JP2003129826A - Exhaust emission control method for diesel engine - Google Patents
Exhaust emission control method for diesel engineInfo
- Publication number
- JP2003129826A JP2003129826A JP2001327089A JP2001327089A JP2003129826A JP 2003129826 A JP2003129826 A JP 2003129826A JP 2001327089 A JP2001327089 A JP 2001327089A JP 2001327089 A JP2001327089 A JP 2001327089A JP 2003129826 A JP2003129826 A JP 2003129826A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- catalyst
- adsorbent
- fibrous body
- particulate matter
- 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
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000003463 adsorbent Substances 0.000 claims abstract description 67
- 239000003054 catalyst Substances 0.000 claims abstract description 57
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 31
- 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 31
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000010457 zeolite Substances 0.000 claims abstract description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 60
- 239000007789 gas Substances 0.000 claims description 60
- 239000013618 particulate matter Substances 0.000 claims description 30
- 239000000377 silicon dioxide Substances 0.000 claims description 30
- 239000000446 fuel Substances 0.000 claims description 21
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 21
- 238000011144 upstream manufacturing Methods 0.000 claims description 17
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract 3
- 229920000914 Metallic fiber Polymers 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 101100325793 Arabidopsis thaliana BCA2 gene Proteins 0.000 description 1
- 102100033041 Carbonic anhydrase 13 Human genes 0.000 description 1
- 101000867860 Homo sapiens Carbonic anhydrase 13 Proteins 0.000 description 1
- 101100219325 Phaseolus vulgaris BA13 gene Proteins 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は排ガス等の浄化方法
に関し、詳しくは定置型デイーゼルエンジン等の熱機関
から排出される排ガス中に含有する粒子状物質（以下、
パテイキュレートと呼ぶ）の処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for purifying exhaust gas and the like, more specifically, a particulate matter (hereinafter referred to as a particulate matter) contained in exhaust gas discharged from a heat engine such as a stationary diesel engine.
(Referred to as particulates) processing method.
【０００２】[0002]
【従来の技術】デイーゼルエンジン等の内燃機関から排
出される、窒素酸化物やパテイキュレート等の環境汚染
物質の低減が社会問題として取り上げられる様になって
きており、その低減は緊急の課題となっている。これに
対しては、エンジン燃料の改善、燃料改質、排気後処理
等の対策技術の研究が進められている。2. Description of the Related Art Reduction of environmental pollutants such as nitrogen oxides and particulates emitted from internal combustion engines such as diesel engines has been taken up as a social problem, and the reduction is an urgent issue. ing. In response to this, research on countermeasure technologies such as engine fuel improvement, fuel reforming, and exhaust after-treatment is under way.
【０００３】上記２物質のうち、窒素酸化物の低減及び
除去法に関しては還元剤として尿素、尿素水溶液、アン
モニア、アンモニア水溶液を用いて脱硝することが公知
である。一方、パテイキュレートの除去に関しては金属
繊維フィルター、ハニカム状フィルターあるいはこれら
のフィルターに燃焼触媒を担持してパテイキュレートを
捕集して燃焼除去する方法がある。これらに関しては、
窒素酸化物とパテイキュレートを個別に処理する方法、
さらには、窒素酸化物とパテイキュレートを同時に除去
する方法が日経エコロジー/２０００年８月号に記載さ
れている。Among the above two substances, it is known to use a reducing agent such as urea, an aqueous urea solution, ammonia, or an aqueous ammonia solution for denitration in order to reduce and remove nitrogen oxides. On the other hand, regarding the removal of particulates, there is a method of carrying a combustion catalyst on a metal fiber filter, a honeycomb filter, or these filters to collect the particulates and burn them off. For these,
How to treat nitrogen oxides and particulates separately,
Furthermore, a method for simultaneously removing nitrogen oxides and particulates is described in Nikkei Ecology / August 2000 issue.
【０００４】また、繊維体に触媒を付着して排ガスを浄
化する方法が特願平１１−１６５０３５号に記載されて
いる。Further, Japanese Patent Application No. 11-165035 describes a method of purifying exhaust gas by attaching a catalyst to a fibrous body.
