JPH0394817A - Method for purifying exhaust gas - Google Patents
Method for purifying exhaust gasInfo
- Publication number
- JPH0394817A JPH0394817A JP1227548A JP22754889A JPH0394817A JP H0394817 A JPH0394817 A JP H0394817A JP 1227548 A JP1227548 A JP 1227548A JP 22754889 A JP22754889 A JP 22754889A JP H0394817 A JPH0394817 A JP H0394817A
- Authority
- JP
- Japan
- Prior art keywords
- nox
- exhaust gas
- zeolite
- olefin
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 16
- 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 23
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 22
- 239000010457 zeolite Substances 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- 150000001336 alkenes Chemical class 0.000 claims abstract description 17
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 59
- 239000007789 gas Substances 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000005342 ion exchange Methods 0.000 abstract description 5
- 239000002002 slurry Substances 0.000 abstract description 5
- -1 nitrate ions Chemical class 0.000 abstract description 4
- 229910002651 NO3 Inorganic materials 0.000 abstract description 3
- 150000002500 ions Chemical group 0.000 abstract description 3
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 229930195733 hydrocarbon Natural products 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〉
本発明は、自動車等の内燃機関例えば、ガ（従来の技術
〉
近年、自動車等の内燃機関、ボイラー、工業ブラ〉トよ
り排出される排ガス中には、窒素酸化物（ＮＯｘ＞の有
害成分が含まれ、大気汚染の原因となっている。そのた
め、この排ガス中の窒素酸化物の除去が種々の方面で検
討されている。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to the use of exhaust gas emitted from internal combustion engines such as automobiles, boilers, industrial boilers, etc. (Prior Art) The exhaust gas contains harmful components such as nitrogen oxides (NOx), which are a cause of air pollution.Therefore, the removal of nitrogen oxides from this exhaust gas is being studied in various fields.
従来、この窒素酸化物処理方法としては、例えば自動車
排ガスの処理方法の場合、三元触媒を用いて窒素酸化物
を除去している。この方法は、燃料を完全燃焼できる空
気量だけを導入する状態下でなされている。しかし、燃
料に対する空気の割合（空燃比、空気／燃料：Ａ／Ｆ）
が大きくなると、排ガス中の未燃焼成分（炭化水素、−
ＩＩ化炭素等）を完全燃焼させるのに必要な量より過剰
な酸素が存在し、このような酸化雰囲気下においては、
三元触媒による窒素酸化物を除去するこεができなかっ
た。Conventionally, as a method for treating nitrogen oxides, for example, in a method for treating automobile exhaust gas, a three-way catalyst is used to remove nitrogen oxides. This method is carried out under conditions where only the amount of air that can completely burn the fuel is introduced. However, the ratio of air to fuel (air-fuel ratio, air/fuel: A/F)
As the value increases, the unburned components in the exhaust gas (hydrocarbons, -
In such an oxidizing atmosphere, there is an excess of oxygen than is necessary for complete combustion of carbon (II), etc.
It was not possible to remove nitrogen oxides using a three-way catalyst.
また、内燃機関うちのディーゼルエンジンやボイラーに
おいては、アンモニア、水素あるいは一酸化炭素の還元
剤を用いて窒素酸化物を除去する方法が用いられていた
。しかし、未反応の還元剤の回収、処理のため特別な装
置が必要であった。Furthermore, in internal combustion engines such as diesel engines and boilers, a method of removing nitrogen oxides using a reducing agent such as ammonia, hydrogen, or carbon monoxide has been used. However, special equipment was required to recover and process the unreacted reducing agent.
