单乙醇胺吸收CO2的热力学模型和过程模拟

doi:10.3969/j.issn.0438-1157.2014.01.006

化工学报 ›› 2014, Vol. 65 ›› Issue (1): 47-54.DOI: 10.3969/j.issn.0438-1157.2014.01.006

单乙醇胺吸收CO₂的热力学模型和过程模拟

李晗, 陈健

清华大学化学工程联合国家重点实验室, 北京 100084

收稿日期:2013-07-01 修回日期:2013-10-08 出版日期:2014-01-05 发布日期:2014-01-05
通讯作者: 陈健
作者简介:李晗（1989-），女，博士研究生。
基金资助:
国家自然科学基金项目（51134017）。

Thermodynamic modeling and process simulation for CO₂ absorption into aqueous monoethanolamine solution

LI Han, CHEN Jian

State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2013-07-01 Revised:2013-10-08 Online:2014-01-05 Published:2014-01-05
Supported by:
supported by the National Natural Science Foundation of China（51134017）.

摘要/Abstract

摘要： 采用非随机双流体电解质（ENRTL）热力学模型，通过拟合单乙醇胺（MEA）的饱和蒸气压、热容数据，MEA和水（H₂O）二元体系的汽液平衡、热容、混合热数据，以及二氧化碳（CO₂）在MEA水溶液中的溶解度数据，建立了MEA吸收CO₂的热力学模型，并用核磁共振（NMR）组成数据成功地进行了验证。在此模型基础上，利用平衡级模型建立了MEA吸收/解吸CO₂的过程模拟，利用文献中中试工厂数据验证了过程模拟的准确性。对于质量分数为30%的MEA溶液，固定吸收塔CO₂去除率为90%的条件下，当吸收塔液气质量流率比值为2时，再沸器能耗最小，为3.64 GJ·（t CO₂）^-1。

关键词: CO₂, 吸收, 热力学, 模拟, 单乙醇胺

Abstract: A thermodynamic model for monoethanolamine (MEA)-H₂O-CO₂ was built using the electrolyte non-random two-liquid model. Over twenty parameters were regressed from the vapor pressure and heat capacity data for MEA, data of vapor-liquid equilibrium, heat capacity and heat of mixing for MEA-H₂O, and CO₂ solubility data for MEA-H₂O-CO₂ over a wide range of temperature, concentration and CO₂ loading. The model was validated by the NMR speciation data and then used to build a process simulation for CO₂ absorption/ desorption into 30%(mass) MEA. The simulation results match the pilot plant data in literature. For 30%(mass) MEA solution, when the CO₂ removal rate in the absorber is 90%, the reboiler heat duty is the minimum by changing the mass flow ratio of liquid to gas in the absorber. The minimum reboiler heat duty is 3.64 GJ·(t CO₂)^-¹, when the ratio is 2.

Key words: carbon dioxide, absorption, thermodynamics, simulation, monoethanolamine

中图分类号:

TQ028.8

李晗, 陈健. 单乙醇胺吸收CO₂的热力学模型和过程模拟[J]. 化工学报, 2014, 65(1): 47-54.

LI Han, CHEN Jian. Thermodynamic modeling and process simulation for CO₂ absorption into aqueous monoethanolamine solution[J]. CIESC Journal, 2014, 65(1): 47-54.

