JP2003056328A - Exhaust gas disposing device - Google Patents

Exhaust gas disposing device

Info

Publication number
JP2003056328A
JP2003056328A JP2001249704A JP2001249704A JP2003056328A JP 2003056328 A JP2003056328 A JP 2003056328A JP 2001249704 A JP2001249704 A JP 2001249704A JP 2001249704 A JP2001249704 A JP 2001249704A JP 2003056328 A JP2003056328 A JP 2003056328A
Authority
JP
Japan
Prior art keywords
exhaust gas
catalyst
support
particles
treating apparatus
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
Application number
JP2001249704A
Other languages
Japanese (ja)
Inventor
Nobutaka Goshima
伸隆 五嶋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP2001249704A priority Critical patent/JP2003056328A/en
Publication of JP2003056328A publication Critical patent/JP2003056328A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Processes For Solid Components From Exhaust (AREA)
  • Filtering Materials (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust gas disposing device exhibiting superior exhaust emission control efficiency for any components and superior energy efficiency for an exhaust emission control device for exhaust gas containing both of volatile organic compounds and carbon fine particles. SOLUTION: This exhaust gas disposing device for burning and removing the volatile organic compounds and the carbon fine particles in the exhaust gas is constituted by a catalyst body comprising catalyst particles comprising platinum group noble metal particles and a supporting body for supporting the catalyst particles, and a filter contacted and provided on at least one of the upstream and/or the downstream of the catalyst body. The supporting body of the catalyst body comprises a conductive material having a specific resistance value of 1×10<-4> Ω.cm to 1×10<-3> Ω.cm.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、排ガス処理装置に
関する。詳しくは、ディーゼル排ガス等のような揮発性
有機化合物及び炭素微粒子を含む排ガスを燃焼処理する
ための装置に関する。
TECHNICAL FIELD The present invention relates to an exhaust gas treatment device. More specifically, the present invention relates to an apparatus for combusting an exhaust gas containing volatile organic compounds such as diesel exhaust gas and carbon fine particles.

【0002】[0002]

【従来の技術】ディーゼルエンジンより排出されるディ
ーゼル排ガス等のように、排ガスの多くには揮発性有機
化合物に加えて、微細な炭素粒子が含有されている。こ
れら排ガス中の含有物は、いずれも人体に対する影響が
懸念されているが、特に、炭素微粒子についてはその粒
径が極めて細かいため固体状であっても大気中に浮遊し
やすく、人体へ取り込まれやすいという問題がある。従
って、適当な排ガス処理の必要性が迫られる。
2. Description of the Related Art Most of exhaust gas such as diesel exhaust gas discharged from a diesel engine contains fine carbon particles in addition to volatile organic compounds. All of the substances contained in the exhaust gas are concerned about the influence on the human body. Especially, since the particle size of carbon fine particles is extremely fine, even if they are solid, they easily float in the atmosphere and are taken into the human body. There is a problem that it is easy. Therefore, there is an urgent need for proper exhaust gas treatment.

【0003】ここで、排ガス処理法としては、例えば、
排気系にフィルターを設置しこのフィルターで炭素微粒
子を捕集するものが多い。そして、フィルターに捕集さ
れる炭素微粒子はフィルターを加熱して燃焼させること
で再生させる。また、揮発性有機化合物の処理について
は、白金等の貴金属触媒体により燃焼して排ガスを浄化
する手法が多く採られる。
Here, as an exhaust gas treatment method, for example,
In many cases, a filter is installed in the exhaust system to collect carbon fine particles. Then, the carbon fine particles collected on the filter are regenerated by heating and burning the filter. Regarding the treatment of volatile organic compounds, many methods of purifying exhaust gas by burning with a noble metal catalyst such as platinum are adopted.

