JPS62116232A - Apparatus for cleaning filter for gas sampler - Google Patents
Apparatus for cleaning filter for gas samplerInfo
- Publication number
- JPS62116232A JPS62116232A JP25603185A JP25603185A JPS62116232A JP S62116232 A JPS62116232 A JP S62116232A JP 25603185 A JP25603185 A JP 25603185A JP 25603185 A JP25603185 A JP 25603185A JP S62116232 A JPS62116232 A JP S62116232A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- filter
- purge
- purge gas
- outlet
- 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
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ガス採取器用フィルタの清浄装置に関し、特
に酸素吹込転炉における排ガス分析装置等に用いられて
いるガス採取器においてフィルタの目詰りを防止するた
めの清浄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 cleaning device for a filter for a gas sampling device, and in particular, to prevent clogging of the filter in a gas sampling device used in an exhaust gas analyzer in an oxygen-blown converter. This invention relates to a cleaning device for preventing.
酸素吹込転炉において、吹錬中に発生する転炉排ガスは
、第３図に示すように転炉３１の開口部に被せたスカー
ト付きフード３２で捕集され、煙道３３を通り、ボイラ
ー３４、サチュレータ３５、集塵装置３６、ガス流量計
３７等を経て、三方切換弁３８で煙突３９とホルダーの
いずれかに送られ、大気中に放出されるか、若しくは副
生ガスとして回収されるように構成されている。副生ガ
スとして回収するかどうかを判定する基準は、煙道３３
中の排ガス成分（Ｃｏ及びＯｘ）が一定基準値内である
か否かによって決定され、排ガス成分値を検出するため
のガス分析装置４０が煙道３３中に配設され、その検出
結果に応じて三方切換弁３８を切換えるように構成され
ている。In the oxygen-blown converter, converter exhaust gas generated during blowing is collected by a skirted hood 32 placed over the opening of the converter 31, as shown in FIG. , a saturator 35, a dust collector 36, a gas flow meter 37, etc., and is sent to either a chimney 39 or a holder by a three-way switching valve 38, and is either released into the atmosphere or recovered as a by-product gas. It is composed of The criteria for determining whether to collect it as a by-product gas is the flue 33
A gas analyzer 40 is disposed in the flue 33 to detect the exhaust gas component values, and depending on the detection result, the The three-way switching valve 38 is configured to be switched by the three-way switching valve 38.
ガス分析装置４０は、第４図に示すように、煙道３３中
に臨ませて配設されたガス採取器４１でガスを採取し、
吸引ポンプ４３で吸引し、その一部を試料ガスとしてフ
ィルタ４４等を介して分析計４５に送り込むように構成
されている。前記ガス採取器４１には焼結金属、金網等
を素材としたフィルタ４２が取付けられ、排ガス中に含
まれているダストを除去し、ダストが侵入しないように
なっている。As shown in FIG. 4, the gas analyzer 40 collects gas with a gas sampler 41 disposed facing into the flue 33.
It is configured to suction with a suction pump 43 and send a part of it as a sample gas to an analyzer 45 via a filter 44 and the like. A filter 42 made of sintered metal, wire mesh, or the like is attached to the gas sampling device 41 to remove dust contained in the exhaust gas and prevent dust from entering.
このフィルタ４２に付着したダストは、４〜５ｋｇ／ｃ
ｄのＮ２ガスボンベなどのパージ用ガス源５１からガス
採取器４１のフィルタ４２内側とフィルタ４２外側にそ
れぞれ自動弁５２ａ・５２ｂを介してパージ用ガスを供
給するように構成された清浄装置５０にて清浄にされる
。なお、フィルタ４２の外側に対してばパージ配管５３
ｂが直接配管され、フィルタ４２の内側に対してはパー
ジ配管５３ａが採取ガス管４６の途中に接続され、採取
ガス管４６のパージ配管５３ａとの接続部より下流側に
は自動弁４７が配設され、Ｎ２ガスが吸引ポンプ４３側
に流入しないようにされている。The amount of dust attached to this filter 42 is 4 to 5 kg/c.
