低能耗化学吸收碳捕集技术展望  

Perspective on low-energy chemical absorption for CO_(2) capture

作　　者：唐思扬 李星宇 鲁厚芳[1,2] 钟山 梁斌 TANG Siyang;LI Xingyu;LU Houfang;ZHONG Shan;LIANG Bin(School of Chemical Engineering,Sichuan University,Chengdu 610065,Sichuan,China;Institute of New Energy and Low-Carbon Technology,Sichuan University,Chengdu 610207,Sichuan,China)

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]四川大学新能源与低碳技术研究院,四川成都610207

出　　处：《化工进展》2022年第3期1102-1106,共5页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(21878190);国家重点研发计划(2018YFB0605700)。

摘　　要：低能耗的CO_(2)捕集技术对“碳减排”有重要意义。化学吸收法是工业常用的CO_(2)捕集方法,过程能耗高、成本高,限制了大规模的工业应用。近年来,随着新型吸收剂的开发和吸收解吸装置的设计,过程能耗有所降低,在我国已有多套碳捕集示范装置。然而进一步降低捕集能耗,节约捕集成本是实现“碳中和”的不变追求。本文基于溶剂化学吸收CO_(2)研究,提出以下化学吸收法的研究方向:开发广泛的相变吸收理论,构建吸收体系数据库,建立定量预测模型,以实现吸收体系的分子设计;强化气液传质,设计液相传热部件和气液分离空间,研发高效吸收解吸设备,以提升碳捕集效率;耦合化学吸收和矿化,实现原位CO_(2)吸收固定,提升过程经济性。通过化学吸收技术的系统研发,以期促进低能耗的碳捕集,助力祖国实现“碳中和”。CO_(2) capture with a low energy consumption is of application significance for reducing CO_(2) emission.Chemical absorption,commercialized for decades,has been regarded as an effective method for CO_(2) capture.However,a high energy consumption and a high cost limit the large-scale industrial applications.Some new absorbents and specific devices are developed.With the reduce of energy consumption of chemical absorption,several demonstration projects have been established in China recently.And reducing the capture energy consumption and lowering the capture cost are the constant pursuits for achieving“carbon neutrality”.The following suggestions of chemical absorption are proposed on the basis of the previous researches:developing a broadly applicable absorption theory for phasechange absorption system,building an database of the absorption systems,and establishing some quantitative models are proposed for effectively developing new solvents for CO_(2) absorption;strengthening the gas-liquid mass transfer and designing heat transfer components with high performance are proposed for improving carbon capture efficiency;coupling chemical absorption and mineralization are proposed to achieve in-situ CO_(2) absorption and fixation,which may increase the economy of the process.All those accumulated researches are expected to promote carbon capture and to achieve“carbon neutrality”.

关 键 词：二氧化碳 化学吸收 过程强化 矿化 低能耗 

分 类 号：TQ0[化学工程]