【0004】これら従来の排ガス処理法には以下のよう
な問題がある。即ち、フィルターによる炭素微粒子除去
においては、微粒子の除去能力はフィルターの孔径によ
り作用されるが、除去能力を高めようと孔径を小径とす
ると排ガスのフィルター通過時の圧力損失を上昇させる
こととなる。従って、フィルターの孔径を小さくするの
にも限界があり、微粒子の除去能力にも限界が生じるこ
ととなる。
These conventional exhaust gas treatment methods have the following problems. That is, in the removal of carbon fine particles by the filter, the fine particle removing ability is affected by the pore diameter of the filter, but if the pore diameter is made small to increase the removing ability, the pressure loss of exhaust gas when passing through the filter is increased. Therefore, there is a limit in reducing the pore size of the filter, and there is a limit in the ability to remove fine particles.

【0005】また、触媒体による排ガス中の有機化合物
燃焼についても、触媒による燃焼反応を生じさせるため
には処理対象ガスを十分加熱昇温させる必要があるが、
そのためには触媒体に導入前に電気ヒーター等により排
ガスを加熱している。しかし、この従来の手法では処理
装置の大型化を招くことに加え、予熱された排ガスは触
媒体導入前に温度低下するおそれもあることからエネル
ギー効率的にも無駄が生じていると考えられる。
In addition, regarding the combustion of the organic compound in the exhaust gas by the catalyst, it is necessary to sufficiently heat and raise the temperature of the gas to be treated in order to cause the combustion reaction by the catalyst.
For that purpose, the exhaust gas is heated by an electric heater or the like before being introduced into the catalyst body. However, in this conventional method, in addition to the increase in the size of the processing apparatus, the temperature of the preheated exhaust gas may decrease before the introduction of the catalyst body.

【0006】近年の環境に対する関心の高さから、排ガ
ス処理においてもより精度の高いものが求められる一方
で、よりエネルギーロスの少ない状態での排ガス処理も
重要である。
[0006] In recent years, due to the growing interest in the environment, more precise exhaust gas treatment is required, but it is also important to treat exhaust gas in a state where energy loss is smaller.

【0007】[0007]

【発明が解決しようとする課題】そこで本発明は、揮発
性有機化合物及び炭素微粒子の双方を含有する排ガスの
浄化処理装置について、いずれの成分に対しても優れた
浄化効率を有し、且つ、エネルギー効率にも優れた排ガ
ス処理装置を提供することを目的とした。
Therefore, the present invention relates to an exhaust gas purification treatment apparatus containing both a volatile organic compound and carbon fine particles, which has excellent purification efficiency for any of the components, and It is an object of the present invention to provide an exhaust gas treatment device having excellent energy efficiency.

【0008】[0008]

【課題を解決するための手段】本発明者らは、鋭意検討
を行ない、揮発性有機化合物と炭素微粒子とを同時に処
理するために、触媒体とフィルターとを同時に適用する
のが必要であるとした。そして、その上でフィルターの
除去効率の向上と触媒反応を生じさせるための排ガスの
加熱の効率化を実現する方法として、触媒体自体を加熱
しこれをフィルターに接触させることを見出し本発明に
係る排ガス処理装置に想到した。
Means for Solving the Problems The inventors of the present invention have made earnest studies, and it is necessary to apply a catalyst body and a filter at the same time in order to simultaneously treat a volatile organic compound and carbon fine particles. did. And, as a method for realizing the improvement of the removal efficiency of the filter and the efficiency of the heating of the exhaust gas for causing the catalytic reaction on that, it is found that the catalyst body itself is heated and brought into contact with the filter. Invented exhaust gas treatment equipment.

【0009】即ち、本発明は、排ガス中の揮発性有機化
合物及び炭素微粒子を燃焼除去するための排ガス処理装
置であって、白金族金属粒子からなる触媒粒子と該触媒
粒子を支持する支持体とからなる触媒体と、該触媒体の
上流側及び/又は下流側の少なくとも一方の面に接触配
置されるフィルターとからなり、前記触媒体の前記支持
体は比抵抗値1×10−4Ω・cm〜cm〜1×10
−3Ω・cmの導電材料よりなる排ガス処理装置であ
る。
That is, the present invention is an exhaust gas treating apparatus for burning and removing volatile organic compounds and carbon fine particles in exhaust gas, which comprises catalyst particles composed of platinum group metal particles and a support for supporting the catalyst particles. And a filter placed in contact with at least one of the upstream side and / or the downstream side of the catalyst body, and the support of the catalyst body has a specific resistance value of 1 × 10 −4 Ω · cm-cm-1 x 10
An exhaust gas treatment device made of a conductive material of -3 Ω · cm.