【０００５】[0005]
【発明が解決しようとする課題】デイーゼルエンジンか
らの排ガスに含有するパテイキュレートの着火温度は、
高沸点有機成分については250℃程度で、ススについて
は550℃以上である。したがって、パテイキュレートを
フィルター等で捕集し、捕集したパテイキュレートを燃
焼して除去する方法においてはパテイキュレートの捕集
率及び燃焼性が低下するなどの課題がある。The ignition temperature of the particulates contained in the exhaust gas from the diesel engine is
The high boiling point organic component is about 250 ° C, and the soot is 550 ° C or higher. Therefore, in the method of collecting the particulates with a filter or the like and burning and removing the collected particulates, there is a problem that the collection rate and the combustibility of the particulates decrease.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、
（１）触媒を付着したゼオライト系吸着剤、または、活
性アルミナ系吸着剤等とシリカ系繊維体、あるいは、金
属繊維体との混合層から構成して前記繊維体で主に前記
粒子状物質を捕集し、排ガス中に導入される燃料を前記
触媒付着吸着剤で触媒燃焼し、該燃焼熱により前記捕集
粒子状物質を燃焼して前記混合層を再生する。
（２）触媒を付着したゼオライト系吸着剤、または、活
性アルミナ系吸着剤等と触媒を付着したシリカ系繊維体
との混合層から構成して前記触媒付着繊維体で主に前記
粒子状物質を捕集し、排ガス中に導入される燃料を前記
触媒を付着したシリカ系繊維体、または吸着剤で触媒燃
焼し、該燃焼熱により前記捕集粒子状物質を燃焼して前
記混合層を再生する。
（３）エンジン排ガスの上流側からシリカ系繊維体、ま
たは、金属繊維体層を配し、該層の後流側に触媒を付着
したゼオライト系吸着剤、または、活性アルミナ系吸着
剤層を順次配置して前記繊維体で主に前記粒子状物質を
捕集し、排ガス中に導入される燃料を前記触媒付着吸着
剤で触媒燃焼し、該燃焼熱により前記捕集粒子状物質を
燃焼して前記混合層を再生する。
（４）エンジン排ガスの上流側から触媒を付着したシリ
カ系繊維体層を配し、該層の後流側に触媒を付着したゼ
オライト系吸着剤または、活性アルミナ系吸着剤層を順
次配置して前記触媒付着繊維体で主に前記粒子状物質を
捕集し、排ガス中に導入される燃料を前記触媒を付着し
たシリカ系繊維体、または吸着剤で触媒燃焼し、該燃焼
熱により前記捕集粒子状物質を燃焼して前記混合層を再
生する。
（５）エンジン排ガスの上流側から触媒を付着したゼオ
ライト系吸着剤、または、活性アルミナ系吸着剤等を配
し、該層の後流側にシリカ系繊維体層を順次配置して前
記繊維体で主に前記粒子状物質を捕集し、排ガス中に導
入される燃料を前記触媒を付着した吸着剤で触媒燃焼
し、該燃焼熱により前記捕集粒子状物質を燃焼して前記
混合層を再生する。
（６）エンジン排ガスの上流側から触媒を付着したゼオ
ライト系吸着剤、または、活性アルミナ系吸着剤等を配
し、該層の後流側に触媒を付着したシリカ系繊維体を順
次配置して前記触媒付着繊維体で主に前記粒子状物質を
捕集し、排ガス中に導入される燃料を前記触媒を付着し
たシリカ系繊維体、または吸着剤で触媒燃焼し、該燃焼
熱により前記捕集粒子状物質を燃焼して前記混合層を再
生することを特徴とする。
（７）エンジン排ガスの粒子状物質を除去したのち、窒
素酸化物を除去するようにし、高効率でパテイキュレー
トを捕集すると同時に連続燃焼除去できようにしたもの
である。In order to solve the above-mentioned problems, the present invention provides (1) a zeolite-based adsorbent having a catalyst attached thereto, or an activated alumina-based adsorbent and a silica-based fibrous body, or a metal. Composed of a mixed layer with a fibrous body, the fibrous body mainly collects the particulate matter, the fuel introduced into the exhaust gas is catalytically burned by the catalyst adsorbent, and the trapped by the combustion heat. The particulate matter is burned to regenerate the mixed layer. (2) A catalyst-adhered zeolite-based adsorbent, or a mixed layer of an activated alumina-based adsorbent or the like and a catalyst-adhered silica-based fibrous body, and the catalyst-adhered fibrous body mainly contains the particulate matter. The fuel that is collected and introduced into the exhaust gas is catalytically burned by the silica-based fiber body or the adsorbent to which the catalyst is attached, and the collected particulate matter is burned by the combustion heat to regenerate the mixed layer. . (3) A silica-based fibrous body or a metal fibrous body layer is arranged from the upstream side of the engine exhaust gas, and a zeolite-based adsorbent or activated alumina-based adsorbent layer on which a catalyst is attached is sequentially disposed on the downstream side of the layer. The arranged particulate matter is mainly