乙醇胺捕集燃煤烟气二氧化碳工艺模拟

doi:10.19964/j.issn.1006-4990.2021-0763

Abstract

Abstract:

The organic amine method is one of the most effective CO₂ capturing techniques for coal-fired flue gas.Aspen plus was used to simulate the process of flue gas CO₂ capture by ethanolamine（MEA）.Firstly，separate absorption tower and regeneration tower were simulated，and then the comprehensive absorption-desorption simulation was carried out based on the convergence of the separate system model.The flue gas flow rate was 8.22 m³/min and the molar fraction of CO₂ was 0.18，the flow rate of MEA was 2 311.3 kg/h and the molar fraction of MEA was 0.12.The simulation results of CO₂ capture by MEA were as follows: the CO₂ removal rate was 69.3%，the CO₂ mole fraction in the purifing gas was 5.33×10^-2，the CO₂ mole fraction of regeneration tower top was 0.956，which basically met the design requirements，providing a basis for further research on CO₂ absorption by amine method.

Key words: ethanolamine, CO₂, Aspen plus, simulation, coal-firing flue gas

CLC Number:

TQ127.1

ZHANG Yaping. Process simulation of carbon dioxide capture from coal-firing flue gas by ethanolamine[J]. Inorganic Chemicals Industry, 2022, 54(8): 96-100.

Figures/Tables 12

Fig.1

Table 1

Reaction processes of MEA simulation"

编号	反应类型	反应式
1	Equilibrium	2H₂O $?$ H₃O⁺+OH^-
2	Equilibrium	CO₂+2H₂O $?$ HCO₃^-+H₃O⁺
3	Equilibrium	HCO₃^-+H₂O $?$ CO₃^2-+H₃O⁺
4	Equilibrium	MEAH⁺+H₂O $?$ MEA+H₃O⁺
5	Equilibrium	MEACOO^-+H₂O $?$ MEA+HCO₃^-
6	Equilibrium	SO₂+H₂O $?$ HSO₃^-+H⁺
7	KINETIC	CO₂+OH^- $?$ HCO₃^-
8	KINETIC	HCO₃^- $?$ CO₂+OH^-
9	KINETIC	MEA+CO₂+H₂O $?$ MEACOO^-+H₃O⁺
10	KINETIC	MEACOO^-+H₃O⁺ $?$ MEA+CO₂+H₂O
11	KINETIC	MEA+SO₂+H₂O $?$ MEAH⁺+HSO₃^-

