JPH0474506A - Dust collecting method by bag filter - Google Patents
Dust collecting method by bag filterInfo
- Publication number
- JPH0474506A JPH0474506A JP18684690A JP18684690A JPH0474506A JP H0474506 A JPH0474506 A JP H0474506A JP 18684690 A JP18684690 A JP 18684690A JP 18684690 A JP18684690 A JP 18684690A JP H0474506 A JPH0474506 A JP H0474506A
- Authority
- JP
- Japan
- Prior art keywords
- bag filter
- exhaust gas
- dust collection
- incineration ash
- sludge incineration
- 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.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000010802 sludge Substances 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000010410 dusting Methods 0.000 claims description 2
- 239000002956 ash Substances 0.000 abstract description 36
- 239000003795 chemical substances by application Substances 0.000 abstract description 12
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract 6
- 235000002918 Fraxinus excelsior Nutrition 0.000 abstract 3
- 239000002912 waste gas Substances 0.000 abstract 3
- 238000006298 dechlorination reaction Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 32
- 238000004140 cleaning Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 230000003472 neutralizing effect Effects 0.000 description 10
- 230000002378 acidificating effect Effects 0.000 description 7
- 238000010612 desalination reaction Methods 0.000 description 5
- 239000010881 fly ash Substances 0.000 description 5
- 239000007795 chemical reaction product Substances 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、バグフィルタによる集塵方法に係り、特に濾
布に付着した吸湿性固形物を効果的に剥離させるバグフ
ィルタによる集塵方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dust collection method using a bag filter, and particularly relates to a dust collection method using a bag filter that effectively removes hygroscopic solid matter adhering to a filter cloth. It is something.
ガス中の固形物、特に燃焼排ガス中のダスト等を除去す
る集塵器として使用されるバグフィルタは、最近その特
性が見向され、ごみ焼却装置から排出される排ガス中に
含まれるＳＯｘ、ＨＣ，ｉ！等の有害酸性成分の除去、
いわゆる排ガスの脱塩用としても用いられている。Bag filters are used as dust collectors to remove solids from gas, especially dust from combustion exhaust gas, and their properties have recently been recognized. ,i! Removal of harmful acidic components such as
It is also used for desalination of exhaust gas.
バグフィルタにより、ごみ焼却装置から排出される排ガ
スを脱塩する場合、まずバグフィルタの前流側で排ガス
中に消石灰等のアルカリ反応剤が供給されてバグフィル
タの濾布面にアルカリ反応剤層が形成され、燃焼排ガス
はこのアルカリ反応剤層を通過する際に脱塩される。す
なわち、排ガス中の有害酸性成分は、前記アルカリ反応
剤層を通過する際の中和反応生成物として濾布に捕集さ
れる。When using a bag filter to desalinate exhaust gas discharged from a garbage incinerator, an alkaline reactant such as slaked lime is first supplied into the exhaust gas on the upstream side of the bag filter, forming a layer of alkaline reactant on the filter cloth surface of the bag filter. is formed, and the combustion exhaust gas is desalinated as it passes through this alkaline reactant layer. That is, harmful acidic components in the exhaust gas are collected on the filter cloth as neutralization reaction products when passing through the alkaline reactant layer.
しかしながら、例えば、塩化カルシウム（ＣａＣｊ！２
）等の中和反応生成物は吸湿性が強く、固化し易いた
め、濾布洗浄時に剥離しににく、このため集塵室の圧力
損失が上昇して正常な運転が続けられないという問題が
生じている。そこで、捕集した固形物の剥離性を向上さ
せるために、通常、剥離助剤として、例えばケイソウ上
等が使用されるがこの剥離助剤の必要添加量が前記アル
カリ反応剤の約２０〜５０重量％と多いために、シンニ
ングコストが高くなるという問題がある。However, for example, calcium chloride (CaCj!2
) and other neutralization reaction products are highly hygroscopic and easily solidify, making them difficult to peel off when cleaning the filter cloth, which increases the pressure loss in the dust collection chamber and prevents normal operation from continuing. is occurring. Therefore, in order to improve the peelability of the collected solids, diatomaceous material, for example, is usually used as a peeling aid. There is a problem in that the thinning cost increases because of the large amount by weight.