collected by the fibrous body, the fuel introduced into the exhaust gas is catalytically burned by the catalyst adsorbent, and the collected particulate matter is burned by the combustion heat. Regenerate the mixed layer. (4) A silica-based fibrous material layer with a catalyst attached is arranged from the upstream side of the engine exhaust gas, and a zeolite-based adsorbent with a catalyst attached or an activated alumina-based adsorbent layer is sequentially arranged on the downstream side of the layer. The particulate matter is mainly collected by the catalyst-attached fibrous body, and the fuel introduced into the exhaust gas is catalytically burned by a silica-based fibrous body to which the catalyst is attached, or an adsorbent, and the trapped by the combustion heat. The particulate matter is burned to regenerate the mixed layer. (5) The fibrous body in which a zeolite-based adsorbent having a catalyst attached thereto, an activated alumina-based adsorbent, or the like is disposed from the upstream side of engine exhaust gas, and a silica-based fibrous body layer is sequentially disposed on the downstream side of the layer. Mainly collects the particulate matter, catalytically burns the fuel introduced into the exhaust gas with an adsorbent to which the catalyst is attached, and burns the collected particulate matter by the heat of combustion to form the mixed layer. Reproduce. (6) A zeolite-based adsorbent to which a catalyst is attached, an activated alumina-based adsorbent, or the like is arranged from the upstream side of engine exhaust gas, and a silica-based fibrous body to which a catalyst is attached is sequentially arranged on the downstream side of the layer. The particulate matter is mainly collected by the catalyst-attached fibrous body, and the fuel introduced into the exhaust gas is catalytically burned by a silica-based fibrous body to which the catalyst is attached, or an adsorbent, and the trapped by the combustion heat. It is characterized in that the particulate matter is burned to regenerate the mixed layer. (7) After removing the particulate matter of the engine exhaust gas, the nitrogen oxides are removed so that the particulate matter can be collected with high efficiency and, at the same time, can be continuously burned and removed.
【０００７】[0007]
【発明の実施の形態】以下に、本発明の実施例について
説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
【０００８】図１から図６に本発明の一実施例に用いる
エンジン排ガスの浄化装置の構成を示す。図１に示すエ
ンジン排ガスの浄化装置は、エンジン排ガス１の流路に
シリカ系繊維体あるいは金属系繊維体２と、触媒を担持
したゼオライト系吸着剤あるいは活性アルミナ系吸着剤
３との混合層６と該混合層６に導入される燃料１２で構
成される。1 to 6 show the construction of an engine exhaust gas purifying apparatus used in an embodiment of the present invention. The engine exhaust gas purification apparatus shown in FIG. 1 is a mixed layer 6 of a silica-based fiber body or a metal-based fiber body 2 in a channel of an engine exhaust gas 1 and a zeolite-based adsorbent or activated alumina-based adsorbent 3 carrying a catalyst. And the fuel 12 introduced into the mixed layer 6.
【０００９】図２に示すエンジン排ガスの浄化装置は、
エンジン排ガス１の流路に触媒５を付着したシリカ系繊
維体４と、触媒を担持したゼオライト系吸着剤あるいは
活性アルミナ系吸着剤３との混合層７と該混合層７に導
入される燃料１２で構成される。The engine exhaust gas purifying apparatus shown in FIG.
