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Effect of SO2 on the amine-based CO2 capture solvent and improvement using ion exchange resins
Gao, Jubao1; Wang, Shujuan2; Wang, Jian1,3; Cao, Lingdi1,3; Tang, Shiwei1; Xia, Yu1
2015-06-01
Source PublicationINTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
ISSN1750-5836
Volume37Issue:JUNPages:38-45
Abstract

An amine-based CO2 capture solvent is developed to reduce energy requirement. Three campaigns, with 12 vol% CO2 and 18 vol% O-2, are conducted in a CO2 capture pilot plant to evaluate energy consumption and influence of SO2 on solvent characteristics, under the condition of prolonged operation. Monoethanolamine (MEA) is used in one campaign, and the other two campaigns employed new solvent, with and without 200 ppm SO2 in the simulated flue gas. The lost of free amine, including CO2 combines with amine (CCA), SO2 combines with amine (SCA) and amine degradation (AD), is analyzed. Experimental results show that the average energy consumption of MEA and novel absorbent is about 4.09 GJ/tCO(2) and 2.96 GACO(2), respectively. This value climbs to 3.51 GJ/tCO(2) for novel absorbent, with 200 ppm SO2. Meanwhile, the pH is reduced, the viscosity increases and free amine is lost more, which reduces the overall CO2 reaction rate and the overall mass transfer coefficient. The presence of SO2 increases SCA and AD, and decreases CCA. The SCA becomes main factor after running 200 h. An industrial strong-alkaline anion exchange resin through several runs is used to decrease the SCA and improve the solvent characteristics. The heat stable salts (HSS), including formate, oxalate, glycolate, sulfite and sulfate, can be reduced to less than 1 wt% by using the ion exchange resin. The solvent viscosity after treatment is only one tenth of the original solvent at 313 K. The overall mass transfer coefficient KG after treatment is about 1.7 times that without treatment. (C) 2015 Elsevier Ltd. All rights reserved.

KeywordCarbon Dioxide Sulfur Dioxide Pilot Plant Heat Stable Salts Ion Exchange Resin Energy Consumption
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ijggc.2015.03.001
Indexed BySCI
Language英语
WOS KeywordSTRIPPER OPERATING PARAMETERS ; AQUEOUS POTASSIUM CARBONATE ; PILOT-SCALE ; ABSORPTION SYSTEMS ; DIOXIDE ABSORPTION ; POWER-PLANTS ; POSTCOMBUSTION ; TECHNOLOGY ; PERFORMANCE ; SOLUBILITY
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Environmental
WOS IDWOS:000357146500004
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19321
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Beijing Key Lab Ion Liq, Beijing 100190, Peoples R China
2.Tsinghua Univ, Dept Thermal Engn, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Gao, Jubao,Wang, Shujuan,Wang, Jian,et al. Effect of SO2 on the amine-based CO2 capture solvent and improvement using ion exchange resins[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2015,37(JUN):38-45.
APA Gao, Jubao,Wang, Shujuan,Wang, Jian,Cao, Lingdi,Tang, Shiwei,&Xia, Yu.(2015).Effect of SO2 on the amine-based CO2 capture solvent and improvement using ion exchange resins.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,37(JUN),38-45.
MLA Gao, Jubao,et al."Effect of SO2 on the amine-based CO2 capture solvent and improvement using ion exchange resins".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 37.JUN(2015):38-45.
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