JPH10128069A - Treatment of waste gas - Google Patents
Treatment of waste gasInfo
- Publication number
- JPH10128069A JPH10128069A JP8293942A JP29394296A JPH10128069A JP H10128069 A JPH10128069 A JP H10128069A JP 8293942 A JP8293942 A JP 8293942A JP 29394296 A JP29394296 A JP 29394296A JP H10128069 A JPH10128069 A JP H10128069A
- Authority
- JP
- Japan
- Prior art keywords
- bag filter
- flue
- alumina
- silica fine
- blown
- 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
- 239000002912 waste gas Substances 0.000 title abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 43
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 22
- 239000010419 fine particle Substances 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 239000013543 active substance Substances 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract description 13
- 239000000920 calcium hydroxide Substances 0.000 abstract description 13
- 235000011116 calcium hydroxide Nutrition 0.000 abstract description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract description 13
- 239000003054 catalyst Substances 0.000 abstract description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 9
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 9
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 abstract 3
- 238000004056 waste incineration Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 239000000126 substance Substances 0.000 description 9
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 7
- 229910052753 mercury Inorganic materials 0.000 description 7
- 239000003463 adsorbent Substances 0.000 description 6
- 239000010813 municipal solid waste Substances 0.000 description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 4
- 229910052815 sulfur oxide Inorganic materials 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 238000011021 bench scale process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、都市ごみ焼却炉に
おける機能性バグフィルタを用いる排ガス処理方法に関
する。The present invention relates to an exhaust gas treatment method using a functional bag filter in a municipal waste incinerator.
【０００２】[0002]
【従来の技術】近年、都市ごみ焼却炉の煤塵除去はダイ
オキシンを生成する電気集塵機に代わりバグフィルタを
用いる例が多くなっている。都市ごみ焼却炉の能力向上
に伴い排ガス量も増加し、排ガス中の煤塵を除去するバ
グフィルタも大容量化している。そのため大型のバグハ
ウスを建設するための設備費、敷地面積も巨大となり実
現が困難になっている。それ故に煤塵除去に加えて他の
有害成分、例えば窒素酸化物、塩化水素等を除去する機
能を備えたバグフィルタが特公平４−３６７２９号公
報、特開平５−８４４１１号公報に提案されている。脱
硝機能を持たせるために脱硝触媒を不織布に担持させた
バグフィルタと、尿素を焼却炉に注入する炉内脱硝とを
組み合わせた高度処理の例がある。また機能性バグフィ
ルタを用いることで排ガス中の煤塵、酸性成分の塩化水
素、硫黄酸化物、窒素酸化物、ダイオキシンを同時に除
去する例がある。2. Description of the Related Art In recent years, dust removal in municipal solid waste incinerators has been increasingly performed using a bag filter instead of an electric dust collector that generates dioxin. As the capacity of municipal solid waste incinerators has increased, the amount of exhaust gas has also increased, and the capacity of bag filters for removing dust in exhaust gas has also increased. Therefore, the equipment cost and the site area for constructing a large-sized baghouse are huge, and it is difficult to realize it. Therefore, a bag filter having a function of removing other harmful components such as nitrogen oxides and hydrogen chloride in addition to dust removal is proposed in Japanese Patent Publication No. 4-36729 and Japanese Patent Application Laid-Open No. 5-84411. . There is an example of advanced treatment in which a bag filter in which a denitration catalyst is carried on a nonwoven fabric to have a denitration function and in-furnace denitration in which urea is injected into an incinerator are combined. In addition, there is an example in which dust in exhaust gas, hydrogen chloride, sulfur oxide, nitrogen oxide, and dioxin in an exhaust gas are simultaneously removed by using a functional bag filter.
