CN107304702A - 用于内燃机废气后处理系统的混合装置 - Google Patents

用于内燃机废气后处理系统的混合装置 Download PDF

Info

Publication number
CN107304702A
CN107304702A CN201710266822.8A CN201710266822A CN107304702A CN 107304702 A CN107304702 A CN 107304702A CN 201710266822 A CN201710266822 A CN 201710266822A CN 107304702 A CN107304702 A CN 107304702A
Authority
CN
China
Prior art keywords
mixing arrangement
arrangement according
waste gas
equipment
axis
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.)
Granted
Application number
CN201710266822.8A
Other languages
English (en)
Other versions
CN107304702B (zh
Inventor
A.德林
S.德祖拉内克
M.法贝尔
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.)
MAN Energy Solutions SE
Original Assignee
MAN Diesel and Turbo SE
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 MAN Diesel and Turbo SE filed Critical MAN Diesel and Turbo SE
Publication of CN107304702A publication Critical patent/CN107304702A/zh
Application granted granted Critical
Publication of CN107304702B publication Critical patent/CN107304702B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/029—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 using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to 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
    • F01N3/08—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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • B01F25/43161—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod composed of consecutive sections of flat pieces of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31323—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices used successively
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
    • B01F25/431973—Mounted on a support member extending transversally through the mixing tube
    • 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
    • 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
    • F01N3/023—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 using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/029—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 using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust
    • F01N3/0293—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 using means for regenerating the filters, e.g. by burning trapped particles by adding non-fuel substances to exhaust injecting substances in exhaust stream
    • 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
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F01N3/2821—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates the support being provided with means to enhance the mixing process inside the converter, e.g. sheets, plates or foils with protrusions or projections to create turbulence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0422—Numerical values of angles
    • 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
    • F01N2240/20—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 flow director or deflector
    • 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
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Accessories For Mixers (AREA)

Abstract

一种用于内燃机废气后处理系统的混合装置(1)，即用于将液体,特别是氨或氨前体物质与废气混合，其具有在其中引导废气的管道(2)，其中，至少一个设备(3a;3b)位于管道(2)中，其包括处于限定角度的板状元件(4a,5a;4b,5b)，其中在该或每个装置(3a;3b)的区域中的废气首先冲击板状元件(4a,5a;4b,5b)的连接区域(7a;7b)，然后能够经由板状元件(4a,5a;4b,5b)被传导，其从连接区域(7a;7b)开始在废气的流动方向上分叉。

