RU2008106463A - Способ реактивации термически состарившихся каталитических нейтрализаторов-накопителей оксидов азота - Google Patents
Способ реактивации термически состарившихся каталитических нейтрализаторов-накопителей оксидов азота Download PDFInfo
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- B01D53/34—Chemical or biological purification of waste gases
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- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
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- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
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- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
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- 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
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- 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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- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
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Abstract
1. Способ реактивации термически состарившегося каталитического нейтрализатора-накопителя оксидов азота, который имеет основные соединения стронция или бария либо соединения стронция и бария на содержащем оксид церия материале-носителе, а также содержит образовавшиеся в результате термического старения соединения стронция и/или бария с материалом-носителем, отличающийся тем, что соединения стронция и/или бария с материалом-носителем разлагают путем их проводимой при температуре в пределах от 300 до 500°С обработки газовой смесью, содержащей диоксид азота в количестве от 0,05 до 5 об.%, водяной пар в количестве от 5 до 15 об.% и диоксид углерода в количестве от 0 до 20 об.%. ! 2. Способ по п.1, отличающийся тем, что каталитический нейтрализатор-накопитель оксидов азота является компонентом системы нейтрализации отработавших газов (ОГ), которой оснащено транспортное средство с двигателем, работающим на обедненных горючих смесях, и с системой рециркуляции ОГ, при этом в качестве газовой смеси для реактивации каталитического нейтрализатора-накопителя оксидов азота используют ОГ двигателя, а реактивацию каталитического нейтрализатора-накопителя оксидов азота проводят в рабочей точке работающего на обедненных горючих смесях двигателя, в которой температура ОГ составляет от 300 до 500°С. ! 3. Способ по п.2, отличающийся тем, что для повышения содержания оксидов азота в ОГ отключают систему рециркуляции ОГ и/или момент воспламенения горючей смеси в двигателе изменяют с таким расчетом, чтобы увеличить температуру в цилиндрах двигателя. ! 4. Способ по п.3, отличающийся тем, что ОГ, используемые для реактивации каталитического нейтр
Claims (8)
1. Способ реактивации термически состарившегося каталитического нейтрализатора-накопителя оксидов азота, который имеет основные соединения стронция или бария либо соединения стронция и бария на содержащем оксид церия материале-носителе, а также содержит образовавшиеся в результате термического старения соединения стронция и/или бария с материалом-носителем, отличающийся тем, что соединения стронция и/или бария с материалом-носителем разлагают путем их проводимой при температуре в пределах от 300 до 500°С обработки газовой смесью, содержащей диоксид азота в количестве от 0,05 до 5 об.%, водяной пар в количестве от 5 до 15 об.% и диоксид углерода в количестве от 0 до 20 об.%.
2. Способ по п.1, отличающийся тем, что каталитический нейтрализатор-накопитель оксидов азота является компонентом системы нейтрализации отработавших газов (ОГ), которой оснащено транспортное средство с двигателем, работающим на обедненных горючих смесях, и с системой рециркуляции ОГ, при этом в качестве газовой смеси для реактивации каталитического нейтрализатора-накопителя оксидов азота используют ОГ двигателя, а реактивацию каталитического нейтрализатора-накопителя оксидов азота проводят в рабочей точке работающего на обедненных горючих смесях двигателя, в которой температура ОГ составляет от 300 до 500°С.
3. Способ по п.2, отличающийся тем, что для повышения содержания оксидов азота в ОГ отключают систему рециркуляции ОГ и/или момент воспламенения горючей смеси в двигателе изменяют с таким расчетом, чтобы увеличить температуру в цилиндрах двигателя.
4. Способ по п.3, отличающийся тем, что ОГ, используемые для реактивации каталитического нейтрализатора-накопителя оксидов азота, содержат также кислород в количестве от 5 до 20 об.%, а в остальном - в основном азот, при этом обработку проводят в течение 0,5-5 ч.