【0010】本発明は、触媒体自体を加熱することで、
排ガスの加熱において触媒体導入前の加熱手段を不要と
するものである。これにより処理装置全体をコンパクト
とすると共に、排ガス加熱のエネルギーロスも低減でき
る。そして、本発明は加熱した触媒体とフィルターとを
接触させることで、フィルターを加熱しフィルター上に
捕集された炭素粒子を燃焼させ、更に、フィルターでは
捕集できないような微細な炭素粒子は触媒により燃焼さ
せるものである。従って、炭素微粒子の除去効率に優れ
ると共に、捕集した炭素微粒子は燃焼除去されることか
らフィルターの再生も不要となる。
According to the present invention, by heating the catalyst itself,
In heating the exhaust gas, the heating means before introducing the catalyst is not required. As a result, the entire processing apparatus can be made compact, and the energy loss of exhaust gas heating can be reduced. And the present invention, by contacting the heated catalyst body and the filter, the filter is heated to burn the carbon particles collected on the filter, and the fine carbon particles that cannot be collected by the filter are catalysts. Is to be burned by. Therefore, the removal efficiency of the carbon fine particles is excellent, and since the collected carbon fine particles are burned and removed, it is not necessary to regenerate the filter.

【0011】以下、本発明につき詳細に説明する。本発
明では触媒体自体を加熱するものであるが、この触媒体
の加熱は、触媒粒子を支持する支持体の構成材料を通電
することにより発生する抵抗熱を利用するものである。
そこで、本発明で適用する支持体は、比抵抗値1×10
−4Ω・cm〜cm〜1×10−3Ω・cmの導電材料
からなるものを適用する。例えば、Ni−Cr合金、F
e−Cr合金を適するのが好ましく、Fe−Cr合金は
耐食性が必要となる排ガスの処理に対して好適な材料で
ある。
The present invention will be described in detail below. In the present invention, the catalyst body itself is heated, but the heating of the catalyst body utilizes resistance heat generated by energizing the constituent material of the support body supporting the catalyst particles.
Therefore, the support applied in the present invention has a specific resistance value of 1 × 10 5.
A material made of a conductive material of −4 Ω · cm to cm × 1 × 10 −3 Ω · cm is used. For example, Ni-Cr alloy, F
An e-Cr alloy is preferred, and an Fe-Cr alloy is a suitable material for treating exhaust gas that requires corrosion resistance.

【0012】また、この支持体は、排ガスの通過のため
にガスの通過方向に沿った孔を有するものが用いられる
が、本発明で使用する支持体は、その形状を網体とし、
その開孔率は40〜90%とするのが好ましい。網体と
するのは、圧力損失を低減すると共に強度確保を図るた
めである。そして、開孔率を40〜90%とするのは、
40%未満では通過する排ガスの圧力損失が大きくなる
一方、開孔率が90%を超えると支持体強度が極度に低
下するからである。
Further, this support is used which has holes along the passage direction of gas for passage of exhaust gas. The support used in the present invention has a mesh shape,
The porosity is preferably 40 to 90%. The mesh is used to reduce pressure loss and ensure strength. The reason why the porosity is 40 to 90% is
If it is less than 40%, the pressure loss of the exhaust gas passing therethrough will be large, while if the porosity is more than 90%, the strength of the support will be extremely reduced.