Mixing layer 7 of silica-based fibrous body 4 having catalyst 5 attached to the flow path of engine exhaust gas 1 and catalyst-supporting zeolite-based adsorbent or activated alumina-based adsorbent 3 and fuel 12 introduced into the mixed layer 7. Composed of.
【００１０】図３に示すエンジン排ガスの浄化装置は、
エンジン排ガス１の上流側にシリカ系繊維体あるいは金
属系繊維体２層を配し、該２層の後流側に触媒を付着し
たゼオライト系吸着剤あるいは活性アルミナ吸着剤３層
を配し、あるいはこれらを交互に配置する層８と該混合
層８に導入される燃料１２から構成される。The engine exhaust gas purifying apparatus shown in FIG.
Two layers of silica-based fibrous body or metal-based fibrous body are arranged on the upstream side of engine exhaust gas 1, and three layers of zeolite-based adsorbent or activated alumina adsorbent to which a catalyst is attached are arranged on the downstream side of the two layers, or It is composed of a layer 8 in which these are alternately arranged and a fuel 12 introduced into the mixed layer 8.
【００１１】図４に示すエンジン排ガスの浄化装置は、
エンジン排ガス１の上流側から触媒５を付着したシリカ
系繊維体４層を配し、該４層の後流側にゼオライト系吸
着剤あるいは活性アルミナ系吸着剤３層等を配し、ある
いはこれらを交互に配置する層９と該混合層９に導入さ
れる燃料１２から構成される。The engine exhaust gas purifying apparatus shown in FIG.
4 layers of the silica-based fiber body to which the catalyst 5 is attached are arranged from the upstream side of the engine exhaust gas 1 and 3 layers of the zeolite-based adsorbent or the activated alumina-based adsorbent are arranged on the downstream side of the 4 layers, or It is composed of alternating layers 9 and fuel 12 introduced into the mixed layer 9.
【００１２】図５に示すエンジン排ガスの浄化装置は、
エンジン排ガス１の上流側から触媒を付着したゼオライ
ト系吸着剤あるいは活性アルミナ系吸着剤３層等を配
し、該層の後流側にシリカ系繊維体２層を配し、あるい
はこれらを交互に配置する層１０と該混合層１０に導入
される燃料１２から構成される。The engine exhaust gas purifying apparatus shown in FIG.
3 layers of zeolite adsorbent or activated alumina adsorbent to which a catalyst is attached are arranged from the upstream side of engine exhaust gas 1 and 2 layers of silica fibrous body are arranged on the downstream side of the layer, or these layers are alternately arranged. It is composed of a layer 10 to be arranged and a fuel 12 introduced into the mixed layer 10.
【００１３】図６に示すエンジン排ガスの浄化装置は、
エンジン排ガス１の上流側から触媒を付着したゼオライ
ト系吸着剤あるいは活性アルミナ系吸着剤３層等を配
し、該層の後流側に触媒５を付着したシリカ系繊維４を
配し、あるいはこれらを交互に配置する層１１と該混合
層１１に導入される燃料１２から構成される。The engine exhaust gas purifying apparatus shown in FIG.
From the upstream side of the engine exhaust gas 1, a zeolite-based adsorbent or an activated alumina-based adsorbent 3 layers, etc., to which a catalyst is attached are arranged, and a silica-based fiber 4 to which a catalyst 5 is attached is arranged on the downstream side of the layer, or these And a fuel 12 introduced into the mixed layer 11.
【００１４】上記シリカ系繊維体２に付着される触媒５
及びゼオライト系及び活性アルミナに付着される触媒
は、公知であるパラジウム系及び白金系触媒が用いられ
るが、これらに限定するものではない。The catalyst 5 attached to the silica fiber body 2
As the catalyst to be attached to the zeolite-based and activated alumina, known palladium-based and platinum-based catalysts are used, but the catalysts are not limited thereto.