5. Способ по п.4, отличающийся тем, что система нейтрализации ОГ имеет расположенный вблизи двигателя каталитический нейтрализатор и расположенный под днищем кузова каталитический нейтрализатор.
6. Способ по п.5, отличающийся тем, что оба каталитических нейтрализатора представляют собой или содержат каталитический нейтрализатор-накопитель оксидов азота.
7. Способ по п.5, отличающийся тем, что расположенный вблизи двигателя каталитический нейтрализатор представляет собой или содержит каталитический нейтрализатор дизельных ОГ с катализатором окисления или трехкомпонентный каталитический нейтрализатор, а расположенный под днищем кузова каталитический нейтрализатор представляет собой или содержит каталитический нейтрализатор-накопитель оксидов азота.
8. Способ реактивации термически состарившегося каталитического нейтрализатора-накопителя оксидов азота, который имеет основные соединения стронция или бария либо соединения стронция и бария на содержащем оксид церия материале-носителе, а также содержит образовавшиеся в результате термического старения соединения стронция и/или бария с материалом-носителем, отличающийся тем, что каталитический нейтрализатор-накопитель оксидов азота является компонентом системы выпуска отработавших газов, которой оснащено транспортное средство с двигателем, работающим на обедненных горючих смесях, при этом каталитический нейтрализатор-накопитель оксидов азота для его реактивации демонтируют в ходе очередного технического обслуживания и обрабатывают в течение 0,1-5 ч газовой смесью, содержащей оксиды азота в количестве от 1 до 35 об.%, кислород в количестве от 5 до 50 об.%, водяной пар в количестве от 5 до 30 об.%, диоксид углерода в количестве от 0 до 20 об.% и необязательно азот в количестве, недостающем до 100 об.%.
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DE102005034344A DE102005034344A1 (de) | 2005-07-22 | 2005-07-22 | Verfahren zur Reaktivierung thermisch gealterter Stickoxid-Speicherkatalysatoren |
DE102005034344.9 | 2005-07-22 |
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JP (1) | JP4829299B2 (ru) |
KR (1) | KR100879713B1 (ru) |
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AT (1) | ATE413224T1 (ru) |
BR (1) | BRPI0613986A2 (ru) |
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DE102006029080A1 (de) * | 2006-06-24 | 2007-12-27 | Umicore Ag & Co. Kg | Verfahren zur On-Board-Reaktivierung thermisch gealterter Stickoxid-Speicherkatalysatoren in Kraftfahrzeugen mit überwiegend mager betriebenen Verbrennungsmotoren |
US20080120970A1 (en) * | 2006-11-29 | 2008-05-29 | Marcus Hilgendorff | NOx Storage Materials and Traps Resistant to Thermal Aging |
DE102007023979B4 (de) * | 2007-05-23 | 2009-05-07 | Umicore Ag & Co. Kg | Zweistufiges Verfahren zur Reaktivierung thermisch gealterter Stickoxid-Speicherkatalysatoren |
DE202007018423U1 (de) | 2007-06-16 | 2008-08-21 | Umicore Ag & Co. Kg | Vorrichtung zur Reinigung von Abgasen unter gezielter Verwendung von Stickstoffdioxid |
DE102008045594B4 (de) | 2008-09-03 | 2012-05-16 | Audi Ag | Verfahren und Vorrichtung zur Zudosierung eines Reduktionsmittels in einen Abgasstrang einer Brennkraftmaschine eines Fahrzeuges |
KR101525302B1 (ko) * | 2013-05-29 | 2015-06-02 | 두산엔진주식회사 | 선택적 촉매 환원 시스템 및 선택적 촉매 환원용 촉매의 재생 방법 |
