JPH049461B2 - - Google Patents
Info
- Publication number
- JPH049461B2 JPH049461B2 JP59162809A JP16280984A JPH049461B2 JP H049461 B2 JPH049461 B2 JP H049461B2 JP 59162809 A JP59162809 A JP 59162809A JP 16280984 A JP16280984 A JP 16280984A JP H049461 B2 JPH049461 B2 JP H049461B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- water
- dust
- ejector
- wall
- 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
- 239000007789 gas Substances 0.000 claims description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 239000000428 dust Substances 0.000 claims description 30
- 238000005070 sampling Methods 0.000 claims description 30
- 239000000523 sample Substances 0.000 claims description 21
- 238000010926 purge Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000008237 rinsing water Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
- G01N2001/2261—Sampling from a flowing stream of gas in a stack or chimney preventing condensation (heating lines)
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ダストまたはダスト及び蒸気が多く
含まれている燃焼排ガスのガス分析装置に用いる
湿式ガスサンプリング装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wet gas sampling device used in a gas analysis device for combustion exhaust gas containing dust or a large amount of dust and steam.
（従来の技術）
従来の水エゼクターを用いた湿式ガスサンプリ
ング装置は、第４図に示される様にボイラーの煙
道や各種熱処理炉の炉壁にガスサンプリング用プ
ローブ１を設置し、水エゼクター３のガス吸引能
力を利用してプローブ１よりガス導管２を通して
水エゼクターまで炉内排ガスを吸引する湿式ガス
サンプリング装置が用いられている。(Prior art) As shown in Fig. 4, a conventional wet gas sampling device using a water ejector has a gas sampling probe 1 installed in the flue of a boiler or the furnace wall of various heat treatment furnaces, and a water ejector 3. A wet gas sampling device is used which sucks in-furnace exhaust gas from a probe 1 through a gas conduit 2 to a water ejector by utilizing the gas suction ability of the gas sampling device.
（発明が解決しようとする問題点）
しかし、この様な湿式ガスサンプリング装置で
は(1)サンプリングガス中にダストまたはダスト及
び蒸気が多く含まれている場合、水エゼクター３
におけるエゼクター駆動用の水の一部がガス導管
２の内壁に飛散し、この飛散した水にダストが付
着してガス導管２の内部が閉塞され、ガスサンプ
リングが出来なくなる。(2)サンプリングガス中に
ダスト及び蒸気が多く含まれている場合、プロー
ブ１やガス導管２の通過過程でサンプルガスが露
点温度以下に冷却されてプローブ１やガス導管２
の内壁部に結露し、この結露液にダストが付着し
てプローブ１やガス導管２の内部が閉塞され、ガ
スサンプリングが出来なくなる。等の問題があ
る。(Problems to be Solved by the Invention) However, in such a wet gas sampling device, (1) when the sampling gas contains dust or a large amount of dust and steam, the water ejector 3
A part of the water for driving the ejector is scattered on the inner wall of the gas conduit 2, and dust adheres to the scattered water, blocking the inside of the gas conduit 2 and making gas sampling impossible. (2) If the sampling gas contains a large amount of dust and vapor, the sample gas may be cooled to below the dew point temperature during the passage through the probe 1 or the gas pipe 2, causing the sample gas to
Dew condenses on the inner wall of the dew, and dust adheres to this condensed liquid, clogging the inside of the probe 1 and gas conduit 2, making gas sampling impossible. There are other problems.
（問題点を解決するための構成）
本発明は、従来のこの様な問題点を解決するた
めになされたものであり、定期的に簡易な保守を
実施するだけでダストによる閉塞を防止出来るサ
ンプリング装置を提供することを目的とする。(Configuration for Solving Problems) The present invention has been made to solve these conventional problems, and is a sampling system that can prevent blockage due to dust by simply performing simple maintenance on a regular basis. The purpose is to provide equipment.
