JP5618542B2 - 排ガス中の窒素酸化物の選択的接触還元のためのアンモニア前駆物質としてのギ酸グアニジニウム含有水溶液の使用 - Google Patents
排ガス中の窒素酸化物の選択的接触還元のためのアンモニア前駆物質としてのギ酸グアニジニウム含有水溶液の使用 Download PDFInfo
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D53/34—Chemical or biological purification of waste gases
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2251/00—Reactants
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- B01D2251/206—Ammonium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D2257/00—Components to be removed
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- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
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- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/25—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an ammonia generator
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Description
(H2N2)CO→HNCO+NH3 [1]
の通り、主としてイソシアン酸(HNCO)とアンモニア(NH3)とに分解する。
HNCO+H2O→NH2+CO2 [2]
に従って、アンモニア(NH3)と二酸化炭素とに加水分解する。
本発明により、有利には、ギ酸グアニジニウム水溶液は、場合により尿素および/またはアンモニアおよび/または後述する一般式(I)で表されるような化合物との組み合わせにおいて使用される。
R=H、NH2、C1〜C12−アルキル、
=アセテート、カーボネート、シアネート、ホルメート、ヒドロキシド、メトキシドおよびオキサレートを意味する]
の化合物が有効であることが実証された。
図1に描写されたものに相応する自己圧力式のアンモニア発生装置中でのアンモニア前駆体物質としての40質量%のギ酸グアニジニウム水溶液(GF)(Fp.<−20℃)の使用
乗用車エンジン1が200Nm3/hの排ガス流を生み出し、該排ガス流は中間管2を介して白金酸化触媒3とパティキュレートフィルター4とを通って排ガス中間管6の中に入る。FTIRガス分析装置5を用いて測定された中間管6の中の排ガス組成は:窒素酸化物、NO 150ppm;二酸化窒素、NO2 150ppm;二酸化炭素、CO2 7%;水蒸気 8%、一酸化炭素、CO 10ppmである。
GF溶液8の計量供給は、FTIRガス分析装置17を用いて270ppmのアンモニア濃度を測定することができるように、圧力調整ポンプ9を用いて制御する。この際、同時にGF溶液8のホルメート部分の分解によってCO濃度90から100ppmへの上昇が生じる。GF溶液8の蒸発および分解によるCO2含有量および水蒸気含有量の上昇は期待通り僅かであり、かつ殆ど測定可能ではない。GFの熱加水分解は完全なものである。それというのも、ガス分析装置17を用いてイソシアン酸、HNCOを検出することができず、尿素およびその分解生成物の付着物を確認することができなかったからである。
実施例1と同じように作業するが、しかしながら二酸化チタン触媒14の代わりに、酸化パラジウム−二酸化チタン−触媒を使用し、その際、該二酸化チタンは、Pd(NO3)2水溶液を用いて乾燥およびか焼(500℃で5時間)後に、PdO 1質量%(=約0.9質量%のPd)を含有し、かつ一酸化炭素の部分酸化をもたらす触媒が生じるように含浸した。FTIRガス分析装置17で、CO濃度の上昇は測定可能ではなかった。
Claims (16)
- ギ酸グアニジニウム含有水溶液の使用であって、
排ガス中でのアンモニアを用いた窒素酸化物の選択的接触還元のためのアンモニア前駆物質としての使用。 - 前記ギ酸グアニジニウム含有水溶液が、5〜85質量%のギ酸グアニジニウム含有率、または、30〜80質量%のギ酸グアニジニウム含有率を有することを特徴とする、請求項1または2記載の使用。
- 前記ギ酸グアニジニウム含有水溶液が、ギ酸グアニジニウムと、尿素とを、ギ酸グアニジニウム含有率が5〜60質量%でかつ尿素含有率が5〜35質量%で、含有することを特徴とする、請求項2記載の使用。
- 前記ギ酸グアニジニウム含有水溶液が、ギ酸グアニジニウムと、アンモニアもしくは前記一般式(I)の化合物とを、ギ酸グアニジニウム含有率が5〜60質量%でかつアンモニア含有率もしくは前記式(I)の化合物含有率が5〜40質量%で、含有することを特徴とする、請求項2または4記載の使用。
- 前記ギ酸グアニジニウムならびに場合によりさらに別の成分が、排ガス内部での排ガスのメインフロー、パーシャルフローもしくはバイパスフローにおいてか、または排ガス外部で自己圧力式のかつ外部加熱される配置において接触分解によってアンモニアに変換されることを特徴とする、請求項1から5までのいずれか1項記載の使用。
- アンモニア、二酸化炭素および場合により一酸化炭素への前記ギ酸グアニジニウムならびに場合によりさらに別の成分の接触分解が、触媒活性でありかつ酸化活性ではないコーティングの存在下で行われ、ここで、該コーティングが、二酸化チタン、酸化アルミニウムおよび二酸化ケイ素ならびにそれらの混合物の群から選択された酸化物から構成されているか、かつ/または、該コーティングが、完全にまたは部分的に金属交換されている熱水安定性のゼオライトから構成されていることを特徴とする、請求項6記載の使用。
