CN109695494A - 废气回收*** - Google Patents

废气回收*** Download PDF

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CN109695494A
CN109695494A CN201811236873.7A CN201811236873A CN109695494A CN 109695494 A CN109695494 A CN 109695494A CN 201811236873 A CN201811236873 A CN 201811236873A CN 109695494 A CN109695494 A CN 109695494A
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recovery system
condenser
gaseous effluent
gas recovery
exhaust gas
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CN109695494B (zh
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伊日·巴扎拉
纪尧姆·赫伯特
卢博斯拉夫·科拉尔
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Hanon Systems Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/27—Layout, e.g. schematics with air-cooled heat exchangers
    • 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
    • F01N3/05—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 air, e.g. by mixing exhaust with air
    • F01N3/055—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 air, e.g. by mixing exhaust with air without contact between air and exhaust gases
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N3/005—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for draining or otherwise eliminating condensates or moisture accumulating in the apparatus
    • 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
    • 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
    • F01N3/0205—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using heat exchangers
    • 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
    • F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
    • F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/31—Air-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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
    • 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
    • F01N2240/02—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 a heat exchanger
    • 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
    • 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
    • F01N2240/22—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 a condensation chamber
    • 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
    • F01N2570/22—Water or humidity
    • 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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  • 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)
  • Exhaust-Gas Circulating Devices (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Supercharger (AREA)

