汤志刚,李红伟,贺志敏,崔敬杰,郭栋,赵志军

• 1:清华大学化学工程系化学工程联合国家重点实验室

摘要(Abstract)：

全球CO_2减排的要求日益严峻,碳捕集成本较高,迫切需要开发高效率、低成本的捕集技术。碳酸二乙酯(DEC)是一种新型高效的CO_2吸收溶剂,今采用恒定溶剂法测定282.79~302.69 K下CO_2在DEC中的溶解度,并采用Prausnitz-Shair法、分子连接性指数(MCI)和PR状态方程法对其进行了预测;通过与碳酸二甲酯(DMC)的相平衡数据对比,发现相同温度下,DEC的亨利系数小于DMC。采用连续吸收-解吸实验对DEC吸收CO_2效果进行综合评价,通过研究液气比、吸收温度、解吸温度(采用加热解吸)和N_2流量(采用气提解吸)对CO_2吸收率的影响,探索出最佳操作条件;并与DMC的实验结果进行对比,发现采用N_2气提解吸,DEC系统成本明显低于DMC。加热解吸能耗高,气提解吸溶剂损失大,因而探索了一种通过压缩、冷凝进行解吸的新流程,经模拟计算,发现其流程简单,系统成本比加热解吸少,但比气提解吸多;与DMC结果进行对比,发现DEC优于DMC。结果表明,DEC是一种比较有潜力的CO_2吸收溶剂。

关键词(KeyWords)： CO2捕集;碳酸二乙酯;溶解度测定;预测模型;连续吸收解吸实验

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学重点基金(51134017)