Table 1

Table 2

Table 3

Table 4

Fig.2

Table 5

Fig.3

Table 6

Table 7

Fig.4

Table 8

References 13

1	刘晴晴，叶佳璐.浅析二氧化碳捕集储存技术研究进展[J].当代化工研究, 2021（18): 160-161.
	LIU Qingqing,YE Jialu.Analysis on the research progress of carbon dioxide capture and storage technology[J].Modern Chemical Research, 2021（18): 160-161.
2	陆胤君，陆诗建，郭伯文，等.烟气CO₂捕集吸收剂腐蚀性分析与缓蚀剂开发[J].天然气化工: C1化学与化工，2021, 46(5): 102-105，111.
	LU Yinjun,LU Shijian,GUO Bowen，et al.Corrosiveness analysis and corrosion inhibitor development of CO₂ capture absorbent for flue gas[J].Natural Gas Chemical Industry, 2021, 46(5): 102-105，111.
3	徐学基，刘仕伟，李露，等.可循环胺类吸收剂用于烟气脱碳的研究[J].应用化工, 2017, 46(7): 1335-1339.
	XU Xueji,LIU Shiwei,LI Lu，et al.Research on cyclic amines absorber for removal of CO₂ in flue gas[J].Applied Chemical Industry, 2017, 46(7): 1335-1339.
4	王凤池，刘飞，赵瑞，等.基于DEEA/MEA两相吸收剂的15万t/年烟气CO₂捕集工艺模拟和技术经济分析[J].中国电机工程学报, 2021, 41(23): 8088-8096.
	WANG Fengchi,LIU Fei,ZHAO Rui，et al.Process simulation and techno-economic analysis on 150 000t/year CO₂ chemical absorption process from flue gas based on DEEA/MEA biphasic solvent[J].Proceedings of the CSEE, 2021, 41(23): 8088-8096.
5	李飒，林千果，梁希，等.钢铁高炉煤气二氧化碳捕集技术经济性分析[J].环境工程, 2021, 39(9): 117-122，175.
	LI Sa,LIN Qianguo,LIANG Xi，et al.Technical and economic analysis of carbon dioxide capture of iron and steel blast furnace gas[J].Environmental Engineering, 2021, 39(9): 117-122，175.
6	孙剑，夏剑忠，施云海.MDEA-MEA混合醇胺脱硫脱碳的模拟计算[J].化学反应工程与工艺, 2007, 23(3): 279-283.
	SUN Jian,XIA Jianzhong,SHI Yunhai.Modelling of H₂S and CO₂ absorption in aqueous solution of MDEA-MEA[J].Chemical Reaction Engineering and Technology, 2007, 23(3): 279-283.
7	王智力，黄爱斌，陈平，等. N-甲基二乙醇胺溶液对H₂S和CO₂的吸收模拟[J].化学工程, 2010, 38(6): 5-9.
	WANG Zhili,HUANG Aibin,CHEN Ping，et al.Simulation of absorbing H₂S and CO₂ into aqueous N-methyldiethanolamine solution[J].Chemical Engineering（China）, 2010, 38(6): 5-9.
8	LI Chunxi,FÜRST W.Representation of CO₂ and H₂S solubility in aqueous MDEA solutions using an electrolyte equation of state[J].Chemical Engineering Science, 2000, 55(15): 2975-2988.
9	肖荣鸽，庄琦，王栋，等.基于软件模拟的天然气醇胺法脱硫脱碳工艺研究进展[J].天然气化工: C1化学与化工，2021, 46(4): 21-26.
	XIAO Rongge,ZHUANG Qi,WANG Dong，et al.Research progress of natural gas desulfurization and decarbonization by alcohol amine method based on software simulation[J]. Natural Gas Chemical Industry, 2021, 46(4): 21-26.
10	曾金繁，巨永林.采用醇胺法的沼气脱碳工艺流程模拟及优化[J].现代化工, 2021, 41(8): 224-229.
	ZENG Jinfan,JU Yonglin.Process simulation and parameter optimization of alkanolamine route for removing CO₂ from biogas[J].Modern Chemical Industry, 2021, 41(8): 224-229.
11	唐建峰，王玉娟，王曰，等.Aspen HYSYS对胺法脱碳再生工艺模拟的适用性[J].化工进展, 2021, 40(2): 747-754.
	TANG Jianfeng,WANG Yujuan,WANG Yue，et al.Applicability of Aspen HYSYS for simulation of amine decarbonization regeneration process[J].Chemical Industry and Engineering Progress, 2021, 40(2): 747-754.
12	ARONU U E,GONDAL S,HESSEN E T，et al.Solubility of CO₂ in 15，30，45 and 60 mass% MEA from 40 to 120 ℃ and model representation using the extended UNIQUAC framework[J].Chemical Engineering Science, 2011, 66(24): 6393-6406.
13	ALIE C,BACKHAM L,CROISET E，et al.Simulation of CO₂ capture using MEA scrubbing: A flowsheet decomposition method[J].Energy Conversion and Management, 2005, 46(3): 475-487.

设备	单元操作模型	模拟模型命名
吸收塔	RateFrac	ABSORBER
再生塔	RateFrac	STRIPPER
换热器	HEATX	HEATER
泵	PUMP	PUMP

项目	温度/ K	压力/ kPa	物质的量流率/（mol·s^-1）
项目	温度/ K	压力/ kPa	MEA	H₂O	CO₂	H₃O⁺	OH^-	HCO₃^-	CO₃^2-	MEAH⁺	MEACOO^-	SO₂	HSO₃^-	N₂	O₂	总量
贫MEA LEANIN	313.32	170.27	1.41	22.54	7.29× 10^-7	1.02× 10^-10	2.39× 10^-4	6.47×10^-3	2.43×10^-2	0.92	0.87	2.74×10^-15	2.43×10^-7	0.00	0.00	25.7
烟气 FLUEGAS	332.39	103.32	0.00	8.20× 10^-2	0.94	0		0.00	0	0.00	0.00	5.72×10^-6	0	3.74	0.24	5.1
富MEA RICHOUT	321.29	101.63	0.20	21.45	4.85×10^-4	1.90×10^-9	3.31×10^-5	0.11	5.79×10^-2	1.61	1.39×10^-2	2.52×10^-11	9.71×10^-7	9.37×10^-5	1.08×10^-5	24.8
净化气 GASOUT	334.21	101.33	5.4	9.49×10^-4	1.04	0.29	0	0	0.00	0	0.00	0.00	3.94×10^-5	3.55	0.24	5.4

