Journal of Dalian Maritime University >
2016 , Vol. 42 >Issue 2: 68 - 74
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2016.02.012
Simulation on ammonia storage characteristics of SCR catalyst for marine diesel engine based on AVL BOOST
Received date: 2015-06-25
Revised date: 2015-09-08
Online published: 2015-09-09
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.
GAO Zi-peng , WU Gui-tao , LI Chao . Simulation on ammonia storage characteristics of SCR catalyst for marine diesel engine based on AVL BOOST[J]. Journal of Dalian Maritime University, 2016 , 42(2) : 68 -74 . DOI: 10.16411/j.cnki.issn1006-7736.2016.02.012
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