Description

用于内燃机废气后处理系统的混合装置
技术领域
本发明涉及一种用于内燃机废气后处理系统的混合装置。
背景技术
在例如发电厂中使用的固定式内燃机的燃烧过程中，以及在例如船上使用的非固定式内燃机的燃烧过程中产生氮氧化物，其中，这些氮氧化物通常在化石燃料例如煤、坑煤、褐煤、矿物油或重质燃料油的燃烧期间产生。为此，将废气后处理系统配备给这样的内燃机，特别用于离开内燃机的废气的脱氮。为了还原废气中的氮氧化物，在实践中已知的废气后处理系统中主要使用所谓的SCR催化转化器。在SCR催化转化器中发生氮氧化物的选择性催化还原，其中，为了还原氮氧化物，需要氨(NH3)作为还原剂。为了该目的，将氨或氨前体物质，例如尿素，以液体形式在SCR催化转化器上游引入废气中，重要的是氨或氨前体物质与废气在SCR催化转化器的上游充分混合。为此，根据实践，在氨或氨前体物质的引入与SCR催化转化器之间需要相对长的混合回路。因此，需要一种用于废气后处理系统的混合装置，借助于该混合装置，液体可被有效地引入废气流中并与废气流混合，即甚至特别是当仅有相对短的混合回路可用的时候。
发明内容
由此出发，本发明所基于的目的是创造一种用于内燃机废气后处理系统的新型混合装置。该目的通过根据权利要求1的用于内燃机的废气后处理系统的混合装置来实现。根据本发明，至少一个设备定位在管道中，该管道包括处于限定角度的板状元件，其中，在该或每个设备的区域中的废气首先冲击板状元件的连接区域，然后可以经由该板状元件传导，板状元件从连接区域开始在废气的流动方向上分叉。本发明使得液体与废气流特别有效的混合成为可能。废气流冲击相应设备的板状元件的连接区域，由此引起湍流的废气流以及被引入废气流中的液体射流，该液体射流可有效地与废气混合。
根据有利的进一步的改进方案，在该或每个设备的区域中，相应的板状元件被紧固在共同的支撑轴线中或经由共同的支撑轴线紧固，其中，相应的设备经由相应的支撑轴线紧固至管道的壁，其中，支撑轴线设计成使得其用于引导液体，并且其中，支撑轴线配备有计量设备，经由其，在板状元件的连接区域的下游，可将液体引入至废气中。通过这种方式，可以将液体特别有效地引入废气流中并与其混合。
根据有利的进一步改进方案，相应的板状元件在该或每个设备的区域中包夹40°与160°之间的角度，优选在60°与120°之间，最优选在70°与110°之间。相应的设备的板状元件的相对位置允许带有废气流的液体的特别有利的混合。
根据另一有利的进一步的改进方案，混合装置包括多个设备，其在废气的流动方向上一个接一个地定位，其在各情况中包括处于限定角度的板状元件和支撑轴线，其中，一个接一个定位的设备的支撑轴线关于彼此不平行延伸，并且在投影中特别包夹40°与150°之间，优选70°与120°之间，最优选80°与100°之间的角度。特别是当在混合装置中时包含板状元件的多个设备从流动方向上看是一个接一个地定位的时，则液体可以特别有利且有效地与废气流混合。
根据另一有利的进一步的改进方案，混合装置包括定位在该或每个设备上游的挡板。特别是当混合装置包括可选的挡板时，可以进一步改善废气流与待引入废气流中的液体的混合。
优选地，在该或每个设备的区域中，其板状元件和/或挡板携带催化活性涂层。这用于改善废气后处理。
附图说明
本发明优选的进一步的改进方案由从属权利要求和以下说明中获得。本发明的示例性实施方案通过附图更详细地说明，但不限于此。其中：
图1显示了根据本发明的用于内燃机废气后处理系统的混合装置的示意性透视图。
附图标记清单
1 混合装置
2 管道
3a 设备
3b 设备
4a 板状元件
4b 板状元件
5a 板状元件
5b 板状元件
6 流动方向
7a 连接区域
7b 连接区域
8a 棱边
8b 棱边
9a 棱边
9b 棱边
10a 棱边
10b 棱边
11a 棱边
11b 棱边
12a 支撑轴线
12b支撑轴线。
具体实施方式