- アンモニアおよび二酸化炭素への前記ギ酸グアニジニウムもしくはその他の成分の接触分解のために、二酸化チタン、酸化アルミニウムおよび二酸化ケイ素の群から選択された酸化物、熱水安定性の金属ゼオライトならびにそれらの混合物からの触媒活性コーティングであって酸化活性成分としての金および/またはパラジウムで含浸されている触媒活性コーティングが使用されることを特徴とする、請求項6記載の使用。
- 前記ギ酸グアニジニウムならびに場合によりさらに別の成分の接触分解のために、活性成分としてのパラジウムおよび/または金を有する触媒コーティングであって貴金属含有率が0.001〜2質量%の触媒コーティングが使用されることを特徴とする、請求項6記載の使用。
- 2つの部分から成る触媒が使用され、その際、第一の部分は酸化活性ではないコーティングを含有し、かつ第二の部分は酸化活性コーティングを含有することを特徴とする、請求項6から9までのいずれか1項記載の使用。
- 前記触媒の5〜90体積%が酸化活性ではないコーティングから成り、かつ10〜95体積%が酸化活性コーティングから成ることを特徴とする、請求項10記載の使用。
- 前記接触分解を2つの連続して配置された触媒の存在下で実施し、その際、第一の触媒は酸化活性ではないコーティングから成り、かつ第二の触媒は酸化活性コーティングから成ることを特徴とする、請求項6から11までのいずれか1項記載の使用。
- 前記のギ酸グアニジニウム含有水溶液の接触分解を150〜350℃で実施することを特徴とする、請求項6から12までのいずれか1項記載の使用。
- 排ガス中でのアンモニアを用いた窒素酸化物の選択的接触還元のためのアンモニア前駆物質としての水性組成物であって、
5〜60質量%の濃度を有するギ酸グアニジニウムと、
5〜35質量%の濃度を有する尿素と、
残分としての水と
から成る、水性組成物。
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DE102006061377.5 | 2006-12-23 | ||
DE102006061377 | 2006-12-23 | ||
PCT/EP2007/011284 WO2008077587A1 (de) | 2006-12-23 | 2007-12-20 | Verwendung von wässrigen guanidiniumformiat-lösungen zur selektiven katalytischen reduktion von stickoxiden in abgasen von fahrzeugen |
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WO2012104205A1 (en) | 2011-02-04 | 2012-08-09 | Paul Scherrer Institut | Ammonia generator converting liquid ammonia precursor solutions to gaseous ammonia for denox-applications using selective catalytic reduction of nitrogen oxides |
CN102278177B (zh) * | 2011-04-27 | 2014-05-07 | 汪家琳 | 内燃机尾气高效利用装置与方法 |
US8940543B2 (en) * | 2011-05-11 | 2015-01-27 | Fuel Tech, Inc. | Diagnostic tool and process for assessing thermal urea gasification performance |
RU2600356C2 (ru) * | 2011-07-01 | 2016-10-20 | Альцхем Аг | Способ получения аммиака из его предшественника для восстановления оксидов азота в отработавших газах |
DE102011106243A1 (de) | 2011-07-01 | 2013-01-03 | Alzchem Ag | Ammoniakgasgenerator zur Erzeugung von Ammoniak zur Reduzierung von Stickoxiden in Abgasen |
DE102011106237A1 (de) | 2011-07-01 | 2013-01-03 | Alzchem Ag | Ammoniakgasgenerator sowie Verfahren zur Erzeugung von Ammoniak zur Reduzierung von Stickoxiden in Abgasen |
DE102011106233A1 (de) | 2011-07-01 | 2013-01-03 | Alzchem Ag | Verfahren zur Erzeugung von Ammoniak aus einer Ammoniakvorläufersubstanz zur Reduzierung von Stickoxiden in Abgasen |
JP5985492B2 (ja) * | 2011-10-12 | 2016-09-06 | 株式会社堀場製作所 | ガス分析装置 |
DE102012025113A1 (de) | 2012-12-21 | 2014-06-26 | Alzchem Ag | Ammoniakgasgenerator, Verfahren zur Herstellung von Ammoniak sowie Verwendung derselben zur Reduktion von Stickoxiden in Abgasen |