最近、ＮＯＸ分解の方法として、銅イオンを含有した結
晶性アルミノ硅酸塩を用いたＮＯＸ分解用触媒を用いる
方法が開示されているが（特開昭６０−１ ２５２５０
） 、この方法は単に一酸化穿素（Ｎ○）を室素（Ｎ２
）と酸素（０２〉に分解可能であることを示し、実際の
排ガス条件での有効性、オレフィンがＮＯｘ分解に有効
であることは示されていない。Recently, as a method for NOX decomposition, a method using a NOX decomposition catalyst using crystalline aluminosilicate containing copper ions has been disclosed (Japanese Patent Application Laid-Open No. 60-125250).
), this method simply converts perorine monoxide (N○) to nitrogen (N2).
) and oxygen (02>), but their effectiveness under actual exhaust gas conditions and the effectiveness of olefins in NOx decomposition have not been shown.
また、ＮＯＸ分解に炭化水素が有効であることが示され
ているが（特開１１Ｂ６３−１００９１９＞、開示され
ている条件は炭化水素εＮＯｘの濃度比が、ＮＯｘの高
い条件であり、炭化水素εＮＯｘの比が炭化水素の高い
条何での検討はな（、また、炭化水素のうちオレフィン
が有効であるこεも示きれておらず、ＮＯｘ分解効果も
少ないものであった。Furthermore, it has been shown that hydrocarbons are effective for NOX decomposition (JP-A-11B63-100919), but the conditions disclosed are conditions where the concentration ratio of hydrocarbon εNOx is high, and the concentration ratio of hydrocarbon εNOx is high. However, studies have not been carried out in the case where the ratio of hydrocarbons is high (in addition, it has not been shown that olefins are effective among hydrocarbons, and the NOx decomposition effect is small.
したがって、内燃機関の使用条件下で、排出される排ガ
ス中のＮＯｘを有効に分解除去する方法が望まれていた
。Therefore, a method for effectively decomposing and removing NOx in the exhaust gas emitted under the operating conditions of an internal combustion engine has been desired.
（課題を解決するための手段）
本発明者らは、上記の課題を解決するために鋭意研究の
結果、銅イオンで交換したＺＳＭ−５型ゼオライトを用
い、排ガス中のオレフィンとＮｏ×の濃度を所定の比率
にすることにより、ＮＯｘを分解・除去できるこεを見
い出し本発明を完成するに至ったのである。(Means for Solving the Problems) In order to solve the above problems, the present inventors have conducted intensive research and found that using ZSM-5 type zeolite exchanged with copper ions, the concentration of olefins and NO They discovered that NOx can be decomposed and removed by setting ε to a predetermined ratio, and have completed the present invention.
すなわち、本発明は、酸化雰囲気の排ガスにおいて、室
素酸化物（ＮＯｘ＞と炭素数２〜４のオレフィン（ＨＣ
’）．！：の濃度比（ＮＯｘ ：｝Ｉｃ’ ）を１：
３〜１：５０の範囲にし、かつ銅でイオン交換されたＺ
ＳＭ−５型ゼオライトを含有する触媒を用い、窒素酸化
物を除去するこｔを特徴とする排ガス浄化方法である。That is, the present invention combines nitrogen oxides (NOx) and olefins having 2 to 4 carbon atoms (HC
'). ! : concentration ratio (NOx :}Ic') of 1:
3 to 1:50 and ion-exchanged with copper
This is an exhaust gas purification method characterized by removing nitrogen oxides using a catalyst containing SM-5 type zeolite.
また、ＮＯｘとＨＣ’ の比は１：５〜１：３０である
のが好ましい。Further, the ratio of NOx to HC' is preferably 1:5 to 1:30.
排ガスが酸化雰囲気εは、排ガス中の炭化水素Ｎ［Ｃ）
、一酸化炭素（Ｃｏ）等の燃焼成分を完全酸化ｌ．：酸
化ずるに必要な酸素（０２）！１度より過剰な０２が、
排ガス中に含まれている状態を示すものであり、また排
ガス中にオレフィンを添加した場合には、このオレフィ
ンを完全酸化し、なおかつ排ガス中に週剰の０２が残っ
ている状態を示すものである。The atmosphere ε in which the exhaust gas is oxidized is the hydrocarbon N[C] in the exhaust gas.
