CN108167050A - 筒式scr后处理混合装置 - Google Patents

筒式scr后处理混合装置 Download PDF

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Publication number
CN108167050A
CN108167050A CN201711410589.2A CN201711410589A CN108167050A CN 108167050 A CN108167050 A CN 108167050A CN 201711410589 A CN201711410589 A CN 201711410589A CN 108167050 A CN108167050 A CN 108167050A
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CN
China
Prior art keywords
urea
mixing chamber
mixer
cartridge type
fast assembling
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.)
Pending
Application number
CN201711410589.2A
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English (en)
Inventor
徐超
朱亮
胡忠斌
冯有康
郑天峰
林浩健
曲洪亮
段军
段一军
郭博
郭一博
徐文清
贡豪
吴杰
潘建
惠志君
程国伦
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.)
Wuxi Weifu Lida Catalytic Converter Co Ltd
Original Assignee
Wuxi Weifu Lida Catalytic Converter Co Ltd
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
Application filed by Wuxi Weifu Lida Catalytic Converter Co Ltd filed Critical Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority to CN201711410589.2A priority Critical patent/CN108167050A/zh
Publication of CN108167050A publication Critical patent/CN108167050A/zh
Pending legal-status Critical Current

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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
    • F01N3/24—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
    • 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
    • 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
    • F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
    • 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

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

Abstract

本发明涉及一种筒式SCR后处理混合装置，其特征是：包括尿素混合腔，尿素混合腔的前后端分别连接第一快速拆装法兰和第二快速拆装法兰，在尿素混合腔的前后分别固定气流混合器和气流均匀器，在尿素混合腔中设置尿素混合器，在尿素混合腔的侧壁上设置尿素喷射底座。所述尿素喷射底座与尿素混合器呈90°设置。本发明结构简单，设计精良，氨混效率高，拆装方便，后期若在特殊条件下产生尿素的结晶，处理方便，适用于国IV及国V排放标准。

Description

筒式SCR后处理混合装置
技术领域
本发明涉及一种筒式SCR后处理混合装置，属于柴油机尾气处理系统设备技术领域。
背景技术
随着柴油机排放法规的日益严格，尾气后处理技术是必须采用的技术措施。而SCR能够满足国IV及国V排放标准，SCR的基本原理是通过尿素喷射系统（俗称尿素泵）将32.5%浓度的尿素水溶液雾化后喷入排气管中与发动机尾气混合，尿素水溶液经过热解和水解反应生成氨气（NH3），在催化剂的作用下氨气将柴油机尾气中有害的氮氧化合物（NOx）转化为无害的氮气（N2）和水，发动机尾气处理技术SCR路线的首要任务是使尾气与氨雾有效混合并发生化学反应，同时在进入催化剂前保证足够温度。
发明内容
本发明的目的是克服现有技术中存在的不足，提供一种筒式SCR后处理混合装置，结构简单，设计紧凑，能够使氨气和尾气充分混合，解决现有技术中SCR处理汽车尾气过程中尾气与氨气混合不充分造成尾气处理不完全的问题。
按照本发明提供的技术方案，所述筒式SCR后处理混合装置，其特征是：包括尿素混合腔，尿素混合腔的前后端分别连接第一快速拆装法兰和第二快速拆装法兰，在尿素混合腔的前后分别固定气流混合器和气流均匀器，在尿素混合腔中设置尿素混合器，在尿素混合腔的侧壁上设置尿素喷射底座。
进一步地，所述尿素喷射底座与尿素混合器呈90°设置。
本发明结构简单，设计精良，氨混效率高，拆装方便，后期若在特殊条件下产生尿素的结晶，处理方便，适用于国IV及国V排放标准。
附图说明
图1为本发明所述筒式SCR后处理混合装置的结构示意图。
附图标记说明：1-第一快速拆装法兰、2-气流混合器、3-尿素混合腔、4-尿素混合器、5-尿素喷射底座、6-气流均匀器、7-第二快速拆装法兰。
具体实施方式
下面结合具体附图对本发明作进一步说明。
如图1所示，本发明所述筒式SCR后处理混合装置包括尿素混合腔3，尿素混合腔3的前后端分别连接第一快速拆装法兰1和第二快速拆装法兰7，在尿素混合腔3的前后分别固定气流混合器2和气流均匀器6，在尿素混合腔3中设置尿素混合器4，在尿素混合腔3的侧壁上设置尿素喷射底座5，尿素喷射底座5与尿素混合器4呈90°设置。
本发明所述筒式SCR后处理混合装置的工作原理：将本发明所述筒式SCR后处理混合装置采用抱箍将第一快速拆装法兰1和第二快速拆装法兰7连接，必须保证SCR后处理混合装置在SCR催化剂载体前端。本发明结构简单，设计精良，氨混效率高，拆装方便，后期若在特殊条件下产生尿素的结晶，处理方便，适用于国IV及国V排放标准。

Claims (2)

1.一种筒式SCR后处理混合装置，其特征是：包括尿素混合腔（3），尿素混合腔（3）的前后端分别连接第一快速拆装法兰（1）和第二快速拆装法兰（7），在尿素混合腔（3）的前后分别固定气流混合器（2）和气流均匀器（6），在尿素混合腔（3）中设置尿素混合器（4），在尿素混合腔（3）的侧壁上设置尿素喷射底座（5）。
2.如权利要求1所述的筒式SCR后处理混合装置，其特征是：所述尿素喷射底座（5）与尿素混合器（4）呈90°设置。
CN201711410589.2A 2017-12-23 2017-12-23 筒式scr后处理混合装置 Pending CN108167050A (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101128653A (zh) * 2005-02-28 2008-02-20 卡特彼勒公司 排气混合系统
US20090019843A1 (en) * 2007-07-17 2009-01-22 Ford Global Technologies, Llc Approach for Delivering a Liquid Reductant into an Exhaust Flow of a Fuel Burning Engine
CN105464763A (zh) * 2015-11-19 2016-04-06 浙江大学 一种用于中小型船舶scr系统的尿素强效混合装置
CN205135770U (zh) * 2015-11-05 2016-04-06 东风康明斯发动机有限公司 一种柴油机尾气处理组合式排气装置
DE102015103425B3 (de) * 2015-03-09 2016-05-19 Tenneco Gmbh Mischvorrichtung
CN106285863A (zh) * 2016-10-18 2017-01-04 南京依柯卡特排放技术股份有限公司 一种柴油车尿素双螺旋双涡旋scr混合器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101128653A (zh) * 2005-02-28 2008-02-20 卡特彼勒公司 排气混合系统
US20090019843A1 (en) * 2007-07-17 2009-01-22 Ford Global Technologies, Llc Approach for Delivering a Liquid Reductant into an Exhaust Flow of a Fuel Burning Engine
DE102015103425B3 (de) * 2015-03-09 2016-05-19 Tenneco Gmbh Mischvorrichtung
CN205135770U (zh) * 2015-11-05 2016-04-06 东风康明斯发动机有限公司 一种柴油机尾气处理组合式排气装置
CN105464763A (zh) * 2015-11-19 2016-04-06 浙江大学 一种用于中小型船舶scr系统的尿素强效混合装置
CN106285863A (zh) * 2016-10-18 2017-01-04 南京依柯卡特排放技术股份有限公司 一种柴油车尿素双螺旋双涡旋scr混合器

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Application publication date: 20180615

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