Investigation on an innovative sorption system to reduce nitrogen oxides of diesel engine by using carbon nanoparticle

•An innovative sorption system is proposed to reduce nitrogen oxides emission.•Nanoparticle of carbon coated aluminum plays dual roles in the beginning and end of this system.•The lowest annual required mass of composite sorbent is one quarter of that of urea solution.•Cost of sorption SCR system by...

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Bibliographic Details
Published in:Applied thermal engineering 2018-04, Vol.134, p.29-38
Main Authors: Jiang, L., Xie, X.L., Wang, L.W., Wang, R.Z., Wang, Y.D., Roskilly, A.P.
Format: Article
Language:English
Subjects:
Aluminum
Ammonia
Carbon
Carbon coated aluminum
Catalysis
Catalysts
Chemical reduction
Composite sorbent
Diesel engines
Emission analysis
Emissions control
Fuel consumption
Nanoparticles
Nitrogen dioxide
Nitrogen oxides
Nuclear fuels
Selective catalytic reduction
Sorbents
Sorption
Ureas
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Summary:•An innovative sorption system is proposed to reduce nitrogen oxides emission.•Nanoparticle of carbon coated aluminum plays dual roles in the beginning and end of this system.•The lowest annual required mass of composite sorbent is one quarter of that of urea solution.•Cost of sorption SCR system by using carbon coated aluminum is much lower than that of adblue. A novel sorption system is proposed to reduce nitrogen oxides (NOx) emission, which is regarded as an alternative solution to conventional urea selective catalytic reduction (SCR) technology. Nanoparticle, i.e. carbon coated aluminum (Al@C) plays dual roles at the beginning and end of this system. One is used to prepare novel fuel blend, which is expected to reduce NOx emission due to low fuel consumption. The other is selected for developing composite sorbent for ammonia storage reactor. NOx emission of a diesel engine is tested in terms of various fuel blends. Based on these testing results, working performance of novel sorption SCR system is evaluated. It is indicated that the lowest annual required mass of composite SrCl2 with Al@C is about 98 kg, which is one quarter of urea solution. Comparably, the highest annual required volume of urea solution is 25.6% higher than that of composite SrCl2 with Al@C. Annual required mass ranges from 98 kg to 475 kg whereas annual required volume is in the range from 243 L to 446 L. Feasibility of novel sorption SCR system is further verified, which reveals vast potentials for reducing NOx emission in terms of conversion efficiency and cost.
ISSN:1359-4311
1873-5606
DOI:10.1016/j.applthermaleng.2018.01.116