本発明の目的は、上記従来技術の問題点を解決し、ケイ
ソウ上等の高価な剥離助剤に代わる安価なものを用いる
ことにより、吸着性および付着性の強い固形物でも効率
よく剥離して安定した集塵操作を継続できるバグフィル
タによる集塵方法を提供することにある。The purpose of the present invention is to solve the above-mentioned problems of the prior art, and to use an inexpensive one to replace expensive peeling aids such as diatomaceous material, so that even strongly adsorbent and adhesive solids can be efficiently peeled off. It is an object of the present invention to provide a dust collection method using a bag filter that allows stable dust collection operation to be continued.
本発明者は、例えばケイソウ上のように剥離助剤として
使用されるものは、一般にポーラスであり、２００〜３
００％の水分を保持する性質を有しているが、単独で空
気中に放置しておいてもほとんど吸湿しないこと、また
排ガス中にケイソウ上を混入させてもケイソウ上自身が
排ガスから水分を吸収することはないが、バグフィルタ
の濾布面に形成されたケイソウ土層上に堆積した排ガス
中の飛灰はケイソウ上によってその水分が吸収され、そ
の結果、固着しにくくなること等に着目し、種々のケイ
ソウ上代替物について検討したところ、汚泥焼却灰が上
記ケイソウ上と類似の性質を有することを見出し、鋭意
研究の結果本発明に到達した。The inventor has discovered that those used as release aids, such as on diatomaceous materials, are generally porous and have a
Although it has the property of retaining 00% moisture, it absorbs almost no moisture even if left alone in the air, and even if diatomaceous material is mixed into exhaust gas, the diatomaceous material itself will absorb moisture from the exhaust gas. Although it is not absorbed, fly ash in the exhaust gas that accumulates on the diatomaceous earth layer formed on the filter cloth surface of the bag filter absorbs moisture on the diatomaceous earth layer, and as a result, it becomes difficult to stick. However, when various substitutes for diatomaceous materials were investigated, it was discovered that sludge incineration ash has similar properties to the above-mentioned diatomaceous materials, and as a result of intensive research, the present invention was arrived at.
すなわち本発明は、排ガスを築塵室に導入し、排ガス中
の固形物を濾布を用いて捕集する集塵工程と、捕集した
固形物を払い落とす払い落とし工程とを繰り返すバグフ
ィルタによる集塵方法において、前記払い落とし工程に
おける固形物の払い落とし効率を高めるために剥離助剤
として汚泥焼却灰を用いることを特徴とする。That is, the present invention uses a bag filter that repeats a dust collection process in which exhaust gas is introduced into a dust-building chamber and solids in the exhaust gas are collected using a filter cloth, and a dusting process in which the collected solids are brushed off. The dust collection method is characterized in that sludge incineration ash is used as a stripping aid in order to improve the efficiency of brushing off solid matter in the stripping step.
バグフィルタ装置に排ガスを導入し始めると同時に、剥
離助剤として所定量の汚泥焼却灰を導入すると、該汚泥
焼却灰は排ガス流に乗じてバグフィルタの濾布面上にほ
ぼ均一に堆積して汚泥焼却灰層を形成する。この汚泥焼
却灰層上に堆積した、例えば脱塩後の中和反応生成物に
代表される吸湿性および付着性の強い固形物は前記汚泥
焼却灰にその水分が吸収されて含水量が低減され、付着
性も弱くなり、パルス洗浄時の剥離性が向上して剥離し
易くなる。When a predetermined amount of sludge incineration ash is introduced as a stripping aid at the same time as exhaust gas is introduced into the bag filter device, the sludge incineration ash rides on the exhaust gas flow and is almost uniformly deposited on the filter cloth surface of the bag filter. Sludge incineration forms an ash layer. The water content of highly hygroscopic and adhesive solids, such as neutralization reaction products after desalination, deposited on this sludge incineration ash layer is absorbed by the sludge incineration ash, and the water content is reduced. , the adhesion becomes weaker, and the releasability during pulse cleaning improves, making it easier to peel off.
第１表は、代表的な汚泥焼却灰と典型的な剥離助剤であ
るケイソウ上（商品名ニラジオライｌ−Ａ）との成分分
析結果を示すものである。この表から汚泥焼却灰はケイ
素、アルミニウム、鉄等の金属酸化物を主成分とする点
でケイソウ上と類似しており、またＣβの含有量が０．
０２％と少ないことから、いわゆる潮解性に起因する濾
布への付着性も小さいことがわかる。Table 1 shows the results of component analysis of typical sludge incineration ash and diatomaceous material (trade name Niradiolai I-A), which is a typical stripping aid. This table shows that sludge incineration ash is similar to diatomaceous ash in that its main components are metal oxides such as silicon, aluminum, and iron, and the content of Cβ is 0.