【0013】また、この触媒体は厚さ50〜100μm
のセラミック材料からなるコーティングを備えたものと
し、触媒体はこの支持体のコーティングに触媒粒子を分
散担持させるのが好ましい。コーティングを構成するセ
ラミックはいずれも多孔質体であり、このようにコーテ
ィング層に触媒粒子を分散させることにより、触媒体の
有効表面積を拡大し、より効率的に排ガスの燃焼反応を
生じさせることができるからである。
The catalyst body has a thickness of 50 to 100 μm.
It is preferable that the catalyst body is provided with a coating made of a ceramic material, and the catalyst body has the catalyst particles dispersed and supported on the coating of the support. All of the ceramics that make up the coating are porous bodies, and by dispersing the catalyst particles in the coating layer in this way, the effective surface area of the catalyst body can be expanded and a combustion reaction of exhaust gas can be generated more efficiently. Because you can.

【0014】そして、触媒粒子の担持量は、触媒粒子が
支持体表面積に対して0.1〜5g/mとするのが好
ましい。0.1g/m未満の担持量では燃焼反応が生
じ難い一方、5g/mを超えて担持しても触媒体の活
性を大きく上昇させることができず、触媒粒子の無駄と
なるからである。特に、本発明で使用する触媒粒子は白
金等の貴金属よりなるものであり無駄のない利用が好ま
しい。尚、この支持体表面積とは、上記したセラミック
コーティングがされている場合は、このコーティング層
の表面積を含めたものを指す。
The amount of the catalyst particles supported is preferably 0.1 to 5 g / m 2 with respect to the surface area of the support. When the loading amount is less than 0.1 g / m 2 , the combustion reaction is unlikely to occur, but when the loading amount exceeds 5 g / m 2 , the activity of the catalyst cannot be significantly increased and the catalyst particles are wasted. is there. In particular, the catalyst particles used in the present invention are made of a noble metal such as platinum, and it is preferable to use them without waste. The surface area of the support includes the surface area of the coating layer when the above-mentioned ceramic coating is applied.

【0015】一方、触媒体に接触するフィルターは、ア
ルミナ、炭化ケイ素、二酸化ケイ素よりなる織布を用い
ることが好ましい。フィルターの構成材料をアルミナ、
炭化ケイ素、二酸化ケイ素とするのは、これらの材料は
耐熱性が良好であることに加え、熱伝導率も良好である
ことから、触媒体により加熱されても燃焼、崩壊するこ
とがなく、捕集された炭素微粒子を効率的に燃焼させる
ことができるからである。そして、その形態を織布とす
るのは、1μm以下の微細な炭素微粒子を捕捉するため
である。このフィルターは、線径1〜10μmの繊維を
空間率が20〜60%、厚さ0.5mm〜5mm程度と
なるように織り込んだものを適用するのが好ましい。炭
素微粒子を効率的に捕捉しつつ圧力損失が過大にならな
いように係る範囲とするものである。
On the other hand, it is preferable to use a woven fabric made of alumina, silicon carbide, or silicon dioxide for the filter that comes into contact with the catalyst. Alumina is the constituent material of the filter,
Since silicon carbide and silicon dioxide have good heat resistance as well as good thermal conductivity, they do not burn or disintegrate even when heated by a catalyst, This is because the collected carbon fine particles can be efficiently burned. The woven fabric is used to capture fine carbon fine particles of 1 μm or less. As this filter, it is preferable to apply a fiber having a wire diameter of 1 to 10 μm woven so as to have a porosity of 20 to 60% and a thickness of about 0.5 mm to 5 mm. The range is set so as to prevent the pressure loss from becoming excessive while efficiently capturing the carbon fine particles.

【0016】ここで、本発明で使用する触媒体には、支
持体と略同一の断面形状を有し、ステンレスからなる補
強板を触媒体の下流側に配置するのが好ましい。支持体
として網体を用いる場合、開孔率を上昇させると支持体
強度の低下により排ガス圧力により変形を生じるおそれ
があることから、補強板を設置することでこれを防止す
るものである。補強板の形状を支持体と略同一とするの
は、補強版が支持体の孔の一部又は全部を塞ぎ圧力損失
が低下するのを防止するためであり、構成材料をステン
レスとするのは耐熱性を考慮したものである。
Here, it is preferable that the catalyst body used in the present invention has a reinforcing plate having substantially the same cross-sectional shape as the support body and made of stainless steel, which is disposed on the downstream side of the catalyst body. When a mesh is used as the support, if the porosity is increased, the strength of the support may be reduced and the exhaust gas pressure may cause deformation. Therefore, a reinforcing plate is installed to prevent this. The reason why the shape of the reinforcing plate is substantially the same as that of the support is to prevent the reinforcing plate from blocking a part or all of the holes of the support to reduce the pressure loss, and the constituent material is stainless steel. The heat resistance is taken into consideration.