【００１５】[0015]
【発明の効果】本発明によれば、細い繊維体を用いるた
め、圧縮成形することによりメッシュの調整が可能とな
りパテイキュレートを高効率で捕集できる。さらに、ガ
ラス繊維体に触媒として例えば公知である白金、あるい
はパラジウム金属を付着し、さらに、触媒を付着したゼ
オライト系吸着剤、または、活性アルミナ系吸着剤との
混合層、あるいは、これらの層を交互に配置することに
より、従来の繊維体に触媒を付着したフィルターに比べ
パテイキュレートの捕集率の向上が図れ、同時に高効率
で連続燃焼除去ができ、パテイキュレート層の再生が効
率よく行われ、運用性の向上が図れる。他の実施例にお
いても同様の性能か、あるいはそれ以上の効率でパテキ
ュレートを捕集できると共に燃焼除去できる効果がある。According to the present invention, since a fine fibrous body is used, the mesh can be adjusted by compression molding, and the particulates can be collected with high efficiency. Further, for example, platinum or palladium metal, which is publicly known as a catalyst, is attached to the glass fiber body, and further, a zeolite-based adsorbent to which a catalyst is attached, or a mixed layer with an activated alumina-based adsorbent, or these layers are formed. By arranging them alternately, the collection rate of particulates can be improved as compared with the conventional filter in which the catalyst is attached to the fibrous body, and at the same time, continuous combustion removal can be performed with high efficiency, and the particulate layer can be efficiently regenerated. , Operability can be improved. In the other examples, the particulate matter can be collected and burned off with the same performance or higher efficiency.
【図１】本発明によるエンジンの排ガスのパテイキュレ
ート浄化装置の一実施例の構成図。FIG. 1 is a configuration diagram of an embodiment of an exhaust gas particulate purification apparatus for an engine according to the present invention.
【図２】図１の変形実施例図。FIG. 2 is a diagram of a modified example of FIG.
【図３】図１の変形実施例図。FIG. 3 is a diagram of a modified example of FIG.
【図４】図１の変形実施例図。FIG. 4 is a modification example diagram of FIG.
【図５】図１の変形実施例図。FIG. 5 is a diagram of a modified example of FIG.
【図６】図１の変形実施例図。FIG. 6 is a diagram of a modified example of FIG. 1.
１…デイーゼルエンジン排ガス、２…ガラス繊維体、あ
るいは金属系繊維体、３…触媒５を付着したゼオライト
系吸着剤及び活性アルミナ系吸着剤、４…触媒５を付着
したガラス繊維体、５…触媒、６…シリカ繊維体、ある
いは金属系繊維体２と触媒５を付着したゼオライト系吸
着剤、または、活性アルミナ系吸着剤３との混合層、７
…エンジン排ガス１の上流側に触媒５を付着したシリカ
系繊維体４と該繊維体４層の後流側に触媒５を付着した
ゼオライト系吸着剤、または、活性アルミナ系吸着剤３
を配置する混合層、８…エンジン排ガス１の上流側から
シリカ系繊維体、あるいは金属系繊維体２層と、該２層
の後流側にゼオライト系吸着剤、または、活性アルミナ
系吸着剤３層等を配し、これらを交互に配置する層、９
…エンジン排ガス１の上流側から触媒５を付着したガラ
ス繊維体４層と該４層の後流側に触媒５を付着したゼオ
ライト系吸着剤、または、活性アルミナ系吸着剤３層と
を配し、これらを交互に配置する層、１０…エンジン排
ガス１の上流側から触媒５を付着したゼオライト系吸着
剤、または、活性アルミナ系吸着剤３層等を配し、該層
３の後流側にシリカ系繊維体２を配し、これらを交互に
配置する層、１１…エンジン排ガス１の上流側から触媒
５を付着したゼオライト系吸着剤、または、活性アルミ
ナ系吸着剤３層等を配し、該層３の後流側に触媒５を付
着したシリカ系繊維体４層を配し、これらを交互に配置
する層、１２…パテイキュレートを燃焼する燃料。1 ... Diesel engine exhaust gas, 2 ... Glass fiber body, or metal fiber body, 3 ... Zeolite-based adsorbent and activated alumina-based adsorbent with catalyst 5 attached, 4 ... Glass fiber body with catalyst 5 attached, 5 ... Catalyst , 6 ... Silica fibrous body or mixed layer of metal-based fibrous body 2 and zeolite-based adsorbent to which catalyst 5 is attached, or activated alumina-based adsorbent 3,
... Silica-based fibrous body 4 with catalyst 5 attached on the upstream side of engine exhaust gas 1 and zeolite-based adsorbent or activated alumina-based adsorbent 3 with catalyst 5 attached on the downstream side of the fibrous body 4 layer
Mixed layer, 8 ... Silica-based fiber body or metal-based fiber body 2 layers from the upstream side of engine exhaust gas 1 and zeolite-based adsorbent or activated alumina-based adsorbent 3 on the downstream side of the two layers Layers, etc. arranged, and these arranged alternately 9