, complete oxidation of combustion components such as carbon monoxide (Co) l. :Oxygen necessary for oxidation (02)! 02 in excess of 1 degree,
This indicates the state contained in the exhaust gas, and if olefin is added to the exhaust gas, it indicates the state in which the olefin has been completely oxidized and a weekly surplus of 02 remains in the exhaust gas. be.
オレフィンとは、エチレン、プロピレン、ブテン、ブタ
ジ玉ン等の炭素数２〜４（Ｃ２〜Ｃａ）のものをいい、
また窒素酸化物（ＮＯｘ）は、ＮＯ、Ｎ２ ０ＳＮ２
０ａ等を示すものである。Olefins refer to those with carbon numbers of 2 to 4 (C2 to Ca) such as ethylene, propylene, butene, butadiene, etc.
Nitrogen oxides (NOx) are NO, N2 0SN2
0a etc.
ＮＯＸどオレフィンの濃度比は１：３〜１：５０、好ま
し（は１：５〜１：３０である。１：３よりオレフィン
濃度が低い場合オレフィンは酸素と攪先的に反応しＮＯ
ｘとの反応が生じ難（、そのためにＮＯＸの浄化効率は
低くなり、一方１：５０よりもオレフィン濃度が高くな
っても、それに合ったＮＯｘの浄化がみられず、また未
反応のオレフィン濃度が高（なり触媒で充分除去するこ
とが困難εなるものである。The concentration ratio of olefins such as NOx is 1:3 to 1:50, preferably 1:5 to 1:30.If the olefin concentration is lower than 1:3, the olefins react with oxygen in a stirred manner and NO
It is difficult to react with is so high that it is difficult to remove it sufficiently with a catalyst.
また、排ガス中のオレフィンとＮＯｘの′ａ度が、１：
３よりオレフィンｍ度が低い状態εなった場合、適宜オ
レフィンを排ガス中に導入するこｋにより、本発明にか
かる濃度比を雑持するこεが（きるものである。このオ
レフィンの濃度は、通常ｉｏｏ〜１００００１）Ｅｌ３
であるこεが好ましく、除去するＮＯｘ濃度は１００〜
３０ｏｏｐｐｌｌであるこεが好ましい。In addition, the degree of olefin and NOx in the exhaust gas is 1:
When the olefin m degree reaches a state ε lower than 3, by introducing an appropriate olefin into the exhaust gas, it is possible to maintain the concentration ratio according to the present invention.The concentration of this olefin is Usually ioo~100001) El3
ε is preferable, and the NOx concentration to be removed is 100~
Preferably, ε is 30ooppll.
ゼオライＬのＣｕイオン交換に用いられるＣＵ塩εして
は、硝酸塩、酢酸塩なとの水溶性の塩が用いられ、その
イオン交換量はゼオライトに対して０． １〜１０重ｆ
ｆｌ（ｗｔ％）％が好ましい。As the CU salt ε used for Cu ion exchange of zeolite L, water-soluble salts such as nitrate and acetate are used, and the amount of ion exchange is 0. 1~10 fold f
fl(wt%)% is preferred.
また、イオン交換方法としては、Ｃｕ塩の水溶塩にゼオ
ライトを入れ所定時間撹拌する方法を取るが、イオン交
換員の多い場合には、ＣＩＪ塩水溶液にアンモニアを添
加した液にゼオライトを入れ、所定時間撹拌することに
よりなされる。In addition, as an ion exchange method, a method is used in which zeolite is added to an aqueous solution of Cu salt and stirred for a predetermined period of time. However, when there are many ion exchangers, zeolite is added to a CIJ salt aqueous solution with ammonia added, This is done by stirring for a period of time.
