CN110966073A - 一种符合国六标准的天然气后处理器总成 - Google Patents

一种符合国六标准的天然气后处理器总成 Download PDF

Info

Publication number
CN110966073A
CN110966073A CN201911316376.2A CN201911316376A CN110966073A CN 110966073 A CN110966073 A CN 110966073A CN 201911316376 A CN201911316376 A CN 201911316376A CN 110966073 A CN110966073 A CN 110966073A
Authority
CN
China
Prior art keywords
carrier
assembly
packaging unit
natural gas
packaging
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
CN201911316376.2A
Other languages
English (en)
Inventor
姜鸿澎
胡亮
何源
窦丽
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.)
Sinotruk Jinan Power Co Ltd
Original Assignee
Sinotruk Jinan Power 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.)
Filing date
Publication date
Application filed by Sinotruk Jinan Power Co Ltd filed Critical Sinotruk Jinan Power Co Ltd
Priority to CN201911316376.2A priority Critical patent/CN110966073A/zh
Publication of CN110966073A publication Critical patent/CN110966073A/zh
Pending legal-status Critical Current

Links

Images

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
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
    • 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
    • F01N13/0093—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 of the same type
    • 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
    • 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
    • F01N13/14—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 thermal insulation
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N3/08—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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated

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)
  • Exhaust Gas After Treatment (AREA)

Abstract

本发明要解决的问题是提供一种符合国六标准的天然气后处理器总成，有效降低尾气中污染物的排放，满足国六标准。其主要包括封装单元，内部设有封装空腔，所述封装空腔的前端设有前载体、后端设有后载体，所述前载体和后载体均为蜂窝状载体，所述前载体的孔内涂覆有Pt、Pd、Rh贵金属涂层，所述后载体的孔内涂覆有Pt贵金属涂层；进气管总成，连通所述封装单元的前端；出气管总成，连通所述封装单元的后端。

