液化气动力箱船的碳捕集设计和仿真  

Design and Simulation of Carbon Capture for Liquefied Gas-Powered Container Vessels

作　　者：宋秀丽 孙瑞 刘建成 叶松茂 胡成龙 SONG Xiu-li;SUN Rui;LIU Jian-cheng;YE Song-mao;HU Cheng-long(Yiulian Dockyards(Shekou)Limited,Shenzhen Guangdong 518054,China;China Merchants Marine and Offshore Research Institute Co.,Ltd.,Shenzhen Guangdong 518063,China;School of Management,Xi’an Jiaotong University,Xi’an 710049,China;China Merchants Heavy Industry(Shenzhen)Co.,Ltd.,Shenzhen Guangdong 518054,China)

机构地区：[1]友联船厂(蛇口)有限公司,广东深圳518054 [2]招商局海洋装备研究院有限公司,广东深圳518063 [3]西安交通大学管理学院,西安710049 [4]招商局重工(深圳)有限公司,广东深圳518054

出　　处：《船海工程》2024年第6期36-41,共6页Ship & Ocean Engineering

基　　金：工信部高技术船舶科研项目(MC-202003-Z01-07);招商局工业集团专项资金(CMMI-0000-APA-0072)。

摘　　要：针对二氧化碳温室气体过量排放导致极端天气频发,分析在液化气动力集装箱船上使用碳捕集技术的布置方案和工艺原理可行性。将二氧化碳储罐设计为新型的标准集装箱撬形式,布置在船中部,而将碳捕捉设备布置在船艉;同时根据上述布置提出一种新的流程,即在采用胺溶液化学吸收法进行二氧化碳的吸收和解吸时,将液化气燃料的冷能用于与返回的贫液进行热量耦合,采用管壳式换热器进行热交换,液化气燃料经换热器被加热后供给主机,贫液被冷却后回吸收塔,据此流程进行热量分析和仿真计算。结果显示,贫液在一定范围内可使液化气燃料升温后满足主机使用,但贫液本身降温后仍高于再利用吸收温度。分析表明,在各种捕捉率下,液化气燃料对贫液的冷却效果都较小,贫液返回吸收塔前需要施加额外的冷却措施才可达到40℃;而贫液对液化气温度提升明显,在捕捉率为60%时可将燃料进机温度控制在25~45℃区间,满足主机需求;同时CII(碳强度指标)的计算结果说明将捕捉率设定在20%即可使中小型箱船达到碳强度A评级。The feasibility of using carbon capture technology on small and medium-sized container vessels powered by liquefied gas was analyzed,in response to the frequent occurrence of extreme weather caused by carbon dioxide greenhouse gases.The carbon dioxide storage tank was designed as a new standard container form,which was arranged in the middle of the ship,and the carbon capture equipment was arranged at in the stern of the ship.A new diagram process was proposed based on the above arrangement,using the ethanolamine solution chemical absorption method to absorb and desorb carbon dioxide,and couple the cold energy of liquefied gas fuel with the returned lean liquid for heat exchange.A shell and tube heat exchanger was used for heat exchange,and the liquefied gas fuel was heated by the heat exchanger and supplied to the main engine.The lean liquid was cooled and returned to the absorption tower.Based on this process,heat analysis and simulation calculation were carried out.The results indicated that the hot lean liquid can make the liquefied gas fuel meet the requirements of the host after heating up within a certain range,but the lean liquid itself is still higher than the absorption temperature for reuse after cooling down.It was shown that under various capture rates,the cooling effect of liquefied gas fuel on lean liquid is relatively small,and additional cooling measures need to be applied before the lean liquid returns to the absorption tower to reach 40℃;The lean liquid significantly increases the temperature of liquefied gas,and when the capture rate is 60%,the fuel inlet temperature can be controlled in the range of 25~45℃to meet the needs of the engine;The calculation results of CII indicated that setting the capture rate at 20%on container vessel can achieve a carbon intensity A rating.

关 键 词：液化气燃料 碳捕捉 CFD仿真 碳强度评级 

分 类 号：U662[交通运输工程—船舶及航道工程]