【０００３】一方、脱硝触媒を担持させたバグフィルタ
が劣化した場合に廃棄することなく水洗し、脱硝触媒溶
液に浸漬して脱硝触媒を担持させ再び活性を取り戻す技
術が特開平６−２３３９１６号公報に提案されている。[0003] On the other hand, when a bag filter carrying a denitration catalyst deteriorates, it is washed without being discarded without being discarded, immersed in a denitration catalyst solution to carry the denitration catalyst, and regains its activity. Has been proposed.
【０００４】[0004]
【発明が解決しようとする課題】都市ごみ焼却炉の排ガ
ス中には、塩化水素やアルカリ金属の塩化物が多く、塩
化水素は脱硝を行う時に注入する還元剤のアンモニアと
反応して塩化アンモニウムを生成する。また、硫黄酸化
物は同様に一部硫酸アンモニウムを生成する。これらの
生成物は機能性バグフィルタの活性物質である触媒を被
毒させたり、吸着剤の細孔を閉塞させ劣化の主原因とな
る。バグフィルタに担持させた活性物質の量はバグフィ
ルタの厚さやガスの通気抵抗を考慮するとある程度制限
され、従来の活性物質の使用方法に比較してその寿命は
短い。従って活性物質の寿命に支配される機能性バグフ
ィルタの寿命は、バグフィルタ素材の寿命より著しく短
い。このように都市ごみ焼却炉の排ガス処理においてバ
グフィルタの寿命向上に関して考慮がなされず長期使用
に問題がある。The exhaust gas from municipal solid waste incinerators contains a large amount of hydrogen chloride and chlorides of alkali metals. Hydrogen chloride reacts with ammonia as a reducing agent injected during denitration to form ammonium chloride. Generate. In addition, the sulfur oxide also partially produces ammonium sulfate. These products poison the catalyst, which is the active substance of the functional bag filter, and block the pores of the adsorbent, which is a major cause of deterioration. The amount of the active substance carried on the bag filter is limited to some extent in consideration of the thickness of the bag filter and the gas flow resistance, and the life of the active substance is shorter than the conventional method of using the active substance. Thus, the life of a functional bag filter, which is dominated by the life of the active substance, is significantly shorter than the life of the bag filter material. As described above, no consideration is given to improving the life of the bag filter in the exhaust gas treatment of the municipal solid waste incinerator, and there is a problem in long-term use.
【０００５】本発明の目的は、機能性バグフィルタの触
媒の劣化を防止し寿命を向上させることにある。[0005] It is an object of the present invention to prevent deterioration of the catalyst of a functional bag filter and improve the life thereof.
【０００６】[0006]
【課題を解決するための手段】上記目的は、有害成分を
除去する活性物質を担持した機能性バグフィルタを収納
したバグハウスの上流煙道にアルミナまたはシリカ微粒
子を吹き込むことにより達成される。The above object is achieved by blowing fine alumina or silica particles into the upstream flue of a baghouse containing a functional bag filter carrying an active substance for removing harmful components.
【０００７】上記目的は、有害成分を除去する活性物質
を担持した機能性バグフィルタを収納したバグハウスの
上流煙道に比表面積が１５０ｍ2／ｇ以上、細孔容積が
０．３ｃｃ／ｇ以上のアルミナまたはシリカ微粒子を煤
塵量の５重量％以上吹き込むことにより達成される。It is an object of the present invention to provide a baghouse containing a functional bag filter carrying an active substance for removing harmful components and having a specific surface area of 150 m 2 / g or more and a pore volume of 0.3 cc / g or more in an upstream flue of a bag house. By blowing 5% by weight or more of the fine particles of alumina or silica of the dust amount.
