JPH0644970B2 - How to remove water on the dust collection filter - Google Patents
How to remove water on the dust collection filterInfo
- Publication number
- JPH0644970B2 JPH0644970B2 JP1022858A JP2285889A JPH0644970B2 JP H0644970 B2 JPH0644970 B2 JP H0644970B2 JP 1022858 A JP1022858 A JP 1022858A JP 2285889 A JP2285889 A JP 2285889A JP H0644970 B2 JPH0644970 B2 JP H0644970B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- dust
- high temperature
- dust collection
- water
- 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
- 239000000428 dust Substances 0.000 title claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 13
- 238000009423 ventilation Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000005494 condensation Effects 0.000 description 11
- 238000009833 condensation Methods 0.000 description 11
- 238000001179 sorption measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、焼却炉排ガス等の高温ガス中のダストを捕集
するためのフィルターに生ずる水分の付着を効果的に防
止することができる集塵用フィルターの付着水分除去方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a collection that can effectively prevent the adhesion of water generated on a filter for collecting dust in high temperature gas such as incinerator exhaust gas. The present invention relates to a method for removing adhering water from a dust filter.
（従来の技術） 焼却炉排ガス等の数百℃の高温ガス中のダストを捕集す
るためのフィルターとしては、多孔質セラミックからな
るフィルターが一般的に使用されており、使用開始時に
は高温ガスの通風によって使用温度にまで立ち上げるの
が普通である。(Prior Art) A filter made of porous ceramic is generally used as a filter for collecting dust in high temperature gas of several hundreds of degrees Celsius such as incinerator exhaust gas. It is normal to raise the operating temperature by ventilation.
ところが、高温ガスが低温状態のフィルターと接触する
と結露を生じるので、通風のための圧力損失が過大とな
る。このため通風のための付帯設備が高い通風圧力を必
要とするので大型化してコスト面に問題があった。また
フィルターの使用中においても、高温ガスとフィルター
との温度差によって結露が発生し、圧力損失が大きくな
ることがあった。However, when the high temperature gas comes into contact with the filter in the low temperature state, dew condensation occurs, so that the pressure loss for ventilation is excessive. For this reason, the incidental equipment for ventilation requires high ventilation pressure, which causes an increase in size and a cost problem. Further, even during use of the filter, dew condensation may occur due to the temperature difference between the high temperature gas and the filter, resulting in a large pressure loss.
（発明が解決しようとする課題） 本発明は上記したような従来の問題を解決して、フィル
ターに水分の付着や結露が生じた場合にもこれを直ちに
解消して圧力損失の上昇等のトラブルを引き起こすこと
のないようにした集塵用フィルターの付着水分除去方法
を目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the conventional problems as described above, and immediately eliminates the problem of moisture adhesion or dew condensation on the filter, which causes problems such as an increase in pressure loss. The present invention has been completed for the purpose of removing a water content adhering to a dust collection filter that does not cause
（課題を解決するための手段） 上記の課題を解決するためになされた本発明は、高温ガ
ス中のダストを捕集するための多孔質セラミックからな
るフィルターの両端部に電極を接続して少なくともフィ
ルターへの高温ガスの通風開始時にはフィルターの１ｍ
当たり200 Ｖ以上の電圧を印加しておき、水分の付着が
生じた際にフィルターに流れる電流のジュール熱を利用
してフィルターの付着水分を蒸発させることを特徴とす
るものである。(Means for Solving the Problems) The present invention made to solve the above problems is to connect electrodes to both ends of a filter made of a porous ceramic for capturing dust in a high temperature gas, and at least connect the electrodes to each other. At the beginning of ventilation of high temperature gas to the filter, 1m of the filter
This is characterized in that a voltage of 200 V or more is applied in advance, and when the adhesion of water occurs, the Joule heat of the current flowing through the filter is used to evaporate the water adhered to the filter.