Since it is as low as 0.02%, it can be seen that the adhesion to the filter cloth due to so-called deliquescent property is also small.
以下余白
第
表
本発明において、剥離助剤としての汚泥焼却灰の供給は
、排ガスの集塵開始時、すなわちバグフィルタの濾布更
新後とパルス洗浄後の排ガス集塵開始時に一時的に供給
すること、または常時供給することが好ましく、その供
給量は次回のパルス洗浄時までに除塵される飛灰の絶対
量の３〜ｌ５ｗｔ％が好ましく、特に５〜ｌＱｗｔ％が
好ましい。Below is the blank table.In the present invention, sludge incineration ash as a stripping aid is temporarily supplied at the start of exhaust gas dust collection, that is, after the filter cloth of the bag filter is renewed and at the start of exhaust gas dust collection after pulse cleaning. It is preferable to supply the fly ash continuously or constantly, and the supply amount is preferably 3 to 15 wt%, particularly preferably 5 to 1 Qwt%, of the absolute amount of fly ash to be removed by the next pulse cleaning.
次に、本発明を実施例によりさらに詳細に説明する。 Next, the present invention will be explained in more detail with reference to Examples.
第１図は、本発明の一実施例を示す装置系統図である。FIG. 1 is an apparatus system diagram showing an embodiment of the present invention.
この装置は、ごみ焼却炉の排ガス煙道１と、該排ガス煙
道１に連結された中和剤５の供給ライン２および汚泥焼
却灰６の供給ライン３と、該中和剤供給ライン２および
汚泥焼却灰供給ライン３と排ガス煙道１との結合部の後
流側に配置されたバグフィルタ７と、その後流の煙突８
とから主として構成されている。このような構成におい
て、ごみ焼却炉から排出された排ガス４は排ガス煙道１
を通りバグフィルタ７に向かって流れる。This device includes an exhaust gas flue 1 of a garbage incinerator, a supply line 2 for a neutralizer 5 connected to the flue 1, a supply line 3 for sludge incineration ash 6, and a supply line 2 for the neutralizer 5 and a supply line 3 for the sludge incineration ash 6. A bag filter 7 disposed on the downstream side of the joint between the sludge incineration ash supply line 3 and the exhaust gas flue 1, and a chimney 8 downstream thereof.
It is mainly composed of. In such a configuration, the exhaust gas 4 discharged from the garbage incinerator is passed through the exhaust gas flue 1.
and flows toward the bag filter 7.
この時排ガス４の集塵開始とほぼ同時に汚泥焼却灰供給
ライン６から所定量、例えば次回のパルス洗浄時までに
除塵される全飛灰量の３ｗｔ％の汚泥焼却灰が一時的に
供給され、次いで中和剤供給ライン２から中和剤として
、次回のパルス洗浄時までに処理される排ガス中の全有
害酸性成分の、例えば１．０５当量の、例えば水酸化カ
ルシウム（Ｃａ （ＯＨ）２ ）が供給される。煙道ｌ
に供給された汚泥焼却灰６および中和剤５はガス４の流
れに乗じて後流のバグフィルタ７へ流入し、該バグフィ
ルタ７の濾布面上に、先ず剥離助剤層としての汚泥焼却
灰層が形成され、その上に、排ガス煙道１内で一部の有
害酸性成分と反応した中和塩を含む中和剤層が形成され
る。その後、排ガス４は中和剤層、汚泥焼却灰層および
濾布を順次通過し、その際に有害酸性成分は中和剤と反
応した中和塩として、また固形物は汚泥焼却灰層に捕集
される。At this time, almost simultaneously with the start of dust collection of the exhaust gas 4, a predetermined amount of sludge incineration ash is temporarily supplied from the sludge incineration ash supply line 6, for example, 3 wt% of the total amount of fly ash to be removed until the next pulse cleaning, Next, from the neutralizing agent supply line 2, as a neutralizing agent, for example, 1.05 equivalent of calcium hydroxide (Ca(OH)2) is added to the total amount of harmful acidic components in the exhaust gas to be treated until the next pulse cleaning. is supplied. flue l
The sludge incineration ash 6 and the neutralizing agent 5 flow into the bag filter 7 in the downstream along with the flow of the gas 4, and the sludge as a stripping aid layer is first deposited on the filter cloth surface of the bag filter 7. An incineration ash layer is formed, and a neutralizing agent layer containing neutralizing salts that have reacted with some harmful acidic components in the exhaust gas flue 1 is formed on top of the incineration ash layer. After that, the exhaust gas 4 passes through the neutralizing agent layer, the sludge incineration ash layer, and the filter cloth in order, and at this time, harmful acidic components are reacted with the neutralizing agent as neutralized salts, and solids are captured in the sludge incineration ash layer. collected.
