JPH11344483A - Method and apparatus for measuring dioxine in combustion exhaust gas - Google Patents
Method and apparatus for measuring dioxine in combustion exhaust gasInfo
- Publication number
- JPH11344483A JPH11344483A JP15120498A JP15120498A JPH11344483A JP H11344483 A JPH11344483 A JP H11344483A JP 15120498 A JP15120498 A JP 15120498A JP 15120498 A JP15120498 A JP 15120498A JP H11344483 A JPH11344483 A JP H11344483A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- dioxin
- monochlorobenzene
- measuring
- gas
- 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.)
- Withdrawn
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は燃焼排ガス中のダイ
オキシン測定方法及び測定装置に関し、特にごみ焼却
炉、産廃焼却炉等からの燃焼排ガス中に含まれるモノク
ロロベンゼンを測定することによりダイオキシン類の排
出濃度を求める，いわゆる間接的測定を行う燃焼排ガス
中のダイオキシン測定方法及び燃料排ガス中のダイオキ
シン測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring dioxin in flue gas, and more particularly to the measurement of dioxin by measuring monochlorobenzene contained in flue gas from waste incinerators, industrial waste incinerators and the like. The present invention relates to a method for measuring dioxin in combustion exhaust gas and a device for measuring dioxin in fuel exhaust gas, which performs a so-called indirect measurement of the concentration.
【０００２】[0002]
【従来の技術】周知の如く、ダイオキシン類の代替指標
物質としては、一酸化炭素（ＣＯ）が一般的に用いられ
ている。また、前駆体物質であるフロロベンゼン類やク
ロロフェノール類はダイオキシン類と高度の相関が知ら
れている。しかしながら、ＣＯについてはダイオキシン
類の低濃度域では相関が乏しく、またクロロベンゼン類
やクロロフェノールはダイオキシン類と分析法がほぼ同
様である（試料抽出→クリーンアーップ→ガスクロマト
グラフ質量分析）ことから、分析結果が出るまで２〜３
週間必要である。2. Description of the Related Art As is well known, carbon monoxide (CO) is generally used as an alternative indicator substance for dioxins. It is known that fluorobenzenes and chlorophenols, which are precursor substances, have a high degree of correlation with dioxins. However, for CO, the correlation is poor in the low concentration range of dioxins, and the analysis results for chlorobenzenes and chlorophenols are almost the same as those for dioxins (sample extraction → cleanup → gas chromatography mass spectrometry). 2-3 until it comes out
Needs a week.
【０００３】[0003]
【発明が解決しようとする課題】本発明はこうした事情
を考慮してなされたもので、クロロベンゼン類のうち比
較的蒸気圧が高いモノクロロベンゼンに着目し、燃焼排
ガス中に含まれるモノクロロベンゼンを測定し、これを
予めダイオキシン類との相関係数からダイオキシン濃度
に換算して燃焼排ガス中のダイオキシンを測定すること
により、従来と比べ迅速にダイオキシンを測定可能な燃
焼排ガス中のダイオキシン測定方法を提供することを目
的とする。SUMMARY OF THE INVENTION The present invention has been made in view of these circumstances, and focuses on monochlorobenzene having a relatively high vapor pressure among chlorobenzenes, and measures monochlorobenzene contained in flue gas. By providing a method for measuring dioxin in combustion exhaust gas by converting this into a dioxin concentration from a correlation coefficient with dioxins in advance and measuring dioxin in combustion exhaust gas, a method for measuring dioxin in combustion exhaust gas can be measured more quickly than before. With the goal.
【０００４】また、本発明は、排ガス中のダストを除去
するフィルターを内蔵し、ダストを除去した排ガスを取
り込む除塵装置と、この除塵装置から取り込まれた排ガ
ス中の水分を除去する前処理装置と、水分が除去された
排ガスを一旦吸着・濃縮し、脱着した後にモノクロロベ
ンゼンを溶出させて定量する吸着管を付帯したガスクロ
マトグラフと、このガスクロマトグラフで定量されたモ
ノクロロベンゼンと予め求めたダイオキシン類との相関
係数からダイオキシン濃度に換算するデータ処理装置と
を具備した構成とすることにより、従来と比べ迅速にダ
イオキシンを測定可能な燃焼排ガス中のダイオキシン測
定装置を提供することを目的とする。Further, the present invention provides a dust removing device incorporating a filter for removing dust in exhaust gas and taking in exhaust gas from which dust has been removed, and a pretreatment device for removing moisture in exhaust gas taken in from the dust removing device. A gas chromatograph equipped with an adsorption tube for adsorbing and concentrating the exhaust gas from which water has been removed once, desorbing and quantifying monochlorobenzene after desorption, and monochlorobenzene quantified by the gas chromatograph and dioxins determined in advance. It is an object of the present invention to provide a device for measuring dioxin in combustion exhaust gas, which is capable of measuring dioxin more quickly than in the past, by including a data processing device for converting a dioxin concentration into a dioxin concentration from the correlation coefficient.
