[go: up one dir, main page]

CN207363741U - 用于柴油发动机的排气后处理系统 - Google Patents

用于柴油发动机的排气后处理系统 Download PDF

Info

Publication number
CN207363741U
CN207363741U CN201590000782.7U CN201590000782U CN207363741U CN 207363741 U CN207363741 U CN 207363741U CN 201590000782 U CN201590000782 U CN 201590000782U CN 207363741 U CN207363741 U CN 207363741U
Authority
CN
China
Prior art keywords
catalyst
diesel
component
scr
exhaust gas
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.)
Active
Application number
CN201590000782.7U
Other languages
English (en)
Inventor
C·M·G·勒旺德
A·G·维德
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.)
Umicore AG and Co KG
Original Assignee
Umicore AG and Co KG
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 Umicore AG and Co KG filed Critical Umicore AG and Co KG
Application granted granted Critical
Publication of CN207363741U publication Critical patent/CN207363741U/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F01N3/10—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
    • F01N3/103—Oxidation catalysts for HC and CO only
    • 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
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • 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
    • F01N3/10—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
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • 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
    • F01N3/10—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]
    • 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
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/02—Exhaust filters
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • 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
    • F01N2570/12—Hydrocarbons
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • F01N2570/145—Dinitrogen oxide
    • 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
    • F01N2570/18—Ammonia
    • 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
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Materials Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

用于柴油发动机的排气后处理系统包括选择性催化还原(SCR)转化器部件、氨泄漏催化剂(ASC)部件、柴油氧化催化剂(DOC)部件和柴油颗粒过滤器(DPF)部件。在SCR‑ASC‑DOC‑DPF系统的上游喷射尿素和柴油。系统设计用于欧6及更高标准，并且与传统欧6系统相比，其具有显著的优点，例如降低的系统压降、显着降低的系统体积和提高的冷启动性能。

