JPH0649135B2 - Exhaust gas treatment device - Google Patents
Exhaust gas treatment deviceInfo
- Publication number
- JPH0649135B2 JPH0649135B2 JP59230314A JP23031484A JPH0649135B2 JP H0649135 B2 JPH0649135 B2 JP H0649135B2 JP 59230314 A JP59230314 A JP 59230314A JP 23031484 A JP23031484 A JP 23031484A JP H0649135 B2 JPH0649135 B2 JP H0649135B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- filter medium
- layer
- present
- gas treatment
- 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 27
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 21
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 10
- 239000000920 calcium hydroxide Substances 0.000 claims description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 10
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000011343 solid material Substances 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 8
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 3
- 229910052815 sulfur oxide Inorganic materials 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010451 perlite Substances 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- SHFGJEQAOUMGJM-UHFFFAOYSA-N dialuminum dipotassium disodium dioxosilane iron(3+) oxocalcium oxomagnesium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Na+].[Na+].[Al+3].[Al+3].[K+].[K+].[Fe+3].[Fe+3].O=[Mg].O=[Ca].O=[Si]=O SHFGJEQAOUMGJM-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、排ガス処理装置に関し、特に都市ごみ焼却プ
ラント等から大量に排出される焼却飛灰、塩化水素、窒
素酸化物、硫黄酸化物を含むガスを効果的に処理する装
置に関する。Description: TECHNICAL FIELD The present invention relates to an exhaust gas treatment apparatus, and in particular to incineration fly ash, hydrogen chloride, nitrogen oxides, and sulfur oxides that are discharged in large quantities from municipal waste incineration plants and the like. The present invention relates to a device for effectively treating a gas containing the same.
（従来の技術） 本発明者らは、先に、塩化水素除去を高める為に織布ろ
布に消石灰及び塩化カルシウムの固形物層を形成させる
技術を開発した。(Prior Art) The present inventors have previously developed a technique for forming a solid layer of slaked lime and calcium chloride on a woven filter cloth in order to enhance removal of hydrogen chloride.
ここで使用しているろ布は、グラスウール材であり、耐
熱性に劣るため、通気ガスの温度を２５０℃以下に維持
する必要がある。Since the filter cloth used here is a glass wool material and has poor heat resistance, it is necessary to maintain the temperature of the ventilation gas at 250 ° C. or lower.
耐熱性のあるろ過材料としては、炭素繊維の織布ろ材や
ステンレス鋼製の織りろ材等がある。Examples of heat-resistant filtering materials include woven carbon fiber filter media and woven stainless steel filter media.
（発明が解決しようとする問題点） 上記炭素繊維の織布ろ材は摩擦に弱く、ステンレス鋼製
の織りろ材は価格が非常に高い等の難点がある。(Problems to be Solved by the Invention) The above-mentioned woven filter medium made of carbon fiber is weak against friction, and the woven filter medium made of stainless steel is very expensive.
また、本発明では、塩化水素除去機能の他に、窒素酸化
物除去（すなわち脱硝）機能をも併合させようとするも
のであるが、脱硝機能を維持する為の脱硝触媒を上記ス
テンレス鋼製織りろ材に保持させることは困難である。
すなわち、該ろ材表面に脱硝触媒をコーテイングするに
は、コーテイング材（脱硝触媒）とろ材表面が十分に濡
れることが必要であるが、ステンレス鋼製のろ材は濡れ
性が悪く、均一なコーテイング層を形成することが困難
である。Further, in the present invention, in addition to the function of removing hydrogen chloride, it is also intended to combine the function of removing nitrogen oxides (that is, denitration). However, the denitration catalyst for maintaining the denitration function is made of the above-mentioned stainless steel weave. It is difficult to hold it on the filter medium.
That is, in order to coat a denitration catalyst on the surface of the filter medium, it is necessary that the coating material (denitration catalyst) and the surface of the filter medium are sufficiently wet. Difficult to form.
本発明は、以上の問題点を解決し、ろ材の耐熱性を低コ
ストで向上させ、かつ塩化水素除去機能と窒素酸化物除
去機能を併せ持つ排ガス処理装置を提供しようとするも
のである。The present invention is intended to solve the above problems, to improve the heat resistance of a filter medium at low cost, and to provide an exhaust gas treatment device having both a hydrogen chloride removing function and a nitrogen oxide removing function.