Abstract

本发明涉及一种废气回收***，所述废气回收***具有废气冷却器(1)，在所述废气冷却器下游接入冷凝器(2)，所述冷凝器由新鲜空气(7)穿流。

Description

废气回收***
技术领域
本发明涉及一种废气回收***。
背景技术
在废气回收的领域中，特别的挑战在于，回收的废气具有水蒸气，所述水蒸气能够冷凝并且能够损坏发动机或周围的构件，例如涡轮机的压缩机轮或联杆或曲轴。这特别是在冷的发动机中发生。
从US 2016/0115861 A1中已知一种废气回收***，所述废气回收***具有带有冷凝器的废气冷却器，所述废气冷却器由发动机冷却装置的水穿流。此外，在MTZ 06/2015第22页等描述了一种设备，所述设备将废气与新鲜空气混合并且将冷凝物导出。
发明内容
在所述背景下，本发明基于如下目的，提出一种简单构造的废气循环***，所述废气循环***至少减少结合冷凝物出现的问题。
所述目的的解决通过根据本发明的废气回收***来实现。
因此，废气冷却器具有在下游接入的冷凝器，所述冷凝器由新鲜空气穿流。通过使用新鲜空气，废气冷却器连同在下游接入的冷凝器能够尤其简单地构造。尤其地，废气已经被冷却，使得对冷凝器提出的关于温度稳定性的要求可容易地实现。这同样适用于借助新鲜空气的穿流。尤其有利地，废气冷却器能够与冷凝器一起形成结构单元或至少安置在其上。尤其地，冷凝器能够设置在废气收集器中，所述废气收集器能够称作为收集器、收集箱或顶箱。就此而言，根据本发明的废气回收***能够通过如下方式构成，即为废气冷却器，所述废气冷却器在同一结构单元中具有废气收集器，增加新鲜空气能够穿流废气收集器的可能性，使得构成根据本发明的冷凝器。
有利的改进形式在下文中描述。
冷凝器为了冷凝物的沉积能够具有至少一个要由新鲜空气穿流的管路，所述管路的管路轴线能够基本上水平地伸展，使得冷凝物在下方收集并且能够通过出口离开冷凝器。
此外，对于如下实施方式期待尤其好的结果，在所述实施方式中，管路轴线基本上垂直于废气的流动方向伸展。
为了要继续冷却至冷凝的废气至新鲜空气管路的更好的热传递，优选的是，所述新鲜空气管路具有肋。
对于冷凝器此外优选的是，所述冷凝器具有出口，所述出口通向箱。箱以有利的方式用于储存冷凝物。
尤其地，箱优选地能够与发动机的新鲜空气侧和/或内燃机的废气出口连接，使得根据运行状况出现在特定运行条件下将冷凝物从箱中回收到燃烧室中的(多个)选项，这提高了发动机的效率，或者在例如废气收集器充分加热的工作状态下将冷凝物蒸发成水蒸气，并且将所述水蒸气混入废气，使得所述水蒸气离开交通工具。在回收到燃烧室中时，降低燃料消耗和排放。
最后，冷凝器优选地设置在废气冷却器的废气收集器中，使得在此外紧凑的结构方式中，实现根据本发明的功能。
附图说明
下面参照附图详细阐述本发明的一个实施例。附图示出：
图1示出根据本发明的废气冷却器的示意侧视图；
图2示出根据本发明的废气冷却器的示意下视图；
图3示出处于第一工作状态的线路图；和
图4示出处于第二工作状态的线路图。
具体实施方式
如在图1中可见的那样，要回收的废气9首先穿流废气冷却器1，并且随后穿流冷凝器2。所述冷凝器在示出的情况下基本上通过由壳体环绕的空间形成，新鲜空气管路3引导穿过所述空间，所述新鲜空气管路的直径与描述的冷凝器壳体的尺寸相比仅不明显地更小。在其底部上存在用于冷凝物的出口4。借助5表示在冷凝器的下游接入的废气回收阀，所述废气回收阀调节释放水蒸气从而干燥的废气的流动速率。上面提到的壳体能够是在废气冷却器1的下游的废气收集器的壳体。尤其地，废气冷却器1能够具有大量分开的管路或通道，废气穿流所述管路或通道，其中各个废气流在描述的废气收集器的区域中汇合。
在图2的下视图中补充地表明肋8，所述肋能够在新鲜空气管路3上优选完全环绕地和/或平行于废气的流动方向构成。在图2的下视图中还可见，新鲜空气管路3完全穿过冷凝器的壳体地延伸。借助7表示新鲜空气流。可见的是，示出一个优选的布置，在所述布置中，新鲜空气流7基本上垂直于废气流伸展。
在图3中补充地示出箱11，所述箱与冷凝器2的出口4连接，使得经由管道10在箱11中收集冷凝物。如在图3中示出的那样，冷凝物能够从那里回收到燃烧室中。在图3中还表明，发动机能够具有废气涡轮增压机12，所述废气涡轮增压机在流动方向上处于催化器13上游。在增压的新鲜空气如在图3中可见的那样具有回收的废气之后，根据本发明在废气冷却器下游接入的冷凝器以特别的程度发挥其作用，因为回收的废气是干燥的，并且初始包含的水蒸气不能够对废气涡轮增压机的压缩轮造成损坏。
在图4中示出替选的线路，其中冷凝物同样收集到箱11中，然而将所述冷凝物从所述箱中蒸发并且混入离开交通工具的废气中。其余的构造对应于图3的构造。

Claims (7)

1.一种废气回收***，所述废气回收***具有废气冷却器(1)，在所述废气冷却器下游接入冷凝器(2)，所述冷凝器由新鲜空气(7)穿流。
2.根据权利要求1所述的具有废气冷却器(1)的废气回收***，
其特征在于，
所述冷凝器(2)具有要由所述新鲜空气(7)穿流的管路(3)。
3.根据权利要求2所述的具有废气冷却器(1)的废气回收***，
其特征在于，
所述新鲜空气管路(3)的管路轴线基本上垂直于废气(9)的流动方向伸展。
4.根据权利要求2或3所述的具有废气冷却器(1)的废气回收***，
其特征在于，
所述新鲜空气管路(3)具有肋(8)。
5.根据上述权利要求中任一项所述的具有废气冷却器(1)的废气回收***，
其特征在于，
所述冷凝器(2)具有出口(4)，所述出口通向箱(11)。
6.根据权利要求5所述的具有废气冷却器(1)的废气回收***，
其特征在于，
所述箱(11)能够与内燃机的燃烧室和/或废气出口连接。
7.根据上述权利要求中任一项所述的具有废气冷却器(1)的废气回收***，
其特征在于，
所述冷凝器(2)设置在废气收集器中。
CN201811236873.7A 2017-10-24 2018-10-23 废气回收*** Active CN109695494B (zh)

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