WO2014190815A1 - 一种孔道交错型高性能金属蜂窝载体 - Google Patents

一种孔道交错型高性能金属蜂窝载体 Download PDF

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Publication number
WO2014190815A1
WO2014190815A1 PCT/CN2014/075271 CN2014075271W WO2014190815A1 WO 2014190815 A1 WO2014190815 A1 WO 2014190815A1 CN 2014075271 W CN2014075271 W CN 2014075271W WO 2014190815 A1 WO2014190815 A1 WO 2014190815A1
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WO
WIPO (PCT)
Prior art keywords
metal honeycomb
honeycomb substrate
channel
staggered
corrugated
Prior art date
Application number
PCT/CN2014/075271
Other languages
English (en)
French (fr)
Inventor
黄小春
Original Assignee
Huang Xiaochun
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 Huang Xiaochun filed Critical Huang Xiaochun
Publication of WO2014190815A1 publication Critical patent/WO2014190815A1/zh

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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
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B01J37/0225—Coating of metal substrates
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • F01N2330/04—Methods of manufacturing

Definitions

  • the present invention relates generally to a catalytic converter metal carrier, and more particularly to a channel staggered high performance metal honeycomb carrier fabricated using only corrugated coils.
  • the catalytic converter is an engine exhaust gas purifying apparatus, the engine exhaust can purify carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NO x).
  • the exterior of the catalytic converter is a stainless steel housing with a metal honeycomb core inside.
  • the inner core shape of the metal honeycomb carrier in the prior art mainly has two concentric circles and an S shape, and the inner core structure is rolled by a plurality of flat plates + corrugated plates, and the inner core holes are not connected to each other, and the engine exhaust gas is When passing through the inner core of the metal honeycomb, the airflow spreads from the center to the periphery, and the flow rate decreases from the center to the outside.
  • the channel structure that is not connected to each other causes the catalyst in the middle core to be easily aged, and the catalyst utilization around the inner core is insufficient, and after the endurance Catalyst activity is significantly reduced, and it also causes waste of precious metal resources.
  • the object of the present invention is to provide a channel-interleaved high-performance metal honeycomb carrier, which can effectively improve the technical defects of the conventional flat plate + corrugated metal honeycomb carrier air distribution unevenness.
  • the present invention uses at least one corrugated plate roll having an inclination angle of 2 or more to form a concentric circular or S-shaped honeycomb core, and the outer ring is fixed by a metal casing. Brazing constitutes the whole as a metal honeycomb carrier.
  • the inner core of the metal honeycomb carrier is only rolled by a corrugated plate, the peaks and peaks are in point contact and connected by brazing, and the inner core channels are staggered to communicate as a metal honeycomb carrier for catalyst coating.
  • the utility model has the beneficial effects of: reducing the cost of the carrier and the catalyst, and improving the conversion efficiency and utilization rate of the catalyst.
  • the high-performance metal honeycomb carrier provided by the utility model solves the problems of uneven distribution of airflow in the inner core of the conventional flat plate + corrugated plate metal honeycomb carrier and insufficient utilization of the catalyst.
  • the housing cross section includes a circular shape, an elliptical shape, a square shape, and a racetrack shape.
  • the structural design is ingenious, the flat plate is eliminated, and only the corrugated board is used to make the inner core, and the inner core foil strip material consumption is more than 35%.
  • the metal honeycomb carrier provided by the utility model has the inner core channels staggered, the gas resistance is lower, the gas flow distribution is more uniform, and the utilization rate of the catalyst is improved.
  • the metal honeycomb carrier with the inner core volume can reduce the coating amount of the catalyst precious metal while meeting the engine emission requirements.
  • FIG. 1 is a schematic view showing a concentric circular structure of a channel-interleaved high-performance metal honeycomb carrier according to the present invention.
  • FIG. 3 are schematic diagrams of a staggered high performance metal honeycomb carrier corrugated board according to the present invention.
  • FIG. 4 is a schematic view of a S-shaped structure of a high-performance metal honeycomb carrier with a stairway staggered according to the present invention.
  • a staggered high-performance metal honeycomb carrier made only of corrugated coils includes using at least one corrugated sheet 1 having an inclination angle of 2 or more, and the angles are alternately wound into concentric circles or
  • the S-shaped honeycomb core is fixed to the outer ring by a metal casing 2, and is integrally formed as a metal honeycomb carrier by brazing.

Landscapes

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

Abstract

提供一种孔道交错型高性能金属蜂窝载体，其特征在于仅用波形板卷制成金属蜂窝载体，突破了平板+波形板的传统结构，孔道交错相通，不再是互不相通的单一直通孔道结构，由于设计巧妙，取消了平板，仅使用波形板制成内芯，节省金属箔带材料用量超过35%。新结构的金属蜂窝载体，气阻更低、气流分布更均匀，解决了传统平板+波形板金属蜂窝载体内芯气流分布不均匀、催化剂利用率不足等问题，适用于各种用途发动机的尾气净化催化剂涂覆用金属蜂窝载体。