触媒の体積としては、空間速度（Ｓ． Ｖ．． ”）が
１００００〜１０００００Ｈｒ−１（１／時間）となる
ものが好ましい。The volume of the catalyst is preferably such that the space velocity (S.V.'') is 10,000 to 100,000 Hr-1 (1/hour).
また、触媒の形状としては、ベレット状、ハニカム状な
どが用いられ、使用される内燃機関により適宜選択され
るが、圧力損失を考慮した場合ハニカム型が好ましい。Further, the shape of the catalyst may be a pellet shape, a honeycomb shape, or the like, and is appropriately selected depending on the internal combustion engine used, but a honeycomb shape is preferable in consideration of pressure loss.
（実 施 例）
以下、実施例により詳細に説明するが、本発明は、本発
明の趣旨に反しないかぎりこれらに限定されるものでは
ないことは言うまでもない。(Examples) Hereinafter, the present invention will be explained in detail with reference to Examples, but it goes without saying that the present invention is not limited to these unless it goes against the spirit of the present invention.
実施例 １
市販のコージエライト質ハニカム担休（日本碍子製）を
用いて触媒を調製した。Example 1 A catalyst was prepared using a commercially available cordierite honeycomb carrier (manufactured by Nippon Insulator).
用いたハニカム担体は、横断面が１インチ平方当り約４
００個のガス流通セルを有する３３１ｍφ、長さ７６ｍ
の円柱状のもので６５ｌＩ１の体積を有するものを用い
た。The honeycomb carrier used had a cross section of about 4 per square inch.
331mφ, length 76m with 00 gas flow cells
A cylindrical one having a volume of 65lI1 was used.
ＺＳＭ−５ゼオライトのＸＩＩｔＪ方法は文献″Ｒａｐ
ｉｄ Ｃｒｙｓｔａｌｌｉｚａｔｉｏｎ Ｈｅｔｈａｄ
” Ｐｒｏｃｅｅｄｉｎｇｓ８ｔｈ Ｉｎｔｅｒｎａｔ
ｉｏｎａｌ Ｃｏｎｇｒｅｓｓ ｏｎ Ｃａｔａｌｙｓ
ｉｓ，Ｂｅｒ１ｉｎ，１９８４，Ｖｏｌ３， Ｐ５６９
に基づいて行った。The XIItJ method for ZSM-5 zeolite is described in the literature “Rap
id Crystallization Hethad
“Proceedings8th International
ional Congress on Catalys
is, Ber1in, 1984, Vol3, P569
It was done based on.
得られたゼオライトはＸ線回折によりＺＳＭ−”５型の
ものである．ことを確認した。It was confirmed by X-ray diffraction that the obtained zeolite was of type ZSM-''5.
得られたＺＳＭ−５型ゼオライト１００ｇに純水４００
ｇを加え、９８℃で２時間撹拌した後、８０℃で０，２
ｍｏｌ／ｊ！の硝斂銅水溶液７００ａｅをゆっくり滴下
した。滴下終了後も８０℃で１２時間加熱撹拌し、イオ
ン交換を行った。イオン交換されたゼオライトは枦過し
、さらに硝酸イオンが検出されなくなるまで十分洗浄し
た。このイオン交換されたゼオライトを１２０℃、２４
時間乾燥をした．得られたゼオライト粉体をボールミル
で湿式粉砕することにより水性スラリーを調製した。Add 400 g of pure water to 100 g of the obtained ZSM-5 type zeolite.
g and stirred at 98°C for 2 hours, and then heated to 80°C for 0.2 hours.
mol/j! 700 ae of copper nitrate aqueous solution was slowly added dropwise. After the dropwise addition was completed, the mixture was heated and stirred at 80° C. for 12 hours to perform ion exchange. The ion-exchanged zeolite was filtered and thoroughly washed until nitrate ions were no longer detected. This ion-exchanged zeolite was heated at 120°C, 24°C.
I let it dry for a while. An aqueous slurry was prepared by wet-pulverizing the obtained zeolite powder in a ball mill.
