Abstract
The NOx emissions from diesel engines and industrial boilers are a major cause of environmental pollution. The selective catalytic reduction of urea is an aftertreatment technology that is widely used for the reduction of NOx emissions. The objective of this study was to investigate the characteristics of the thermal decomposition of a urea aqueous solution using laboratory-scale experimental equipment under conditions similar to those of marine diesel engines. A 40 wt. urea aqueous solution was used in this study. It was found that the total conversion rate varied with the inflow gas conditions and flow rates of the urea aqueous solution. In addition, there were conversion rate differences between NH3 and HNCO. At inflow gas temperature conditions of 210°C and 250°C, the NH3 conversion rate was found to be higher than that of the HNCO, depending on the residence time.
| Original language | English |
|---|---|
| Pages (from-to) | 177-182 |
| Number of pages | 6 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, B |
| Volume | 39 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2015 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 12 Responsible Consumption and Production -
SDG 14 Life Below Water
Keywords
- Conversion rate
- HNCO
- NH
- Thermal Decomposition
- Urea Aqueous Solution
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