天然气汽车三效催化器流场均匀性数值模拟及催化剂优化

张力; 闫云飞; 冉景煜; 修恒旭

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天然气汽车三效催化器流场均匀性数值模拟及催化剂优化

催化、动力学与反应器 | 更新时间：2025-12-10

- 天然气汽车三效催化器流场均匀性数值模拟及催化剂优化
- Numerical simulation of flow distribution uniformity in TWC and optimal design of catalyst in CNG vehicle
- 化工学报 2005年第9期页码：1679-1684
- 作者机构：
  
  重庆大学能源与环境研究所,重庆,400044
- 作者简介：
- 基金信息：
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- 网络首发：2005-09-25，
  
  纸质出版：2005-09-25
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张力, 闫云飞, 冉景煜, 等. 天然气汽车三效催化器流场均匀性数值模拟及催化剂优化[J]. 化工学报, 2005,(9):1679-1684.

ZHANG Li, YAN Yunfei, RAN Jingyu, et al. Numerical simulation of flow distribution uniformity in TWC and optimal design of catalyst in CNG vehicle[J]. CIESC Journal, 2005, (9): 1679-1684.
张力, 闫云飞, 冉景煜, 等. 天然气汽车三效催化器流场均匀性数值模拟及催化剂优化[J]. 化工学报, 2005,(9):1679-1684. DOI：

ZHANG Li, YAN Yunfei, RAN Jingyu, et al. Numerical simulation of flow distribution uniformity in TWC and optimal design of catalyst in CNG vehicle[J]. CIESC Journal, 2005, (9): 1679-1684. DOI：

摘要

设计了一种组合式导流装置，并数值模拟了其对三效催化器内流场均匀性的影响.优化设计了一种适合天然气汽车尾气净化的催化剂，提出了催化剂的制备、配方及加工工艺.研究表明，加装导流装置能有效改善三效催化器内流场的均匀性.在设计的均流装置、催化剂配比及催化剂加工工艺下，催化器内流场均匀性提高了5%以上，使用寿命也较大提高.天然气汽车三效催化器中贵金属用量大大降低，保持了较高的废气净化效率.

Abstract

A new structure of three-way catalysts(TWC) with combined flow guide device was presented and the simulated results of its influence on the flow distribution uniformity were given.A new kind of catalyst adapted to compressed natural gas(CNG) vehicle was developed.The preparation

composition and processing technology of the catalyst were put introduced.The investigation showed that due to the improvement of the combined flow guide device

the catalyst composition and the processing technology

the uniformity of flow distribution in TWC could be improved by more than 5% and the life-span of TWC could be prolonged.The dosage of noble metals in TWC of CNG vehicle was greatly decreased

and higher purification efficiency for the exhaust was obtained.

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