Description

用于柴油发动机的排气后处理系统
本发明涉及一种用于柴油发动机的新型排气后处理系统，所述系统包括选择性催化还原(SCR)转化器部件、氨泄漏催化剂(ASC)部件、柴油氧化催化剂(DOC)部件和柴油颗粒过滤器(DPF)部件。因此，本发明涉及一种用于减少来自柴油发动机的排气中存在的氮氧化物(NOx)和特定物质的排放的系统。特别地，本发明的系统在发动机冷启动期间提供了改进的NOx还原。
根据本发明的系统对于具有柴油后喷射选择方案的车辆(例如卡车和客车)具有特殊的意义。
在内燃发动机排气领域的立法要求HD(重型)卡车和客车的非常低的排放。同时，使用的测试循环变得更冷。通常难以在这些冷循环中减少NOx，特别是当所谓的后处理系统具有许多不同的功能如碳氢化合物氧化、烟灰过滤、NOx还原和氨泄漏减少的情况下变得更复杂时。最通用和可行的系统包括以下顺序的组件：氧化催化剂、烟灰过滤器、NOx还原催化剂和氨泄漏催化剂。
欧6立法聚焦于减少NOx排放的排气后处理系统。用于使用精确喷射并均匀分布在排气系统中的还原剂(尿素/水溶液)的选择性催化还原的SCR系统具有高转化率的潜力。这增加了处理氮氧化物原始排放物的范围，并且可能对燃料消耗和CO2排放物具有对应的积极影响。通过提高DOC之前和SCR催化剂之前的排气气体温度，可以显着优化整体排气后处理。
各种因素可能影响SCR系统的效率。这些包括重要的限制性操作条件，例如尿素/水溶液的蒸发质量或由SCR催化剂上游的尿素/水溶液形成的氨的均匀分布程度，以及影响催化剂本身(包括DOC和SCR催化剂)的标准。
具有贫燃发动机的现代汽车的常规排气系统配备有一系列氧化催化剂、微粒过滤器和用于在还原剂存在下选择性还原NOx(SCR)的催化剂。
在挥发性有机化合物和一氧化碳和SCR催化剂的氧化中起作用的氧化催化剂是本领域已知的并且公开在许多出版物中。
通常使用的颗粒过滤器是具有多个入口和出口通道的所谓的壁流式过滤器。入口通道在其出口处关闭，并且出口通道在其入口处关闭，使得流入过滤器中的气体被迫通过限定通道的多孔壁，由此将颗粒物质从气体中过滤出。
在SCR处理中，通常使用氨作为还原剂。氨是有毒化合物，并且优选通过作为氨前体被喷射到SCR催化剂上游的热排放气体中的尿素溶液的热分解在现场产生氨。
即使尿素是无害的并且相对容易存储在汽车上，使用尿素的液体溶液作为氨还原剂的前体也是有问题的，特别是在发动机的冷启动阶段，即当排放气体温度低于200℃时。
当作为液体溶液被喷射到排放气体中时，仅在从约200℃的温度，尿素以足够的量分解成用于SCR的氨。
最难处理的排放物是NOx，并且为了实现良好的循环结果，NOx还原需要在认证循环中提早开始。在如上所述的常规排放气体净化系统中，SCR催化剂作为第三排放气体净化单元放置在系统中，并且在发动机启动之后，在该催化剂达到其反应温度之前需要一段时间。
本发明代表申请人的几年前开发的高效排气后处理(HEAT)系统的第二代。该系统设计用于欧6及更高标准，这意味着它包括用于NOx还原(DeNOx)、氨泄漏去除、碳氢化合物和CO的氧化以及颗粒过滤的组件。
图1示出了具有放置在DeNOx组件上游的颗粒过滤的常规欧6系统，而图2所示的HEAT系统的第一代的特征在于将颗粒过滤放置在DeNOx组件的下游。
本发明，即HEAT系统的第二代，在图3中示出。第一代HEAT系统(HEAT-1)和本发明(HEAT-2)之间的主要区别在于：在HEAT-1中，尿素被喷射在发动机和消音器之间，而柴油被喷射在SCR-ASC和DOC-DPF之间的点处。在HEAT-2中，在SCR-ASC-DOC-DPF系统的上游喷射尿素和柴油。
许多现有技术出版物描述了排气后处理系统。因此，申请人的HEAT-1系统在EP 2399 011中公开，其中描述了通过去除颗粒、未完全燃烧的碳氢化合物、一氧化碳和氮氧化物(NOx)净化来自柴油发动机的排放气体的方法，其中特别聚焦于简单但有效的过滤器再生方法。
在US 6,863,874中描述了一种方法，利用该方法通过氧化(过滤器在其后)去除排放气体中的杂质，其中烟灰被二氧化氮和氧气氧化。进一步在下游，将还原剂喷射到NOx吸收器中，并随后安装三元催化剂或用于选择性还原的催化剂。
US 8,484,954描述了一种用于使用SCR催化转化器选择性地净化内燃发动机的排放气体的方法和装置，其中在排放气体进入SCR催化转化器中之前，计量至排放气体的还原剂。将过量的还原剂加入到排放气体中，排放气体在离开SCR催化转化器之后被部分地输送通过氧化催化转化器并且部分地通过绕过氧化催化转化器的旁路输送到第二SCR催化转化器。在氧化催化转化器中，流出第一SCR催化转化器的过量NH3的一半被转化为NOx，并在与不变地流动通过旁路的过量NH3的另一半混合后反应形成无害的氮。
US 2011/0047994公开了一种排放气体净化装置，其包括排放气体通道、第一氧化催化剂、选择性催化还原催化剂、氧化-还原催化剂和尿素/水供给装置。排放气体流过设置在排放气体通道中的第一氧化催化剂。选择性催化还原催化剂设置在第一氧化催化剂的下游。氧化-还原催化剂设置在选择性催化还原催化剂的下游。氧化-还原催化剂具有受温度影响的还原性能和氧化性能，其中在高于氧化-还原催化剂的还原性能大于氧化-还原催化剂的氧化性能的温度的温度下，氧化-还原催化剂的氧化性能大于氧化-还原催化剂的还原性能。尿素/水供应装置在选择性催化还原催化剂上游供应尿素/水
从DE 10 2004 049 289已知用于柴油发动机的排气后处理系统。该系统包括串联的用于选择性还原氮氧化物的部件、具有氧化催化剂的部件和具有柴油颗粒过滤器的部件。供给辅助剂(例如氨和尿素)的输送管沿排放气体的流动方向设置在SCR催化转化器部件的上游。SCR安装在氧化催化剂部件的上游，氧化催化剂部件依次沿排放气体的流动方向安装在颗粒过滤器部件的上游。因此，系统配置是沿排放气体的流动方向的尿素-SCR-DOC-DPF。
如已经提到的，根据本发明的系统(HEAT-2)的配置不同于具有放置在DeNOx组件上游的颗粒过滤的常规欧6系统和具有放置在DeNOx组件下游的颗粒过滤器的HEAT系统的第一代(HEAT-1)。在常规系统中，排放气体从发动机流到氧化催化剂(DOC)。然后将氧化的排放气体输送到柴油颗粒过滤器(DPF)。此后，将还原剂(例如尿素，通常为尿素的水溶液)喷射到气体中，并且然后将混合的气体引入用于选择性催化还原(SCR)的催化剂中，排放气体从该处通过氨泄漏催化剂(ASC)，并作为净化的气体离开系统。
DOC是含有用于NO2形成的Pt的柴油氧化催化剂，并且DPF是催化的烟灰过滤器，其也可以包含用于NO2形成的Pt。SCR催化剂通常是基于沸石的催化剂。
与常规系统相比，HEAT-1系统具有颠倒的配置，即SCR-ASC在DOC-DPF前面，并且其呈现优于常规系统的优点，特别是关于有效的烟尘过滤器再生。它还确保冷启动时的高NOx转化。
本发明的HEAT-2系统在许多方面优于常规系统和HEAT-1而是新颖的：
(1)所有的排气系统组件(“组块”)可以直接安装在彼此之后，即，SCR-ASC-DOC-DPF。
(2)组块可以罐装在一起，即内置到同一壳体中。对于条件(1)和(2)，必须满足以下条件(3)和(4)以应用：
(3)尿素和柴油都可以被喷射在发动机和消声器之间。
(4)SCR可以维持和部分氧化柴油碳氢化合物，其偶尔需要被喷射，以便升高DPF再生的排气温度。
如果在SCR和氨泄漏催化剂上实现了碳氢化合物和一氧化碳的充分氧化，则将潜在地有可能避开DOC，即除去DOC。因此：
(5)可以移除DOC，从而留下仅包括SCR-ASC-DPF的简化系统。
根据本发明的系统优于其前身(HEAT-1)和适用于欧6的常规系统而呈现以下优点：
显著降低的系统压降ΔP，
显著降低的系统体积，
与传统的欧6系统相比提高的冷启动性能，
由于简单的制造和含Pt的DOC的潜在移除而显著降低的成本，以及
使用该系统作为欧4/5基于V2O5的SCR系统的扩展或修改的可能性。

