化工学报 ›› 2020, Vol. 71 ›› Issue (1): 34-42.DOI: 10.11949/0438-1157.20191227

• 综述与专论 • 上一篇    下一篇

纳微界面增强CO2吸收及机理分析

陆小华1(),陈义峰1,董依慧1,吉晓燕2,谢文龙1,吴楠桦1,安蓉3,戴中洋1,李峥1   

  1. 1. 南京工业大学化工学院,江苏 南京 211816
    2. 吕勒奥工业大学能源工程系,瑞典 吕勒奥 97187
    3. 南京理工大学材料科学与工程学院,格莱特纳米科学研究所,江苏 南京 210094
  • 收稿日期:2019-10-23 修回日期:2019-11-23 出版日期:2020-01-05 发布日期:2020-01-05
  • 通讯作者: 陆小华
  • 作者简介:陆小华(1959—),男,博士,教授,xhlu@njtech.edu.cn
  • 基金资助:
    国家自然科学基金项目(21838004);国家自然科学基金海外及港澳学者合作研究项目(21729601)

Nano-interface enhanced CO2 absorption and mechanism analysis

Xiaohua LU1(),Yifeng CHEN1,Yihui DONG1,Xiaoyan JI2,Wenlong XIE1,Nanhua WU1,Rong AN3,Zhongyang DAI1,Zheng LI1   

  1. 1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
    2. Energy Engineering, Division of Energy Science, Lule? University of Technology, Lule? 97187, Sweden
    3. Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology, Nanjing 210094, Jiangsu, China
  • Received:2019-10-23 Revised:2019-11-23 Online:2020-01-05 Published:2020-01-05
  • Contact: Xiaohua LU

摘要:

CO2捕集与分离是解决当前全球温室效应和发展可再生能源的关键步骤,传统CO2分离及过程强化方法存在速率与效率的博弈。纳微界面强化广泛用于多相传递的化工过程,其对CO2传递过程的影响也比较显著。本综述从纳微界面处CO2传递模型的建立及阻力调控、纳微界面处CO2平衡态化学位的获取(推动力调控)以及界面强化机制的分子模拟分析等三个方面进行阐述。基于上述结果进一步分析真实吸收塔分离CO2过程的阻力调控并提出“三段式强化方案”,以优化CO2分离过程的投资与运行成本。

关键词: 二氧化碳, 纳微界面, 过程强化, 离子液体, 热力学, 模型

Abstract:

CO2 capture and separation (CCS) is a key step to mitigate greenhouse gas emissions and develop renewable energy. The trade-off between the rate and efficiency in the CO2 separation process cannot be solved with the traditional process intensification. Using nano-interface to realize process intensification has been widely used in the chemical process with multi-phase transfer, and CO2 separation is one of examples. This review summarizes the research work from the establishment of CO2 transfer model at nano-interface and the resistance regulation, the acquisition of the CO2 chemical potentials at equilibrium and at the nano-interface (the driving force regulation) and the molecular simulation analysis of the interface enhancement mechanism. Based on the theoretical studies, the resistance distribution for the CO2 separation process in a real absorption tower is further analyzed and a “three-stage strengthening scheme” is proposed to decrease the investment and operating costs.

Key words: carbon dioxide, nano-interface, process intensification, ionic liquid, thermodynamics, model

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