CA2893661C (en) | 2012-12-21 | 2021-05-25 | Alzchem Ag | Ammonia gas generator and the use of thereof for reducing nitrogen oxides in exhaust gases |
DE102012025112A1 (de) | 2012-12-21 | 2014-06-26 | Alzchem Ag | Ammoniakgasgenerator sowie Verwendung desselben zur Reduktion von Stickoxiden in Abgasen |
US8997463B2 (en) * | 2013-04-17 | 2015-04-07 | Continental Automotive Systems, Inc. | Reductant delivery unit for automotive selective catalytic reduction with reducing agent heating |
KR101436936B1 (ko) | 2013-06-05 | 2014-09-03 | 한국기계연구원 | 고체 암모늄염 반응기, 그 제어방법 및 고체 암모늄염과 선택적 환원촉매를 이용한 질소산화물 정화시스템 |
US9689293B2 (en) * | 2014-08-19 | 2017-06-27 | Continental Automotive Systems, Inc. | Reductant delivery unit for automotive selective catalytic reduction with optimized fluid heating |
AT517862A1 (de) * | 2015-11-09 | 2017-05-15 | M A L Umwelttechnik - Gmbh | Verfahren zur selektiven Reduktion von Stickoxiden in heißen Gasen |
JP6705334B2 (ja) * | 2016-08-10 | 2020-06-03 | いすゞ自動車株式会社 | 内燃機関の尿素由来堆積物の除去装置及び除去方法 |
CN109641743A (zh) * | 2016-08-30 | 2019-04-16 | 全耐塑料高级创新研究公司 | 用于在车辆上增大水溶液的尿素浓度的系统和方法 |
WO2018128902A1 (en) * | 2017-01-05 | 2018-07-12 | Fuel Tech, Inc. | Controlled, compact, on-demand ammonia gas generation process and apparatus |
CN108468583B (zh) * | 2018-03-24 | 2020-03-27 | 张鑫印 | 一种汽车尾气处理用除氮器 |
US10683787B2 (en) | 2018-11-08 | 2020-06-16 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating |
US10876454B2 (en) | 2018-11-08 | 2020-12-29 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system with multi-reductant injection and doser controls |
US10767529B2 (en) | 2018-11-08 | 2020-09-08 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system having onboard ammonia reactor with heated doser |
US11193413B2 (en) | 2019-12-12 | 2021-12-07 | Faurecia Emissions Control Technologies, Usa, Llc | Exhaust aftertreatment system with virtual temperature determination and control |
US11319853B2 (en) | 2020-03-31 | 2022-05-03 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system with doser |
US11022014B1 (en) | 2020-04-28 | 2021-06-01 | Faurecia Emissions Control Technologies, Usa, Llc | Exhaust aftertreatment system with heated flash-boiling doser |
US11092054B1 (en) | 2020-04-29 | 2021-08-17 | Faurecia Emissions Control Technologies, Usa, Llc | Flash-boiling doser with thermal transfer helix |
US11511239B2 (en) | 2020-04-29 | 2022-11-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated flash-boiling doser with integrated helix |