In the cleaning device 50 configured to supply purge gas from a purge gas source 51 such as an N2 gas cylinder in d to the inside of the filter 42 and the outside of the filter 42 of the gas sampling device 41 via automatic valves 52a and 52b, respectively. be made clean. Note that the purge pipe 53 is connected to the outside of the filter 42.
b is directly piped, a purge pipe 53a is connected to the inside of the filter 42 in the middle of the sampling gas pipe 46, and an automatic valve 47 is arranged downstream from the connection part of the sampling gas pipe 46 with the purge pipe 53a. is provided to prevent N2 gas from flowing into the suction pump 43 side.
この清浄装置５０の作動は、第２図（ａ）（ｂ）に示す
ように転炉の非吹錬期間に自動弁５２ａ・５２ｂを交互
に開き、パージ用ガスを試料ガスの採取方向とは逆にフ
ィルタ４２の内側と外側から交互に流してダストを吹き
落とすようにされている。As shown in FIGS. 2(a) and 2(b), the purifying device 50 operates by alternately opening the automatic valves 52a and 52b during the non-blowing period of the converter, and directing the purge gas in the direction in which the sample gas is sampled. On the contrary, the dust is blown off by alternately flowing from the inside and outside of the filter 42.
しかしながら、かかる構成では、初期パージ時の比較的
ガス圧力の高い期間しか大きな清浄効果が得られず、吹
錬回数を増す毎にダストによるフィルタの目詰まりが進
行し、第５図に示すように分析計への試料ガス量が徐々
に減少する。その結果、第６図に示すように、試料ガス
量の減少によりガスサンプリング系の応答性が低下し、
極端にフィルタ４２の目詰まりが進行すると、最後には
分析値が変化しな（なるといった状態になる。このこと
は、第７図の吹錬時におけるガス濃度の変化と回収開始
タイミングを示す図から明らかなように、実線で示すよ
うにＡ点で回収を開始すべきところが、Ｂ点で回収を開
始することになり、このためガス回収率の低下を招くと
いう問題があった。However, with this configuration, a large cleaning effect can only be obtained during the period when the gas pressure is relatively high during the initial purge, and as the number of blowing increases, the filter becomes clogged with dust, as shown in FIG. The amount of sample gas to the analyzer gradually decreases. As a result, as shown in Figure 6, the response of the gas sampling system decreases due to the decrease in the amount of sample gas.
If the filter 42 becomes extremely clogged, the analysis value will eventually not change. As is clear from the figure, as shown by the solid line, recovery should start at point A, but instead started at point B, which caused the problem of lowering the gas recovery rate.
本発明は、上記従来の問題点を解消するためになされた
ものであって、フィルタに付着したダストを短時間に効
果的に除去でき、ガス回収率の低下を抑制できるガス採
取器用フィルタの清浄装置の提供を目的とするものであ
る。The present invention has been made to solve the above-mentioned conventional problems, and is a cleaning method for a filter for a gas sampling device that can effectively remove dust attached to the filter in a short time and suppress a decrease in gas recovery rate. The purpose is to provide equipment.
本発明にかかるガス採取器用フィルタの清浄装置は、パ
ージ用ガス源からガス採取器にパージ用ガスを供給する
パージ配管の途中にバッファタンクを設け、パージ配管
の出口をガス採取器の出口部とガス採取器のフィルタ外
周部で開口させるとともに、それらの出口近傍位置に自
動弁を配設し、各自動弁を交互に所定時間づつ且つそれ
ぞれの所定時間内でパルス状に開閉するように制御し得
る制御装置を設け、バッファタンクによりパージ時の元
圧低下を抑制するとともに自動弁をパージ配管の出口近
傍位置に配置して圧力損失を低減させ、かつパージ用ガ
スをパルス状に流してガスの突出時のエネルギーを効果
的に利用するようにしたことを特徴とするものである。The cleaning device for a filter for a gas sampling device according to the present invention includes a buffer tank provided in the middle of a purge piping that supplies purge gas from a purge gas source to a gas sampling device, and an outlet of the purge piping connected to an outlet of the gas sampling device. The filters are opened at the outer periphery of the gas sampling device, and automatic valves are arranged near their outlets, and each automatic valve is controlled to open and close alternately at a predetermined time and in a pulsed manner within each predetermined time. A buffer tank is used to suppress the drop in source pressure during purging, an automatic valve is placed near the outlet of the purge piping to reduce pressure loss, and the purge gas is flowed in pulses to control the gas flow. The feature is that the energy at the time of protrusion is effectively utilized.