作者(Author): 汤志刚,李红伟,贺志敏,崔敬杰,郭栋,赵志军

参考文献(References)：

• [1]XU Hai-tao(徐海涛),LIAO Jian-hua(廖建华),LIANG Hong-bo(梁红波),et al.Synthesis and CO2 capture properties of a novel poly(ionic liquid)(新型聚离子液体的制备及其捕获CO2性能研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2015,29(1):226-231.
• [2]YAN Yun-fei(闫云飞),ZHANG Zhi-en(张智恩),YAN Shui-ping(晏水平),et al.Simulation on the structure effects of hollow fiber membrane on CO2 removal from flue gas(中空纤维膜结构对脱除烟气中CO2影响的数值研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2015,29(1):452-457.
• [3]LU Jian-gang(陆建刚),ZHANG Hui(张慧),JI Yan(嵇艳),et al.Performance evaluation of a amino acid salt-based complex solution used for CO2 capture(一种氨基酸盐基复合溶液捕集CO2气体性能评价)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2013,27(2):410-415.
• [4]Intergovernmental Panel on Climate Change.Special report on carbon dioxide capture and storage[M].Cambridge:Cambridge University Press,2005.
• [5]Intergovernmental Panel on Climate Change.Summary for policymakers[M].Cambridge:Cambridge University Press,2007.
• [6]IEA.World energy outlook[M].Paris:International Energy Agency(IEA),2012.
• [7]Thitakamol B,Veawab A,Aroonwilas A.Environmental impacts of absorption-based CO2 capture unit for post-combustion treatment of flue gas from coal-fired power plant[J].International Journal of Greenhouse Gas Control,2007,1(3):318-342.
• [8]Meadowcroft J,Langhelle O.Caching the carbon.The politics and policy of carbon capture and storage[M].Cheltenham:Edward Elgar Publishing Inc,2009.
• [9]Bu-Khader M M.Recent progress in CO2 capture/sequestration:a review[J].Energy Sources Part A-recovery Utilization and Environmental Effects,2006,28(14):1261-1279.
• [10]Anne-Maree Dowd,Kenshi Itaoka,Peta Ashworth,et al.Investigating the link between knowledge and perception of CO2 and CCS:An international study[J].International Journal of Greenhouse Gas Control,2014,28:79-87.
• [11]Selma L’Orange Seigo,Joseph Arvai,Simone Dohle,et al.Predictors of risk and benefit perception of carbon capture and storage(CCS)in regions with different stages of deployment[J].International Journal of Greenhouse Gas Control,2014,25:23-32.
• [12]FEI Wei-yang(费维扬),AI Ning(艾宁),CHEN Jian(陈健).Capture and separation of greenhouse gases CO2——the challenge and opportunity for separation technology(温室气体CO2的捕集和分离——分离技术面临的挑战与机遇)[J].Chemical Industry and Engineering Process(化工进展),2005,24(1):1-4.
• [13]JIANG Shang(姜尚),SUN Cheng-gui(孙承贵),JIA Jing-xuan(贾静璇),et al.Application of nonporous hollow fiber membrane contactor in CO2 removal(中空纤维致密膜基吸收法在CO2脱除中的应用)[J].J Chemical Eng of Chinese Univ(高校化学工程学报),2013,27(2):304-308.
• [14]ZHANG Zong-zheng(张中正),WANG Hui(王慧),WEI Wei(魏伟),et al.Study on CO2 adsorption properties of PEI-modified mesoporous molecular sieve KIT-6PEI(改性介孔分子筛KIT-6对CO2吸附性能的研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2014,28(1):171-176.
• [15]NIU Zhen-qi(牛振祺),GUO Yin-cheng(郭印诚),LIN Wen-yi(林文漪).Comparison of capture efficiencies of carbon dioxide by fine spray of aqueous ammonia and MEA solution(氨水与MEA喷雾捕集CO2能力的比较)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2010,24(3):514-517.
• [16]SHEN Shu-feng(申淑锋),FENG Xiao-xia(冯晓霞),ZHAO Rui-hong(赵瑞红).Kinetics of CO2 absorption by promoted aqueous potassium carbonate solution(活化碳酸钾溶液吸收CO2的动力学研究)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2013,27(5):903-909.
• [17]Catalanotti E,Hughes K J,Porter R T J,et al.Evaluation of performance and cost of combustion-based power plants with CO2capture in the united kingdom[J].Environmental Progress&Sustainable Energy,2014,33(4):1425-1431.
• [18]Van Dijk H A J,Cohen D,Hakeem A A,et al.Validation of a water-gas shift reactor model based on a commercial Fe Cr catalyst for pre-combustion CO2 capture in an IGCC power plant[J].International Journal of Greenhouse Control,2014,29:82-91.
• [19]Calin-Cristian Cormos.Integrated assessment of IGCC power generation technology with carbon capture and storage(CCS)[J].Energy,2014,42(1):434-445.
• [20]Jeremy Urech,Laurence Tock,Trent Harkin,et al.An assessment of different solvent-based capture technologies within an IGCC-CCS power plant[J].Energy,2014,64(1):268-276.
• [21]Mark Prins,Rob van den Berg,Evert van Holthoon,et al.Technological developments IGCC for carbon capture[J].Chemical Engineering Technology,2012,35(3):413-419.
• [22]GUI Xia(桂霞),TANG Zhi-gang(汤志刚),FEI Wei-yang(费维扬).Solubility determination of CO2 in physical solvents under high pressure(高压下CO2在几种物理吸收剂中的溶解度测定)[J].Chemical Engineering(化学工程),2011,39(6):55-58.
• [23]GUI X,TANG Z G,FEI W Y.Solubility of CO2 in alcohols,glycols,ethers,and ketones at high pressures from(288.15 to 318.15)K[J].Journal of Chemical&Engineering Data,2011,56,2420-2429.
• [24]LI Tie-zhi(李铁枝),HU Hui(胡晖),TANG Zhi-gang(汤志刚).Solubility of CO2 in dimethyl carbonate mixed solvents(CO2在碳酸二甲酯混合溶剂中的溶解度)[J].Chemical Engineering(化学工程),2011,39(3):54-58.
• [25]LI Yi(李翼),TANG Zhi-gang(汤志刚),ZHU Ji-qin(朱吉钦),et al.CO2 solubility in dimethyl carbonate and its intensification approaches(CO2在碳酸二甲酯中的溶解度及强化途径)[J].Chemical Engineering(化学工程),2010,38(8):69-72.
• [26]AI Ning(艾宁),LI Bao-hong(李保红),CHEN Jian(陈健),et al.Measurement of CO2 solubilities in dimethyl carbonate(CO2在碳酸二甲酯溶剂中溶解度的测定)[J].Chemical Engineering(化学工程),2005,33(3):51-54.
• [27]GUI X,TANG Z G,FEI W Y.CO2 capture with physical solvent dimethyl carbonate(DMC)at high pressures[J].Journal of Chemical and Engineering Data,2010,55(9):3736-3741.
• [28]CUI Jing-jie(崔敬杰),LI Hong-wei(李红伟),TANG Zhi-gang(汤志刚),et al.Continuous absorption-desorption system for CO2capture with dimethyl carbonate(碳酸二甲酯吸收捕集CO2工艺流程)[J].Chemical Engineering(化学工程),2014,42(9):1-11.
• [29]AI Ning(艾宁).Study on the absorption process used for the capture of greenhouse gas carbon dioxide(用于温室气体CO2捕集的吸收过程的研究)[D].Beijing(北京):Tsinghua University(清华大学),2004.
• [30]GUI Xia(桂霞).Study on pre-combustion CO2 capture by coupling process(燃烧前二氧化碳捕集耦合新工艺的研究)[D].Beijing(北京):Tsinghua University(清华大学),2011.
• [31]LI Tie-zhi(李铁枝).Research and simulation of capture CO2 in the mesohigh by solvent absorption method(中高压溶剂吸收法捕集CO2的研究与模拟)[D].Fuzhou(福州):Fuzhou University(福州大学),2011.
• [32]Peng D Y,Robinson D B.A new tow-constant equation of state[J].Ind Eng Chem Fundamen,1976,15(1):59-64.
• [33]Orbey H,Sandler S I.Modeling vapor-liquid equilibria:cubic equations of state and their mixing rules[M].Cambridge:Cambridge University Press,1998.
• [34]Chael H K,Siberio-Pérez.D Y,KIM J,et al.A route to high surface area,porosity and inclusion of large molecules in crystals[J].Nature,2004,427(6974):523-527.