【０００５】[0005]
【課題を解決するための手段】本願第１の発明は、燃焼
排ガス中に含まれるモノクロロベンゼンを測定し、これ
を予めダイオキシン類との相関係数からダイオキシン濃
度に換算して燃焼排ガス中のダイオキシンを測定するこ
とを特徴とする燃焼排ガス中のダイオキシン測定方法で
ある。The first invention of the present application measures monochlorobenzene contained in flue gas and converts it into a dioxin concentration based on a correlation coefficient with dioxins in advance. Is a method for measuring dioxin in combustion exhaust gas.
【０００６】第１の発明において、前記モノクロロベン
ゼンを一旦吸着・濃縮し、ガスクロマトグラフで分離し
た後、光イオン検出器で定量し、予め求めたダイオキシ
ン類との相関係数からダイオキシン濃度に換算すること
が好ましい。In the first invention, the monochlorobenzene is once adsorbed and concentrated, separated by a gas chromatograph, quantified by a photoion detector, and converted into a dioxin concentration from a previously obtained correlation coefficient with dioxins. Is preferred.
【０００７】本願第２の発明は、排ガス中のダストを除
去するフィルターを内蔵し、ダストを除去した排ガスを
取り込む除塵装置と、この除塵装置から取り込まれた排
ガス中の水分を除去する前処理装置と、水分が除去され
た排ガスを一旦吸着・濃縮し、脱着した後にモノクロロ
ベンゼンを溶出させて光イオン検出器で定量する吸着管
を付帯したガスクロマトグラフと、同ガスクロマトグラ
フで定量されたモノクロロベンゼンと予め求めたダイオ
キシン類との相関係数からダイオキシン濃度に換算する
データ処理装置とを具備することを特徴とする燃料排ガ
ス中のダイオキシン測定装置である。[0007] The second invention of the present application is a dust removing device which has a built-in filter for removing dust in exhaust gas and takes in exhaust gas from which dust has been removed, and a pretreatment device which removes moisture in exhaust gas taken in from the dust removing device. And a gas chromatograph with an adsorption tube that once adsorbs and condenses the exhaust gas from which water has been removed, desorbs monochlorobenzene, and quantifies it with a photoion detector, and monochlorobenzene quantified by the gas chromatograph. A data processing device for converting a correlation coefficient with a dioxin obtained in advance into a dioxin concentration.
【０００８】[0008]
【発明の実施の形態】図１は、本発明に係る燃料排ガス
中のダイオキシン測定装置の概略的な図を示す。FIG. 1 is a schematic view of a device for measuring dioxin in fuel exhaust gas according to the present invention.
【０００９】この測定装置は、排ガス中のダストを除去
する除塵フィルターを内蔵し、ダストを除去した排ガス
を取り込む除塵装置１と、この除塵装置１に加熱配管２
を介して接続され、前記除塵装置１から取り込まれた排
ガス中の水分を除去する前処理装置３と、水分が除去さ
れた排ガスを一旦吸着・濃縮し、脱着した後にモノクロ
ロベンゼンを溶出させて定量する吸着管を付帯したガス
クロマトグラフ（ＰＩＤ：光イオン検出器）４と、この
ガスクロマトグラフ４で定量されたモノクロロベンゼン
と予め求めたダイオキシン類との相関係数からダイオキ
シン濃度に換算するデータ処理装置５とを有した構成と
なっている。前記前処理装置３は、図示しない電子クー
ラを内蔵している。This measuring device has a built-in dust removing filter for removing dust in exhaust gas, and a dust removing device 1 for taking in exhaust gas from which dust has been removed.
And a pre-treatment device 3 for removing moisture in the exhaust gas taken in from the dust removal device 1 and once adsorbing / concentrating the exhaust gas from which the moisture has been removed, desorbing and desorbing monochlorobenzene, and quantifying the exhaust gas. Gas chromatograph (PID: photoion detector) 4 having an adsorption tube attached thereto, and a data processing device 5 for converting into a dioxin concentration from a correlation coefficient between monochlorobenzene quantified by the gas chromatograph 4 and a previously obtained dioxin. And a configuration having The pre-processing device 3 has a built-in electronic cooler (not shown).