【０００８】機能性バグフィルタの上流で吹き込まれた
アルミナまたはシリカ微粒子は、吹き込まれた他の吸着
剤、煤塵と共に機能性バグフィルタの表面に粉体層を形
成し、排ガス中に含まれる細孔閉塞物質が粉体層を通過
する時アルミナまたはシリカ微粒子が細孔閉塞物質を吸
着・除去し、機能性バグフィルタ内の活性物質は細孔閉
塞物質に暴露されないから寿命が向上する。[0008] The alumina or silica fine particles blown upstream of the functional bag filter form a powder layer on the surface of the functional bag filter together with the other adsorbents and dust that have been blown, and pores contained in exhaust gas. When the plugging substance passes through the powder layer, the alumina or silica fine particles adsorb and remove the pore plugging substance, and the active substance in the functional bag filter is not exposed to the pore plugging substance, so that the life is improved.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図に
より説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１は本発明の実施の形態の構成を示すフ
ロウ図である。FIG. 1 is a flow chart showing the configuration of the embodiment of the present invention.
【００１１】本図に示すように都市ごみ焼却炉の排ガス
は煙道９により導かれ、最初に塩化水素、硫黄酸化物を
除去する消石灰が消石灰貯槽５から粉体供給装置４によ
り煙道９内に吹き込まれる。次に排ガス中の窒素酸化物
を還元するアンモニア水がアンモニア水貯槽６からポン
プ７により煙道９内に吹き込まれる。最後に本発明の特
徴であるアルミナまたはシリカ微粒子がアルミナまたは
シリカ微粒子貯槽３から粉体供給装置４により煙道９内
に吹き込まれる。排ガスはバグハウス１に導かれ、煤
塵、塩化水素、硫黄酸化物、窒素酸化物、水銀、ダイオ
キシン等の有害物質が機能性バグフィルタ２に含まれる
活性物質及び煙道９内に吹き込まれた消石灰により除去
される。機能性バグフィルタ２に付着した煤塵、消石
灰、アルミナまたはシリカ微粒子は剥離してバグハウス
１のホツパ部から煤塵貯槽８へ排出される。As shown in this figure, the exhaust gas from the municipal solid waste incinerator is guided by a flue 9, and slaked lime for removing hydrogen chloride and sulfur oxides is first discharged from a slaked lime storage tank 5 into a flue 9 by a powder supply device 4. Is blown into Next, ammonia water for reducing nitrogen oxides in the exhaust gas is blown into the flue 9 from the ammonia water storage tank 6 by the pump 7. Finally, alumina or silica fine particles, which are a feature of the present invention, are blown into the flue 9 by the powder supply device 4 from the alumina or silica fine particle storage tank 3. Exhaust gas is led to the baghouse 1, where harmful substances such as dust, hydrogen chloride, sulfur oxides, nitrogen oxides, mercury, dioxin and the like are contained in the active substance contained in the functional bag filter 2 and slaked lime blown into the flue 9. To be removed. The dust, slaked lime, alumina or silica fine particles adhering to the functional bag filter 2 are separated and discharged from the hopper of the bag house 1 to the dust storage tank 8.
【００１２】図２は本発明の実施の形態の機能性バグフ
ィルタの縦断面図である。FIG. 2 is a longitudinal sectional view of the functional bag filter according to the embodiment of the present invention.
【００１３】本図に示すように機能性バグフィルタ２の
素材中には活性物質１０である脱硝触媒、ダイオキシン
除去用吸着剤、重金属の水銀吸着剤が含まれ、何れも細
孔を有する。機能性バグフィルタ２の表面には煙道９内
に吹き込まれた消石灰１１及びアルミナまたはシリカ微
粒子１２、捕集された煤塵１３による粉体層が形成され
る。この粉体層を排ガスが通過すると排ガス中に含まれ
る細孔閉塞物質がアルミナまたはシリカ微粒子１２に吸
着され、機能性バグフィルタ２に含まれる活性物質１０
は細孔閉塞物質に暴露されないから活性は持続し寿命が
向上する。煙道９内に吹き込む物質はアルミナまたはシ
リカ微粒子１２以外に比表面積１５０ｍ2／ｇ、細孔容
積０．３ｃｃ／ｇ以上の酸化物であれば同等の効果が得
られる。 アルミナまたはシリカ微粒子１２を煙道９内
に吹き込む位置は図１に限定されるものでは無く、機能
性バグフィルタ２の上流であればどの位置でも良い。煙
道９内に吹き込むアルミナまたはシリカ微粒子１２の量
は煤塵量の少なくとも２ｗｔ％以上で５ｗｔ％以上であ
れば申し分無い。As shown in FIG. 1, the material of the functional bag filter 2 contains a denitration catalyst, an adsorbent for removing dioxin, and a mercury adsorbent for heavy metals, which are active substances 10, all of which have pores. A powder layer is formed on the surface of the functional bag filter 2 by slaked lime 11 and alumina or silica fine particles 12 blown into the flue 9 and the collected dust 13. When the exhaust gas passes through the powder layer, the pore blocking substances contained in the exhaust gas are adsorbed by the alumina or silica fine particles 12 and the active substance 10 contained in the functional bag filter 2 is removed.
