Research Progress on Ship Exhaust Emission Characteristics and After-treatment Technologies

Kaixing Li; Zhijie Li; Shuai Ma; Qiang Ma

doi:10.6911/

Authors

Kaixing Li
Zhijie Li
Shuai Ma
Qiang Ma

DOI:

https://doi.org/10.6911/

Keywords:

Ship emission; IMO regulations; exhaust after-treatment; SCR; EGR; emission control.

Abstract

Ship emissions are important anthropogenic pollution sources that affect air quality in port cities and global climate change, mainly including air pollutants such as sulfur oxides, nitrogen oxides and particulate matter, as well as greenhouse gases such as carbon dioxide. The International Maritime Organization (IMO) has established a global emission control system centered on SOₓ and NOₓ limits, promoting the rapid development of ship exhaust after-treatment technologies. This paper systematically analyzes the environmental impacts of main ship pollutants, sorts out IMO emission regulations, focuses on the principles, application effects and economy of mainstream after-treatment technologies such as SCR, EGR and DPF, prospects the technology integration trends and existing challenges, so as to provide a reference for the formulation of ship emission reduction strategies.

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