液氮冷凝油气回收技术在石化码头中的应用研究  

Research on Application of Liquid Nitrogen Condensation in Oil Gas Recycling in Petrochemical Terminals

作　　者：李宁 乔剑华[2] Li Ning;Qiao Jianhua(Huizhou Port Energy Terminal Investment Co.,Ltd.,Huizhou Guangdong 516081,China;CCCC First Harbor Consultants Co.,Ltd.,Tianjin 300220,China)

机构地区：[1]惠州港能源码头投资有限公司,广东惠州516081 [2]中交第一航务工程勘察设计院有限公司,天津300220

出　　处：《港口航道与近海工程》2024年第3期37-41,共5页Port,Waterway and Offshore Engineering

摘　　要：冷凝法是一种可以直接实现废气资源化的回收方式,主要有机械冷凝法和液氮冷凝法。前者受限于制冷机制,其制冷温度较高,难以达到越来越严格的排放要求,而液氮冷凝法的制冷温度可低达-120℃以下,甚至可达到-180℃,可更好的满足排放标准。本文通过具体的工程实例,对“液氮冷凝+活性炭纤维吸附法”、“机械制冷冷凝+活性炭纤维吸附法”和“机械制冷冷凝+催化燃烧法”等方案进行多方面比选,最终选择“液氮冷凝+活性炭纤维吸附法”的油气回收建设方案,并结合氮气的产生情况、配套库区氮气的需求情况等,提出了氮气的综合利用方案,可供同类工程建设参考。Condensation is a recycling method that directly transform waste gas into a resource,and can be divided into mechanical condensation and liquid nitrogen condensation.The former is limited by refrigeration mechanism,its high refrigeration temperature cannot meet increasingly strict emission requirements.However,the refrigeration temperature of liquid nitrogen can be lower than-120℃or even up to-180℃,which meets the emission standard well.In the case,multiple plans are compared based on specific engineering practice,including liquid nitrogen condensation+adsorption of activated carbon fiber,mechanical condensation+adsorption of activated carbon fiber,and mechanical condensation+catalytic combustion method.Finally,an oil gas recycling plan based on liquid nitrogen condensation+adsorption of activated carbon fiber is selected,a comprehensive nitrogen utilization plan is proposed by combining the production of nitrogen with the demand for nitrogen in the supporting oil gas depot,which can be used as a reference for similar projects.

关 键 词：液氮冷凝 石化码头 油气回收 机械冷凝 活性碳吸附 

分 类 号：X701[环境科学与工程—环境工程]