纳微界面增强CO2吸收及机理分析

doi:10.11949/0438-1157.20191227

摘要/Abstract

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

中图分类号:

TQ 01

陆小华, 陈义峰, 董依慧, 吉晓燕, 谢文龙, 吴楠桦, 安蓉, 戴中洋, 李峥. 纳微界面增强CO₂吸收及机理分析[J]. 化工学报, 2020, 71(1): 34-42.

Xiaohua LU, Yifeng CHEN, Yihui DONG, Xiaoyan JI, Wenlong XIE, Nanhua WU, Rong AN, Zhongyang DAI, Zheng LI. Nano-interface enhanced CO₂ absorption and mechanism analysis[J]. CIESC Journal, 2020, 71(1): 34-42.

图/表 3

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纳微界面增强CO₂吸收及机理分析

Nano-interface enhanced CO₂ absorption and mechanism analysis

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