CN106270160B (zh) * | 2015-06-30 | 2018-03-16 | 奇瑞汽车股份有限公司 | 冲压模具在线生产辅助储气装备的工作方法 |
US10449522B2 (en) * | 2015-07-30 | 2019-10-22 | Basf Corporation | Process for manufacture of NOx storage materials |
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US4423019A (en) * | 1979-04-11 | 1983-12-27 | Standard Oil Company (Indiana) | Process for removing sulfur oxides from a gas |
CS223409B1 (en) * | 1981-04-17 | 1983-10-28 | Slavko Hudecek | Grafted copolymeres and method of preparation of the same |
US4546046A (en) * | 1983-03-10 | 1985-10-08 | Glasurit America, Inc. | Substrates with flexible coatings from epsilon-caprolactone modified acrylics |
JP2831638B2 (ja) * | 1985-04-03 | 1998-12-02 | 花王株式会社 | 洗浄剤組成物 |
DE4429446A1 (de) * | 1994-08-19 | 1996-02-22 | Basf Ag | Mischungen, enthaltend wasseremulgierbare Isocyanate |
JP3374569B2 (ja) * | 1995-01-10 | 2003-02-04 | 株式会社日立製作所 | 排ガス浄化触媒および浄化方法 |
CA2189836C (en) * | 1995-12-04 | 2004-05-25 | Angela S. Rosenberry | Coating composition and floor covering including the composition |
US20010021746A1 (en) * | 1996-02-29 | 2001-09-13 | Minou Nabavi | Isocyanate-based compositions, their process for utilization, their utilization for producing coatings and coating thus obtained |
US5736604A (en) * | 1996-12-17 | 1998-04-07 | Bayer Corporation | Aqueous, two-component polyurea coating compositions |
DE19838282A1 (de) * | 1998-08-24 | 2000-03-02 | Degussa | Stickoxid-Speichermaterial und daraus hergestellter Stickoxid-Speicherkatalysator |
US6221494B1 (en) * | 1998-11-03 | 2001-04-24 | E.I. Du Pont De Nemours And Company | Reactive oligomers for isocyanate coatings |
US6610777B1 (en) * | 1999-07-30 | 2003-08-26 | Ppg Industries Ohio, Inc. | Flexible coating compositions having improved scratch resistance, coated substrates and methods related thereto |
DE19961165A1 (de) * | 1999-12-17 | 2001-08-02 | Volkswagen Ag | Verfahren zur Entschwefelung eines in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten NO¶x¶-Speicherkatalysators |
JP3462445B2 (ja) * | 2000-04-19 | 2003-11-05 | 日野自動車株式会社 | 排気浄化装置 |
JP2002115534A (ja) * | 2000-10-12 | 2002-04-19 | Hitachi Ltd | 内燃機関の排ガス浄化装置 |
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ATE421375T1 (de) * | 2002-07-31 | 2009-02-15 | Umicore Ag & Co Kg | Verfahren zur regenerierung eines stickoxid- speicherkatalysators |
DE10361793A1 (de) | 2003-12-31 | 2005-07-28 | Volkswagen Ag | NOx-Speicherkatalysator |
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DE102005034344A1 (de) | 2007-01-25 |
KR20080022215A (ko) | 2008-03-10 |
KR100879713B1 (ko) | 2009-01-22 |
CA2608602C (en) | 2010-12-21 |
RU2398632C2 (ru) | 2010-09-10 |
ATE413224T1 (de) | 2008-11-15 |
JP2009501623A (ja) | 2009-01-22 |
WO2007009679A3 (de) | 2007-03-08 |
CN101227979A (zh) | 2008-07-23 |
BRPI0613986A2 (pt) | 2011-03-01 |
DE502006002011D1 (de) | 2008-12-18 |
US7638452B2 (en) | 2009-12-29 |
EP1877187A2 (de) | 2008-01-16 |
CA2608602A1 (en) | 2007-01-25 |
CN101227979B (zh) | 2010-05-19 |
US20090131243A1 (en) | 2009-05-21 |
JP4829299B2 (ja) | 2011-12-07 |
WO2007009679A2 (de) | 2007-01-25 |
EP1877187B1 (de) | 2008-11-05 |
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