Claims (2)

1.一种用于柴油发动机的排气后处理系统，所述系统包括选择性催化还原转化器部件、氨泄漏催化剂部件、柴油氧化催化剂部件和柴油颗粒过滤器部件，其特征在于，在选择性催化还原-氨泄漏催化剂-柴油氧化催化剂-柴油颗粒过滤器系统的上游喷射尿素和柴油，所有的排气系统组件直接安装在彼此之后作为连续的选择性催化还原-氨泄漏催化剂-柴油氧化催化剂-柴油颗粒过滤器构造。
2.根据权利要求1所述的用于柴油发动机的排气后处理系统，其特征在于，如果在选择性催化还原转化器部件和氨泄漏催化剂部件上实现了碳氢化合物和一氧化碳的充分氧化，则移除柴油氧化催化剂部件，从而留下仅包括选择性催化还原转化器部件、氨泄漏催化剂部件和柴油颗粒过滤器部件的简化系统。
CN201590000782.7U 2014-06-30 2015-06-24 用于柴油发动机的排气后处理系统 Active CN207363741U (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA201400346 2014-06-30
DKPA201400346 2014-06-30
PCT/EP2015/064239 WO2016001034A1 (en) 2014-06-30 2015-06-24 An exhaust aftertreatment system for a diesel engine

Publications (1)

Publication Number Publication Date
CN207363741U true CN207363741U (zh) 2018-05-15

Family

ID=53498979

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201590000782.7U Active CN207363741U (zh) 2014-06-30 2015-06-24 用于柴油发动机的排气后处理系统

Country Status (3)

Country Link
CN (1) CN207363741U (zh)
DE (1) DE212015000170U1 (zh)
WO (1) WO2016001034A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999683A (zh) * 2018-07-17 2018-12-14 山东艾泰克环保科技股份有限公司 一种发动机后处理封装装置
CN110206621A (zh) * 2019-05-29 2019-09-06 一汽解放汽车有限公司 一种宽温度窗口的高效柴油机后处理装置及其控制方法
CN112127975A (zh) * 2020-10-30 2020-12-25 广西玉柴机器股份有限公司 一种混合动力柴油机排放控制的催化方法及装置
CN112412588A (zh) * 2019-08-20 2021-02-26 汪利峰 柴油机尾气后处理催化剂单元
CN114575971A (zh) * 2022-03-01 2022-06-03 东风商用车有限公司 利用纯氨气的后处理系统及其方法
CN116357434A (zh) * 2021-12-27 2023-06-30 通用汽车环球科技运作有限责任公司 用于柴油发动机的排气系统布局