The glass fibrous body 4 layers having the catalyst 5 attached thereto from the upstream side of the engine exhaust gas 1 and the zeolite-based adsorbent having the catalyst 5 attached thereto or the activated alumina-based adsorbent 3 layers are provided on the downstream side of the four layers. , Layers in which these are alternately arranged, 10 ... Zeolite-based adsorbent to which the catalyst 5 is attached, or activated alumina-based adsorbent 3 layers, etc. are arranged from the upstream side of the engine exhaust gas 1 and the downstream side of the layer 3 is provided. A layer in which the silica-based fibrous body 2 is arranged, and these are alternately arranged, 11 ... A zeolite-based adsorbent to which the catalyst 5 is attached from the upstream side of the engine exhaust gas 1, or an activated alumina-based adsorbent 3 layers are arranged. A layer in which four layers of the silica-based fiber body to which the catalyst 5 is attached are arranged on the downstream side of the layer 3, and the layers are alternately arranged, 12 ... Fuel for burning particulates.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０１Ｊ 35/06 Ｂ０１Ｄ 53/36 １０３Ｂ Ｆ０１Ｎ 3/08 53/34 １２９Ｂ 3/24 ＺＡＢ (72)発明者 市川 伸一 茨城県日立市大みか町七丁目２番１号 株 式会社日立製作所電力・電機開発研究所内 (72)発明者 山下 寿生 茨城県日立市大みか町七丁目２番１号 株 式会社日立製作所電力・電機開発研究所内 (72)発明者 松島 徳紀 茨城県日立市幸町三丁目２番２号 株式会 社日立エンジニアリングサービス内 Ｆターム(参考） 3G090 AA03 BA01 EA01 3G091 AA18 AB13 AB16 BA13 BA14 CA17 4D002 AA12 AC10 BA16 DA07 DA57 EA01 4D048 AA06 AA14 AB01 AB02 AC03 BA03X BA06X BA11X BA30X BA31X BA39X BA41X CD05 EA04 4G069 AA03 AA11 BA01A BA01B BA02A BA02B BA07A BA07B BA17 BB02A BB02B BC72B BC75B CA03 CA07 CA08 CA13 CA18 DA06 EA03X EA03Y EA09 ZA00 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B01J 35/06 B01D 53/36 103B F01N 3/08 53/34 129B 3/24 ZAB (72) Inventor Ichikawa Shinichi 7-2 Omika-cho, Hitachi City, Ibaraki Prefecture, Ltd. Power & Electricity Development Laboratory, Hitachi, Ltd. (72) Inventor Hisao Yamashita 7-2-1 Omika-cho, Hitachi City, Hitachi, Ltd. Hitachi, Ltd. Electric Power Co., Ltd. (72) Inventor Tokunori Matsushima 3-2-2, Sachimachi, Hitachi City, Ibaraki Hitachi Engineering Service F-term (reference) 3G090 AA03 BA01 EA01 3G091 AA18 AB13 AB16 BA13 BA14 CA17 4D002 AA12 AC10 BA16 DA07 DA57 EA01 4D048 AA06 AA14 AB01 AB02 AC03 BA03X BA06X BA11X BA30X BA31X BA39X BA41X CD05 EA04 4G069 AA03 AA11 BA01A BA01B BA02A BA02B BA07A BA07B BA17 BB02A BB02B BC72B BC75B CA03 CA07 CA08 CA13 CA18 DA06 EA03X EA03Y EA09 ZA00
Claims (7)
別に供給し、高温下でアンモニアに分解してデイーゼル
エンジンの排ガス中の窒素酸化物を還元し、かつ、排ガ
ス中の粒子状物質を除去する方法において、 触媒を付着したゼオライト系吸着剤、または、活性アル
ミナ系吸着剤等とシリカ系繊維体、あるいは、金属繊維
体との混合層から構成して前記繊維体で主に前記粒子状
物質を捕集し、排ガス中に導入される燃料を前記触媒付
着吸着剤で触媒燃焼し、該燃焼熱により前記捕集粒子状
物質を燃焼して前記混合層を再生することを特徴とする
デイーゼルエンジン排ガスの浄化方法。1. A urea aqueous solution, or urea and water are separately supplied, decomposed into ammonia at a high temperature to reduce nitrogen oxides in the exhaust gas of a diesel engine, and to remove particulate matter in the exhaust gas. In the removal method, a zeolite-based adsorbent to which a catalyst is attached, or a mixed layer of an activated alumina-based adsorbent and the like and a silica-based fibrous body, or a metal fibrous body, A diesel that collects a substance, catalytically burns the fuel introduced into the exhaust gas with the catalyst adsorbent, and burns the trapped particulate matter by the heat of combustion to regenerate the mixed layer. How to purify engine exhaust gas.