（問題点を解決するための手段） 本発明者らは、上記問題点を解決するために鋭意研究の
結果、ろ材として多孔質セラミツクを用いれば、耐熱性
が向上するのみならず、触媒との濡れ性にも優れ、更に
は集塵効果、逆洗空気によるろ材表面の清浄化効果をも
奏することができ、好適な排ガス処理装置を提供し得る
との知見を得て本発明を提案するに至つた。(Means for Solving Problems) As a result of intensive research for solving the above problems, the present inventors have found that when a porous ceramic is used as a filter medium, not only heat resistance is improved but also a catalyst is used. The wettability is excellent, and further, the dust collecting effect and the effect of cleaning the surface of the filter medium by the backwashing air can be exhibited, and the present invention is proposed based on the finding that a suitable exhaust gas treatment device can be provided. It arrived.
すなわち本発明は、ろ材として多孔質セラミツク材を用
い、該ろ材表面の排ガス流入面側に特殊反応助剤プリコ
ート層を介して消石灰又は炭酸カルシウム及び塩化カル
シウムを含む固形物層を形成し、排ガス流出面側に窒素
酸化物除去用触媒層を設けたことを特徴とする排ガス処
理装置に関するものである。That is, the present invention uses a porous ceramic material as a filter medium, forms a solid layer containing slaked lime or calcium carbonate and calcium chloride via a special reaction aid precoat layer on the exhaust gas inflow side of the filter medium, and exhaust gas outflow The present invention relates to an exhaust gas treatment apparatus, which is provided with a catalyst layer for removing nitrogen oxides on the surface side.
第１図は本発明装置の一実施態様例を示す概要図、第２
図は第１図の一部拡大概要図である。FIG. 1 is a schematic diagram showing an embodiment of the device of the present invention, FIG.
The figure is a partially enlarged schematic view of FIG.
第１，２図に示すように、本発明に係るろ材１は、多孔
質セラミツク（例えば、ムライト、高純度アルミナ等）
製の円筒構造で、ろ材１表面のガス流出面側に脱硝触媒
（例えば、五酸化バナジウムと酸化チタンの混合物）層
４が、例えばろ材表面の焼結作業を経て形成される。上
記ろ材１表面のガス流入面側には、ろ材の目詰を防ぐた
めに特殊反応助剤プリコート層２が設けられ、その上に
消石灰又は炭酸カルシウム（以下、消石灰という）と塩
化カルシウムを含む固形物層３が形成される。なお、図
中の矢印はガスの流れ方向を示す。As shown in FIGS. 1 and 2, the filter medium 1 according to the present invention comprises a porous ceramic (eg, mullite, high-purity alumina, etc.).
A denitration catalyst (for example, a mixture of vanadium pentoxide and titanium oxide) layer 4 is formed on the gas outflow side of the surface of the filter medium 1 having a cylindrical structure made of, for example, through a sintering operation on the surface of the filter medium. A special reaction aid precoat layer 2 is provided on the gas inflow side of the surface of the filter medium 1 in order to prevent clogging of the filter medium, and a solid substance containing slaked lime or calcium carbonate (hereinafter referred to as slaked lime) and calcium chloride is formed thereon. Layer 3 is formed. In addition, the arrow in a figure shows the flow direction of gas.
本発明における特殊反応助剤としては、かさ密度が小
さい、通気性がよい、吸気してもベトつかない、
１〜１００μ粒径、好ましくは１０〜５０μ粒径のもの
が適当で、例えば、ゼオライト、アルミナ、ケイソウ
土、パーライト、活性白土、カオリン、長石、石英等の
粉末の中から選ばれ、１種もしくは２種以上の混合粉末
として使用する。この粉体の中でも好適なものとしては
ゼオライト、ケイソウ土、パーライトがあげられる。As the special reaction aid in the present invention, the bulk density is small, the air permeability is good, it is not sticky even when inhaled,
Particles having a particle size of 1 to 100 μm, preferably 10 to 50 μm are suitable. For example, one selected from powders of zeolite, alumina, diatomaceous earth, perlite, activated clay, kaolin, feldspar, quartz, etc., or Used as a mixed powder of two or more kinds. Among these powders, zeolite, diatomaceous earth and perlite are preferable.