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3372798B1 (en) 2017-03-08 2020-03-04 Perkins Engines Company Limited A compact selective catalytic reduction system
US20180283249A1 (en) * 2017-03-28 2018-10-04 Johnson Matthey Public Limited Company Egr urea hydrolysis
CN111350574B (zh) * 2018-12-23 2024-12-27 营口福泰科技有限责任公司 一种汽车国6排放后处理系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021647A1 (en) 1998-10-12 2000-04-20 Johnson Matthey Public Limited Company Process and apparatus for treating combustion exhaust gas
DE10300298A1 (de) * 2003-01-02 2004-07-15 Daimlerchrysler Ag Abgasnachbehandlungseinrichtung und -verfahren
DE102004049289B4 (de) 2004-10-09 2018-02-15 Robert Bosch Gmbh Abgasnachbehandlungssystem und Abgasnachbehandlungsverfahren für einen Verbrennungsmotor
DE102008026178A1 (de) 2008-05-30 2009-12-03 Deutz Ag SCR-Katalysator mit hohem Wirkungsgrad
EP2399011B1 (en) 2009-02-20 2013-04-24 Haldor Topsøe A/S Method for purification of exhaust gas from a diesel engine
JP2011052611A (ja) 2009-09-02 2011-03-17 Toyota Industries Corp 排気ガス浄化装置
US9528413B2 (en) * 2010-07-30 2016-12-27 Ford Global Technologies, Llc Synergistic SCR/DOC configurations for lowering diesel emissions
US20120216529A1 (en) * 2011-02-28 2012-08-30 Cummins Intellectual Property, Inc. Engine exhaust aftertreatment system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999683A (zh) * 2018-07-17 2018-12-14 山东艾泰克环保科技股份有限公司 一种发动机后处理封装装置
CN110206621A (zh) * 2019-05-29 2019-09-06 一汽解放汽车有限公司 一种宽温度窗口的高效柴油机后处理装置及其控制方法
CN112412588A (zh) * 2019-08-20 2021-02-26 汪利峰 柴油机尾气后处理催化剂单元
CN112127975A (zh) * 2020-10-30 2020-12-25 广西玉柴机器股份有限公司 一种混合动力柴油机排放控制的催化方法及装置
CN116357434A (zh) * 2021-12-27 2023-06-30 通用汽车环球科技运作有限责任公司 用于柴油发动机的排气系统布局
CN114575971A (zh) * 2022-03-01 2022-06-03 东风商用车有限公司 利用纯氨气的后处理系统及其方法
CN114575971B (zh) * 2022-03-01 2022-12-23 东风商用车有限公司 利用纯氨气的后处理系统及其方法

Also Published As

Publication number Publication date
WO2016001034A1 (en) 2016-01-07
DE212015000170U1 (de) 2017-02-14

Similar Documents

Publication Publication Date Title
CN207363741U (zh) 用于柴油发动机的排气后处理系统
US10989096B2 (en) Close coupled single module aftertreatment system
RU2524165C2 (ru) Способ очистки выхлопного газа дизельного двигателя
EP2819769B1 (en) Method for the removal of noxious compounds from engine exhaust gas
CN101564646B (zh) 净化柴油机废气的方法
JP6074912B2 (ja) 排気ガス浄化システム及び排気ガス浄化方法
KR101875228B1 (ko) Ｕｒｅａ-ｓｃｒ 시스템 장치 및 제어방법
US8402754B2 (en) Apparatus for purifying exhaust gas
CN107002533B (zh) 燃烧式发动机的排放气体的后处理装置
CN113958387B (zh) 用于清洁来自压燃式发动机的废气的系统
US20130232953A1 (en) Exhaust-gas aftertreatment system and method for exhaust-gas aftertreatment
JP2013241859A (ja) 排気ガス浄化システム及び排気ガス浄化方法
KR20110117323A (ko) 암모니아 분해 모듈을 가지는 디젤엔진 배기가스 배출장치
JP2009114930A (ja) 排気浄化装置
US10279313B2 (en) Method, multifunctional filter and system for the removal of particulate matter and noxious compounds from engine exhaust gas
CN106471230B (zh) 用于燃烧式发动机的排放气体后处理装置
JP6020105B2 (ja) ディーゼルエンジンの排気ガス浄化方法及び排気ガス浄化システム
KR20160051359A (ko) 자동차의 배기가스 정화장치
US20160131001A1 (en) Catalyst design for selective-catalytic-reduction (scr) filters
JP2009115022A (ja) 排気浄化装置
CN104136099B (zh) 用于从发动机废气中除去有害化合物的方法和系统
WO2015150000A1 (en) Method and system for the removal of particulate matter and noxious compounds from engine exhaust gas

Legal Events

Date Code Title Description
GR01 Patent grant