法において、 触媒を付着したゼオライト系吸着剤、または、活性アル
ミナ系吸着剤等と触媒を付着したシリカ系繊維体との混
合層から構成して前記触媒付着繊維体で主に前記粒子状
物質を捕集し、排ガス中に導入される燃料を前記触媒を
付着したシリカ系繊維体、または吸着剤で触媒燃焼し、
該燃焼熱により前記捕集粒子状物質を燃焼して前記混合
層を再生することを特徴とするデイーゼルエンジン排ガ
スの浄化方法。2. The method for purifying engine exhaust gas according to claim 1, comprising a zeolite-based adsorbent to which a catalyst is attached, or a mixed layer of an activated alumina-based adsorbent and the like and a silica-based fibrous body to which a catalyst is attached. The particulate matter is mainly collected by the catalyst-adhered fiber body, and the fuel introduced into the exhaust gas is catalytically burned by the silica-based fiber body to which the catalyst is adhered, or an adsorbent,
A method for purifying exhaust gas from a diesel engine, characterized in that the collected particulate matter is burned by the combustion heat to regenerate the mixed layer.
方法において、 エンジン排ガスの上流側からシリカ系繊維体、または、
金属繊維体層を配し、該層の後流側に触媒を付着したゼ
オライト系吸着剤、または、活性アルミナ系吸着剤層を
順次配置して前記繊維体で主に前記粒子状物質を捕集
し、排ガス中に導入される燃料を前記触媒付着吸着剤で
触媒燃焼し、該燃焼熱により前記捕集粒子状物質を燃焼
して前記混合層を再生することを特徴とするデイーゼル
エンジン排ガスの浄化方法。3. The method for purifying exhaust gas of an engine according to claim 1, wherein a silica-based fibrous body is provided from the upstream side of the engine exhaust gas, or
A metal fibrous body layer is arranged, and a zeolite-based adsorbent having a catalyst attached thereto or an activated alumina-based adsorbent layer is sequentially arranged on the downstream side of the layer, and the fibrous body mainly collects the particulate matter. Then, the fuel introduced into the exhaust gas is catalytically burned by the catalyst adsorbent, and the collected particulate matter is burned by the combustion heat to regenerate the mixed layer, thereby purifying a diesel engine exhaust gas. Method.
法において、 エンジン排ガスの上流側から触媒を付着したシリカ系繊
維体層を配し、該層の後流側に触媒を付着したゼオライ
ト系吸着剤または、活性アルミナ系吸着剤層を順次配置
して前記触媒付着繊維体で主に前記粒子状物質を捕集
し、排ガス中に導入される燃料を前記触媒を付着したシ
リカ系繊維体、または吸着剤で触媒燃焼し、該燃焼熱に
より前記捕集粒子状物質を燃焼して前記混合層を再生す
ることを特徴とするデイーゼルエンジン排ガスの浄化方
法。4. The method for purifying engine exhaust gas according to claim 1, wherein a silica-based fibrous body layer on which a catalyst is attached is arranged from an upstream side of the engine exhaust gas, and a zeolite-based adsorption on which a catalyst is attached is provided on a downstream side of the layer. Agent or activated alumina-based adsorbent layers are sequentially arranged to collect the particulate matter mainly in the catalyst-adhered fibrous body, and the fuel introduced into the exhaust gas is a silica-based fibrous body to which the catalyst is adhered, or A method for purifying a diesel engine exhaust gas, comprising catalytically burning with an adsorbent, and burning the collected particulate matter by the heat of combustion to regenerate the mixed layer.