この水性スラリーに前記ハニカム担体を浸漬し取り出し
た後、セル内の過剰スラリーを圧縮空気でブローして、
全てのセルの目詰りを除去した。After immersing the honeycomb carrier in this aqueous slurry and taking it out, the excess slurry in the cells is blown out with compressed air.
All cells were unclogged.
次いで、１５０℃で２時間乾燥し、完成触＊ （Ａ）を
得た。銅の担持率はＺＳＭ−５型ゼオライトに対して５
．９ｗｔ％であった。Then, it was dried at 150° C. for 2 hours to obtain a finished product (A). The copper loading rate is 5 for ZSM-5 type zeolite.
．． It was 9wt%.
比較例 １
実施例１において、ＺＳＭ−５型ゼオライトの代わりに
Ｙ型ゼオライト、を用いる以外は実施例１と同様の操作
を行って、完成触媒（Ｂ）を得た。Comparative Example 1 A completed catalyst (B) was obtained in the same manner as in Example 1 except that Y-type zeolite was used instead of ZSM-5-type zeolite.
銅の担持率はＹ型ゼオライトに対して５． ３ ｗ ｔ
％であった。The copper loading rate is 5.5% compared to Y-type zeolite. 3wt
%Met.
実施例 ２
実施例１で調製した触媒（Ａ）について、触媒性能テス
トを行った。Example 2 Catalyst performance tests were conducted on the catalyst (A) prepared in Example 1.
３ ４． ５ ｍφＸ ３ ０ ０ ｗ Ｌのステンレ
ス製反応管に触媒を充填した後、反応ガスとして一酸化
炭素０． ２容量％、酸素２．０容量％、水１０容量％
、二酸化炭素１３．５容最％、残り窒素を含有する空間
速度（Ｓ．Ｖ．＞２０，０００目「−１の条件でガスを
導入した。それと同時に一酸化窒素（Ｎｏ）とエチレン
（Ｃ２口４）、ブロビレン（０３目６）、ブロバン（０
３口８）、ブテン（０４口８）を種々の濃度で導入した
。種々の一酸化窒素と０２｝＋４、Ｃ３口６、Ｃ３口ｅ
、Ｃａ Ｈｅの濃度（Ｃ２口４、Ｃ３ Ｈ６ 、０３
Ｈ８ 、Ｃａ口８は炭素数１のメタン（Ｃ口４）に換
算した場合の濃度）を表１に示した。3 4. After filling a 5 mφ x 300 w L stainless steel reaction tube with the catalyst, carbon monoxide was added as the reaction gas. 2% by volume, 2.0% by volume of oxygen, 10% by volume of water
, carbon dioxide 13.5% by volume, and the remaining nitrogen at a space velocity (S.V. > 20,000). mouth 4), brovirene (03 eyes 6), broban (0
3 ports 8) and butenes (04 ports 8) were introduced at various concentrations. Various nitric oxides and 02}+4, C3 mouth 6, C3 mouth e
, Ca He concentration (C2 mouth 4, C3 H6 , 03
Table 1 shows the concentration of H8 and Ca port 8 when converted to methane having one carbon number (C port 4).
触媒入口温度５００℃での触媒性能の評価を行った。こ
れらの結果を表１に示した。Catalyst performance was evaluated at a catalyst inlet temperature of 500°C. These results are shown in Table 1.
実施例．３
実施例１、比較例１で調製した触媒（Ａ） 、（Ｂ）に
ついて触媒性能テストを行った。Example. 3 Catalyst performance tests were conducted on the catalysts (A) and (B) prepared in Example 1 and Comparative Example 1.