【0017】[0017]

【発明の実施の形態】以下、本発明の好適と思われる実
施の形態について説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below.

【0018】図1は、本実施形態における排ガス処理装
置1の外観を概略図示するものである。図1において、
排ガス処理装置1は、2枚のフィルター2が触媒体3を
挟持してなるものである。これらフィルター2及び触媒
体3は、これらを保持する筒体4内に挿入されている。
そして、触媒体3は図示せぬ電源装置に接続されており
通電加熱するようになっている。
FIG. 1 schematically shows the external appearance of the exhaust gas treating apparatus 1 in this embodiment. In FIG.
The exhaust gas treatment device 1 is composed of two filters 2 sandwiching a catalyst body 3. The filter 2 and the catalyst body 3 are inserted into a cylindrical body 4 that holds them.
Then, the catalyst body 3 is connected to a power supply device (not shown) so as to be electrically heated.

【0019】触媒体3の支持体としては、線径0.3m
mのNi−Cr線(比抵抗1.4×10−4Ω・cm)
を40メッシュで平織りしたものである(開孔率65
%)。そして、触媒体3は、支持体にアルミナを平均厚
さ50μmとなるように塗布し、これに白金化合物(ニ
トロジアミン白金錯体溶液)を含浸させることにより白
金粒子を支持体(アルミナ層)に分散担持させることに
より製造した。ここでの、白金粒子の担持量は2.6g
/m2とした。一方のフィルター2は、アルミナ長繊維
を布状に織ったものである。
The support for the catalyst body 3 has a wire diameter of 0.3 m.
m Ni-Cr wire (specific resistance 1.4 × 10-4 Ω · cm)
Is 40-mesh plain weave (open area ratio 65
%). Then, in the catalyst body 3, the support is coated with alumina so as to have an average thickness of 50 μm, and a platinum compound (nitrodiamine platinum complex solution) is impregnated into the support to disperse the platinum particles in the support (alumina layer). It was manufactured by supporting. The amount of platinum particles carried here is 2.6 g
/ M2. One of the filters 2 is made of long fibers of alumina woven into a cloth.

【0020】この排ガス処理装置1を用いて、有機化合
物及び炭素微粒子を含む排ガスを用い浄化試験を行なっ
た。処理対象となる排ガスは有機化合物としてトルエン
を20ppm含み、炭素微粒子として粒径0.01〜1
0μの炭素粒子を含むものである。そして、排ガスの燃
焼条件としては、触媒温度は400℃となるように通電
量を制御し、排ガス流量5.5cm/min、空間速
度(SV)80000 −1とした。
Using this exhaust gas treatment apparatus 1, organic compound
Performs a purification test using exhaust gas containing particulate matter and carbon fine particles
It was Exhaust gas to be treated is toluene as an organic compound
Containing 20 ppm of carbon fine particles having a particle size of 0.01 to 1
It contains 0 μ of carbon particles. And the combustion of exhaust gas
The firing condition is to energize so that the catalyst temperature is 400 ° C.
Controlling the amount, exhaust gas flow rate 5.5 cmThree/ Min, space speed
Degree (SV) 80000 -1And

【0021】その結果、触媒体出口のトルエン、炭素微
粒子の濃度を測定したところ、トルエンについては0p
pmと完全に燃焼除去されていることが確認され、炭素
微粒子についても0.01〜0.1μmの極微粒のもの
が僅かに(1%未満)あるもののほぼ完全な除去がなさ
れていることが確認された。
As a result, when the concentrations of toluene and carbon fine particles at the catalyst outlet were measured, 0 p was found for toluene.
It was confirmed that pm was completely burned and removed, and the carbon fine particles were also almost completely removed although there were a few (less than 1%) of ultrafine particles of 0.01 to 0.1 μm. confirmed.