（実施例） 以下に本発明を図面を参照しつつ詳細に説明すると、図
中、(1)は20〜60％の気孔率を有する多孔質セラミック
からなる有底円筒状のフィルターであり、上部支持プレ
ート(2)と下部支持プレート(3)に上下を支持されてケー
シング(4)の内部に多数本が設置され、高温ガス中のダ
ストの集塵用フィルター装置を構成している。フィルタ
ー(1)の材質としては、炭化珪素、アルミナ、コージラ
イト等が普通である。これらの上部支持プレート(2)と
下部支持プレート(3)のフィルター(1)との接触部はそれ
ぞれ電極(5)、(6)となっており、少なくともフィルター
への高温ガスの通風開始時には、これらの電極(5)、(6)
間にフィルター(1)の長さ１ｍ当たり200V以上となるよ
うに電圧を印加しておく。しかし、フィルター(1)が高
い抵抗値を持つために通常時は電圧が印加されてもほと
んど電流が流れない。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings. In the figure, (1) is a bottomed cylindrical filter made of a porous ceramic having a porosity of 20 to 60%, and The support plate (2) and the lower support plate (3) are vertically supported, and a large number of them are installed inside the casing (4) to form a filter device for collecting dust in high temperature gas. The material of the filter (1) is usually silicon carbide, alumina, cordierite or the like. The contact portions of the upper support plate (2) and the lower support plate (3) with the filter (1) are electrodes (5) and (6), respectively, and at least at the start of ventilation of hot gas to the filter, These electrodes (5), (6)
A voltage is applied so that the voltage becomes 200 V or more per 1 m of the filter (1). However, since the filter (1) has a high resistance value, almost no current flows even when a voltage is applied under normal conditions.
ところがこのような集塵用フィルター装置を立ち上げる
ために前述したように高温ガスを通風すると、フィルタ
ー(1)は定温であるためにその表面に結露や水分の付着
を生じ、フィルター(1)の抵抗値が低下する。これとと
もにフィルター(1)には自然に電流が流れはじめ、その
ジュール熱によってフィルター(1)は加熱されるので、
結露や吸着によって生じた水分は蒸発する。このような
作用は結露や水分の吸着の程度が僅かなうちは電流も小
さく、結露や水分の吸着の程度が大きくなると大電流が
流れるというように自然に調整され、迅速に結露や水分
の吸着を解消することができる。また、通風開始の後も
常時電極(5)、(6)間に電圧を印加しておけば、使用中に
生じた結露や水分の吸着をも直ちに解消することが可能
となる。However, when hot gas is ventilated as described above to start up such a dust collecting filter device, the filter (1) has a constant temperature, so that dew condensation or moisture adheres to the surface of the filter (1), The resistance value decreases. Along with this, an electric current starts to flow through the filter (1), and the Joule heat heats the filter (1).
Moisture generated by dew condensation or adsorption evaporates. This action is naturally adjusted so that the current is small while the degree of dew condensation or moisture adsorption is small, and a large current flows when the degree of dew condensation or moisture adsorption is large, so that dew condensation or moisture adsorption can be performed quickly. Can be resolved. Further, if a voltage is always applied between the electrodes (5) and (6) even after the start of ventilation, it is possible to immediately eliminate the dew condensation and the adsorption of water that occur during use.
図示の実施例では上部支持プレート(2)と下部支持プレ
ート(3)とを電極として使用したが、各フィルター(1)の
上下両端部に電極を接着しておき、各電極にケーブルを
接続して通電を行うようにしてもよい。なお、電圧をフ
ィルター(1)の長さ１ｍ当たり200V以上としたのは、こ
れ以下では十分な発熱量が得られないためである。本発
明においては電流値はフィルター(1)の状態により変化
するが、迅速に水分の蒸発を行わせるためには、フィル
ターの断面積１cm2当たり２mA以上の電流を流すことが
好ましい。In the illustrated embodiment, the upper support plate (2) and the lower support plate (3) were used as electrodes, but electrodes were bonded to the upper and lower ends of each filter (1) and a cable was connected to each electrode. You may make it energize. The voltage was set to 200 V or more per 1 m of the length of the filter (1) because a sufficient amount of heat generation cannot be obtained below this. In the present invention, the current value changes depending on the state of the filter (1), but in order to quickly evaporate water, it is preferable to apply a current of 2 mA or more per 1 cm 2 of the cross-sectional area of the filter.