US11384667B2 (en) | 2020-05-29 | 2022-07-12 | Faurecia Emissions Control Technologies, Usa, Llc | Exhaust aftertreatment system with heated dosing control |
CN113929903B (zh) * | 2020-06-29 | 2022-10-28 | 中国科学技术大学 | 质子化氨基引发npca聚合制备端基高保真度聚多肽的方法 |
US11225894B1 (en) | 2020-06-30 | 2022-01-18 | Faurecia Emissions Control Technologies, Usa, Llc | Exhaust aftertreatment system with thermally controlled reagent doser |
CN112121812B (zh) * | 2020-09-16 | 2022-04-22 | 万华化学集团股份有限公司 | 一种制备丙二胺的催化剂及其制备方法,以及制备丙二胺的方法 |
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JP7551448B2 (ja) * | 2020-10-20 | 2024-09-17 | 株式会社三井E&S | 高融点配管閉塞物質の生成抑制装置及び方法 |
CN114738084A (zh) * | 2021-01-07 | 2022-07-12 | 长城汽车股份有限公司 | 汽车后处理系统及汽车 |
FR3123382A1 (fr) * | 2021-05-31 | 2022-12-02 | Faurecia Systemes D'echappement | Dispositif et méthode pour injecter un fluide dans un conduit d'échappement , ligne d'échappement et véhicule associés |
CN117599604A (zh) * | 2023-10-24 | 2024-02-27 | 上海全熙环保科技股份有限公司 | 一种碱炉专用脱硝剂复合材料及其制备方法 |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0237568A4 (en) | 1985-10-04 | 1989-01-24 | Fuel Tech Inc | REDUCTION OF POLLUTANT SUBSTANCES BASED ON NITROGEN AND CARBON. |
FR2602507B1 (fr) * | 1986-08-08 | 1989-06-09 | Sanofi Pharma | Procede de preparation de diamino-2,4 benzyl-5 pyrimidines |
JPS6445A (en) * | 1987-06-23 | 1989-01-05 | Mitsui Toatsu Chem Inc | Production of 2-chloropropionaldehyde |
AT390208B (de) | 1988-05-09 | 1990-04-10 | Waagner Biro Ag | Verfahren zur entfernung von stickoxiden |
DE3815807A1 (de) | 1988-05-09 | 1989-11-23 | Sueddeutsche Kalkstickstoff | Verfahren zur selektiven nichtkatalytischen entfernung von stickoxiden aus abgasen |
US6051040A (en) * | 1988-12-28 | 2000-04-18 | Clean Diesel Technologies, Inc. | Method for reducing emissions of NOx and particulates from a diesel engine |
US4961917A (en) * | 1989-04-20 | 1990-10-09 | Engelhard Corporation | Method for reduction of nitrogen oxides with ammonia using promoted zeolite catalysts |
US5120695A (en) * | 1989-07-28 | 1992-06-09 | Degusaa Aktiengesellschaft (Degussa Ag) | Catalyst for purifying exhaust gases from internal combustion engines and gas turbines operated at above the stoichiometric ratio |
DE4221451C2 (de) | 1992-06-30 | 1996-02-29 | Werner Prof Dr Weisweiler | Verfahren und Vorrichtung zur katalysierten Entstickung der Abgase von Dieselmotoren und Mager-Ottomotoren |
DE4315278A1 (de) * | 1993-05-07 | 1994-11-10 | Siemens Ag | Verfahren und Einrichtung zur Dosierung eines Reduktionsmittels in ein stickoxidhaltiges Abgas |
JPH09500164A (ja) * | 1993-07-12 | 1997-01-07 | プラチナム プラス インコーポレーテッド | ディーゼルエンジンからのNOx及び微粒子の排出を減少させる方法 |