Description

一种符合国六标准的天然气后处理器总成
技术领域
本发明涉及天然气排气系统领域，具体涉及一种符合国六标准的天然气后处理器总成。
背景技术
随着机动车保有量的快速增长，我国大中城市的空气污染逐渐转变为煤烟和机动车排放为主的复合型污染，NOx成为很多城市最为突出的大气污染问题。机动车排放是城市大气中NOx的主要来源之一。而在机动车排放的NOx中，重型商用车的贡献日益突出，占60%以上。尽管重型商用车的保有量不高，但其单车排放很高，减少重型商用车的排放已成为机动车减排的重中之重。为了控制重型商用车的污染排放，我国已于2018年6月颁布GB 17691《重型柴油车污染物排放限值及测量方法（中国第六阶段）》，其中天然气车于2019年7月1日实施国六a排放标准。为使天然气车达到国六排放标准，需设计出满足环保法规要求的后处理器总成。
现有天然气后处理器总成主要存在以下几个方面问题：
一是后处理器总成不能满足国六排放标准要求；
二是后处理器总成内部结构设计不合理，载体入口气流分布不均匀，导致部分载体利用率低，影响NOx转化效率；
三是后处理器总成内部温度损失大，达不到污染物要求的反应温度（500℃），转化效率低，导致污染物超过排放限值。
发明内容
本发明要解决的问题是提供一种符合国六标准的天然气后处理器总成，有效降低尾气中污染物的排放，满足国六标准。
本发明是通过以下技术方案实现的：
一种符合国六标准的天然气后处理器总成，包括有，
封装单元，内部设有封装空腔，所述封装空腔的前端设有前载体、后端设有后载体，所述前载体和后载体均为蜂窝状载体，所述前载体的孔内涂覆有Pt、Pd、Rh贵金属涂层，所述后载体的孔内涂覆有Pt贵金属涂层；
进气管总成，连通所述封装单元的前端；
出气管总成，连通所述封装单元的后端。
进一步的，所述前载体内的Pt、Pd、Rh含量比例为(2.5～3.5):(6～7):1。
进一步的，所述进气管总成靠近封装单元的一段管道截面变小，所述进气管总成与封装单元的连接处为圆弧面过度。
进一步的，所述出气管总成的首端设有延伸至封装空腔内的穿孔管，所述穿孔管的管壁上设有若干个穿孔。
进一步的，所述封装单元、进气管总成、出气管总成的外壁上均设有保温壳，所述保温壳的外层为不锈钢壳体，内层为玻璃纤维保温棉。
进一步的，所述前载体为三元催化转化器，所述后载体为氨过滤器，所述前载体和后载体的孔目数为400目，Pt、Pd、Rh贵金属涂层厚度为35～45μm；封装单元的壳体由SUS441不锈钢板卷制、焊接、整形而成。
本发明与现有技术相比所取得的有益效果如下：
1、前载体涂覆Pt、Pd、Rh贵金属涂层，后载体涂覆Pt贵金属涂层，前载体将尾气中的CO、HC、NOx等有害气体通过氧化和还原作用分别转变为无害的CO2、N2、H2O，后载体将尾气中的NH3通过氧化反应转变为无害的N2，从而有效降低尾气中污染物的排放，满足国六排放法规要求；
2、所述进气管总成靠近封装单元的一段管道截面变小，所述进气管总成与封装单元的连接处为圆弧面过度，保证尾气在前载体入口面气流分布均匀，满足国六后处理器设计要求；
3、保温壳的外层为不锈钢壳体，内层为玻璃纤维保温棉，既能减小内部温度损失又能保证后处理器外侧强度；后处理器结构简单，便于加工生产，同时采用不锈钢板制作，可有效解决后处理器腐蚀问题，且无需表面处理。
附图说明
图1为本发明所述天然气后处理器总成结构示意图；
图2为本发明所述天然气后处理器总成外部结构示意图；
图3为本发明所述封装单元内部结构示意图；
1、封装单元，2、进气管总成，3、出气管总成，4、前载体，5、后载体，6、载体衬垫，7、穿孔管，8、保温壳，9、固定板。
具体实施方式
下面结合附图对本发明进一步详细的说明。所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本发明的描述中，需要理解的是，术语“前”、“后”、“左”、“右”、“首”、“尾”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
如图1-3所示，本发明提供一种符合国六标准的天然气后处理器总成，其主要包括封装单元1、进气管总成2和出气管总成3三大部分。封装单元1的壳体由SUS441不锈钢板卷制、焊接、整形而成，其内部形成直径为320.5mm的封装空腔，封装空腔的前端通过载体衬垫6安装有前载体4、后端安装有后载体5，所述前载体4和后载体5均为蜂窝状载体，所述前载体4的孔内涂覆有40μm厚的Pt、Pd、Rh贵金属涂层，Pt、Pd、Rh含量比例为3:6:1，所述后载体5的孔内涂覆有40μm厚的Pt贵金属涂层。本实施例中，前载体4为三元催化转化器，所述后载体5为氨过滤器，载体的孔目数为400目，每平方英寸有400个正方形的孔，孔边长为1.16mm。载体衬垫6的材质为多晶纤维，能够给前、后两载体提供足够的保持力。
封装单元1和前载体4、后载体5可以采用GBD自动化生产线封装，封装时，GBD自动化生产线测量前载体4和后载体5的外径以及载体衬垫6质量后，根据提前输入的GBD值计算出封装间隙，再将包裹载体衬垫6后的涂覆后的载体压装到封装单元1的壳体内，最后根据计算出的封装间隙对封装单元1的壳体进行缩径。如此，封装单元1封装完成，以上工序全部为自动化生产，保证封装单元1的机械性能及一致性，这是现有技术，在此不详细说明。
进气管总成2连通所述封装单元1的前端，进气管总成2靠近封装单元1的一段管道截面变小，其内径为117mm，所述进气管总成2与封装单元1的连接处为圆弧面过度，从而减小零部件结构对气流产生的阻力，减少涡流、湍流的产生，有利于气流的分布均匀。出气管总成3连通所述封装单元1的后端。出气管总成3的首端设有延伸至封装空腔内的穿孔管7，所述穿孔管7的管壁上设有若干个穿孔，一是用来排出后处理器内部产生的冷凝水，二是降低后处理器低频噪声。为了保温隔热效果，封装单元1、进气管总成2、出气管总成3的外壁上均设有保温壳8，所述保温壳8的外层为不锈钢壳体，内层为玻璃纤维保温棉，既能减小内部温度损失又能保证后处理器外侧强度。封装单元1和出气管总成3的外壁之间通过固定板进行连接，这样避免出气管总成3处于悬臂状态。
本发明具体工作原理如下：
尾气通过进气管总成2依次经过前载体4和后载体5的蜂窝孔，经过前载体4时，在Pt、Pd、Rh催化作用下，将尾气中的CO、HC、NOx等有害气体通过氧化和还原作用分别转变为无害的CO2、N2、H2O。具体反应式如下：
Figure DEST_PATH_IMAGE001
经过后载体5时，在Pt催化作用下，将尾气中的NH3通过氧化反应转变为无害的N2。具体反应式如下：
4NH3+3O2→2N2+6H2O。
从而经过前载体4和后载体5，从而有效降低尾气中污染物的排放，满足国六排放法规要求。

Claims (6)