【００１０】こうした構成の測定装置を用いて、次のよ
うにして燃焼排ガス中のダイオキシンを測定する。即
ち、燃焼排ガス中に含まれるモノクロロベンゼンを一端
吸着・濃縮し、光イオン検出器４で定量し、これを予め
ダイオキシン類との相関係数からダイオキシン濃度に換
算することにより、燃焼排ガス中のダイオキシン類濃度
を高頻度間欠（１回／３０分以内）にかつ自動（無人）
で測定できる。The dioxin in the flue gas is measured as follows using the measuring device having the above-mentioned configuration. That is, monochlorobenzene contained in the combustion exhaust gas is once adsorbed and concentrated, quantified by the photoion detector 4, and converted to a dioxin concentration from a correlation coefficient with dioxins in advance, thereby obtaining dioxin in the combustion exhaust gas. Automatically (unmanned) with high frequency intermittent (one time / within 30 minutes)
Can be measured.
【００１１】[0011]
【実施例】以下、本発明の一実施例について説明する。An embodiment of the present invention will be described below.
【００１２】排ガス中のダストは予め除塵フィルターで
除去した。ここで、除塵フィルターは飛灰の堆積により
ダイオキシン類の再合成の問題があるので、外部空気に
より間欠パージ仕様とした。除塵された排ガスは、１０
０〜１５０℃にコントロールされた加熱金属配管（ＳＵ
Ｓ３０４等）によって水分凝縮を防止した後、前処理装
置３で排ガス中の水分を除去した。次に、その排ガスを
開閉弁を介して０．１〜１リットル／ｍｉｎの速度で３
０秒〜３分間濃縮し、約１分間で加熱脱着後、キャピラ
リーカラムで約７分後にモノクロロベンゼンを溶出さ
せ、光イオン検出器４で定量した。The dust in the exhaust gas was removed by a dust filter in advance. Here, the dust filter has a problem of resynthesis of dioxins due to accumulation of fly ash. Exhausted exhaust gas is 10
Heated metal piping controlled at 0-150 ° C (SU
After preventing water condensation by S304), the water in the exhaust gas was removed by the pretreatment device 3. Next, the exhaust gas is passed through an on-off valve at a rate of 0.1 to 1 liter / min.
After concentrating for 0 seconds to 3 minutes, heating and desorbing for about 1 minute, monochlorobenzene was eluted after about 7 minutes with a capillary column, and quantified by the photoion detector 4.
【００１３】その分析例は、図２に示す通りである。図
２より、エチルベンゼン、ｐ−キレン、ｍ−キレン、ｏ
−キレン、クロロベンゼンのピークが確認された。その
結果をデータ処理装置で予め求めたダイオキシン類との
相関係数からダイオキシン濃度に換算する。An example of the analysis is as shown in FIG. FIG. 2 shows that ethylbenzene, p-alkylene, m-alkylene, o
-Peaks of kylene and chlorobenzene were confirmed. The result is converted into a dioxin concentration from a correlation coefficient with dioxins previously obtained by a data processing device.
【００１４】図３は、実ガスで得られたモノクロロベン
ゼンとダイオキシン類の相関関係図を示す。図３におい
て、横軸はモノクロロベンゼン濃度［ｎｇ／ｍ3 Ｎ］
（Ｏ212％換算値）を示し、縦軸はダイオキシン濃度
［ｎｇ−ＴＥＱ／ｍ3 Ｎ］を示す。以上の測定手順によ
り、約１回／３０分以内で排ガス中のダイオキシン濃度
の測定が自動（無人）で検出できる。FIG. 3 is a diagram showing the correlation between monochlorobenzene and dioxins obtained from real gas. In FIG. 3, the horizontal axis represents the concentration of monochlorobenzene [ng / m 3 N].
(O 2 12% conversion value), and the vertical axis indicates dioxin concentration [ng-TEQ / m 3 N]. According to the above measurement procedure, the measurement of the dioxin concentration in the exhaust gas can be detected automatically (unmanned) within about once / 30 minutes.
【００１５】[0015]
【発明の効果】以上詳述したように本発明によれば、ク
ロロベンゼン類のうち比較的蒸気圧が高いモノクロロベ
ンゼンに着目し、燃焼排ガス中に含まれるモノクロロベ
ンゼンを測定し、これを予めダイオキシン類との相関係
数からダイオキシン濃度に換算して燃焼排ガス中のダイ
オキシンを測定することにより、従来と比べ迅速にダイ
オキシンを測定可能な燃焼排ガス中のダイオキシン測定
方法及び測定装置を提供できる。As described above in detail, according to the present invention, monochlorobenzene having a relatively high vapor pressure among chlorobenzenes is focused on, monochlorobenzene contained in the combustion exhaust gas is measured, and this is measured in advance for dioxins. By measuring the dioxin in the combustion exhaust gas by converting the dioxin concentration from the correlation coefficient with the dioxin concentration, a dioxin measurement method and a measurement device in the combustion exhaust gas capable of measuring dioxin more quickly than before can be provided.