Is not exposed to pore-blocking substances, so its activity is maintained and its life is improved. The same effect can be obtained if the substance blown into the flue 9 is an oxide having a specific surface area of 150 m 2 / g and a pore volume of 0.3 cc / g or more other than the alumina or silica fine particles 12. The position at which the alumina or silica fine particles 12 are blown into the flue 9 is not limited to that shown in FIG. 1, and may be any position as long as it is upstream of the functional bag filter 2. The amount of the alumina or silica fine particles 12 blown into the flue 9 is satisfactory if it is at least 2 wt% or more and 5 wt% or more of the dust amount.
【００１４】次に本実施の形態を具体的に説明する。Next, this embodiment will be described specifically.
【００１５】実施の形態１ 活性物質１０として脱硝触媒を３８０ｇ／ｍ2担持した
直径１０ｃｍ、長さ１ｍの機能性バグフィルタ２を用
い、アルミナまたはシリカ微粒子１２として塩基性アル
ミナを用い、以下の排ガス条件で図１と同じ構成のベン
チスケール装置で脱硝試験を行った。Embodiment 1 A functional bag filter 2 having a diameter of 10 cm and a length of 1 m carrying 380 g / m 2 of a denitration catalyst was used as an active substance 10, basic alumina was used as alumina or silica fine particles 12, and the following exhaust gas was used. Under the conditions, a denitration test was performed using a bench scale apparatus having the same configuration as that of FIG.
【００１６】排ガス条件 ＮＯｘ濃度 １５０ｐｐｍ ＳＯｘ濃度 ２５０ｐｐｍ ＨＣｌ濃度 ４５０ｐｐｍ Ｈ2Ｏ １５ｖｏｌ％ ＮＨ3／ＮＯ １．２ バグフィルタ条件 温度 ２００℃ 排ガス通過流速 １ｍ／ｍｉｎ 煤塵量 ３０ｇ／Ｎｍ３ 消石灰比 ３．０Ｃａ／（Ｓ＋Ｃｌ） 塩基性アルミナ条件 粒径 ３２５メッシュ以下 比表面積 １８９ｍ２／ｇ 細孔容積 ０．３ｃｃ／ｇ 投入量 １．５ｇ／Ｎｍ3 煤塵量比 ５ｗｔ％ 試験結果 上記条件下で連続７２０時間の脱硝試験を行ったとこ
ろ、脱硝触媒の当初の比表面積１２０ｍ2／ｇは１１６
ｍ2／ｇとなりその低下率は３．３％にとどまった。Exhaust gas conditions NOx concentration 150 ppm SOx concentration 250 ppm HCl concentration 450 ppm H 2 O 15 vol% NH 3 / NO 1.2 Bag filter condition Temperature 200 ° C. Exhaust gas flow velocity 1 m / min Dust amount 30 g / Nm 3 Slaked lime ratio 3.0 Ca / (S + Cl) Basic alumina conditions Particle size 325 mesh or less Specific surface area 189 m 2 / g Pore volume 0.3 cc / g Input amount 1.5 g / Nm 3 Dust amount ratio 5 wt% Test result Denitration for 720 hours continuously under the above conditions The test showed that the initial specific surface area of the denitration catalyst was 120 m 2 / g, 116 m 2 / g.
m 2 / g, and the rate of decrease was only 3.3%.
