JPH03224611A - Method for controlling generation of dioxine - Google Patents
Method for controlling generation of dioxineInfo
- Publication number
- JPH03224611A JPH03224611A JP1997390A JP1997390A JPH03224611A JP H03224611 A JPH03224611 A JP H03224611A JP 1997390 A JP1997390 A JP 1997390A JP 1997390 A JP1997390 A JP 1997390A JP H03224611 A JPH03224611 A JP H03224611A
- Authority
- JP
- Japan
- Prior art keywords
- waste gas
- dioxine
- exhaust gas
- generation
- incinerator
- 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
Links
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims abstract 7
- 238000000034 method Methods 0.000 title claims description 10
- 239000000919 ceramic Substances 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 239000002912 waste gas Substances 0.000 abstract 9
- 239000000463 material Substances 0.000 abstract 1
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 17
- 150000002013 dioxins Chemical class 0.000 description 8
- 239000002699 waste material Substances 0.000 description 6
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、都市ごみ、産業廃棄物などの焼却ないしそ
の排ガス処理に伴うダイオキシンの発生を未然に抑制す
る方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for suppressing the generation of dioxins accompanying the incineration of municipal waste, industrial waste, etc. or the treatment of exhaust gas thereof.
［従来技術およびその問題点コ
ごみ焼却炉などから排出されるダイオキシンは、その生
成過程に不明な点が多いが、焼却炉後流の３００〜２５
０’Ｃ以下の低温域で灰分の存在下に発生することがわ
がってきた。ダイオキシンは、排ガス中には微量しか含
まれていないが、微量でも人体に対し極めて有毒で特に
強い発癌性を示す物質であり、ごみ焼却炉排ガスの新た
な公害問題を引き起こすものとして最近大きくクローズ
アップされつつある。[Prior art and its problems: Dioxins emitted from garbage incinerators, etc., have many unknowns about their formation process, but 300 to 25
It has been found that it occurs in the presence of ash at low temperatures below 0'C. Although dioxins are only contained in trace amounts in exhaust gas, they are extremely toxic to the human body even in trace amounts, and are particularly carcinogenic.Dioxins have recently come under the spotlight as a new pollution problem caused by waste incinerator exhaust gas. It is being done.
従来の排ガス処理方法では、そのフローを第２図に示す
ように、ごみ焼却炉（１）で発生した排ガスは出口から
排出され、ガス冷却器（２）で冷却された後、電気集塵
機（３）で除塵され、ついで煙突（４）から大気中へ放
散される。しかし、この排ガス処理フローではダイオキ
シンはそのまま大気中へ放散されているのが現状である
。In the conventional exhaust gas treatment method, as shown in Figure 2, the exhaust gas generated in the waste incinerator (1) is discharged from the outlet, cooled in the gas cooler (2), and then transferred to the electrostatic precipitator (3). ) and then released into the atmosphere through the chimney (4). However, in this exhaust gas treatment flow, dioxins are currently released into the atmosphere as they are.
この発明は、上記の如き実情に鑑み、都市ごみ、産業廃
棄物などの焼却ないしその排ガス処理に伴うダイオキシ
ンの発生を未然に抑制する方法を提供することを目的と
する。In view of the above-mentioned circumstances, it is an object of the present invention to provide a method for suppressing the generation of dioxins accompanying the incineration of municipal waste, industrial waste, etc. or the treatment of their exhaust gas.
［問題点の解決手段］
この発明によるダイオキシン発生の抑制方法は、上記目
的の達成のために、焼却炉から排出された排ガスを、９
００〜５００℃の温度域で耐熱性フィルタに通し、排ガ
ス中の灰分を除去することを特徴とする特
上記において、耐熱性フィルタは、焼却炉の出口に続く
排ガス排出路における出口直後の部分に設けておくのが
よい。排ガスから灰分を除去する処理を９００〜５００
℃の温度域で行う理由は、９００℃を越えると、灰分の
一部が溶融してフィルタに付着し、フィルタが目詰まり
を起こしたり、完全に閉塞されてしまい、５００℃未満
であるとダイオキシンが発生するおそれがあるからであ
る。耐熱性フィルタとしては。[Means for solving the problem] In order to achieve the above object, the method for suppressing the generation of dioxin according to the present invention reduces the amount of exhaust gas discharged from the incinerator to 90%.
In this special feature, which is characterized in that the ash in the exhaust gas is removed by passing it through a heat-resistant filter in the temperature range of 00 to 500 degrees Celsius, the heat-resistant filter is installed in the part immediately after the exit of the exhaust gas discharge path following the exit of the incinerator. It is good to have one set up. Processing to remove ash from exhaust gas
The reason for this is that if the temperature exceeds 900°C, part of the ash will melt and adhere to the filter, causing the filter to become clogged or completely blocked.If the temperature is below 500°C, dioxin This is because there is a risk that this may occur. As a heat resistant filter.
たとえばセラミック製のものが用いられる。For example, one made of ceramic is used.
口作 用］
この発明によるダイオキシン発生の抑制方法では、ダイ
オキシンの発生に関与する物質である灰分を、ダイオキ
シンが発生することのない高温の９００〜５００℃の温
度域で耐熱性フィルタにより除去する。その結果、ダイ
オキシンの発生が未然に防止せられ、ダイオキシンを含
まない排ガスが大気中に放出される。Oral Effect] In the method for suppressing the generation of dioxin according to the present invention, ash, which is a substance involved in the generation of dioxin, is removed using a heat-resistant filter at a high temperature range of 900 to 500° C. at which dioxin is not generated. As a result, the generation of dioxin is prevented, and exhaust gas containing no dioxin is released into the atmosphere.