【0022】[0022]

【発明の効果】以上説明したように、本発明に係る排ガ
ス処理装置は、触媒体を通電により加熱可能なものと
し、これにフィルターを接触配置させるものであり、こ
れにより触媒反応を生じさせるための排ガス加熱時にお
けるエネルギー効率の上昇に加え、排ガス中の有機化合
物及び炭素微粒子の除去効率を高めることが可能とな
る。そして、本発明に係る処理装置は、ディーゼル排ガ
スのように有機化合物及び炭素微粒子を含む排ガスの浄
化処理に最適である。
As described above, the exhaust gas treating apparatus according to the present invention is such that the catalyst body can be heated by energization and the filter is placed in contact with the catalyst body so as to cause the catalytic reaction. In addition to the increase in energy efficiency at the time of heating exhaust gas, it becomes possible to increase the efficiency of removing organic compounds and carbon fine particles in exhaust gas. The treatment apparatus according to the present invention is most suitable for purification treatment of exhaust gas containing organic compounds and carbon fine particles such as diesel exhaust gas.

【図面の簡単な説明】[Brief description of drawings]

【図1】本実施形態に係る排ガス処理装置の外観を概略
図示する図。
FIG. 1 is a diagram schematically showing the outer appearance of an exhaust gas treatment apparatus according to this embodiment.

【符号の説明】[Explanation of symbols]

1 排ガス処理装置 2 フィルター 3 触媒体 4 筒体 1 Exhaust gas treatment device 2 filters 3 catalyst 4 cylinder

───────────────────────────────────────────────────── 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) B01D 53/94 F01N 3/24 E F01N 3/24 Q 3/28 301P 3/28 301 311B 311 B01D 53/36 103C Fターム(参考) 3G090 AA02 AA04 BA01 CB11 EA02 3G091 AA18 AA28 AB02 AB13 BA00 BA15 CA04 DB10 EA18 FA02 FA04 FA12 FA13 FB02 FC04 FC06 FC07 GA04 GA05 GA16 GB01X GB06W GB10X GB16X GB17X HA15 HA16 HA31 HA45 HA46 HA47 4D019 AA01 BA05 BB02 BC12 BD01 CB04 DA03 4D048 AA14 AA17 AB01 BA03X BA30X BA39X BA41X BB07 BB08 CC53 CD05 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B01D 53/94 F01N 3/24 E F01N 3/24 Q 3/28 301P 3/28 301 311B 311 B01D 53 / 36 103C F Term (reference) 3G090 AA02 AA04 BA01 CB11 EA02 3G091 AA18 AA28 AB02 AB13 BA00 BA15 CA04 DB10 EA18 FA02 FA04 FA12 FA13 FB02 FC04 FC06 FC07 GA04 GA05 GA16 GB01X GB06W GB10X GB16X GB17X HA45 HA46 HA31 HA45 HA19 HA16 HA16 HA16 HA16 HA16 HA16 HA15 HA16 HA16 HA16 HA16 HA16 HA15 HA16 HA16 HA16 HA15 HA16 HA16 HA15 HA16 HA16 HA16 HA16 HA15 HA16 HA15 HA16 HA16 HA15 HA16 HA16 HA16 HA15 HA16 HA31 HA45 BD01 CB04 DA03 4D048 AA14 AA17 AB01 BA03X BA30X BA39X BA41X BB07 BB08 CC53 CD05

