提供することを目的とするものである。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an ash pyrolysis apparatus capable of removing harmful substances such as dioxins and preventing their release into the atmosphere and which is easy to maintain. Things.
【００１２】[0012]
【課題を解決するための手段】上記問題を解決するため
に、本発明の灰加熱分解装置は、ダイオキシン類などの
有害物質を含有する灰を３００℃以上で加熱処理しダイ
オキシン類を分解する加熱手段と、前記加熱手段で加熱
処理した灰を冷却する冷却手段とを有する灰加熱分解装
置において、前記加熱処理で蒸発、揮散した有害物質を
含むガスを凝縮させ凝縮物を系外へ排出する凝縮手段
と、前記有害物質を含むガスを吸着濾過し有害物質を除
去する濾過手段と、前記有害物質を含むガスを吸引して
前記凝縮手段と前記濾過手段に順次導く吸引手段と、前
記濾過手段を通過したガスを前記冷却手段を介してある
いは直接に前記加熱手段に循環返送する循環返送手段と
を備えた構成としたものである。In order to solve the above problems SUMMARY OF THE INVENTION, ash thermal decomposition apparatus of the present invention, heat treatment at 300 ° C. or higher ash containing <br/> harmful substances such as dioxins die
Heating means for decomposing oxine compound, in ash thermal decomposition apparatus and a cooling means for cooling the ash heat treatment at the heating means, evaporated in the heat treatment, the volatilized toxic substances
A condensing means for condensing the gas containing and discharging the condensate to the outside of the system, a filtering means for adsorbing and filtering the gas containing the harmful substance to remove the harmful substance, and the condensing means for sucking the gas containing the harmful substance. A suction unit for sequentially leading to the filtration unit; and a gas passing through the filtration unit via the cooling unit.
Or a circulating return means for directly circulating back to the heating means.
Is provided .
【００１３】また本発明の灰加熱分解装置は、濾過手段
として活性炭フィルタを用いたものである。The ash thermal decomposition apparatus of the present invention uses an activated carbon filter as a filtering means.
【００１４】[0014]
【作用】上記構成により、灰中に含まれるダイオキシン
類を熱分解し、ダイオキシン分解温度で蒸発、揮散した
水銀などの有害物質や水分を凝縮させて除去し、凝縮し
なかった有害物質は濾過手段で除去し、濾過手段でも除
去されなかった有害物質は加熱手段に循環返送して再処
理することが可能になり、大気中への有害物質の放出を
確実に防止できる。また、従来のような循環ガス中の水
分を原因とする固着トラブルを防止できるとともに、濾
過手段など、装置の保守も容易になる。According to the above construction, dioxin contained in ash
Were pyrolyzed and evaporated and volatilized at the dioxin decomposition temperature.
Hazardous substances such as mercury and moisture are condensed and removed, and condensed.
Hazardous substances that did not exist are removed by filtration means, and also removed by filtration means.
Hazardous substances not removed are returned to the heating means by circulation and reprocessed.
It is possible to sense, the release of harmful substances into the atmosphere
It can be reliably prevented. Further, it is possible to prevent the conventional fixing trouble caused by the moisture in the circulating gas, and also to facilitate the maintenance of the apparatus such as the filtering means.