STRIPPER
类型	塔级数/级	冷凝器类型	再沸器类型	馏出速率/（kg?h^-1）	RICHIN进料位置	冷凝器压力/kPa	塔压降/in-water
RateFrac	20	Partial-Vapor	Kettle	96	On-Stage 2	68.95	1.66

PUMP			HEATER
类型	压力增加/kPa		类型	温度/K
PUMP	137.90		HEATX	354.33

[1]	YAN Xin, LIU Hailu, LIU Baolin, LIU Yi, LIU Yanyang. Research on key technologies and mechanisms of green nano calcium carbonate production [J]. Inorganic Chemicals Industry, 2025, 57(1): 71-76.
[2]	WANG Wei, LI Wei, LI Limin, LIU Dongxu. Study on pretreatment of iron phosphate production wastewater reuse and zero discharge [J]. Inorganic Chemicals Industry, 2024, 56(8): 99-103.
[3]	TANG Biao, TANG Shengwei. Study on preparation of magnesium hydroxide from calcium magnesium nitrate leaching pretreatment of phosphate rock with high content of magnesium and calcium [J]. Inorganic Chemicals Industry, 2024, 56(5): 87-93.
[4]	ZHAN Sijin, LIU Shike, LIU Fei, YAO Mengqin, CAO Jianxin. Study on preparation and catalytic performance of ZnO-CeO₂ [J]. Inorganic Chemicals Industry, 2024, 56(3): 137-143.
[5]	REN Qixia, YANG Kun, LIU Fei, YAO Mengqin, CAO Jianxin. Effect of promoter on physicochemical properties and catalytic performance of ZnO/ZrO₂ [J]. Inorganic Chemicals Industry, 2024, 56(3): 144-154.
[6]	YANG Kun, REN Qixia, DONG Yonggang, LIU Fei, YAO Mengqin, CAO Jianxin. Effect of calcination temperature on catalytic performance of ZnGaZrO _x /SAPO-34 [J]. Inorganic Chemicals Industry, 2024, 56(2): 136-145.
[7]	LI Yang, LOU Feijian, SUI Xin, LI Keyan, LIU Fei, GUO Xinwen. Preparation of amine-functionalized fumed SiO₂ materials and their performance for CO₂ adsorption [J]. Inorganic Chemicals Industry, 2024, 56(2): 38-43.
[8]	HOU Zhanggui, WU Chongchong, ZHANG Siran. Research progress of CO₂ conversion via Reverse Water-Gas Shift reaction [J]. Inorganic Chemicals Industry, 2024, 56(11): 105-115.
[9]	FENG Qing, WANG Yansu, ZHOU Wei, LIU Yang, SUN Yanmin, NAN Jun. Research progress on catalysts for relay-catalysis of CO₂ to prepare high value-added chemicals [J]. Inorganic Chemicals Industry, 2024, 56(11): 81-94.
[10]	CHANG Chengbing, LIU Shengyu, ZHANG Lei, YANG Zhichao, GUO Jianying, LI Bao. Experimental study on carbon dioxide sequestration by wet carbonation of calcium silicate minerals [J]. Inorganic Chemicals Industry, 2023, 55(9): 57-65.
[11]	ZHAO Yan, HAO Xuewei, SHI Hainan, LI Jiahui, LI Keyan, GUO Xinwen. Study on photocatalytic CO₂reduction performance of Cu-doped TiO₂/PCN heterojunction [J]. Inorganic Chemicals Industry, 2023, 55(8): 21-27.
[12]	SONG Zhijia, WANG Suisui, KUANG Qin. Hollow Cu-doped TiO₂ for enhancing photocatalytic CO₂ reduction performance [J]. Inorganic Chemicals Industry, 2023, 55(8): 45-50.
[13]	GUI Changqing, WANG Yajing, LING Changjian, WANG Huaiyou, TANG Zhongfeng. Research progress of preparation and modification of MgO-based CO₂ adsorbents [J]. Inorganic Chemicals Industry, 2023, 55(8): 77-83.
[14]	REN Teng, LI Shengdong, WANG Dexi, CHU Fuzhou, SHAO Lixin. Numerical simulation analysis of influence of jet position on mixing effect of carbonization reactor [J]. Inorganic Chemicals Industry, 2023, 55(7): 109-114.
[15]	WANG Jianfang, YANG Heping, LI Kaibin, CONG Shiqiang, ZHANG Bojie, GUO Shan. Study on preparation of C₃N₄/MnCo₂S₄ composites and their capacitive properties [J]. Inorganic Chemicals Industry, 2023, 55(7): 70-74.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Process simulation of carbon dioxide capture from coal-firing flue gas by ethanolamine

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 13

Related Articles 15

Metrics

Comments

Recommended 0