［実 施 例コ
つぎに、図示の実施例によりこの発明を具体的に説明す
る。[Embodiments] Next, the present invention will be specifically explained with reference to illustrated embodiments.
第１図にこの発明によるダイオキシン発生の抑制方法の
フローを示す。同図において、ごみ焼却炉（１）の出口
から排出された排ガスは、焼却炉（１）の出口に続いて
設けられた排ガス排出路（５）おける出口直後の部分に
設けられたセラミックフィルタ（７）を備えた集塵機（
６〉に通される。そして、この集塵機（θ）内で天分が
除去される。ついで排ガスは排ガス冷却器（２）で冷却
され、煙突（４）から大気中へ放散される。FIG. 1 shows the flow of the method for suppressing dioxin generation according to the present invention. In the same figure, the exhaust gas discharged from the outlet of the waste incinerator (1) is filtered through a ceramic filter ( 7) Dust collector (
6〉. Then, the talent is removed in this dust collector (θ). The exhaust gas is then cooled in the exhaust gas cooler (2) and released into the atmosphere through the chimney (4).
この排ガス処理フローでは、ダイオキシンの発生に関与
する物質である天分は、耐熱性セラミックフィルタ（７
）によって９００〜５００℃の温度域で除去される。そ
の結果、ダイオキシンの発生が未然に防止せられ、ダイ
オキシンを含まない排ガスが大気中に放出される。In this exhaust gas treatment flow, the heat-resistant ceramic filter (7
) in the temperature range of 900-500°C. As a result, the generation of dioxin is prevented, and exhaust gas containing no dioxin is released into the atmosphere.
なお、従来の方法において、ダイオキシンは、高温にな
るごみ焼却炉内や焼却炉と排ガス冷却器との間の部分か
らはほとんど検出されなかった。従来の方法では、ダイ
オキシンは温度３５０℃付近から生成し始め、３００℃
前後で急増する。特に３００〜２５０℃前後の電気集塵
機内でダイオキシンの生成が顕著であり、電気集塵機が
ダイオキシン生成の温床になっていると考えられる。In addition, in the conventional method, dioxins were hardly detected in the high temperature inside the waste incinerator or in the area between the incinerator and the exhaust gas cooler. In the conventional method, dioxins begin to be produced at a temperature around 350°C, and at a temperature of 300°C.
It increases rapidly before and after. In particular, the production of dioxin is remarkable in the electrostatic precipitator at a temperature of around 300 to 250°C, and it is thought that the electrostatic precipitator is a hotbed for the production of dioxin.
〔発明の効果］
この発明のダイオキシン発生の抑制方法によれば、ダイ
オキシンの発生に関与すると目される天分を、ダイオキ
シンの発生しない温度域である９００〜５００℃の温度
域で除去することができる。その結果、ダイオキシンの
発生を未然に防いで、ダイオキシンを含まない排ガスを
大気中に放出することができる。[Effects of the Invention] According to the method for suppressing dioxin generation of the present invention, it is possible to remove natural substances thought to be involved in the generation of dioxin in a temperature range of 900 to 500°C, which is a temperature range in which dioxin is not generated. can. As a result, it is possible to prevent the generation of dioxin and to release exhaust gas that does not contain dioxin into the atmosphere.
第１図はこの発明の実施例を示す排ガス処理のフローシ
ート、第２図は従来の排ガス処理のフローシートである
。
（１）・・・ごみ焼却炉、（７）・・・耐熱性セラミッ
クフィルタ。
以 上FIG. 1 is a flow sheet for exhaust gas treatment showing an embodiment of the present invention, and FIG. 2 is a flow sheet for conventional exhaust gas treatment. (1)... Garbage incinerator, (7)... Heat resistant ceramic filter. that's all
Claims (1)
度域で耐熱性フィルタに通し、排ガス中の灰分を除去す
ることを特徴とするダイオキシン発生の抑制方法。A method for suppressing the generation of dioxin, which comprises passing exhaust gas discharged from an incinerator through a heat-resistant filter in a temperature range of 900 to 500°C to remove ash in the exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997390A JPH03224611A (en) | 1990-01-29 | 1990-01-29 | Method for controlling generation of dioxine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997390A JPH03224611A (en) | 1990-01-29 | 1990-01-29 | Method for controlling generation of dioxine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03224611A true JPH03224611A (en) | 1991-10-03 |
Family
ID=12014138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1997390A Pending JPH03224611A (en) | 1990-01-29 | 1990-01-29 | Method for controlling generation of dioxine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03224611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04194507A (en) * | 1990-11-28 | 1992-07-14 | Nkk Corp | Method for removing organic chlorine compound of extremely small quantity |
| JP2002213731A (en) * | 2001-01-15 | 2002-07-31 | Babcock Hitachi Kk | Waste incineration treatment system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372319A (en) * | 1986-09-12 | 1988-04-02 | Ebara Corp | Filter for use at high temperature |
-
1990
- 1990-01-29 JP JP1997390A patent/JPH03224611A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372319A (en) * | 1986-09-12 | 1988-04-02 | Ebara Corp | Filter for use at high temperature |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04194507A (en) * | 1990-11-28 | 1992-07-14 | Nkk Corp | Method for removing organic chlorine compound of extremely small quantity |
| JP2002213731A (en) * | 2001-01-15 | 2002-07-31 | Babcock Hitachi Kk | Waste incineration treatment system |
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