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汽车安全与节能学报

汽车安全与节能学报 ›› 2013, Vol. 4 ›› Issue (2): 161-168.DOI: 10.3969/j.issn.1674-8484.2013.02.008

• 汽车节能与环保 • 上一篇    下一篇

硫含量对汽车尾气催化转化器耐久性的影响

郭莘，郑书佳   

  1. 中国石油化工股份有限公司（SINOPEC） 石油化工科学研究院，北京 100083，中国
  • 收稿日期:2013-03-22 出版日期:2013-06-25 发布日期:2013-06-27
  • 作者简介:郭莘（1972 年—），女（汉），山东，高级工程师。E-mail ：guoxin.ripp@sinopec.com

Influence of sulfur content on the durability of automotive catalytic converters

GUO Xin, ZHENG Shujia   

  1. Research Institute of Petroleum Processing, China Petroleum & Chemical Corporation (SINOPEC), Beijing 100083, China
  • Received:2013-03-22 Online:2013-06-25 Published:2013-06-27

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摘要： 汽车尾气催化转化器可用于控制汽车污染排放。该文考察了汽油硫含量对催化转化器耐久性能的影响。根据催化器机理，将热老化与化学老化分开进行试验。采用满足国Ⅲ和国Ⅳ、含硫质量分数量为150×10 － 6 和50×10 － 6 的两种汽油；利用发动机台架和R-FOCAS 燃烧器模拟系统，对催化转化器进行了10 万km 耐久试验，测量了催化转化器在试验前、后的起燃温度、储氧量等。结果表明：与化学老化影响相比较，热老化对催化转化器的影响更大；对于含硫质量分数150×10 － 6 分数的汽油，通过高温脱硫过程，可适当恢复硫老化对催化转化器所造成的影响。

关键词: 汽车, 尾气污染, 排放控制, 催化转化器, 耐久性, 硫含量, 热老化, 化学老化

Abstract: This paper studies the impact of the gasoline sulfur content on the durability of vehicle exhaust catalytic converters which can be used to reduce vehicle emission. Thermal aging test and chemical aging test were made separately based on the mechanism of catalytic converters. Engine bench tests were made with an R-FOCUS burner simulation system to evaluate converter durability for 1×105 km using two kinds of fuels with one with sulfur content of 150 μg/g and the other with sulfur content of 50 µg /g, which meet China standards Ⅲ and Ⅳ. The ignition temperatures and oxygen storage capacities of the catalytic converters were measured before and after each test. The results show that the thermal aging has greater impact on the catalytic converters compared with the chemical aging and that high temperature desulfurization process can properly recover the catalytic converter poisoned by sulfur for fuel with sulfur content of 150×10-6.

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