固形物および有害酸性成分が除去された排ガス４は浄化
排ガスとして後流の煙突８から大気に放散される。The exhaust gas 4 from which solids and harmful acidic components have been removed is released into the atmosphere from a downstream chimney 8 as purified exhaust gas.
第２図は、本実施例におけるバグフィルタの集塵室内の
圧力損失と集塵時間との関係を、比較例（剥離助剤を用
いない外は本実施例と同様にして行った）と比較して示
したものである。図において剥離助剤として汚泥焼却灰
を用いた本実施例の方が固形物の剥離性がよく、同様の
パルス条件でも圧力損失を低く保持できることがわかる
。Figure 2 compares the relationship between the pressure loss in the dust collection chamber of the bag filter and the dust collection time in this example with that of a comparative example (the process was carried out in the same manner as in this example except that no stripping aid was used). This is what was shown. In the figure, it can be seen that the present example in which sludge incineration ash was used as a stripping aid had better stripping properties for solid matter, and that pressure loss could be kept low even under similar pulse conditions.
本実施例によれば、多孔質でかつ保水性の高い汚泥焼却
灰６を剥離助剤として用いたことにより、汚泥焼却灰の
有効利用を図り、剥離助剤に要する経費を節減きるだけ
でなく、ＣａＣｆｆ２のような吸湿性の強い中和反応生
成物であっても、パルス洗浄によってほぼ完全に剥離す
ることができ、パルスエア量およびパルス洗浄回数を節
約することができる。また、パルス洗浄回数が少なくな
ることがら濾布の寿命を延命することができる。さらに
、集塵室内の圧力損失を低く保持できるのでＩＤＦの動
力コス１〜を低減できる。According to this embodiment, by using sludge incineration ash 6, which is porous and has high water retention, as a stripping aid, it is possible to effectively utilize the sludge incineration ash and reduce the cost required for the stripping aid. Even highly hygroscopic neutralization reaction products such as , CaCff2 can be almost completely removed by pulse cleaning, and the amount of pulse air and number of pulse cleanings can be saved. Furthermore, since the number of times of pulse washing is reduced, the life of the filter cloth can be extended. Furthermore, since the pressure loss in the dust collection chamber can be kept low, the power cost of the IDF can be reduced.
本実施例において汚泥焼却灰６の供給は、全集塵工程に
おいて連続的に行うこともできるが、バグフィルタによ
る排ガス集塵開始時、すなわち濾布の更新後、または濾
布のパルス洗浄後の集塵開始時にパルス的に供給するこ
とが好ましく、その供給量は次回のパルス洗浄時までに
捕集される排ガス中の飛灰量（脱塩反応による中和塩を
含む）の３〜１５ｗｔ％が好ましく、特に５〜１０ｗｔ
％が好ましい。また中和剤の供給も、前記汚泥焼却灰同
様、全脱塩工程において連続的に行うこともできるが、
次回のパルス洗浄時までに処理する全酸性成分と当量ま
たはそれ以上の中和塩を箭記汚泥焼却灰の供給に引き続
いてパルス的に供給することが好ましい。In this embodiment, the sludge incineration ash 6 can be supplied continuously during the entire dust collection process, but it is also possible to supply the sludge incineration ash 6 at the start of exhaust gas dust collection by the bag filter, that is, after the filter cloth has been renewed or after the filter cloth has been pulse-washed. It is preferable to supply the dust in a pulsed manner at the start of the dust cleaning, and the supply amount is such that 3 to 15 wt% of the amount of fly ash (including neutralized salt from the desalination reaction) in the flue gas to be collected by the next pulse cleaning. Preferably, especially 5-10wt
% is preferred. In addition, the supply of the neutralizing agent can also be carried out continuously during the entire desalination process, as in the case of the sludge incineration ash mentioned above.
