基于AVL BOOST的船舶柴油机SCR催化剂储氨特性仿真

高子朋; 吴桂涛; 李  超

doi:10.16411/j.cnki.issn1006-7736.2016.02.012

大连海事大学学报 >

2016 , Vol. 42 >Issue 2: 68 - 74

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2016.02.012

船舶与海洋工程

基于AVL BOOST的船舶柴油机SCR催化剂储氨特性仿真

高子朋 ,
吴桂涛 ,
李超

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（1.日本船级社（中国）有限公司舟山分公司，浙江舟山 316000；2.大连海事大学轮机工程学院，辽宁大连 116026）

高子朋（1990—），男，硕士生.

收稿日期: 2015-06-25

修回日期: 2015-09-08

网络出版日期: 2015-09-09

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Simulation on ammonia storage characteristics of SCR catalyst for marine diesel engine based on AVL BOOST

GAO Zi-peng ,
WU Gui-tao ,
LI Chao

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（1.Zhoushan Branch, Nippon Kaiji Kyokai（China）Co., Ltd, Zhoushan 316000, China; 2.Marine Engineering College, Dalian Maritime University, Dalian 116026, China）

Received date: 2015-06-25

Revised date: 2015-09-08

Online published: 2015-09-09

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摘要

为研究SCR催化剂的储氨特性，基于AVL BOOST软件建立某型船舶柴油机SCR催化剂模型，仿真研究不同温度和空速下的SCR催化剂储氨动态过程与储氨量，以及储氨量对转化效率的影响.结果表明：相同空速下，温度增大后催化剂储氨能力显著降低，氨存储时间以及饱和储氨量随温度升高呈线性减小的趋势；相同温度下，空速增大后加快了NH3泄漏，从而使氨存储时间和饱和储氨量有不同程度的降低.低温时（280℃以下），空速对饱和储氨量的影响较大，随着空速增大，饱和储氨量逐渐减小；较高温度时（280℃以上），空速对饱和储氨量的影响非常小.低温时，转化效率随储氨量增大而提高，随着温度的升高，储氨量对转化效率的影响逐渐减小.

关键词： 船舶柴油机; 选择性催化还原（SCR）; 储氨特性; 动态过程; 转化效率

本文引用格式

高子朋 , 吴桂涛 , 李超 . 基于AVL BOOST的船舶柴油机SCR催化剂储氨特性仿真[J]. 大连海事大学学报, 2016 , 42(2) : 68 -74 . DOI: 10.16411/j.cnki.issn1006-7736.2016.02.012

Abstract

To study the ammonia storage characteristics of SCR catalyst, SCR catalyst model for marine diesel engine was established based on AVL BOOST to study SCR catalyst ammonia storage dynamic process, ammonia storage amount and its effect on conversion efficiency in different temperatures and space velocities. Simulation results show that under the same space velocity, the ammonia storage capacity of the catalyst decreases with the increase of temperature, which results in the decreasing of the ammonia storage time and ammonia storage amount. Under the same catalyst temperature, the increase of space velocity causes earlier appearance of ammonia slip, as consequence, the ammonia storage time and ammonia storage amount decrease. The effect of space velocity on the ammonia storage amount tends to be obvious with the lower the catalyst temperature(under 280℃), but under higher temperature(up 280℃), the effect of space velocity on ammonia storage amount tends to be less. At low temperature, the conversion efficiency increases as the ammonia storage amount rising, and the effect of ammonia storage amount on the conversion efficiency decreases with temperature increasing.

Key words： marine diesel engine; selective catalytic reduction(SCR); ammonia storage characteristics; dynamic process; conversion efficiency

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