本发明涉及一种用于内燃机废气后处理系统的混合装置，例如用于发电厂中的固定式内燃机或用于船上使用的非固定式内燃机。特别是，该混合装置用在利用重质燃油运行的船用柴油发动机上的废气后处理系统上。根据本发明的混合装置用于将液体与废气流混合，其中，特别是氨如尿素的氨前体物质作为液体将与废气流混合，以便可有效地还原位于混合装置下游的废气后处理系统的SCR催化转化器中废气的氮氧化物。
根据本发明的用于将液体与废气流混合的混合装置1包括管道2，废气或废气流在管道2中被引导。在图1的示例性实施方案中，废气管2在横截面中具有圆形轮廓。引导废气流的废气管2也可以具有不同地设计轮廓。
在传导废气或废气流的管道2中，定位有至少一个设备3a,3b，其包括分别处于角度的板状元件4a,5a和4b,5b。在所示出的示例性实施方案中，在废气或废气流的流动方向6上看，两个这样的设备3a,3b在管道2中一个接一个地定位，这些设备3a和3b中的每一个因此相应地包括板状元件4a和5a以及4b和5b。
在流动方向6上流过管道2的废气首先冲击分别在相应的设备3a和3b的区域内的相应的设备3a和3b的相应地板状元件4a,5a和4b,5b的相应连接区域7a和7b，然后经由分别在废气流动方向上分叉的板状元件4a,5a和4b,5b从相应的连接区域7a,7b开始传导。
在所示的本发明的优选示例性实施方案中，相应的设备3a,3b分别包括两个板状元件4a,5a和4b,5b，其以圆形部段的形式设计轮廓，并且各相应地具有直棱边8a,9a和8b,9b，且各相应地具有圆弧形棱边10a,11a和10b,11b。在每个设备3a,3b的区域中，相应的板状元件4a,5a和4b，5b在直棱边8a,9a和8b,9b的区域中彼此连接，在形成相应的连接区域7a,7b的情况下，废气流因此首先冲击在相应的设备3a,3b的区域内的相应的设备比3a, 3b的相应板状元件4a,5a和4b,5b的相应地相互连接的棱边8a,9a和8b,9b。在相应的设备3a,3b的区域中，板状元件4a,5a和4b,5b可在尺寸上不同和/或不同地设计轮廓，和/或具有相对于管道2的纵向轴线的不同的调整角度。此外，可以将凹部引入相应的设备3a,3b的板状元件4a,5a和4b,5b中。
如已经解释的，板状元件4a,5a和4b,5b在每个设备3a,3b的区域中彼此连接，在形成连接部段或连接区域7a,7b的情况下，其中，从该连接区域7a,7b开始，相应的板状元件4a,5a和4b,5b在管道2的流动方向上看分别分叉成，使在相应的设备3a,3b区域中相应的板状元件4a,5a和4b,5b分别包夹40°与60°之间，优选60°与120°之间，最优选70°与110°之间的角度。
从图1明显看出，在所示每个设备3a,3b的区域中，相应的板状元件4a,5a和4b,5b分别连接在共同的支撑轴线12a,12b上，或者经由共同的支撑轴线12a,12b连接，或固定至共同的支撑轴线12a,12b，其中相应的设备3a,3b经由相应的支撑轴线12a,12b紧固到管道2的壁上。这里，相应的支撑轴线12a,12b横向于、优选垂直于管道2的纵向轴线。
在相应的设备3a,3b的区域中，相应地板状元件4a,5a和4b,5b的彼此连接的相应地棱边8a,9a和8b,9b不位于相应的支撑轴线12a,12b的纵向中心轴线上，而是棱边在相应的纵向中心轴线的上游平行于纵向中心轴线伸延。
根据本发明的有利的进一步改进方案提供成，混合装置1的如图1中所示的至少一个设备3a,3b的至少一个支撑轴线12a,12b分配有计量设备。在这种情况下，相应的支撑轴线12a,12b于是优选实施成用于引导待与废气流混合的液体的管道，其中，计量设备然后继续配备给相应的支撑轴线12a,12b，待与废气流混合的液体可经由其分别特别注入相应的板状元件4a,5a和4b,5b的相应连接区域7a和7b下游的废气中。通过这种方式，可以将待与废气混合的液体特别有利地引入废气中并与其混合。