【００１５】[0015]
【実施例】以下、本発明の一実施例を図面を参照しなが
ら説明する。なお、従来例と同一の構成および作用を有
するものには同じ符号を付してその説明を省略する。An embodiment of the present invention will be described below with reference to the drawings. Components having the same configuration and operation as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
【００１６】図１は本発明の一実施例の灰加熱分解装置
の概略構成図である。図１において、灰加熱装置５の排
出口の上方に設けられた排気口は吸気管２１を介してフ
ィルタ２２の流入側に連結され、このフィルタ２２の流
出側は吸気管２３を介してガス冷却器３１の流入側に連
結されている。ガス冷却器３１の流出側には、ドレンタ
ンク３２内で開口する排液管３３と、ガス循環ポンプ３
４の流入側に連結された吸気管３５とが接続しており、
吸気管３５には活性炭フィルタ３６が介装されている。
ガス循環ポンプ３４の流出側には循環用配管３７が連結
されていて、この循環用配管３７は、供給管４および供
給管１３に連結されるとともに、圧力逃がし弁であるコ
ントロール弁３８を介して外部に開口している。FIG. 1 is a schematic configuration diagram of an ash thermal decomposition apparatus according to one embodiment of the present invention. In FIG. 1, an exhaust port provided above an exhaust port of the ash heating device 5 is connected to an inflow side of a filter 22 through an intake pipe 21, and an outflow side of the filter 22 is gas-cooled through an intake pipe 23. It is connected to the inflow side of the vessel 31. On the outflow side of the gas cooler 31, a drain pipe 33 opened in a drain tank 32 and a gas circulation pump 3
4 is connected to the intake pipe 35 connected to the inflow side,
An activated carbon filter 36 is interposed in the intake pipe 35.
A circulation pipe 37 is connected to the outflow side of the gas circulation pump 34. The circulation pipe 37 is connected to the supply pipe 4 and the supply pipe 13, and via a control valve 38 which is a pressure relief valve. Open to the outside.
【００１７】上記構成により、ダイオキシン類などの有
害物質を含有する飛灰は、灰ホッパ１より投入されてバ
ルブ３で調整されつつ灰加熱装置５に送られ、灰加熱装
置５内で酸素不足下、３００℃以上の高温状態たとえば
４００℃に３０分以上保持され、飛灰に化学的、物理的
に吸着した水分や水銀などの低沸点重金属は気相中に蒸
発、揮散し、ダイオキシン類などは熱分解される。この
ようにして有害物質が除去され無害化された飛灰は灰冷
却装置９に送られ、装置９内で１４０℃以下の温度で冷
却された後、灰バンカ１２に蓄えられる。灰加熱装置５
において蒸発、揮散した水銀などの低沸点重金属や未分
解のダイオキシン類などの有害物質を含む熱ガスは、ガ
ス循環ポンプ３４の駆動によって灰加熱装置５の排気口
から吸引され、フィルタ２２で塵などが取り除かれた後
に、ガス冷却器３１に導かれる。そして、ガス冷却器３
１において凝縮した熱ガス中の水分や有害物質を含む凝
縮物は排液管３３によりドレンタンク３２に送られ、タ
ンク３２内に貯留された後に系外へ排出される。一方、
ガス冷却器３１において凝縮しなかったガスは吸気管３
５より活性炭フィルタ３６に導かれ、ガス中に残存する
水銀などの低沸点重金属やダイオキシン類などの有害物
質は活性炭フィルタ３６に充填された活性炭に吸着され
る。With the above structure, the presence of dioxins and the like
Fly ash containing harmful substances is introduced from the ash hopper 1 and
While being adjusted by the lube 3, it is sent to the ash heating device 5 and
In a high-temperature state of 300 ° C. or more under insufficient oxygen in the apparatus 5
Maintained at 400 ° C for more than 30 minutes, chemical and physical to fly ash
Low boiling heavy metals such as moisture and mercury adsorbed on
It emits and volatilizes, and dioxins are thermally decomposed. this
Fly ash from which harmful substances have been removed and detoxified
Sent to the cooling device 9 and cooled in the device 9 at a temperature of 140 ° C. or less.