この目的を達成するために本発明のガスサンプ
リング装置は、ガスサンプリング用のガス導管に
水エゼクターを連結した湿式ガスサンプリング装
置において、前記ガス導管およびプローブを加熱
保温する加熱保温器を設けるとともに、前記ガス
導管内部にガス導管内部を間欠的にエアーパージ
するポージ口を設け、さらに前記ガス導管と水エ
ゼクターとの間にダスト付着防止用の水洗器を設
け、該水洗器はその外壁に設けた水洗水を内部へ
導入するため水洗水入口とその内壁に設けた均一
の高さの水溜用の囲いとを有し、ガスサンプリン
グ時に、水洗器の内壁に亘つて水洗用の水を連続
的に流すようにしたことを特徴とするものであ
る。 In order to achieve this object, the gas sampling device of the present invention is a wet gas sampling device in which a water ejector is connected to a gas pipe for gas sampling, and is provided with a heating insulator that heats and keeps the gas pipe and the probe warm. A purge port is provided inside the gas pipe for intermittently air purging the inside of the gas pipe, and a water washer is provided between the gas pipe and the water ejector to prevent dust from adhering to the water ejector. In order to introduce water into the interior, there is a rinsing water inlet and a water reservoir enclosure of uniform height installed on the inner wall of the rinsing water inlet, and during gas sampling, the rinsing water is continuously flowed over the inner wall of the rinsing device. It is characterized by the following.
（実施例）
本発明に更に詳しい構成を一具体例を示す第１
図に基いて説明すれば、プローブ１は先端１Ａが
炉内に後端１Ｂが炉外に位置する様炉壁５に設置
される。プローブ後端１Ｂはガス導管２な接続さ
れる。ガス導管２は分岐され一方の端が水洗器４
のガス入口４Ａに接続された他方の端がパージ口
６に接続されておりまた水洗器４のガス出口４Ｂ
はエゼクター３に接続されている。炉壁５外に位
置するプローブ１およびガス導管２の外周はヒー
タ７および断熱材８で覆われ内部の温度をサンプ
ルガスの露点温度以下とならない様加熱保温され
ている。水洗器４は、水洗水入口４Ｃを有し内部
には水溜用の囲い４Ｄが均一の高さに設置され、
水洗器の内壁に亘つて全周を均一に水が流れる様
構成されている。エゼクター３は駆動水を駆動水
入口３Ａに送入することにより駆動され、サンプ
ルガスは、プローブ１、ガス導管２、水洗器４を
経由してエゼクター３に至り駆動水および水洗水
とともにエゼクター３の駆動水出口３Ｂより外部
へ送付される。(Example) A first example showing a more detailed configuration of the present invention
To explain based on the figure, the probe 1 is installed on the furnace wall 5 such that the tip 1A is located inside the furnace and the rear end 1B is located outside the furnace. The probe rear end 1B is connected to a gas conduit 2. The gas pipe 2 is branched and one end is connected to the water washer 4.
The other end connected to the gas inlet 4A of the washer 4 is connected to the purge port 6, and the other end is connected to the gas outlet 4B of the water washer 4.
is connected to ejector 3. The outer peripheries of the probe 1 and the gas conduit 2 located outside the furnace wall 5 are covered with a heater 7 and a heat insulating material 8, and are heated and kept warm so that the internal temperature does not fall below the dew point temperature of the sample gas. The washing machine 4 has a washing water inlet 4C, and a water reservoir enclosure 4D is installed at a uniform height inside.
The water washer is constructed so that water flows uniformly all around the inner wall. The ejector 3 is driven by supplying driving water to the driving water inlet 3A, and the sample gas reaches the ejector 3 via the probe 1, gas conduit 2, and water washer 4, and enters the ejector 3 together with the driving water and washing water. The driving water is sent to the outside from the driving water outlet 3B.
以上の様に構成されたガスサンプリング装置で
は、たとえばサンプリングとともにダストが吸引
されたとしても
(1) 炉壁５外に位置するプローブ１およびガス導
管２の内部は、ヒータ７および断熱材８でサン
プルガスの露点温度以下にならない様に加熱保
温されているために結露によりプローブ１およ
びガス導管２の内壁にダストが固着することは
なく、たとえダストが内壁に付着してもそのダ
ストは乾燥状態であるためパージ口より定期的
にエアパージするだけでプローブ先端１Ａより
ダストを炉内に吹き出して除去できる。 In the gas sampling device configured as described above, even if dust is sucked in together with the sampling, (1) the inside of the probe 1 and gas conduit 2 located outside the furnace wall 5 is heated by the heater 7 and the heat insulating material 8; Since the gas is heated and kept warm so that the temperature does not drop below the dew point temperature of the gas, dust will not stick to the inner walls of the probe 1 and gas conduit 2 due to dew condensation, and even if dust adheres to the inner walls, it will remain dry. Therefore, dust can be blown out from the probe tip 1A into the furnace and removed simply by periodically air purging from the purge port.