更にまた、図示のように電流計(7)を電源回路に接続し
ておけば、電流値の変化によって外部からフィルター
(1)の湿り状態を知ることができ、予知保全が行い易く
なる。Furthermore, if the ammeter (7) is connected to the power supply circuit as shown in the figure, the filter can be externally changed by changing the current value.
The wet condition of (1) can be known, and predictive maintenance can be performed easily.
（発明の効果） 本発明は以上に説明したとおり、極めて簡単な構造によ
り高温ガス中のダストを捕集するためのフィルターの結
露や水分の吸着を防止することができるようにしたので
あり、特に立ち上げ時に不可避的に発生する結露の防止
に大きい効果を発揮するものである。また本発明の方法
によれば、フィルターを内部から加熱するために表面に
フィルターのダストが付着していても確実な効果を得る
ことができる利点がある。よって本発明は従来の問題点
を一掃した集塵用フィルターの付着水分の除去方法とし
て、産業の発展に寄与するところは極めて大きいものが
ある。(Effects of the Invention) As described above, the present invention is capable of preventing dew condensation and water adsorption of a filter for trapping dust in high temperature gas with an extremely simple structure, and in particular, It has a great effect in preventing dew condensation that is inevitably generated at the time of startup. Further, according to the method of the present invention, since the filter is heated from the inside, there is an advantage that a reliable effect can be obtained even if dust of the filter adheres to the surface. Therefore, the present invention has an extremely great contribution to the industrial development as a method for removing the water content adhering to the dust collecting filter, which eliminates the conventional problems.
図面は本発明の実施例を説明する一部切欠正面図であ
る。 (1)：フィルター、(5)、(6)：電極。The drawings are partially cutaway front views for explaining an embodiment of the present invention. (1): Filter, (5), (6): Electrode.
Claims (1)
質セラミックからなるフィルターの両端部に電極を接続
して少なくともフィルターへの高温ガスの通風開始時に
はフィルターの長さ１ｍ当たり200 Ｖ以上の電圧を印加
しておき、水分の付着が生じた際にフィルターに流れる
電流のジュール熱を利用してフィルターの付着水分を蒸
発させることを特徴とする集塵用フィルターの付着水分
除去方法。1. An electrode is connected to both ends of a filter made of porous ceramics for collecting dust in a high temperature gas, and at least 200 V per 1 m of the length of the filter at the start of ventilation of the high temperature gas to the filter. Is applied, and when the adhesion of water occurs, Joule heat of the current flowing through the filter is used to evaporate the water adhered to the filter, thereby removing the water adhered to the dust collecting filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022858A JPH0644970B2 (en) | 1989-02-01 | 1989-02-01 | How to remove water on the dust collection filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1022858A JPH0644970B2 (en) | 1989-02-01 | 1989-02-01 | How to remove water on the dust collection filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02203913A JPH02203913A (en) | 1990-08-13 |
| JPH0644970B2 true JPH0644970B2 (en) | 1994-06-15 |
Family
ID=12094417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1022858A Expired - Lifetime JPH0644970B2 (en) | 1989-02-01 | 1989-02-01 | How to remove water on the dust collection filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644970B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110308522A1 (en) * | 2008-12-22 | 2011-12-22 | Koninklijke Philips Electronics N.V. | Gas filter with integrated heating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0616810B2 (en) * | 1988-09-19 | 1994-03-09 | 株式会社ピュアロンジャパン | Fluid filter |
-
1989
- 1989-02-01 JP JP1022858A patent/JPH0644970B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02203913A (en) | 1990-08-13 |
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