如已经解释的，在图1所示的示例性实施方案中布置有两个设备3a,3b，其每个分别包括两个板状元件4a,5a和4b,5b，从在管道2中一个接一个的两个设备废气的流动方向6上看。
应指出，也可以在管道2中布置仅一个或一个接一个地布置多于两个这样的设备。
特别是当如图1中所示，带有板状元件4a,5a和4b,5b的多个设备3a,3b分别从废气的流动方向5上看一个接一个布置在管道2中，其支撑轴线12a,12b不彼此平行延伸，而是在流动方向6的投影中包夹40°与60°之间，优选70°与120°之间，最优选80°与100°之间的角度α。
在图1中所示的示例性实施方案中，在废气的流动方向6上看在管道2中一个接一个定位的两个设备3a,3b相对于彼此偏移90°，支撑轴线12a,12b因此在投影中相对于彼此包夹90°的角度。
相应的设备3a,3b的相应板状元件4a,5a和4b,5b，为了优化流动引导，可以有不同地设计轮廓和/或在尺寸上不同和/或具有相对于管道2的纵向轴不同的调整角度和/或可以包括凹部，优选携带含有特别是TiO2的催化活性涂层。
通过这种方式，所供应的尿素转化成NH3加上CO2的催化反应已可利用已经在相应的设备3a,3b的区域中的废气进行，由此，可以改进在位于混合装置1的下游的废气后处理设备的组件中、特别是在SCR催化转化器中的随后的废气后处理。
如图1所示，当多个设备3a, 3b在管道2的流动方向看一个接一个地布置在管道2中时，至少一个支撑轴线12a,12b还用于引导待引入废气中的液体，其中，然后设备中的至少一个分配有用于将液体引入或注入废气流中的对应的计量设备。
在图1的示例性实施方案中，这可以是在设备3a区域中的情况，或者也可以是在设备3b的区域中的情况，因为可进一步将对应的计量设备分配给图1所示的两个设备3a和3b，即其支撑轴线12a,12b，其中，待引入废气中的液体然后在两个设备3a,3b的区域中被注入到废气流中，这也可以是在设备3b区域中的情况。
供应液体也可以经由单独的管道来实现，其中液体的排出部离支撑轴线12和/或连接区域7a,7b的距离和/或挡板下游组件离挡板中心点的的距离遵循以下公式：0.1×cos(α/2)×挡板长度≤距离≤3×cos(α/2)×挡板长度。
混合装置1可任选地包括未示出的挡板，其位于该或每个设备3a,3b的上游。挡板可以具有基于管道2的纵向轴在20°与60°之间，优选30°和55°之间，优选40°和50°之间的调整角度。
挡板可以携带优选含有TiO2的催化活性涂层。
根据本发明的混合装置使得液体与废气流特别有利的混合成为可能。根据本发明的混合装置1包括分别位于管道2中的至少一个设备3a和3b，其包括分别彼此连接的板状元件4a,5a和4b,5b，在侧视图中看，板状元件呈V形地相对于彼此定位。因此，位于废气管道2中的设备3a,3b还描述为V形板混合设备3a,3b。
这些设备3a,3b中的每一个优选地分别包括两个板状元件4a,5a和4b,5b，其在形成连接区域7a,7b的情况中彼此连接，其中，废气流首先冲击该连接区域7a ,7b并且从该连接区域7a,7b开始分别经由在废气的流动方向6上分叉的板状元件4a,5a和4b,5b被引导。在废气的流动方向上看，液体优选地分别在相应的设备3a和3b的连接区域7a,7b的下游优选地经由分配于相应的V形板混合设备3a,3b的相应支撑轴线12和12b的计量设备被相应地注入到废气中。
混合装置1具有简单的结构，其中，V形板混合设备3a,3b仅产生轻微的压力损失，但在废气流与液体快速混合的情况中提供复杂的流场。
该或每个V形板混合设备3a,3b使引入废气中的液体宏观地输送到引导废气流的管道2的外棱边中。该或每个V板混合设备3a,3b产生稳定的回流区域，由此延长了注入的液体在混合回路中的停留时间。总的来说，混合回路可相对较短地来实施，其中，尽管如此仍确保液体与废气流的良好混合。