以下、本発明の一実施例を第１図及び第２図に基づいて
説明する。転炉排ガスの煙道に臨むようにガス採取器１
が配置され、その内部にフィルタ２が配設されている。Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2. Gas sampling device 1 facing the converter flue gas flue
is arranged, and a filter 2 is arranged inside it.
フィルタ２を通過した排ガスはガス採取器ｌの出口部１
ａから自動弁４、フィルタ５を介装した採取ガス管３を
経てポンプ６で吸引され、さらに自動弁７ａ、手動弁７
ｂ及び流量計７０を備えたバイパス管７と、自動弁８ａ
、手動弁８ｂ及び流量計８０を備えた試料ガス管８とに
分岐され、試料ガス管８にフィルタ９と分析計１０が配
設されている。Ｎｔガスボンベなどのパージ用ガス源１
１からパージ配管１２がガス採取器１に向かって延出さ
れ、その途中に圧力計１６が配置されている。このパー
ジ配管１２は出口近傍で分岐されて、一方はガス採取器
１の出口部１ａで採取ガス管３に接続され、他方はガス
採取器１のフィルタ２外周に配設されたケースｌｂ内に
開口され、それぞれの分岐路に自動弁１３ａ・１３ｂが
配設されている。また、パージ配管Ｉ２の分岐部の手前
にはバッファタンク１４が配設されている。さらに、前
記自動弁１３ａ−１３ｂを転炉の非吹錬朋間に交互に所
定時間づつ且つそれぞれの所定時間内でパルス状に開閉
するように制御し得る制御装置１５が設ＬＪられている
。The exhaust gas that has passed through the filter 2 is sent to the outlet 1 of the gas sampling device 1.
A is sucked in by a pump 6 via an automatic valve 4 and a sampling gas pipe 3 equipped with a filter 5, and then an automatic valve 7a and a manual valve 7.
b, a bypass pipe 7 equipped with a flowmeter 70, and an automatic valve 8a.
, and a sample gas pipe 8 equipped with a manual valve 8b and a flowmeter 80, and a filter 9 and an analyzer 10 are disposed in the sample gas pipe 8. Purge gas source 1 such as Nt gas cylinder
A purge pipe 12 extends from the purge pipe 1 toward the gas sampling device 1, and a pressure gauge 16 is disposed in the middle thereof. This purge pipe 12 is branched near the outlet, one side is connected to the sampling gas pipe 3 at the outlet part 1a of the gas sampler 1, and the other side is connected to the case lb arranged around the outer periphery of the filter 2 of the gas sampler 1. Automatic valves 13a and 13b are provided in each branch path. Further, a buffer tank 14 is disposed in front of the branch part of the purge pipe I2. Further, a control device 15 is provided which can control the automatic valves 13a and 13b to open and close alternately at predetermined intervals during non-blowing periods of the converter and in a pulsed manner within each predetermined time period.
以」二の構成において、転炉の吹錬期間が経過すると、
非吹錬朋間にわたって制御装置１５が作動し、第２図（
ａ）（ｂ）（ｃ）に示すように、一方の自動弁１３ａが
所定時間の間パルス状に開いてパージ用ガス／１２１１
からパージ配管１２及びバッファタンク１４を経たパー
ジ用ガスがフィルタ２の内側から採取ガスの流れ方向と
は反対方向に断続的にかつ衝撃的に流れ、次の所定時間
の間は他方の自動弁１３ｂが同様にパルス状に開いてフ
ィルタ２の外側からパージ用ガスが断続的にかつ衝撃的
に流れ、これが交互に繰り返される。そのため、フィル
タ２に対してパージ用ガスが内外から交互にかつ衝撃的
に流されることにより、ガス突出時のエネルギーが効果
的に利用されてフィルタ２に付着したダストが効率的に
除去される。しかも、その間、バッファタンク１４によ
りパージ用ガスの急激な流出による圧力低下が抑制され
、かつ自動弁１３ａ・１３ｂがパージ配管１２の出口近
傍に位置しているのでパージ配管１２内を流れる間にお
ける圧力損失も少なくて済み、パージ用ガス源１１の圧
力をダスト除去作用に有効に働かせることができる。こ
うして、フィルタ２に付着したダストを効率的に除去で
きるため、短時間で確実にフィルタ２を清浄しうる。In the configuration mentioned above, when the blowing period of the converter elapses,
The control device 15 operates during the non-blowing period, and as shown in FIG.
