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RU2019100045A - КАТАЛИЗАТОР-АДСОРБЕР NOx - Google Patents

КАТАЛИЗАТОР-АДСОРБЕР NOx Download PDF

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Publication number
RU2019100045A
RU2019100045A RU2019100045A RU2019100045A RU2019100045A RU 2019100045 A RU2019100045 A RU 2019100045A RU 2019100045 A RU2019100045 A RU 2019100045A RU 2019100045 A RU2019100045 A RU 2019100045A RU 2019100045 A RU2019100045 A RU 2019100045A
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RU
Russia
Prior art keywords
catalyst
adsorber
storage material
layer
lanthanum
Prior art date
Application number
RU2019100045A
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English (en)
Other versions
RU2019100045A3 (ru
RU2764621C2 (ru
Inventor
Эндрю АРМИТЭЙДЖ
Дезире ДЮРАН МАРТИН
Ребекка МАКСИМОВИЧ
Пол Джеймс МИЛЛИНГТОН
Пол Ричард ФИЛЛИПС
Радж Рао РАДЖАРАМ
Стюарт Дэвид РИД
Дэниэл СУОЛЛОУ
Original Assignee
Джонсон Мэтти Паблик Лимитед Компани
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.)
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Publication date
Priority claimed from GB1610160.2A external-priority patent/GB2551332A/en
Priority claimed from GB1704901.6A external-priority patent/GB2560926A/en
Application filed by Джонсон Мэтти Паблик Лимитед Компани filed Critical Джонсон Мэтти Паблик Лимитед Компани
Publication of RU2019100045A publication Critical patent/RU2019100045A/ru
Publication of RU2019100045A3 publication Critical patent/RU2019100045A3/ru
Application granted granted Critical
Publication of RU2764621C2 publication Critical patent/RU2764621C2/ru

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • 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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    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
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    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
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    • 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
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0244—Coatings comprising several layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0248—Coatings comprising impregnated particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
    • F01N2510/0684—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having more than one coating layer, e.g. multi-layered coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Physics & Mathematics (AREA)
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Claims (36)

1. Катализатор-адсорбер NОх для обработки выбросов из двигателя на бедной смеси, где упомянутый катализатор-адсорбер NОх содержит первый слой, причем упомянутый первый слой состоит по существу из:
носителя;
одного или нескольких металлов платиновой группы, расположенных на данном носителе;
и накапливающего NОх материала;
где носитель содержит оксид алюминия или смешанный оксид, содержащий оксид алюминия;
один или несколько металлов платиновой группы состоят из смеси или сплава платины и палладия; и
накапливающий NОх материал состоит из оксида церия, допированного лантаном.
2. Катализатор-адсорбер NОх по п. 1, в котором накапливающий NОх материал содержит приблизительно 0,5-18 мол.% лантана.
3. Катализатор-адсорбер NОх по любому из предыдущих пунктов, в котором накапливающий NОх материал содержит приблизительно 1,0-15 мол.% лантана.
4. Катализатор-адсорбер NОх по любому из предыдущих пунктов, в котором накапливающий NОх материал содержит приблизительно 2,0-14 мол.% лантана.
5. Катализатор-адсорбер NОх по любому из пп. 1-4, в котором накапливающий NОх материал по существу не содержит бария.
6. Катализатор-адсорбер NОх по любому из предыдущих пунктов, в котором первый слой по существу не содержит родия.
7. Катализатор-адсорбер NОх по любому из предыдущих пунктов, в котором первый слой по существу не содержит щелочных металлов.
8. Катализатор-адсорбер NОх по любому из предыдущих пунктов, в котором первый слой по существу не содержит молекулярных сит.
9. Катализатор-адсорбер NОх по любому из предыдущих пунктов, в котором первый слой по существу не содержит диспрозия (Dу), эрбия (Еr), европия (Еu), гадолиния (Gd), гольмия (Но), лютеция (Lu), неодима (Nd), празеодима (Рr), прометия (Рm), самария (Sm), скандия (Sс), тербия (Тb), туллия (Тm), иттербия (Yb) и иттрия (Y).
10. Катализатор-адсорбер NОх, содержащий катализатор-адсорбер NОх по любому из пп. 1-9, нанесенный на металлическую или керамическую подложку.
11. Катализатор-адсорбер NОх по п. 10, в котором подложка является проточным монолитом или фильтрующим монолитом.
12. Катализатор-адсорбер NОх, содержащий катализатор-адсорбер NОх по любому из пп. 1-9, где данный катализатор экструдируют с образованием проточной или фильтрующей подложки.
13. Способ изготовления накапливающего NОх материала, в котором смешивают раствор лантансодержащей соли с частицами оксида церия, выполняют распылительную сушку данных частиц и нагревают высушенные распылением частицы.
14. Способ по п. 13, в котором распылительную сушку частиц выполняют при входной температуре от 250 до 350°С.
15. Способ по п. 13 или 14, в котором распылительную сушку частиц выполняют при выходной температуре от 80 до 150°С.
16. Способ по любому из пп. 13-15, в котором высушенный распылением порошок нагревают при температуре от 250 до 600°С.
17. Способ по любому из пп. 13-16, дополнительно включающий этап, на котором сушат нагретый, высушенный распылением порошок при температуре от 600 до 800°С.
18. Катализатор-адсорбер NОх для обработки выбросов из двигателя на бедной смеси, где упомянутый катализатор-адсорбер NОх содержит первый слой, причем упомянутый первый слой состоит по существу из:
носителя;
одного или нескольких металлов платиновой группы, расположенных на данном носителе;
и накапливающего NОх материала;
где носитель содержит оксид алюминия или смешанный оксид, содержащий оксид алюминия;
один или несколько металлов платиновой группы состоят из смеси или сплава платины и палладия; и
накапливающий NОх материал может быть получен с помощью способа по любому из пп. 13-17.
19. Система очистки выбросов для очистки потока выхлопного газа сгорания, содержащая двигатель на бедной смеси и катализатор-адсорбер NОх по любому из пп. 1-12;
где двигатель на бедной смеси находится в сообщении по текучей среде с катализатором-адсорбером NОх; и
где двигатель на бедной смеси представляет собой дизельный двигатель.
20. Система очистки выбросов по п. 19, дополнительно содержащая каталитическую систему селективного каталитического восстановления, фильтр мелких частиц, фильтрующую систему селективного каталитического восстановления, пассивный адсорбер NОх, систему с трехкомпонентным катализатором или их комбинации.
21. Способ очистки выхлопного газа из двигателя внутреннего сгорания, в котором осуществляют контакт выхлопного газа с катализатором-адсорбером NОх по любому из пп. 1-12 или 18, или с системой очистки выбросов по п. 19 или 20.
22. Способ очистки выхлопного газа из двигателя внутреннего сгорания по п. 21, в котором выхлопной газ находится при температуре приблизительно от 180 до 300°С.
RU2019100045A 2016-06-10 2017-05-31 КАТАЛИЗАТОР-АДСОРБЕР NOx RU2764621C2 (ru)

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GB1704901.6A GB2560926A (en) 2017-03-28 2017-03-28 NOx adsorber catalyst
GB1704901.6 2017-03-28
PCT/GB2017/051545 WO2017212219A1 (en) 2016-06-10 2017-05-31 NOx ADSORBER CATALYST

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