法において、 エンジン排ガスの上流側から触媒を付着したゼオライト
系吸着剤、または、活性アルミナ系吸着剤等を配し、該
層の後流側にシリカ系繊維体層を順次配置して前記繊維
体で主に前記粒子状物質を捕集し、排ガス中に導入され
る燃料を前記触媒を付着した吸着剤で触媒燃焼し、該燃
焼熱により前記捕集粒子状物質を燃焼して前記混合層を
再生することを特徴とするデイーゼルエンジン排ガスの
浄化方法。5. The method for purifying engine exhaust gas according to claim 1, wherein a zeolite-based adsorbent having a catalyst adhered thereto, an activated alumina-based adsorbent, or the like is disposed from the upstream side of the engine exhaust gas, and the downstream side of the layer. The silica-based fibrous body layers are sequentially arranged in the above to collect the particulate matter mainly in the fibrous body, and the fuel introduced into the exhaust gas is catalytically burned by the adsorbent to which the catalyst is adhered, and the combustion heat is used. A method for purifying a diesel engine exhaust gas, which comprises burning the collected particulate matter to regenerate the mixed layer.
法において、 エンジン排ガスの上流側から触媒を付着したゼオライト
系吸着剤、または、活性アルミナ系吸着剤等を配し、該
層の後流側に触媒を付着したシリカ系繊維体を順次配置
して前記触媒付着繊維体で主に前記粒子状物質を捕集
し、排ガス中に導入される燃料を前記触媒を付着したシ
リカ系繊維体、または吸着剤で触媒燃焼し、該燃焼熱に
より前記捕集粒子状物質を燃焼して前記混合層を再生す
ることを特徴とするデイーゼルエンジン排ガスの浄化方
法。6. The method for purifying engine exhaust gas according to claim 1, wherein a zeolite-based adsorbent having a catalyst adhered thereto, an activated alumina-based adsorbent, or the like is arranged from the upstream side of the engine exhaust gas, and the downstream side of the layer. In order to collect the particulate matter mainly in the catalyst-adhered fibrous body by sequentially arranging the silica-based fibrous body to which a catalyst is attached, the fuel introduced into the exhaust gas is a silica-based fibrous body to which the catalyst is attached, or A method for purifying a diesel engine exhaust gas, comprising catalytically burning with an adsorbent, and burning the collected particulate matter by the heat of combustion to regenerate the mixed layer.
の粒子状物質を除去したのち、窒素酸化物を除去するこ
とを特徴とするエンジン排ガスの浄化方法。7. The method for purifying engine exhaust gas according to claim 1, wherein the particulate matter of the engine exhaust gas is removed and then nitrogen oxides are removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001327089A JP2003129826A (en) | 2001-10-25 | 2001-10-25 | Exhaust emission control method for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001327089A JP2003129826A (en) | 2001-10-25 | 2001-10-25 | Exhaust emission control method for diesel engine |
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| Publication Number | Publication Date |
|---|---|
| JP2003129826A true JP2003129826A (en) | 2003-05-08 |
Family
ID=19143360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001327089A Pending JP2003129826A (en) | 2001-10-25 | 2001-10-25 | Exhaust emission control method for diesel engine |
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| Country | Link |
|---|---|
| JP (1) | JP2003129826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010501326A (en) * | 2006-08-19 | 2010-01-21 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | Catalyst-coated diesel particulate filter, process for its production and use thereof |
-
2001
- 2001-10-25 JP JP2001327089A patent/JP2003129826A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010501326A (en) * | 2006-08-19 | 2010-01-21 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | Catalyst-coated diesel particulate filter, process for its production and use thereof |
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