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催化剂几何形状对高压下扩散及选择性催化还原动力学的影响

Impact of Catalyst Geometry on Diffusion and Selective Catalytic Reduction Kinetics under Elevated Pressures.

作者信息

Peitz Daniel, Elsener Martin, Kröcher Oliver

机构信息

Winterthur Gas & Diesel Schützenstraße 1-3 8400 Winterthur Switzerland.

Hug Engineering Im Geren 14 8352 Elsau Switzerland.

出版信息

Chem Ing Tech. 2018 Jun;90(6):795-802. doi: 10.1002/cite.201700146. Epub 2018 Apr 26.

DOI:10.1002/cite.201700146
PMID:31543520
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6743712/
Abstract

In marine diesel engine applications, selective catalytic reduction (SCR) upstream of the turbocharger may become the preferred technology when dealing with high sulfur fuels and low exhaust gas temperatures. The target nitrogen oxide reductions in combination with minimum ammonia slip and reduced gas diffusion rates under elevated pressures require understanding of the impact of catalyst geometry on the SCR kinetics. The extent, trends, and sources for this observation are elucidated in this work by systematic testing of catalysts with equal geometry and/or intrinsic activity.

摘要

在船用柴油发动机应用中，当处理高硫燃料和低废气温度时，涡轮增压器上游的选择性催化还原（SCR）可能会成为首选技术。在高压下，要实现目标氮氧化物还原，同时将氨泄漏降至最低并降低气体扩散速率，就需要了解催化剂几何形状对SCR动力学的影响。通过对具有相同几何形状和/或本征活性的催化剂进行系统测试，本研究阐明了这一观察结果的程度、趋势和来源。

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本文引用的文献

1
Impacts and mitigation of excess diesel-related NO emissions in 11 major vehicle markets.11 个主要汽车市场中过量柴油相关氮氧化物排放的影响和缓解措施。
Nature. 2017 May 25;545(7655):467-471. doi: 10.1038/nature22086. Epub 2017 May 15.
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Estimation of exhaust emission from ocean-going vessels in Hong Kong.香港远洋船舶废气排放量的估算。
Sci Total Environ. 2012 Aug 1;431:299-306. doi: 10.1016/j.scitotenv.2012.03.092. Epub 2012 Jun 13.
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Laboratory test reactor for the investigation of liquid reducing agents in the selective catalytic reduction of NOx.
用于研究在选择性催化还原氮氧化物中液体还原剂的实验室试验反应器。
Rev Sci Instrum. 2011 Aug;82(8):084101. doi: 10.1063/1.3617463.
4
Issuance of experimental use permits; genetically engineered microbial pesticides; Advanced Genetic Sciences, Inc.; notice.实验性使用许可的发放；基因工程微生物农药；先进遗传科学公司；通知
Fed Regist. 1985 Dec 4;50(233):49760-2.