After being rejected, it is stored in the ash bunker 12. Ash heating device 5
The hot gas containing low-boiling heavy metals such as mercury evaporated and volatilized and harmful substances such as undecomposed dioxins is sucked from the exhaust port of the ash heating device 5 by driving the gas circulation pump 34, Is removed and then guided to the gas cooler 31. And the gas cooler 3
The condensate containing moisture and harmful substances in the hot gas condensed in 1 is sent to a drain tank 32 by a drain pipe 33 and stored in the tank 32 before being discharged out of the system. on the other hand,
The gas not condensed in the gas cooler 31 is supplied to the intake pipe 3
The harmful substances such as low-boiling heavy metals such as mercury and dioxins remaining in the gas are guided by the activated carbon filter 36 and adsorbed on the activated carbon filled in the activated carbon filter 36.
【００１８】ガス冷却器３１と活性炭フィルタ３６を通
過したガスは供給管４より灰加熱装置５へと循環されて
再び熱分解されることになり、未分解のダイオキシン類
などが大気中に放出されることがさらに防止される。ま
た、活性炭フィルタ３６を通過したガスは供給管１３よ
り灰冷却装置９を経て灰加熱装置５に循環されるので、
このときに、飛灰に随伴して灰冷却装置９に至った重金
属やダイオキシン類などの有害物質がいっしょに灰加熱
装置５に戻されることになり、処理が確実になる。吸気
管や循環用配管を含む装置内部の圧力が上昇したとき
は、コントロール弁３８を開いて外部に逃がすことによ
り、異常上昇が防止される。The gas that has passed through the gas cooler 31 and the activated carbon filter 36 is circulated from the supply pipe 4 to the ash heating device 5 to be thermally decomposed again, and undecomposed dioxins and the like are released into the atmosphere. Is further prevented. Further, the gas that has passed through the activated carbon filter 36 is circulated from the supply pipe 13 to the ash heating device 5 via the ash cooling device 9,
At this time, harmful substances such as heavy metals and dioxins that have arrived at the ash cooling device 9 accompanying the fly ash are returned to the ash heating device 5 together, so that the treatment is ensured. When the pressure inside the apparatus including the intake pipe and the circulation pipe rises, the control valve 38 is opened and released to the outside, thereby preventing an abnormal rise.
【００１９】上記したようにして、ガス循環ポンプ３４
で吸引しつつ処理することにより、灰冷却装置９への熱
ガスの移行が抑制されるので、重金属の固着、凝縮によ
る灰冷却装置９の固着トラブルが防止される。また、ガ
ス冷却器３１と活性炭フィルタ３６とにより有害物質を
除去するため、従来の沈殿液を用いる処理で問題であっ
た循環ガス中の水分を原因とする固着トラブルが防止さ
れるとともに、沈殿液の処理が不要になって活性炭フィ
ルタを定期的に取り替えるだけでよいため、保守が容易
になる。As described above, the gas circulation pump 34
Since the transfer of the hot gas to the ash cooling device 9 is suppressed by performing the processing while sucking in the ash cooling device, the sticking trouble of the ash cooling device 9 due to the fixation and condensation of the heavy metal is prevented. In addition, since the harmful substances are removed by the gas cooler 31 and the activated carbon filter 36, the sticking trouble due to the moisture in the circulating gas, which is a problem in the conventional treatment using the sedimentation liquid, is prevented. The maintenance is easy because the process of (1) becomes unnecessary and only the activated carbon filter needs to be periodically replaced.
【００２０】[0020]
【発明の効果】以上のように本発明によれば、加熱手段
において蒸発させた有害物質を含むガスを凝縮手段と濾
過手段に順次通して有害物質を除去し、濾過手段を通過
したガスを加熱手段に循環させる構成としたため、ガス
中に含まれるダイオキシン類や水銀などの低沸点重金属
などの有害物質を効果的に除去してその大気中への放出
を防止できるとともに、従来の循環ガス中の水分を原因
とする固着トラブルを防止できる。また、定期的に濾過
手段を交換するだけでよいため、保守作業が大幅に軽減
される。As described above, according to the present invention, the gas containing the harmful substance evaporated in the heating means is sequentially passed through the condensation means and the filtration means to remove the harmful substance, and the gas which has passed through the filtration means is heated. Circulating means, it is possible to effectively remove harmful substances such as dioxins and low-boiling heavy metals such as mercury contained in the gas to prevent their release into the atmosphere, Sticking trouble caused by moisture can be prevented. Further, maintenance work is greatly reduced because only the filter means needs to be periodically replaced.