実施例２で用いた反応管に触媒を充填した後、反応ガス
（一酸化炭素０． ２容吊％、酸素２．０容徂％、水１
０容量％、二酸化炭素１３．５容量％、一酸化窒素１ｏ
ｏｐｐｍ．ブロビレン１０００ｐｐｍく炭素数（ＣＨ４
）に換算した場合のｓｒｘ）、残りは窒素を含有する）
をＳ．Ｖ．−２０．０００口「−１の条件で導入した。After filling the reaction tube used in Example 2 with the catalyst, the reaction gas (carbon monoxide 0.2% by volume, oxygen 2.0% by volume, water 1%) was added.
0 volume%, carbon dioxide 13.5 volume%, nitrogen monoxide 1o
oppm. Brobylene 1000ppm carbon number (CH4
), the rest contains nitrogen)
S. V. -20,000 units were introduced under the condition of -1.
触媒入口温度５００℃で触媒性能の評価を行った。Catalyst performance was evaluated at a catalyst inlet temperature of 500°C.
これらの結果を表２に 示した。These results are shown in Table 2. Indicated.
Claims (2)
ｘ）と炭素数２〜４のオレフィン（ＨＣ′）との濃度比
（ＮＯｘ：ＨＣ′）を１：３〜１：５０の範囲にし、か
つ銅でイオン交換されたＺＳＭ−５型ゼオライトを含有
する触媒を用い、窒素酸化物を除去することを特徴とす
る排ガス浄化方法。(1) Nitrogen oxides (NO
x) and an olefin having 2 to 4 carbon atoms (HC') (NOx:HC') in the range of 1:3 to 1:50, and contains ZSM-5 type zeolite ion-exchanged with copper. An exhaust gas purification method characterized by using a catalyst that removes nitrogen oxides.
比が１：５〜１：３０であることを特徴とする請求項（
１）記載の浄化方法。(2) A claim (
1) Purification method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1227548A JP3015051B2 (en) | 1989-09-04 | 1989-09-04 | Exhaust gas purification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1227548A JP3015051B2 (en) | 1989-09-04 | 1989-09-04 | Exhaust gas purification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0394817A true JPH0394817A (en) | 1991-04-19 |
| JP3015051B2 JP3015051B2 (en) | 2000-02-28 |
Family
ID=16862627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1227548A Expired - Lifetime JP3015051B2 (en) | 1989-09-04 | 1989-09-04 | Exhaust gas purification method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3015051B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995027128A1 (en) * | 1994-04-04 | 1995-10-12 | William Galen Ii Brown | Three-way catalytic oxidizer for diesel engines |
| FR2847830A1 (en) * | 2002-12-02 | 2004-06-04 | Irma | Method of decomposing N2O into N2 and O2 at a temperature between 700 and 1000 deg C and at high VVH in the presence of a catalyst containing a mixed oxide of zirconium and cerium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0389942A (en) * | 1989-08-31 | 1991-04-15 | Tosoh Corp | Exhaust gas purifying catalyst and purifying method with it utilized therefor |
-
1989
- 1989-09-04 JP JP1227548A patent/JP3015051B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0389942A (en) * | 1989-08-31 | 1991-04-15 | Tosoh Corp | Exhaust gas purifying catalyst and purifying method with it utilized therefor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995027128A1 (en) * | 1994-04-04 | 1995-10-12 | William Galen Ii Brown | Three-way catalytic oxidizer for diesel engines |
| FR2847830A1 (en) * | 2002-12-02 | 2004-06-04 | Irma | Method of decomposing N2O into N2 and O2 at a temperature between 700 and 1000 deg C and at high VVH in the presence of a catalyst containing a mixed oxide of zirconium and cerium |
| WO2004052512A1 (en) * | 2002-12-02 | 2004-06-24 | Grande-Paroisse S.A. | Method for the high-temperature catalytic decomposition of n2o into n2 and 02 |
| EA008455B1 (en) * | 2002-12-02 | 2007-06-29 | Гранд-Паруасс С.А. | Method for the high-temperature catalytic decomposition of no into nand o |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3015051B2 (en) | 2000-02-28 |
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