Particulate and Gaseous Emissions from a Large Two-Stroke Slow-Speed Marine Engine Equipped with Open-Loop Scrubber under Real Sailing Conditions

被引:1
|
作者
Grigoriadis, Achilleas [1 ]
Kousias, Nikolaos [1 ]
Raptopoulos-Chatzistefanou, Anastasios [1 ]
Salberg, Hakan [2 ]
Moldanova, Jana [2 ]
Hermansson, Anna-Lunde [3 ]
Cha, Yingying [2 ]
Kontses, Anastasios [1 ]
Toumasatos, Zisimos [1 ]
Mamarikas, Sokratis [1 ]
Ntziachristos, Leonidas [1 ]
机构
[1] Aristotle Univ Thessaloniki, Dept Mech Engn, POB 458, GR-54124 Thessaloniki, Greece
[2] IVL Swedish Environm Res Inst, S-40014 Gothenburg, Sweden
[3] Chalmers Univ Technol, Dept Mech & Maritime Sci, Horselgangen 4, S-41756 Gothenburg, Sweden
关键词
shipping emissions; on-board measurements; exhaust gas cleaning system; scrubber; PN; particle size distribution; CATALYTIC STRIPPER; PARTICLE; PERFORMANCE; POLLUTION; ABATEMENT; MATTER;
D O I
10.3390/atmos15070845
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Particulate and gaseous emissions were studied from a large two-stroke slow-speed diesel engine equipped with an open-loop scrubber, installed on a 78,200 metric tonnes (deadweight) containership, under real operation. This paper presents the on-board emission measurements conducted upstream and downstream of the scrubber with heavy fuel oil (HFO) and ultra-low sulfur fuel oil (ULSFO). Particle emissions were examined under various dilution ratios and temperature conditions, and with two thermal treatment setups, involving a thermodenuder (TD) and a catalytic stripper (CS). Our results show a 75% SO2 reduction downstream of the scrubber with the HFO to emission-compliant levels, while the use of the ULSFO further decreased SO2 levels. The operation of the scrubber produced higher particle number levels compared to engine-out, attributed to the condensational growth of nanometer particle cores, salt and the formation of sulfuric acid particles in the smaller size range, induced by the scrubber. The use of a TD and a CS eliminates volatiles but can generate new particles when used in high-sulfur conditions. The results of this study contribute to the generally limited understanding of the particulate and gaseous emission performance of open-loop scrubbers in ships and could feed into emission and air quality models for estimating marine pollution impacts.
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页数:21
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