It is preferable to supply neutralized salt in an amount equivalent to or more than all the acidic components to be treated until the next pulse cleaning in a pulsed manner subsequent to the supply of the sludge incineration ash.
本実施例において剥離助剤として前記汚泥焼却灰ととも
に従来から使用されている、例えばケイソウ上等を併用
することもできる。これにより性能をそれ程損なわずに
、高価なケイソウ上の使用量を低減し、ランニングコス
トを下げることができる。また、汚泥焼却灰供給ライン
３は中和剤供給ライン２よりも前流側で排ガス煙道１と
連結してもよい。In this embodiment, it is also possible to use, for example, diatomaceous material, which has been conventionally used together with the sludge incineration ash, as a stripping aid. This makes it possible to reduce the amount of expensive diatomaceous material used and lower running costs without significantly compromising performance. Further, the sludge incineration ash supply line 3 may be connected to the exhaust gas flue 1 on the upstream side of the neutralizing agent supply line 2.
本発明によれば、剥離助剤として汚泥焼却灰を用いたこ
とにより、例えば排ガスの脱塩によって生じた中和塩の
ような吸湿性および付着性の強い固形物であっても効果
的に剥離することができ、安定した集塵操作を継続する
ことができる。また汚泥焼却灰を有効利用できるうえ、
剥離助剤に要する経費を低減することができる。According to the present invention, by using sludge incineration ash as a stripping aid, even strongly hygroscopic and adhesive solids, such as neutralized salts produced by desalination of exhaust gas, can be effectively stripped. This allows stable dust collection operations to continue. In addition, sludge incineration ash can be used effectively,
The cost required for a peeling aid can be reduced.
第Ｆ図は、本発明の一実施例を示す装置系統図、第２図
は、第１図の装置を用いた実施例におＬＪる集塵室の圧
力損失と集塵時間との関係を比較例と比較して示した図
である。
１・・・排ガス煙道、２・・・中和剤供給ライン、３・
・・汚泥焼却灰供給ライン、４・・・排ガス、５・・・
中和剤、６・・・汚泥焼却排、７・・・バグフィルタ、
８・・・煙突。Fig. F is a system diagram of an apparatus showing an embodiment of the present invention, and Fig. 2 shows the relationship between pressure loss in the dust collection chamber and dust collection time in an embodiment using the apparatus of Fig. 1. It is a figure shown in comparison with a comparative example. 1... Exhaust gas flue, 2... Neutralizer supply line, 3...
...Sludge incineration ash supply line, 4...Exhaust gas, 5...
Neutralizing agent, 6... Sludge incineration waste, 7... Bag filter,
8...Chimney.
Claims (1)
物を濾布を用いて捕集する集塵工程と、捕集した固形物
を払い落とす払い落とし工程とを繰り返すバグフィルタ
による集塵方法において、前記払い落とし工程における
固形物の払い落とし効率を高めるために剥離助剤として
汚泥焼却灰を用いることを特徴とするバグフィルタによ
る集塵方法。(1) Using a bag filter that repeats a dust collection process in which exhaust gas is introduced into a dust collection chamber and hygroscopic solids in the exhaust gas are collected using a filter cloth, and a dusting process in which the collected solids are brushed off. A dust collection method using a bag filter, characterized in that sludge incineration ash is used as a stripping aid to improve the efficiency of brushing off solid matter in the stripping step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18684690A JP2948880B2 (en) | 1990-07-13 | 1990-07-13 | Dust collection method using bag filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18684690A JP2948880B2 (en) | 1990-07-13 | 1990-07-13 | Dust collection method using bag filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0474506A true JPH0474506A (en) | 1992-03-09 |
| JP2948880B2 JP2948880B2 (en) | 1999-09-13 |
Family
ID=16195664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18684690A Expired - Fee Related JP2948880B2 (en) | 1990-07-13 | 1990-07-13 | Dust collection method using bag filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2948880B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762948A (en) * | 1995-06-07 | 1998-06-09 | Ambi Inc. | Moist bacteriocin disinfectant wipes and methods of using the same |
-
1990
- 1990-07-13 JP JP18684690A patent/JP2948880B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5762948A (en) * | 1995-06-07 | 1998-06-09 | Ambi Inc. | Moist bacteriocin disinfectant wipes and methods of using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2948880B2 (en) | 1999-09-13 |
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