Claims (18)

1. 一种用于内燃机废气后处理系统的混合装置(1)，即用于将液体，特别是氨或氨前体物质与废气混合，其具有在其中引导所述废气的管道(2)，其特征在于：至少一个装置(3a; 3b)位于所述管道(2)中，其包括处于限定角度的板状元件(4a, 5a; 4b, 5b)，其中，在所述或每个装置(3a; 3b)的区域中的废气首先冲击所述板状元件(4a, 5a; 4b, 5b)的连接区域(7a; 7b)，然后能够经由所述板状元件(4a, 5a; 4b, 5b)被传导，所述板状元件从所述连接区域(7a, 7b)开始在所述废气的流动方向上分叉。
2. 根据权利要求1所述的混合装置，其特征在于：在所述或每个装置(3a; 3b)的区域中，所述相应的板状元件(4a, 5a; 4b, 5b)被紧固至公共的支撑轴线(12a; 12b)或经由公共的支撑轴线(12a; 12b)被紧固，其中，所述相应的装置(3a; 3b)经由所述相应的支撑轴线(12a; 12b)紧固至所述管道(2)的壁。
3. 根据权利要求2所述的混合装置，其特征在于：所述支撑轴线(12a; 12b)设计成使得其用于引导所述液体，并且，所述支撑轴线(12a; 12b)配备有计量设备，经由其，在所述板状元件(4a, 5a; 4b, 5b)的连接区域(7a; 7b)的下游，可将所述液体引入所述废气中。
4. 根据权利要求1至3中任一项所述的混合装置，其特征在于：在所述或每个装置(3a;3b)的区域中，所述相应的板状元件(4a, 5a; 4b, 5b)包含在40°与160°之间、优选在60°与120°之间、最优选在70°与110°之间的角度(α)。
5. 根据权利要求1至4中任一项所述的混合装置，其特征在于：在所述或每个装置(3a;3b)的区域中，所述板状元件(4a, 5a; 4b, 5b)以带有直棱边(8a，9a; 8b，9b)和圆弧形棱边(10a, 11a; 10b, 11b)的圆形部段的形式形成，其中所述相应的板状元件(4a, 5a; 4b,5b)在它们的直棱边(8a, 9a; 8b, 9b)的区域中彼此连接。
6. 根据权利要求1至5中任一项所述的混合装置，其特征在于：在所述或每个设备(3a;3b)的区域中，所述相应的板状元件(4a, 5a; 4b, 5b)在尺寸上不同。
7. 根据权利要求1至6中任一项所述的混合装置，其特征在于：在所述或每个设备(3a;3b)的区域中，所述相应的板状元件(4a, 5a; 4b, 5b)相对于所述管道(2)的纵向轴线具有不同的调整角度。
8. 根据权利要求1至7中任一项所述的混合装置，其特征在于在所述废气的流动方向上看一个接一个地定位的多个设备(3a, 3b)，其在每个情况中包括处于限定角度的板状元件(4a, 5a; 4b, 5b)和支撑轴线(12a, 12b)。
9. 根据权利要求8所述的混合装置，其特征在于：一个接一个地定位的设备(3a; 3b)的所述支撑轴线(12a; 12b)不彼此平行延伸，并且在投影中特别包夹在40°与150°之间，优选70°与120°之间，最优选80°与100°之间的角度。
10. 根据权利要求8或9所述的混合装置，其特征在于：至少一个所述设备(3a; 3b)的支撑轴线(12a, 12b)配备有计量设备。
11. 根据权利要求1至10中任一项所述的混合装置，其特征在于：在所述或每个设备(3a; 3b)的区域中，所述板状元件(4a, 5a; 4b, 5b)携带优选含有TiO2的催化活性涂层。
12. 根据权利要求1至11中任一项所述的混合装置，其特征在于定位在所述或每个设备(3a; 3b)的上游的挡板。
13.根据权利要求12所述的混合装置，其特征在于：所述挡板的调整角度在20°与60°之间，优选在30°与55°之间，最优选在40°与50°之间。
14.根据权利要求12至13所述的混合装置，其特征在于：所述挡板携带优选含有TiO2的催化活性涂层。
15.根据权利要求1至14中任一项所述的混合装置，其特征在于：在其中引导所述废气的所述管道(2)在横截面中设计为圆形。
16. 根据权利要求1至14中任一项所述的混合装置，其特征在于：在所述板状元件(4a,5a; 4b, 5b)中存在凹部。
17. 根据权利要求2至10中任一项所述的混合装置，其特征在于：所述支撑轴线(12a,12b)与所述管道轴线相交。
18.根据前述权利要求中任一项所述的混合装置，其特征在于：在将所述液体供应到所述废气管中时，所述液体的排出部离所述支撑轴线(12)和/或所述连接区域(7a,7b)的距离和/或所述挡板下游的组件离所述挡板中心点的距离遵循以下公式：0.1×cos(α/2)×挡板长度≤距离≤3×cos(α/2)×挡板长度。
CN201710266822.8A 2016-04-21 2017-04-21 用于内燃机废气后处理系统的混合装置 Active CN107304702B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016206825.3 2016-04-21
DE102016206825.3A DE102016206825A1 (de) 2016-04-21 2016-04-21 Mischvorrichtung für ein Abgasnachbehandlungssystem einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
CN107304702A true CN107304702A (zh) 2017-10-31
CN107304702B CN107304702B (zh) 2024-10-25

