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    • Study on Physical and Chemical Characteristics of Heavy Fuel Oil Particulate Matter Emissions of A Large Power Low-Speed Marine Engine
    DOI：10.13949/j.cnki.nrjgc.2023.05.012
    Key Words:large ship  low-speed diesel engine  particulate  heavy fuel oil（HFO）  microscopic morphology  elemental composition
    Author NameAffiliationE-mail
    WU Gang* College of Merchant Marine， Shanghai Maritime University， Shanghai 201306， China wugang@shmtu.edu.cn 
    LI Jiaoxiu* College of Merchant Marine， Shanghai Maritime University， Shanghai 201306， China lijiaoxiu1688@163.com 
    MA Qianli College of Merchant Marine， Shanghai Maritime University， Shanghai 201306， China 1291649004@qq.com 
    CHEN Xiaodong Polar Research Center of China， Shanghai 201209， China chenxiaodong@pric.org.cn 
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    Abstract:In order to clarify the physicochemical characteristics of the particulate matter emissions of heavy fuel oil（HFO） of a large power low-speed engine， the microscopic morphology， surface functional groups and surface elements of HFO particles were analyzed by scanning electron microscopy（SEM）， Fourier transforms infrared spectroscopy（FTIR） and energy dispersive X-ray spectroscopy（EDS）， and were compared with the diesel particulate matter characteristics of high-speed engines in vehicles. The results showed that the HFO particles of the large-power low-speed marine engine were in the agglomerated state with individual large spherical particles of about 3 μm diameter， which were found to be different from those of automotive diesel particles. In addition to a large number of C and O elements adsorbed on the surface of HFO particles， a certain amount of Si， Ca， Cu， Al， Na， Zn， Ba， Cl， K， S and other elements were also found. These elements are related to the fuel itself and the cylinder lubrication， so the heavy fuel oil particles have higher toxicity. No obvious C=O in the spectral range of 1 750 cm-1~1 630 cm-1 was found in the HFO particles.
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