1.一种符合国六标准的天然气后处理器总成，其特征在于，包括有，
封装单元，内部设有封装空腔，所述封装空腔的前端设有前载体、后端设有后载体，所述前载体和后载体均为蜂窝状载体，所述前载体的孔内涂覆有Pt、Pd、Rh贵金属涂层，所述后载体的孔内涂覆有Pt贵金属涂层；
进气管总成，连通所述封装单元的前端；
出气管总成，连通所述封装单元的后端。
2.根据权利要求1所述的天然气后处理器总成，其特征在于，所述前载体内的Pt、Pd、Rh含量比例为(2.5～3.5):(6～7):1。
3.根据权利要求1所述的天然气后处理器总成，其特征在于，所述进气管总成靠近封装单元的一段管道截面变小，所述进气管总成与封装单元的连接处为圆弧面过度。
4.根据权利要求1所述的天然气后处理器总成，其特征在于，所述出气管总成的首端设有延伸至封装空腔内的穿孔管，所述穿孔管的管壁上设有若干个穿孔。
5.根据权利要求1所述的天然气后处理器总成，其特征在于，所述封装单元、进气管总成、出气管总成的外壁上均设有保温壳，所述保温壳的外层为不锈钢壳体，内层为玻璃纤维保温棉。
6.根据权利要求1-5任一项所述的天然气后处理器总成，其特征在于，所述前载体为三元催化转化器，所述后载体为氨过滤器，所述前载体和后载体的孔目数为400目，Pt、Pd、Rh贵金属涂层厚度为35～45μm；封装单元的壳体由SUS441不锈钢板卷制、焊接、整形而成。
CN201911316376.2A 2019-12-19 2019-12-19 一种符合国六标准的天然气后处理器总成 Pending CN110966073A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911316376.2A CN110966073A (zh) 2019-12-19 2019-12-19 一种符合国六标准的天然气后处理器总成

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911316376.2A CN110966073A (zh) 2019-12-19 2019-12-19 一种符合国六标准的天然气后处理器总成

Publications (1)

Publication Number Publication Date
CN110966073A true CN110966073A (zh) 2020-04-07

Family

ID=70035128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911316376.2A Pending CN110966073A (zh) 2019-12-19 2019-12-19 一种符合国六标准的天然气后处理器总成

Country Status (1)

Country Link
CN (1) CN110966073A (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1743052A (zh) * 2004-08-04 2006-03-08 通用电气公司 处理含氨废气的方法
CN102083531A (zh) * 2008-07-25 2011-06-01 恩亿凯嘉股份有限公司 净化废气的催化剂装置和净化废气的方法
CN209011918U (zh) * 2018-10-12 2019-06-21 天纳克一汽富晟(长春)汽车零部件有限公司 尾气后处理封装

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1743052A (zh) * 2004-08-04 2006-03-08 通用电气公司 处理含氨废气的方法
CN102083531A (zh) * 2008-07-25 2011-06-01 恩亿凯嘉股份有限公司 净化废气的催化剂装置和净化废气的方法
CN209011918U (zh) * 2018-10-12 2019-06-21 天纳克一汽富晟(长春)汽车零部件有限公司 尾气后处理封装

Similar Documents

Publication Publication Date Title
CN107701264B (zh) 一种用于改善声品质的集成式排气净化消声器
CN205370687U (zh) 一种scr消声器总成
CN110966073A (zh) 一种符合国六标准的天然气后处理器总成
CN202266317U (zh) 泡沫金属球管组合的混合单元
CN107035463B (zh) 一种可以利用余热进行催化反应的车用消音器
CN211500764U (zh) 一种汽车发动机的金属泡沫催化净化消声器
CN211851961U (zh) 一种多级净化的汽车尾气净化管
CN111156068B (zh) 发动机后处理系统及车辆
CN202417657U (zh) 柴油汽车尾气的净化装置
CN209838505U (zh) 一种用于混合还原剂流体的径向喷射紧藕型混合装置
CN203614188U (zh) 一种机动车用scr消声器的结构总成
CN207538902U (zh) 一种新型汽车三元催化器
CN203130210U (zh) 柴油机用选择性催化消声器
CN112031900A (zh) 一种尿素混合器
CN111255550A (zh) 一种柴油国六后处理器总成
CN208587214U (zh) 一种三元催化器载体结构
CN214499222U (zh) 一种用于车辆的排气尾管及车辆
CN215256417U (zh) 叉车排气系统
CN205605280U (zh) 一种中空金属蜂窝式氧化催化器
CN212154916U (zh) 一种摩托车排气管结构
CN202284489U (zh) 柴油发电机组的减排装置
CN204921108U (zh) 一种汽车尾气的催化转化装置
CN217129629U (zh) 一种汽车排气净化消声装置
CN220955768U (zh) 一种doc混合器
CN216172386U (zh) Scr-lnt催化剂及降低氮氧化物排放的后处理系统

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20200407

RJ01 Rejection of invention patent application after publication