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】排ガス中の揮発性有機化合物及び炭素微粒
子を燃焼除去するための排ガス処理装置であって、 白金族金属粒子からなる触媒粒子と該触媒粒子を支持す
る支持体とからなる触媒体と、該触媒体の上流側及び/
又は下流側の少なくとも一方の面に接触配置されるフィ
ルターとからなり前記触媒体の前記支持体は比抵抗値1
×10−4Ω・cm〜1×10−3Ω・cmの導電材料
よりなる排ガス処理装置。
1. An exhaust gas treatment apparatus for burning and removing volatile organic compounds and carbon fine particles in exhaust gas, comprising a catalyst body comprising catalyst particles composed of platinum group metal particles and a support supporting the catalyst particles. And the upstream side of the catalyst body and /
Or a filter disposed in contact with at least one surface on the downstream side, and the support of the catalyst has a specific resistance value of 1
An exhaust gas treatment device made of a conductive material having a conductivity of x10 -4 Ωcm to 1x10 -3 Ωcm.
【請求項2】支持体はFe−Cr合金又はNi−Cr合
金よりなる請求項1記載の排ガス処理装置。
2. The exhaust gas treating apparatus according to claim 1, wherein the support is made of a Fe—Cr alloy or a Ni—Cr alloy.
【請求項3】支持体は、開孔率40〜90%の網体であ
る請求項1又は請求項2記載の排ガス処理装置。
3. The exhaust gas treating apparatus according to claim 1 or 2, wherein the support is a net having a porosity of 40 to 90%.
【請求項4】支持体は、厚さ50〜100μmのセラミ
ック材料からなるコーティングを備え、触媒粒子が該コ
ーティングに分散担持されている請求項1〜請求項3記
載の排ガス処理装置。
4. The exhaust gas treating apparatus according to claim 1, wherein the support has a coating made of a ceramic material having a thickness of 50 to 100 μm, and the catalyst particles are dispersed and carried on the coating.
【請求項5】触媒粒子が支持体表面積に対して0.1〜
5g/mの重量で担持されている請求項1〜請求項4
記載の排ガス処理装置。
5. The catalyst particles have a surface area of the support of 0.1 to 0.1.
Claims 1 to 4 supported by a weight of 5 g / m 2.
Exhaust gas treatment device described.
【請求項6】フィルターは、アルミナ、炭化ケイ素、二
酸化ケイ素よりなる織布である請求項1〜請求項5記載
の排ガス処理装置。
6. The exhaust gas treating apparatus according to claim 1, wherein the filter is a woven fabric made of alumina, silicon carbide and silicon dioxide.
【請求項7】支持体と略同一の断面形状を有し、ステン
レスからなる補強板を触媒体の下流側に配置する請求項
1〜請求項6記載の排ガス処理装置。
7. The exhaust gas treating apparatus according to claim 1, wherein a reinforcing plate made of stainless steel and having a cross-sectional shape substantially the same as that of the support is arranged on the downstream side of the catalyst.
JP2001249704A 2001-08-21 2001-08-21 Exhaust gas disposing device Pending JP2003056328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001249704A JP2003056328A (en) 2001-08-21 2001-08-21 Exhaust gas disposing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001249704A JP2003056328A (en) 2001-08-21 2001-08-21 Exhaust gas disposing device

Publications (1)

Publication Number Publication Date
JP2003056328A true JP2003056328A (en) 2003-02-26

Family

ID=19078668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001249704A Pending JP2003056328A (en) 2001-08-21 2001-08-21 Exhaust gas disposing device

Country Status (1)

Country Link
JP (1) JP2003056328A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012021488A (en) * 2010-07-15 2012-02-02 Toyota Motor Corp Electrically heated catalytic device
KR101765159B1 (en) * 2015-04-06 2017-08-04 고등기술연구원연구조합 Catalyst filter having function of removing carbon dust and fitering unit comprising the same and precipitation apparatus comprising the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012021488A (en) * 2010-07-15 2012-02-02 Toyota Motor Corp Electrically heated catalytic device
US8701394B2 (en) 2010-07-15 2014-04-22 Toyota Jidosha Kabushiki Kaisha Electrically heated catalytic device and vehicle equipped with electrically heated catalytic device
KR101765159B1 (en) * 2015-04-06 2017-08-04 고등기술연구원연구조합 Catalyst filter having function of removing carbon dust and fitering unit comprising the same and precipitation apparatus comprising the same

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