第１，２図に示すような本発明装置は、例えば次のよう
な態様で構成される。The device of the present invention as shown in FIGS. 1 and 2 is configured in the following manner, for example.
先ず、排ガスダクト内に、脱硝触媒層４を形成したろ材
１を設置する（第３図中の１０）。First, the filter medium 1 on which the denitration catalyst layer 4 is formed is installed in the exhaust gas duct (10 in FIG. 3).
次に、前記した特殊反応助剤を（第３図中の１１から）
導入し、プリコート層２を形成する。一方、消石灰を吹
込んだ排ガスを導入する。消石灰は排ガス中の塩化水素
と反応し、塩化カルシウムとなる。この塩化カルシウム
と未反応の消石灰とがろ材１表面に達し、固形物層３を
形成する。Next, the above-mentioned special reaction aid (from 11 in FIG. 3)
Then, the precoat layer 2 is formed. On the other hand, the exhaust gas blown with slaked lime is introduced. Slaked lime reacts with hydrogen chloride in the exhaust gas to form calcium chloride. The calcium chloride and unreacted slaked lime reach the surface of the filter medium 1 to form the solid layer 3.
上記した塩化カルシウムは潮解性を有し、排ガス中の水
分の凝縮等により粘着性の固体となるおそれがある。こ
のような状態になると、ろ材の孔を防いだり、粉体層の
圧密性を助長して装置の正常維持が困難になる。The above-mentioned calcium chloride has a deliquescent property and may become a sticky solid due to condensation of water in exhaust gas. In such a state, it becomes difficult to prevent the pores of the filter medium and promote the compaction of the powder layer, and it is difficult to maintain the apparatus normally.
斯る状況を防ぐために、本発明では、予め、ろ材表面に
上述の特殊反応助剤によるプリコート層２を形成するの
である。In order to prevent such a situation, in the present invention, the precoat layer 2 made of the above-mentioned special reaction aid is formed on the surface of the filter medium in advance.
その後、上述の消石灰が吹込まれた排ガスが通気され、
該ガス中の上記した固形物が、プリコート層２の上に固
形物層（粉体層）３を形成して行く。同時に、第３図に
示すように、上述のろ材１０に通じる排ガスダクト内に
供給装置１１から特殊反応助剤を常時噴射し、粉体層３
の圧密化を抑制する。After that, the exhaust gas blown with the above-mentioned slaked lime is aerated,
The solid matter in the gas forms a solid matter layer (powder layer) 3 on the precoat layer 2. At the same time, as shown in FIG. 3, the special reaction aid is constantly injected from the supply device 11 into the exhaust gas duct leading to the above-mentioned filter medium 10, and the powder layer 3
Suppresses consolidation.
これらの層は、時間と共に成長し、その結果、装置の圧
力損失を上昇させる。そこで、ある一定時間間隔をおい
て粉体層を払い落とし、新たに層の形成を上述の態様で
行う。These layers grow over time, resulting in increased pressure drop in the device. Therefore, the powder layer is brushed off at a certain time interval, and a new layer is formed in the above-described mode.
（作用） 以上の本発明装置において、排ガスが粉体層３を通過す
る際に、該排ガス中の未反応塩化水素が該粉体層３中の
消石灰と再度反応し、塩化水素が高効率で除去される。(Operation) In the above-described device of the present invention, when the exhaust gas passes through the powder layer 3, the unreacted hydrogen chloride in the exhaust gas reacts again with the slaked lime in the powder layer 3, and the hydrogen chloride is highly efficient. To be removed.
また、この時、排ガス中のダクトも除去され、集じん効
果を得ることもできる。At this time, the duct in the exhaust gas is also removed, and the dust collecting effect can be obtained.
更に、特殊反応助剤としてアルカリ性のものを使用すれ
ば、排ガス中の硫黄酸化物を除去することができる。Furthermore, when an alkaline special reaction aid is used, sulfur oxides in the exhaust gas can be removed.