【００１７】実施の形態２ 活性物質１０として水銀吸着剤のＺｎＩ2を珪藻土に含
浸したものを２００ｇ／ｍ2担持した直径１０ｃｍ、長
さ１ｍの機能性バグフィルタ２を用い、以下の排ガス条
件で図１と同じ構成のベンチスケール装置で水銀除去試
験を行った。Embodiment 2 A functional bag filter 2 having a diameter of 10 cm and a length of 1 m carrying 200 g / m 2 of diatomaceous earth impregnated with a mercury adsorbent ZnI 2 as an active substance 10 was used under the following exhaust gas conditions. A mercury removal test was performed using a bench scale apparatus having the same configuration as that of FIG.
【００１８】 排ガス条件 ＮＯｘ濃度 １５０ｐｐｍ ＳＯｘ濃度 ２５０ｐｐｍ ＨＣｌ濃度 ４５０ｐｐｍ 水銀量 ０．２５ｍｇ／Ｎｍ3（ＨｇＣｌ2換算） Ｈ2Ｏ １５ｖｏｌ％ ＮＨ3／ＮＯ １．２ バグフィルタ条件 温度 １８０℃ 排ガス通過流速 １ｍ／ｍｉｎ 煤塵量 ３０ｇ／Ｎｍ3 消石灰比 ３．０Ｃａ／（Ｓ＋Ｃｌ） 塩基性アルミナ条件 粒径 ３２５メッシュ以下 比表面積 １８９ｍ2／ｇ 細孔容積 ０．３ｃｃ／ｇ 投入量 １．５ｇ／Ｎｍ3 煤塵量比 ５ｗｔ％ 試験結果 上記条件下で連続１２００時間の水銀除去試験を行った
ところ、水銀吸着剤の当初の比表面積３９ｍ2／ｇは３
６ｍ2／ｇとなりその低下率は７．７％にとどまった。Exhaust gas conditions NOx concentration 150 ppm SOx concentration 250 ppm HCl concentration 450 ppm Mercury amount 0.25 mg / Nm 3 (converted to HgCl 2 ) H 2 O 15 vol% NH 3 / NO 1.2 Bag filter conditions Temperature 180 ° C. Exhaust gas flow velocity 1 m / min Dust amount 30 g / Nm 3 Slaked lime ratio 3.0 Ca / (S + Cl) Basic alumina condition Particle size 325 mesh or less Specific surface area 189 m 2 / g Pore volume 0.3 cc / g Input amount 1.5 g / Nm 3 Dust amount ratio 5 wt% Test Result A mercury removal test was performed continuously for 1200 hours under the above conditions. The initial specific surface area of the mercury adsorbent was 39 m 2 / g,
It was 6 m 2 / g, and the rate of decrease was only 7.7%.
【００１９】比較の形態１ 実施の形態１に示した条件下で塩基性アルミナを投入せ
ずで連続７５０時間の脱硝試験を行ったところ、脱硝触
媒の当初の比表面積１２０ｍ2／ｇは７８ｍ2／ｇとなり
その低下率は３５％となった。[0019] was carried out denitration test 750 hours continuous without feeding a basic alumina under the conditions shown in the first embodiment 1 embodiment of the comparison, the initial specific surface area 120 m 2 / g of the denitration catalyst 78m 2 / G, and the rate of decrease was 35%.
【００２０】[0020]
【発明の効果】本発明によれば、機能性バグフィルタの
上流で吹き込まれたアルミナまたはシリカ微粒子は機能
性バグフィルタの表面で排ガス中に含まれる細孔閉塞物
質を吸着・除去するから、機能性バグフィルタ内の活性
物質は細孔閉塞物質に暴露されず寿命が向上する効果が
得られる。According to the present invention, the fine alumina or silica particles blown upstream of the functional bag filter adsorb and remove pore-blocking substances contained in exhaust gas on the surface of the functional bag filter. The active substance in the permeable bag filter is not exposed to the pore blocking substance, and the effect of improving the life is obtained.