Description

一种孔道交错型高性能金属蜂窝载体 技术领域
[0001] 本实用新型主要涉及催化转化器金属载体， 尤其涉及一种仅使用波形板卷制成的孔 道交错型高性能金属蜂窝载体。
背景技术
[0002] 催化转化器是一种发动机尾气净化装置， 它能净化发动机排出的一氧化碳 (CO)、 碳 氢化合物 （HC)和氮氧化物 （NOx)。 催化转化器的外部为不锈钢壳体， 内部为金属蜂窝内芯。 现有技术领域金属蜂窝载体的内芯形状主要有同心圆形和 S 形两种， 其内芯结构都是由若 干平板 +波形板卷制而成， 内芯各孔道互不相通， 发动机尾气在通过金属蜂窝内芯时， 气流 由中心向四周扩散分布， 流量由中心向外递减， 互不相通的孔道结构造成内芯中间的催化剂 容易老化， 而内芯四周的催化剂利用率不足， 耐久后的催化剂活性显著下降， 同时也造成了 贵金属资源的浪费。
发明内容
[0003] 本实用新型的目的是提供了一种孔道交错型高性能金属蜂窝载体， 它能有效改善传 统的平板 +波形板金属蜂窝载体气流分布不均等技术缺陷。
[0004] 本发明是通过以下技术方案来实现的： 本发明使用至少一层倾斜角度大于等于 2° 的 波形板卷制成同心圆形或 S形蜂窝内芯， 外圈用金属外壳固定， 通过钎焊构成整体作为金属 蜂窝载体。 所述金属蜂窝载体内芯仅用波形板卷制而成， 波峰与波峰为点接触并通过钎焊连 接， 内芯孔道交错相通， 作为催化剂涂覆用金属蜂窝载体。
[0005] 与现有技术相比， 本实用新型的有益效果是： 既能降低载体和催化剂成本， 又能提 高催化剂的转化效率和利用率。 本实用新型提供的高性能金属蜂窝载体， 解决了传统平板 + 波形板金属蜂窝载体内芯气流分布不均匀、 催化剂利用率不足等问题。
[0006] 所述的壳体截面包括圆形、 椭圆形、 方形和跑道形。
[0007] 本实用新型的优点： 结构设计巧妙， 取消了平板， 仅使用波形板制成内芯， 节省内 芯箔带材料用量超过 35%。 本实用新型提供的金属蜂窝载体， 内芯孔道交错相通， 气阻更低、 气流分布更均匀， 提高了催化剂的利用率。 同内芯体积的金属蜂窝载体， 可降低催化剂贵金 属的涂覆量同时能满足发动机的排放要求。
附图说明
[0008] 图 1为本实用新型孔道交错型高性能金属蜂窝载体同心圆形结构示意图。 [0009] 图 2、 图 3为本实用新型交错型高性能金属蜂窝载体波形板示意图。
[0010] 图 4为本实用新型孔道交错型高性能金属蜂窝载体 S形结构示意图。
具体实施方式
[0011] 参见附图， 一种仅用波形板卷制成的交错型高性能金属蜂窝载体， 包括使用至少一层 倾斜角度大于等于 2° 的波形板 1， 角度交错卷制成同心圆形或 S 形蜂窝内芯， 外圈使用金 属壳体 2固定， 通过钎焊构成整体作为金属蜂窝载体。

Claims

权 利 要 求 书
1. 一种孔道交错型高性能金属蜂窝载体， 其特征在于： 使用至少一层倾斜角度大于等于 2° 的波形板， 角度交错卷制成同心圆形或 S形蜂窝内芯， 外圈使用金属壳体固定， 通过钎焊构 成整体作为金属蜂窝载体。
2. 根据权利要求 1 所述的一种孔道交错型高性能金属蜂窝载体， 其特征在于： 仅用波形板 卷制成同心圆形或 S形金属蜂窝内芯， 内芯孔道交错相通， 波形板的波峰之间为点接触， 并 通过钎焊连接。
3. 根据权利要求 1 所述的一种孔道交错型高性能金属蜂窝载体， 其特征在于： 所述载体截 面包括圆形、 椭圆形、 方形和跑道形。
PCT/CN2014/075271 2013-06-01 2014-04-14 一种孔道交错型高性能金属蜂窝载体 WO2014190815A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203321645U (zh) * 2013-06-01 2013-12-04 黄小春 一种孔道交错型高性能金属蜂窝载体
CN103628957A (zh) * 2013-06-01 2014-03-12 黄小春 一种孔道交错型高性能金属蜂窝载体
CN112196643B (zh) * 2020-09-22 2022-05-17 拓信(台州)精密工业有限公司 矩片扰流式金属蜂窝载体

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273681A (en) * 1979-01-25 1981-06-16 Suddeutsche Kuhlerfabrik Julius Fr. Behr Gmbh & Co. Kg Support matrix for a catalytic reactor for scrubbing exhaust gases in an internal combustion engine
US4362695A (en) * 1979-09-14 1982-12-07 Kernforschungsanlage Julich Gmbh Fission product filter for hot reactor coolant
US4832998A (en) * 1986-05-12 1989-05-23 Interatom Gmbh Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same
CN203321645U (zh) * 2013-06-01 2013-12-04 黄小春 一种孔道交错型高性能金属蜂窝载体
CN103628957A (zh) * 2013-06-01 2014-03-12 黄小春 一种孔道交错型高性能金属蜂窝载体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273681A (en) * 1979-01-25 1981-06-16 Suddeutsche Kuhlerfabrik Julius Fr. Behr Gmbh & Co. Kg Support matrix for a catalytic reactor for scrubbing exhaust gases in an internal combustion engine
US4362695A (en) * 1979-09-14 1982-12-07 Kernforschungsanlage Julich Gmbh Fission product filter for hot reactor coolant
US4832998A (en) * 1986-05-12 1989-05-23 Interatom Gmbh Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same
CN203321645U (zh) * 2013-06-01 2013-12-04 黄小春 一种孔道交错型高性能金属蜂窝载体
CN103628957A (zh) * 2013-06-01 2014-03-12 黄小春 一种孔道交错型高性能金属蜂窝载体

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