参考文献 23

[1]	IPCC. Climate Change 2007 — The Physical Science Basis, Summary for Policymakers of the Working Group I Report[R]. Cambridge: Cambridge University Press, 2007
[2]	Fei Weiyang(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[J]. Chem. Ind. & Eng. Prog. (化工进展), 2005, 24(1): 1-8
[3]	Fei Weiyang(费维扬). Develop low-carbon economics, promote energy-saving and emission reduction[J]. Chem. Ind. & Eng. Prog. (化工进展), 2009, 28(suppl.):405
[4]	Jing Yu(靖宇), Wei Li(韦力), Wang Yundong(王运东). The advances of adsorbents in the field of CO2 capture[J]. Chem. Ind. & Eng. Prog. (化工进展), 2011, 30(suppl.): 133-138
[5]	Tang Lina(康丽娜), Shang Huijian(尚会建), Zheng Xueming(郑学明). Progress of CO2 capture and storage and it's application prospects in China[J]. Chem. Ind. & Eng. Prog. (化工进展), 2010, 29 (suppl.): 24-27
[6]	Zheng Que(郑碏), Dong Lihu(董立户), Chen Jian(陈健), Gao Guanghua(高光华), Fei Weiyang(费维扬). Absorption solubility calculation and process simulation for CO2 capture[J]. CIESC Journal(化工学报), 2010, 61(7): 1740-1746
[7]	Zhang Yaping(张亚萍), Liu Jianzhou(刘建周), Ji Qinqin(季芹芹), Luo Hongqing(罗红情), Wang Jianying(王剑英). Process simulation and optimization of flue gas CO2 capture by the alkanolamine solutions[J]. Chem. Ind. & Eng. Prog. (化工进展), 2013, 32(4): 930-935
[8]	Chen C C, Evans L B. A local composition model for the excess gibbs energy of aqueous electrolyte systems[J]. AIChE Journal, 1986, 32(3): 444-454
[9]	Cousins A, Cottrell A, Lawson A, Huang S, Feron P H M. Model verification and evaluation of the rich-split process modification at an australian-based post combustion CO2 capture pilot plant[J]. Greenhouse Gas Sci. Technol., 2012, 2: 329-345
[10]	Edwards T J, Maurer G, Newman J, Prausnitz J M. Vapor-liquid equilibria in multicomponent aqueous solutions of volatile weak electrolytes[J]. AIChE Journal, 1978, 24(6): 966-976
[11]	Bates R G, Pinching G D. Acidic dissociation constant and related thermodynamic qantities for monoethanolammonium ion in water from 0 to 50℃[J]. J. Res. Natl. Bur. Stand. (U.S.), 1951, 46(5): 349-352
[12]	Austgen D M. A model of vapor-liquid equilibria for acid gas-alkanolamine-water systems[D]. Austin: The University of Texas at Austin, 1989
[13]	Chen C C, Britt H I, Boston J F, Evans L B. Extension and application of the pitzer equation for vapor-liquid equilibrium of aqueous electrolyte systems with molecular solutes[J]. AICHE J., 1979, 25: 820-831
[14]	Chiu L F, Liu H F, Li M H. Heat capacity of alkanolamines by differential scanning calorimetry[J]. J. Chem. Eng. Data, 1999, 44(4):631-636
[15]	Kim I, Svendsen H F, Borresen E. Ebulliometric determination of vapor-liqiud equilibria for pure water, monoethanolamine, N-methyldiethanolamine, 3-(methylamino)-propylamine, and their binary and ternary solutions[J]. J. Chem. Eng. Data, 2008, 53: 2521-2531
[16]	Belabbaci A, Razzouk A, Mokbel I, Jose J, Negadi L. Isothermal vapor-liquid equilibria of (monoethanolamine + water) and (4-methylmorpholine + water) binary systems at several temperatures[J]. J. Chem. Eng. Data, 2009, 54: 2312-2316
[17]	Chiu L F, Li M H. Heat capacity of alkanolamine aqueous solutions[J]. J. Chem. Eng. Data, 1999, 44: 1396-1401
[18]	Lee J I, Frederick D O, Mather A E. Equilibrium between carbon dioxide and aqueous monoethanolamine solutions[J]. J. Appl. Chem. Biotechnol., 1976, 26: 541-546
[19]	Jou F Y, Mather A E, Otto F D. The solubility of CO2 in a 30 mass percent monoethanolamine solution[J]. The Canadian Journal of Chemical Engineering, 1995, 73: 140-147
[20]	Ma'mum S, Nilsen R, Svendsen H F. Solubility of carbon dioxide in 30 mass% monoethanolamine and 50 mass% methyldiethanolamine solutions[J]. J. Chem. Eng. Data, 2005, 50: 630-634
[21]	Xu Q, Rochelle G. Total pressure and CO2 solubility at high temperature in aqueous amines[J]. Energy Procedia, 2011, 4: 117-124
[22]	Hilliard M D. A predictive thermodynamic model for an aqueous blend of potassium carbonate, piperazine, and monoethanolamine for carbon dioxide capture from flue gas[D]. Austin: The University of Texas at Austin, 2008
[23]	Jakobsen J P, Krane J, Svendsen H F. Liquid-phase composition determination in CO2-H2O-alkanolamine systems: an NMR study[J]. Ind. Eng. Chem. Res., 2005, 44: 9894-9903