【図１】本発明の一実施例の灰加熱分解装置を示した概
略構成図である。FIG. 1 is a schematic configuration diagram showing an ash thermal decomposition apparatus according to one embodiment of the present invention.
【図２】従来の灰加熱分解装置を示した概略構成図であ
る。FIG. 2 is a schematic configuration diagram showing a conventional ash thermal decomposition apparatus.
５ 灰加熱装置 ９ 灰冷却装置 21,23,35 吸気管 31 ガス冷却器 32 ドレンタンク 34 ガス循環ポンプ 36 活性炭フィルタ 37 循環用配管 5 Ash heating device 9 Ash cooling device 21,23,35 Intake pipe 31 Gas cooler 32 Drain tank 34 Gas circulation pump 36 Activated carbon filter 37 Piping for circulation
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−267187（ＪＰ，Ａ) 特開 平６−42724（ＪＰ，Ａ) 特開 平３−122412（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 3/00 302 B09B 3/00 303 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-267187 (JP, A) JP-A-6-42724 (JP, A) JP-A-3-122412 (JP, A) (58) Field (Int.Cl. 7 , DB name) B09B 3/00 302 B09B 3/00 303
Claims (2)
る灰を３００℃以上で加熱処理しダイオキシン類を分解
する加熱手段と、前記加熱手段で加熱処理した灰を冷却
する冷却手段とを有する灰加熱分解装置において、前記
加熱処理で蒸発、揮散した有害物質を含むガスを凝縮さ
せ凝縮物を系外へ排出する凝縮手段と、前記有害物質を
含むガスを吸着濾過し有害物質を除去する濾過手段と、
前記有害物質を含むガスを吸引して前記凝縮手段と前記
濾過手段に順次導く吸引手段と、前記濾過手段を通過し
たガスを前記冷却手段を介してあるいは直接に前記加熱
手段に循環返送する循環返送手段とを備えた灰加熱分解
装置。1. A heating means for heat-treating ash containing harmful substances such as dioxins at 300 ° C. or higher to decompose dioxins, and a cooling means for cooling the ash heat-treated by said heating means. The ash pyrolysis apparatus having
The gas containing harmful substances evaporated and volatilized by the heat treatment is condensed.
Condensing means for discharging condensate to the outside of the system ;
Filtration means for removing harmful substances by adsorption filtration of the gas containing ,
The heating said toxic substances and the condensing means to suck the gas containing successively directing the suction means to said filter means, through said cooling means was a gas passed through the filtering means or directly to the
Ash thermal decomposition apparatus and a circulation return means for circulating back to the unit.
１記載の灰加熱分解装置。2. The ash pyrolysis apparatus according to claim 1, wherein the filtration means is an activated carbon filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06062252A JP3095609B2 (en) | 1994-03-31 | 1994-03-31 | Ash pyrolysis equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06062252A JP3095609B2 (en) | 1994-03-31 | 1994-03-31 | Ash pyrolysis equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07265833A JPH07265833A (en) | 1995-10-17 |
| JP3095609B2 true JP3095609B2 (en) | 2000-10-10 |
Family
ID=13194774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06062252A Expired - Lifetime JP3095609B2 (en) | 1994-03-31 | 1994-03-31 | Ash pyrolysis equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3095609B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3395148B2 (en) | 1998-03-31 | 2003-04-07 | 株式会社豊栄商会 | Soil production method, soil treatment device, treatment method and treatment device |
-
1994
- 1994-03-31 JP JP06062252A patent/JP3095609B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07265833A (en) | 1995-10-17 |
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