【図１】本発明の実施の形態の構成を示すフロウ図であ
る。FIG. 1 is a flowchart showing a configuration of an embodiment of the present invention.
【図２】本発明の実施の形態の機能性バグフィルタの縦
断面図である。FIG. 2 is a longitudinal sectional view of the functional bag filter according to the embodiment of the present invention.
１ バグハウス ２ 機能性バグフィルタ ３ アルミナまたはシリカ微粒子貯槽 ４ 粉体供給装置 ５ 消石灰貯槽 ６ アンモニア水貯槽 ７ ポンプ ８ 煤塵貯槽 ９ 煙道 １０ 活性物質 １１ 消石灰 １２ アルミナまたはシリカ微粒子 １３ 煤塵 REFERENCE SIGNS LIST 1 baghouse 2 functional bag filter 3 alumina or silica fine particle storage tank 4 powder supply device 5 slaked lime storage tank 6 ammonia water storage tank 7 pump 8 dust storage tank 9 flue 10 active substance 11 slaked lime 12 alumina or silica fine particles 13 dust
Claims (2)
機能性バグフィルタを収納したバグハウスの上流煙道に
アルミナまたはシリカ微粒子を吹き込むことを特徴とす
る排ガス処理方法。1. An exhaust gas treatment method comprising blowing alumina or silica fine particles into an upstream flue of a baghouse containing a functional bag filter carrying an active substance for removing harmful components.
機能性バグフィルタを収納したバグハウスの上流煙道に
比表面積が１５０ｍ2／ｇ以上、細孔容積が０．３ｃｃ
／ｇ以上のアルミナまたはシリカ微粒子を煤塵量の５重
量％以上吹き込むことを特徴とする排ガス処理方法。2. The upper stack of a baghouse containing a functional bag filter carrying an active substance for removing harmful components has a specific surface area of 150 m 2 / g or more and a pore volume of 0.3 cc.
/ G or more of alumina or silica fine particles are blown in at 5% by weight or more of the amount of dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8293942A JPH10128069A (en) | 1996-11-06 | 1996-11-06 | Treatment of waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8293942A JPH10128069A (en) | 1996-11-06 | 1996-11-06 | Treatment of waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10128069A true JPH10128069A (en) | 1998-05-19 |
Family
ID=17801178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8293942A Pending JPH10128069A (en) | 1996-11-06 | 1996-11-06 | Treatment of waste gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10128069A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2367594A (en) * | 2000-03-16 | 2002-04-10 | Aksys Ltd | Calibration of pumps such as blood pumps of dialysis machines |
| JP2002219335A (en) * | 2001-01-30 | 2002-08-06 | Babcock Hitachi Kk | Exhaust gas treatment equipment |
| KR100478609B1 (en) * | 2002-07-29 | 2005-03-28 | 김정원 | One body-type waste gas purufier |
| WO2009082072A1 (en) * | 2007-12-21 | 2009-07-02 | Koair Co., Ltd | Dust filtering collector for removing smoke and method for filtering smoke using same |
-
1996
- 1996-11-06 JP JP8293942A patent/JPH10128069A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2367594A (en) * | 2000-03-16 | 2002-04-10 | Aksys Ltd | Calibration of pumps such as blood pumps of dialysis machines |
| JP2002219335A (en) * | 2001-01-30 | 2002-08-06 | Babcock Hitachi Kk | Exhaust gas treatment equipment |
| KR100478609B1 (en) * | 2002-07-29 | 2005-03-28 | 김정원 | One body-type waste gas purufier |
| WO2009082072A1 (en) * | 2007-12-21 | 2009-07-02 | Koair Co., Ltd | Dust filtering collector for removing smoke and method for filtering smoke using same |
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