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111417771A (zh) * 2017-12-01 2020-07-14 Avl李斯特有限公司 排气气体后处理系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2111917A1 (de) * 2008-04-25 2009-10-28 Presswerk Struthütten GmbH Statischer Mischer, Verfahren zur Herstellung eines solchen und Mischeranordnung
CN102767411A (zh) * 2011-05-04 2012-11-07 J·埃贝斯佩歇合资公司 混合元件
CN102802774A (zh) * 2010-01-21 2012-11-28 流体元件国际公司 静态流混合和调节装置及制造方法
CN103764266A (zh) * 2011-08-24 2014-04-30 波森公司 混合器装置
CN103894082A (zh) * 2014-03-03 2014-07-02 东南大学 设置于气体通道中的气体混合器及其组成的气体混合装置
JP2014234815A (ja) * 2013-06-05 2014-12-15 本田技研工業株式会社 内燃機関の排気浄化装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2111917A1 (de) * 2008-04-25 2009-10-28 Presswerk Struthütten GmbH Statischer Mischer, Verfahren zur Herstellung eines solchen und Mischeranordnung
CN102802774A (zh) * 2010-01-21 2012-11-28 流体元件国际公司 静态流混合和调节装置及制造方法
CN102767411A (zh) * 2011-05-04 2012-11-07 J·埃贝斯佩歇合资公司 混合元件
CN103764266A (zh) * 2011-08-24 2014-04-30 波森公司 混合器装置
JP2014234815A (ja) * 2013-06-05 2014-12-15 本田技研工業株式会社 内燃機関の排気浄化装置
CN103894082A (zh) * 2014-03-03 2014-07-02 东南大学 设置于气体通道中的气体混合器及其组成的气体混合装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111417771A (zh) * 2017-12-01 2020-07-14 Avl李斯特有限公司 排气气体后处理系统
CN111417771B (zh) * 2017-12-01 2022-02-01 Avl李斯特有限公司 排气气体后处理系统

Also Published As

Publication number Publication date
KR20170120506A (ko) 2017-10-31
KR102271214B1 (ko) 2021-06-29
DE102016206825A1 (de) 2017-10-26
FI20175355A (fi) 2017-10-22
NO20170650A1 (en) 2017-10-23
JP6791802B2 (ja) 2020-11-25
JP2017194063A (ja) 2017-10-26

Similar Documents

Publication Publication Date Title
US8991160B2 (en) Reductant aqueous solution mixing device and exhaust aftertreatment device provided with the same
EP2861328B1 (en) Reductant decomposition and mixing system
US8938945B2 (en) Exhaust system
US10252225B2 (en) Method, apparatus and mixing device for evenly mixing reactant to exhaust gas flow
US9260994B2 (en) Reductant injection and mixing system
WO2012008570A1 (ja) 排気ガス浄化装置
KR20110028469A (ko) 배기 가스 첨가제/처리 시스템 및 그에 사용하기 위한 혼합기
EP3901434A1 (en) System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same
US10030560B2 (en) Exhaust purification device
US10480372B2 (en) Mixer in an exhaust gas system
JP2009002213A (ja) 排気処理装置
CN108223080B (zh) 排气后处理系统的混合设备、排气后处理系统和内燃机
JP2018109406A (ja) 排ガス装置
KR102231907B1 (ko) Scr 시스템의 가스상 환원제 주입장치
CN105604652A (zh) 用于运行用于内燃机废气后处理的设备的方法以及相应的设备
US20160032810A1 (en) Mixer for exhaust gas aftertreatment system
GB2533790A (en) Method, apparatus and device for improved aftertreatment of exhaust gas
JP6756629B2 (ja) 排気ガス浄化装置
CN107304702A (zh) 用于内燃机废气后处理系统的混合装置
JP2010116859A (ja) 排気浄化装置
CN107304702B (zh) 用于内燃机废气后处理系统的混合装置
FI128516B (en) Mixing arrangement and method for exhaust gas treatment
JP2015031156A (ja) 排気浄化装置
KR20140140758A (ko) 선박 엔진 배기관의 베인
JP2018071399A (ja) 配管ユニット

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: Augsburg

Applicant after: MAN ENERGY SOLUTIONS SE

Address before: Augsburg

Applicant before: Man Diesel & Turbo SE

CB02 Change of applicant information
GR01 Patent grant