As shown in a), (b), and (c), one automatic valve 13a opens in a pulsed manner for a predetermined period of time to supply the purge gas/1211.
The purge gas that has passed through the purge piping 12 and buffer tank 14 flows intermittently and impulsively from inside the filter 2 in the opposite direction to the flow direction of the collected gas, and for the next predetermined time, the other automatic valve 13b is closed. similarly opens in a pulsed manner, and purge gas flows intermittently and impulsively from the outside of the filter 2, and this is repeated alternately. Therefore, the purge gas is alternately and impulsively flowed into the filter 2 from inside and outside, so that the energy generated when the gas is ejected is effectively used, and the dust attached to the filter 2 is efficiently removed. Moreover, during this time, the buffer tank 14 suppresses the pressure drop caused by the sudden outflow of the purge gas, and since the automatic valves 13a and 13b are located near the outlet of the purge pipe 12, the pressure during the flow inside the purge pipe 12 is suppressed. Loss is also small, and the pressure of the purge gas source 11 can be used effectively for dust removal. In this way, the dust adhering to the filter 2 can be efficiently removed, so the filter 2 can be reliably cleaned in a short time.
尚、本発明は上記実施例に示した転炉排ガスの分析装置
に限らず、各種装置の排ガス採取分析装置におけるガス
採取器用フィルタの清浄装置に適用が可能である。The present invention is not limited to the analyzer for converter exhaust gas shown in the above-mentioned embodiments, but can be applied to a cleaning device for a filter for a gas sampler in an exhaust gas sampling and analyzing apparatus for various types of equipment.
本発明のガス採取器用フィルタの清浄装置によれば、以
上のように、バッファタンクによりパージ時の元圧低下
を抑制することができ、かつパージ配管の出口をガス採
取器の出口部とガス採取器のフィルタ外周部で開口させ
るとともに自動弁をパージ配管の各出口近傍位置に配置
した構成である。これにより、圧力損失を低減させるこ
とができ、また前記自動弁を交互に所定時間づつ且つそ
れぞれの所定時間内でパルス状に開閉するように制御し
うる制御装置を設けているので、パージ用ガスをパルス
状に流してガスの突出時のエネルギーを効果的に利用す
ることができる。また、短時間で確実にフィルタに付着
したダストを除去することができ、フィルタの目詰まり
を効果的に防止することができるばかりでなく、ガス成
分の分析によってガスを回収する場合等においても検出
タイミングの遅れを小さくでき、ガスの回収率を向上す
ることができる等の効果を奏する。According to the cleaning device for a filter for a gas sampling device of the present invention, as described above, it is possible to suppress a drop in the source pressure during purging with the buffer tank, and the outlet of the purge piping is connected to the outlet of the gas sampling device and the gas sampling device. This configuration has an opening at the outer periphery of the filter of the device and an automatic valve placed near each outlet of the purge piping. This makes it possible to reduce pressure loss, and since a control device is provided that can control the automatic valve to open and close alternately at predetermined intervals and in a pulsed manner within each predetermined time, the purge gas By flowing the gas in a pulsed manner, the energy generated when the gas is ejected can be effectively utilized. In addition, dust attached to the filter can be removed reliably in a short period of time, effectively preventing filter clogging, and can also be detected when recovering gas by analyzing gas components. This provides effects such as reducing timing delays and improving gas recovery rate.