(2) 水洗器に侵入したダストは水洗水が常時水洗
器の全面に亘つて流れているため付着すること
なくエゼクター３をへて外部に送付される。こ
のためエゼクター駆動水の飛水によるダスト付
着が防止できる。(2) The dust that has entered the washer is sent to the outside through the ejector 3 without adhering to it because the washing water is constantly flowing over the entire surface of the washer. Therefore, dust adhesion due to splashing of ejector drive water can be prevented.
第２図および第３図に示される従来技術のサン
プリング装置と本発明のサンプリング装置を用い
てダストまたはダスト及び蒸気の多い燃焼排ガス
中の酸素濃度を分析した場合の比較において、従
来技術では第２図に示す如く分析開始後８時間で
ガス導管２の内壁にダストが附着し始め燃焼排ガ
スの吸引状態が悪くなり燃焼排ガス中のO2濃度
は殆んど一定でも分析装置の指示値は次第に高く
なつた。これに対し本発明では第３図に示す如く
１回／１日の頻度でエアパージをするだけで分析
装置の指示値は安定しており、ダスト付着に起因
するプローブ及びガス導管内部さらに水洗器内部
の閉塞は生じていない。 In a comparison between the sampling device of the prior art shown in FIGS. 2 and 3 and the sampling device of the present invention used to analyze the oxygen concentration in dust or combustion exhaust gas containing a lot of dust and steam, it was found that As shown in the figure, 8 hours after the start of the analysis, dust begins to adhere to the inner wall of the gas conduit 2, making the suction condition of the flue gas worse, and even though the O 2 concentration in the flue gas remains almost constant, the value indicated by the analyzer gradually increases. Summer. On the other hand, in the present invention, as shown in Figure 3, the indicated value of the analyzer is stabilized by simply performing air purge once a day. No blockage has occurred.
（効果）
以上述べたとおり本発明のガスサンプリング装
置はダストまたはダスト及び蒸気が多く含まれて
いるサンプリングガスでもプローブ及びガス導管
内部をさらに水洗器内部でのダスト付着に起因す
る閉塞を生じることなく長期間安定してガスサン
プリング出来るものであり工業上極めて有用なも
のである。(Effects) As described above, the gas sampling device of the present invention prevents the inside of the probe and gas conduit from being clogged due to dust adhesion inside the water washer even when the sampling gas contains dust or a large amount of dust and steam. It allows stable gas sampling over a long period of time and is extremely useful industrially.
第１図は本発明のガスサンプリング装置の一具
体例を模式的に示す説明図、第２図は従来技術の
ガスサンプリング装置を用いてダストまたはダス
ト及び蒸気の多い燃焼排ガス中の酸素濃度を計測
した場合の分析計の指示値を推移を示す説明図、
第３図は本発明のガスサンプリング装置を用いて
ダストまたはダスト及び蒸気の多い燃焼排ガス中
の酸素濃度を計測した場合の分析計の指示値の推
移を示す説明図、第４図は従来のガスサンプリン
グ装置の一具体例を模式的に示す説明図である。
１……プローブ、１Ａ……プローブ先端、１Ｂ
……プローブ後端、２……ガス導管、３……エゼ
クター、３Ａ……駆動水入口、３Ｂ……駆動水出
口、４……水洗器、４Ａ……ガス入口、４Ｂ……
ガス出口、４Ｃ……水洗水入口、４Ｄ……囲い、
５……炉壁、６……パージ口、７……ヒータ、８
……断熱材。
Fig. 1 is an explanatory diagram schematically showing a specific example of the gas sampling device of the present invention, and Fig. 2 is a diagram showing the measurement of oxygen concentration in dust or combustion exhaust gas containing a lot of dust and steam using a conventional gas sampling device. An explanatory diagram showing the transition of the indicated value of the analyzer when
Fig. 3 is an explanatory diagram showing the transition of the indicated value of the analyzer when measuring the oxygen concentration in dust or combustion exhaust gas containing a lot of dust and steam using the gas sampling device of the present invention, and Fig. 4 is an explanatory diagram showing the transition of the indicated value of the analyzer when the oxygen concentration in dust or combustion exhaust gas containing a lot of dust and steam is measured using the gas sampling device of the present invention. FIG. 2 is an explanatory diagram schematically showing a specific example of a sampling device. 1...Probe, 1A...Probe tip, 1B
...Probe rear end, 2...Gas conduit, 3...Ejector, 3A...Driving water inlet, 3B...Driving water outlet, 4...Water washer, 4A...Gas inlet, 4B...