单乙醇胺吸收CO₂的热力学模型和过程模拟

Thermodynamic modeling and process simulation for CO₂ absorption into aqueous monoethanolamine solution

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献 23

相关文章 15

编辑推荐

Metrics

本文评价

[1]	叶展羽, 山訸, 徐震原. 用于太阳能蒸发的折纸式蒸发器性能仿真[J]. 化工学报, 2023, 74(S1): 132-140.
[2]	张龙, 宋孟杰, 邵苛苛, 张旋, 沈俊, 高润淼, 甄泽康, 江正勇. 管翅式换热器迎风侧翅片末端霜层生长模拟研究[J]. 化工学报, 2023, 74(S1): 179-182.
[3]	张义飞, 刘舫辰, 张双星, 杜文静. 超临界二氧化碳用印刷电路板式换热器性能分析[J]. 化工学报, 2023, 74(S1): 183-190.
[4]	王志国, 薛孟, 董芋双, 张田震, 秦晓凯, 韩强. 基于裂隙粗糙性表征方法的地热岩体热流耦合数值模拟与分析[J]. 化工学报, 2023, 74(S1): 223-234.
[5]	杨天阳, 邹慧明, 周晖, 王春磊, 田长青. -30℃电动汽车补气式CO₂热泵制热性能实验研究[J]. 化工学报, 2023, 74(S1): 272-279.
[6]	杨欣, 王文, 徐凯, 马凡华. 高压氢气加注过程中温度特征仿真分析[J]. 化工学报, 2023, 74(S1): 280-286.
[7]	宋嘉豪, 王文. 斯特林发动机与高温热管耦合运行特性研究[J]. 化工学报, 2023, 74(S1): 287-294.
[8]	张思雨, 殷勇高, 贾鹏琦, 叶威. 双U型地埋管群跨季节蓄热特性研究[J]. 化工学报, 2023, 74(S1): 295-301.
[9]	黄琮琪, 吴一梅, 陈建业, 邵双全. 碱性电解水制氢装置热管理系统仿真研究[J]. 化工学报, 2023, 74(S1): 320-328.
[10]	常明慧, 王林, 苑佳佳, 曹艺飞. 盐溶液蓄能型热泵循环特性研究[J]. 化工学报, 2023, 74(S1): 329-337.
[11]	金正浩, 封立杰, 李舒宏. 氨水溶液交叉型再吸收式热泵的能量及分析[J]. 化工学报, 2023, 74(S1): 53-63.
[12]	代宝民, 王启龙, 刘圣春, 张佳宁, 李鑫海, 宗凡迪. 非共沸工质辅助过冷CO₂冷热联供系统的热力学性能分析[J]. 化工学报, 2023, 74(S1): 64-73.
[13]	张化福, 童莉葛, 张振涛, 杨俊玲, 王立, 张俊浩. 机械蒸汽压缩蒸发技术研究现状与发展趋势[J]. 化工学报, 2023, 74(S1): 8-24.
[14]	米泽豪, 花儿. 基于DFT和COSMO-RS理论研究多元胺型离子液体吸收SO₂气体[J]. 化工学报, 2023, 74(9): 3681-3696.
[15]	陈美思, 陈威达, 李鑫垚, 李尚予, 吴有庭, 张锋, 张志炳. 硅基离子液体微颗粒强化气体捕集与转化的研究进展[J]. 化工学报, 2023, 74(9): 3628-3639.