【図１】本発明に係る燃料排ガス中のダイオキシン測定
装置の概略的な図。FIG. 1 is a schematic diagram of a device for measuring dioxin in fuel exhaust gas according to the present invention.
【図２】ガスクロマトグラフによる分析データを示す特
性図。FIG. 2 is a characteristic diagram showing analysis data by gas chromatography.
【図３】実ガスで得られたモノクロロベンゼンとダイオ
キシン類の相関関係図。FIG. 3 is a diagram showing the correlation between monochlorobenzene and dioxins obtained with a real gas.
１…除塵装置、 ２…加熱配管、 ３…前処理装置 ４…ガスクロマトグラフ（光イオン検出器）、 ５…データ処理装置。 DESCRIPTION OF SYMBOLS 1 ... Dust removal device, 2 ... Heating pipe, 3 ... Pretreatment device 4 ... Gas chromatograph (photoion detector), 5 ... Data processing device.
Claims (3)
ゼンを測定し、これを予めダイオキシン類との相関係数
からダイオキシン濃度に換算して燃焼排ガス中のダイオ
キシンを測定することを特徴とする燃焼排ガス中のダイ
オキシン測定方法。1. A method for measuring dioxin in flue gas, comprising measuring monochlorobenzene contained in the flue gas, converting it into a dioxin concentration from a correlation coefficient with dioxins in advance, and measuring dioxin in the flue gas. Dioxin measurement method.
縮し、ガスクロマトグラフで分離した後、光イオン検出
器で定量し、予め求めたダイオキシン類との相関係数か
らダイオキシン濃度に換算することを特徴とする請求項
１記載の燃焼排ガス中のダイオキシン測定方法。2. The monochlorobenzene is once adsorbed and concentrated, separated by gas chromatography, quantified by a photoion detector, and converted into a dioxin concentration from a previously obtained correlation coefficient with dioxins. The method for measuring dioxin in combustion exhaust gas according to claim 1.
を内蔵し、ダストを除去した排ガスを取り込む除塵装置
と、この除塵装置から取り込まれた排ガス中の水分を除
去する前処理装置と、水分が除去された排ガスを一旦吸
着・濃縮し、脱着した後にモノクロロベンゼンを溶出さ
せて定量する吸着管を付帯したガスクロマトグラフと、
このガスクロマトグラフで定量されたモノクロロベンゼ
ンと予め求めたダイオキシン類との相関係数からダイオ
キシン濃度に換算するデータ処理装置とを具備すること
を特徴とする燃料排ガス中のダイオキシン測定装置。3. A dust removing device incorporating a filter for removing dust in exhaust gas, for taking in exhaust gas from which dust has been removed, a pretreatment device for removing moisture in exhaust gas taken in from the dust removing device, and removing moisture. A gas chromatograph equipped with an adsorption tube for once adsorbing and concentrating the exhausted gas, desorbing and quantifying monochlorobenzene after desorption,
A device for measuring dioxin in fuel exhaust gas, comprising: a data processing device for converting the monochlorobenzene quantified by the gas chromatograph into a dioxin concentration based on a previously obtained correlation coefficient between dioxins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15120498A JPH11344483A (en) | 1998-06-01 | 1998-06-01 | Method and apparatus for measuring dioxine in combustion exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15120498A JPH11344483A (en) | 1998-06-01 | 1998-06-01 | Method and apparatus for measuring dioxine in combustion exhaust gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11344483A true JPH11344483A (en) | 1999-12-14 |
Family
ID=15513524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15120498A Withdrawn JPH11344483A (en) | 1998-06-01 | 1998-06-01 | Method and apparatus for measuring dioxine in combustion exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11344483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015222222A (en) * | 2014-05-23 | 2015-12-10 | いすゞ自動車株式会社 | Method of collecting exhaust gas component by use of on-line derivatization |
-
1998
- 1998-06-01 JP JP15120498A patent/JPH11344483A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015222222A (en) * | 2014-05-23 | 2015-12-10 | いすゞ自動車株式会社 | Method of collecting exhaust gas component by use of on-line derivatization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20050802 |