Gas outlet, 4C...rinsing water inlet, 4D...enclosure,
5... Furnace wall, 6... Purge port, 7... Heater, 8
...Insulation material.
Claims (1)
ーを連結した湿式ガスサンプリング装置におい
て、前記ガス導管およびプローブを加熱保温する
加熱保温器を設けるとともに、前記ガス導管内部
にガス導管内部を間欠的にエアーパージするパー
ジ口を設け、さらに前記ガズ導管と水エゼクター
との間にダスト付着防止用の水洗器を設け、該水
洗器はその外壁に設けた水洗水を内部へ導入する
ため水洗水入口とその内壁に設けた均一の高さの
水溜用の囲いとを有し、ガスサプリング時に、水
洗器の内壁に亘つて水洗用の水を連続的に流すよ
うにしたことを特徴とするダストまたはダスト及
び蒸気の多いガス用のガスサンプリング装置。1. In a wet gas sampling device in which a water ejector is connected to a gas conduit for gas sampling, a heating insulator is provided to heat and keep the gas conduit and probe warm, and the inside of the gas conduit is intermittently air purged. A purge port is provided, and a water washer for preventing dust adhesion is provided between the gas conduit and the water ejector, and the water washer has a washing water inlet and a water washer provided on the inner wall of the water ejector in order to introduce the washing water provided on the outer wall into the interior. Dust or dust and steam characterized by having a water reservoir enclosure of a uniform height provided therein, so that water for rinsing continuously flows over the inner wall of the rinsing device when gas is supplied. Gas sampling device for gases with a large amount of gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16280984A JPS6141943A (en) | 1984-08-03 | 1984-08-03 | Gas sampling device for dust or gas containing much dust and vapor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16280984A JPS6141943A (en) | 1984-08-03 | 1984-08-03 | Gas sampling device for dust or gas containing much dust and vapor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6141943A JPS6141943A (en) | 1986-02-28 |
| JPH049461B2 true JPH049461B2 (en) | 1992-02-20 |
Family
ID=15761631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16280984A Granted JPS6141943A (en) | 1984-08-03 | 1984-08-03 | Gas sampling device for dust or gas containing much dust and vapor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632553Y2 (en) * | 1990-09-17 | 1994-08-24 | 未来工業株式会社 | Fluid pipe terminal connector |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0471146U (en) * | 1990-10-31 | 1992-06-24 | ||
| JPH0479245U (en) * | 1990-11-26 | 1992-07-10 | ||
| CN101975762B (en) * | 2010-11-03 | 2012-11-07 | 煤炭科学研究总院重庆研究院 | Gas sensitive element anti-condensation method and device |
| CN105675356A (en) * | 2016-03-22 | 2016-06-15 | 湖南大唐节能科技有限公司 | Flue gas asymmetric sampling device |
| CN107589054A (en) * | 2017-09-01 | 2018-01-16 | 中煤科工集团重庆研究院有限公司 | A kind of dust concentration testing agency based on β radiation absorptions, system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834192A (en) * | 1971-09-09 | 1973-05-16 | ||
| JPS5370896A (en) * | 1976-12-07 | 1978-06-23 | Hitachi Ltd | Sampling apparatus for continuous gas analysis |
-
1984
- 1984-08-03 JP JP16280984A patent/JPS6141943A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4834192A (en) * | 1971-09-09 | 1973-05-16 | ||
| JPS5370896A (en) * | 1976-12-07 | 1978-06-23 | Hitachi Ltd | Sampling apparatus for continuous gas analysis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632553Y2 (en) * | 1990-09-17 | 1994-08-24 | 未来工業株式会社 | Fluid pipe terminal connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6141943A (en) | 1986-02-28 |
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