また、本発明装置においては、脱硝触媒層４が形成され
ており、予めアンモニアガスが注入された排ガスが該層
４に接触（通過）して窒素酸化物が除去される。Further, in the device of the present invention, the denitration catalyst layer 4 is formed, and the exhaust gas into which ammonia gas has been injected in advance contacts (passes through) the layer 4 to remove nitrogen oxides.
（発明の効果） 本発明装置によれば、次のような効果を奏することがで
きる。(Effect of the Invention) According to the device of the present invention, the following effects can be obtained.
(1)塩化水素と窒素酸化物の双方を高効率で除去するこ
とができ、また集じん効率を高め、かつ硫黄酸化物をも
効果的に除去することができる。(1) Both hydrogen chloride and nitrogen oxides can be removed with high efficiency, dust collection efficiency can be improved, and sulfur oxides can also be effectively removed.
(2)排ガス温度が、従来の２５０℃以下に制限されず、
２５０℃以上の高温度でも処理できる。(2) Exhaust gas temperature is not limited to the conventional 250 ° C or lower,
It can be processed even at a high temperature of 250 ° C. or higher.
(3)ろ材の汚れに対して、取りはずし、水洗することに
より、繰返し使用ができる。(3) It can be used repeatedly by removing dirt from the filter medium and washing it with water.
第１図は本発明装置に係るろ材の一実施態様例を示す
図、第２図は第１図の一部拡大図、第３図は本発明装置
の構成態様例を示す図である。FIG. 1 is a diagram showing an example of an embodiment of a filter medium according to the device of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is a diagram showing an example of the configuration of the device of the present invention.
Claims (1)
ろ材表面の排ガス流入面側に特殊反応助剤プリコート層
を介して消石灰又は炭酸カルシウム及び塩化カルシウム
を含む固形物層を形成し、排ガス流出面側に窒素酸化物
除去用触媒層を設けたことを特徴とする排ガス処理装
置。1. A porous ceramic material is used as a filter medium, and a solid material layer containing slaked lime or calcium carbonate and calcium chloride is formed on the exhaust gas inflow side of the surface of the filter medium via a special reaction aid precoat layer, and the exhaust gas outflow. An exhaust gas treatment device, characterized in that a catalyst layer for removing nitrogen oxides is provided on the surface side.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59230314A JPH0649135B2 (en) | 1984-11-02 | 1984-11-02 | Exhaust gas treatment device |
| EP86730067A EP0242488B1 (en) | 1984-11-02 | 1986-04-22 | Filter medium for treating an exhaust gas |
| US06/854,936 US4728503A (en) | 1984-11-02 | 1986-04-23 | Filter medium for treating an exhaust gas |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59230314A JPH0649135B2 (en) | 1984-11-02 | 1984-11-02 | Exhaust gas treatment device |
| EP86730067A EP0242488B1 (en) | 1984-11-02 | 1986-04-22 | Filter medium for treating an exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61111129A JPS61111129A (en) | 1986-05-29 |
| JPH0649135B2 true JPH0649135B2 (en) | 1994-06-29 |
Family
ID=26106496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59230314A Expired - Lifetime JPH0649135B2 (en) | 1984-11-02 | 1984-11-02 | Exhaust gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649135B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6780817B1 (en) | 1998-12-08 | 2004-08-24 | Japan Energy Corporation | Catalyst for hydrofining and method for preparation thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0655251B2 (en) * | 1985-05-20 | 1994-07-27 | 旭硝子株式会社 | Dust removal purifier |
| KR20020025530A (en) * | 2000-09-29 | 2002-04-04 | 홍민선 | Apparatus for the simultaneous removal of particulates and hydrogen chloride using catalysts doped fibrous ceramic filters |
| JP5535436B2 (en) * | 2004-09-30 | 2014-07-02 | ポール・コーポレーション | Catalytically active porous element |
-
1984
- 1984-11-02 JP JP59230314A patent/JPH0649135B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6780817B1 (en) | 1998-12-08 | 2004-08-24 | Japan Energy Corporation | Catalyst for hydrofining and method for preparation thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61111129A (en) | 1986-05-29 |
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