【図面の簡単な説明】
第１図は本発明を適用した排ガス分析装置の一実施例の
配管系統図、第２図（ａ）（ｂ）（ｃ）は清浄過程のシ
ーケンス図、第３図は転炉における排ガス分析装置の配
置図、第４図は従来例の排ガス分析装置の配管系統図、
第５図は試料ガス流量の経時変化を示すグラフ、第６図
は試料ガス流量と応答時間の関係を示すグラフ、第７図
は検出ガス成分と回収タイミングの関係を示すグラフで
ある。
１はガス採取器、２はフィルタ、３は採取ガス管、１０
は分析計、１１はパージ用ガス源、１２はパージ配管、
１３ａ・１３ｂは自動弁、１４はバッファタンク、１５
は制御装置である。[Brief explanation of the drawings] Fig. 1 is a piping system diagram of an embodiment of the exhaust gas analyzer to which the present invention is applied, Fig. 2 (a), (b), and (c) are sequence diagrams of the cleaning process, and Fig. 3 Figure 4 is a layout diagram of an exhaust gas analyzer in a converter, and Figure 4 is a piping system diagram of a conventional exhaust gas analyzer.
FIG. 5 is a graph showing the change over time in the sample gas flow rate, FIG. 6 is a graph showing the relationship between the sample gas flow rate and response time, and FIG. 7 is a graph showing the relationship between detected gas components and recovery timing. 1 is a gas sampling device, 2 is a filter, 3 is a sampling gas pipe, 10
is an analyzer, 11 is a purge gas source, 12 is a purge pipe,
13a and 13b are automatic valves, 14 is a buffer tank, 15
is the control device.
Claims (1)
給するパージ配管の途中にバッファタンクを設け、パー
ジ配管の出口をガス採取器の出口部とガス採取器のフィ
ルタ外周部で開口させるとともに、それらの出口近傍位
置に自動弁を配設し、各自動弁を交互に所定時間づつ且
つそれぞれの所定時間内でパルス状に開閉するように制
御し得る制御装置を設けたことを特徴とするガス採取器
用フィルタの清浄装置。1. A buffer tank is installed in the middle of the purge piping that supplies purge gas from the purge gas source to the gas sampling device, and the outlet of the purge piping is opened at the outlet of the gas sampling device and the outer periphery of the filter of the gas sampling device. , automatic valves are disposed near their outlets, and a control device is provided that can control each automatic valve to open and close alternately at predetermined intervals and in a pulsed manner within each predetermined time. Cleaning device for filters for gas sampling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25603185A JPS62116232A (en) | 1985-11-15 | 1985-11-15 | Apparatus for cleaning filter for gas sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25603185A JPS62116232A (en) | 1985-11-15 | 1985-11-15 | Apparatus for cleaning filter for gas sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62116232A true JPS62116232A (en) | 1987-05-27 |
Family
ID=17286954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25603185A Pending JPS62116232A (en) | 1985-11-15 | 1985-11-15 | Apparatus for cleaning filter for gas sampler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62116232A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523876A2 (en) * | 1991-07-18 | 1993-01-20 | INDUSTRIAL FILTER & PUMP MFG.CO. | Gas sampling apparatus |
| JP2006349397A (en) * | 2005-06-14 | 2006-12-28 | Nippon Steel Engineering Co Ltd | Gas collection device and gas collection method |
| KR100743023B1 (en) * | 2001-07-31 | 2007-07-26 | 주식회사 포스코 | Apparatus for cleaning of current register |
| US10424469B2 (en) | 2015-11-02 | 2019-09-24 | Pegasor Oy | Apparatus and method for particle measurement |
-
1985
- 1985-11-15 JP JP25603185A patent/JPS62116232A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523876A2 (en) * | 1991-07-18 | 1993-01-20 | INDUSTRIAL FILTER & PUMP MFG.CO. | Gas sampling apparatus |
| EP0523876A3 (en) * | 1991-07-18 | 1994-03-09 | Industrial Filter Pump Mfg Co | |
| KR100743023B1 (en) * | 2001-07-31 | 2007-07-26 | 주식회사 포스코 | Apparatus for cleaning of current register |
| JP2006349397A (en) * | 2005-06-14 | 2006-12-28 | Nippon Steel Engineering Co Ltd | Gas collection device and gas collection method |
| US10424469B2 (en) | 2015-11-02 | 2019-09-24 | Pegasor Oy | Apparatus and method for particle measurement |
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