臭氧脱硫脱硝技术在远洋船舶上的应用研究

Application Research of Ozone Desulfurization and Denitrification Technology in Ocean Shipping

近年来,臭氧脱硫脱硝技术的发展情况一直受到船舶行业的重点关注。本文从臭氧脱硫脱硝技术的原理出发,结合远洋船舶的实际情况分析该技术在远洋船舶上应用的优势和挑战,并在安全防护方面提出建议。分析结果表明:相比SCR+EGC的技术方案,臭氧脱硫脱硝技术拥有一体化脱硫脱硝、设备布置更灵活、对柴油机运行数据依赖程度低等优势。但同时存在电力消耗大,臭氧产量低和洗涤水排放风险等问题。经计算,臭氧脱硫脱硝系统功率约占配套柴油机功率的6.97%~15.58%。单台臭氧发生器可适配的柴油机最大功率在8.49~16.4MW,且受设备体积限制,多台设备并联布置困难。洗涤废水硝酸盐含量高,很难满足现有排放标准。对于安全性,建议臭氧设备采用单独房间布置并配独立通风,危险区内设备采用专用防腐材料,并配备O2、O3浓度和温度检测系统以及防火防爆设备。

In recent years,the development of ozone desulfurization and denitrification technology has been the focus of the ship industry.Based on the principle of ozone desulfurization and denitrification technology,this paper analyzes the advantages and challenges of the application of this technology on sea-going vessels in combination with the actual situation,and puts forward suggestions on safety protection.The analysis results show that compared with the technical solution of SCR+EGC,the ozone desulfurization and denitration technology has the advantages of integrated desulfurization and denitrification,more flexible equipment layout and low dependence on diesel engine operation data.However,there are problems such as large power consumption,low ozone production,and risk of washing water discharge.It is calculated that the power of the ozone desulfurization and denitration system accounts for 6.97%~15.58%of the power of the matched diesel engine.The maximum power of a single diesel generator that can be adapted is 8.49~16.4 MW,and it is difficult to arrange multiple devices in parallel due to the limitation of equipment volume.Washing wastewater has a high nitrate content and it is difficult to meet existing emission standards.For safety,it is recommended that the ozone equipment be arranged in a separate room with independent ventilation.The equipment in the hazardous area is made of special anti-corrosion materials,equipped with O2,O3 concentration and temperature detection systems and fireproof and explosion-proof equipment.