WO1995004211A1 (en) * | 1993-07-29 | 1995-02-09 | Platinum Plus, Inc. | METHOD FOR REDUCING NOx EMISSIONS FROM DIESEL ENGINES |
DE4417238C2 (de) * | 1994-05-17 | 2003-03-27 | Siemens Ag | Einrichtung zur Minderung der Stickoxide im Abgas eines mit Luftüberschuß betriebenen Verbrennungsmotors |
JP3604042B2 (ja) * | 1994-09-22 | 2004-12-22 | 株式会社リコー | 熱現像型ジアゾ複写材料 |
US5809775A (en) * | 1997-04-02 | 1998-09-22 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents |
US6399034B1 (en) * | 1997-05-14 | 2002-06-04 | Hjs Fahrzeugtechnik Gmbh & Co. | Process for reducing nitrogen oxides on SCR catalyst |
GB9808876D0 (en) * | 1998-04-28 | 1998-06-24 | Johnson Matthey Plc | Combatting air pollution |
US6266955B1 (en) * | 1999-08-20 | 2001-07-31 | Caterpillar Inc. | Diagnostic system for an emissions control on an engine |
US6606856B1 (en) * | 2000-03-03 | 2003-08-19 | The Lubrizol Corporation | Process for reducing pollutants from the exhaust of a diesel engine |
US6415602B1 (en) * | 2000-10-16 | 2002-07-09 | Engelhard Corporation | Control system for mobile NOx SCR applications |
CA2397923C (en) * | 2000-12-01 | 2007-08-07 | Fuel Tech Inc. | Selective catalytic reduction of no, enabled by side stream urea decomposition |
DE10103771A1 (de) * | 2001-01-27 | 2002-08-14 | Omg Ag & Co Kg | Verfahren zur Wiederherstellung der katalytischen Aktivität eines Katalysators, welcher im Abgastrakt eines Dieselmotors angeordnet ist und wenigstens eine Oxidationsfunktion aufweist |
DE10206028A1 (de) * | 2002-02-14 | 2003-08-28 | Man Nutzfahrzeuge Ag | Verfahren und Vorrichtung zur Erzeugung von Ammoniak |
US7229597B2 (en) | 2003-08-05 | 2007-06-12 | Basfd Catalysts Llc | Catalyzed SCR filter and emission treatment system |
US7807110B2 (en) * | 2004-03-12 | 2010-10-05 | Cormetech Inc. | Catalyst systems |
US20080286165A1 (en) * | 2004-05-05 | 2008-11-20 | Graupner Robert K | Guanidine Based Composition and System for Same |
US7481983B2 (en) * | 2004-08-23 | 2009-01-27 | Basf Catalysts Llc | Zone coated catalyst to simultaneously reduce NOx and unreacted ammonia |
DE102004043632A1 (de) * | 2004-09-07 | 2006-03-09 | Basf Ag | Verfahren zur Herstellung heterocyclischer quartärer Ammonium- und/oder Guanidinium-Verbindungen |
JP2006110485A (ja) * | 2004-10-15 | 2006-04-27 | Johnson Matthey Japan Inc | 排気ガス触媒およびそれを用いた排気ガス処理装置 |
JP4599989B2 (ja) * | 2004-10-28 | 2010-12-15 | 日立造船株式会社 | アンモニアの製造方法および脱硝方法 |
US7682586B2 (en) * | 2006-08-22 | 2010-03-23 | Babcock Power Environmental, Inc. | Thermal decomposition of urea in a side stream of combustion flue gas using a regenerative heat exchanger |
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