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Optimal Design of Solvent Blend and Its Application in Coking Wastewater Treatment Process
Alternative TitleInd. Eng. Chem. Res.
Liao, Mingsen1,2,3; Zhao, Yuehong1; Ning, Pengge1; Cao, Hongbin1; Wen, Hao1; Zhang, Yi1,2
2014-10-01
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume53Issue:39Pages:15071-15079
AbstractOne of the key steps of coking wastewater treatment is phenolic and tar removal via extraction. However, the high loss of the extractant, i.e., methyl isobutyl ketone (MIBK), leads to the high cost of the process. The adoption of a novel solvent or solvent blend is considered as an efficient way to address this problem. In this paper, seven solvents (benzene, toluene, m-xylene, ethylbenzene, 1,3,5-trimethylbenze, cyclohexane, and octanol), selected as candidate diluters for MIBK according to operating requirements, are studied with a nonlinear programming (NLP) model based on ideal counter-current extraction. The results, verified with experiments, suggest toluene is the most promising candidate. Further investigation of this solvent blend reveals that both D-blend (the distribution coefficient of phenol between solvent blend and water) and m(MIBK) (the MIBK concentration in raffinate) increase with x(MIBK) (the molar fraction of MIBK in blend). The trade off between the extraction performance and MIBK loss recommends the blend with x(MIBK) = 0.05 as extractant for coking wastewater treatment. An industrial process consisting of extraction, back stripping, distillation, and mixer is presented. A corresponding NLP model is established for its operating optimization. To improve the accuracy, the representatives of typical phenolics and tar in wastewater (2,4 dimethyl phenol, m-xylene, and quinolone) are also considered in addition to phenol. The case study indicates that the blend exhibits economic advantage over pure MIBK with a makeup cost of 11.15 Y/t much less than the 185.15 Y/t in the case of MIBK.; One of the key steps of coking wastewater treatment is phenolic and tar removal via extraction. However, the high loss of the extractant, i.e., methyl isobutyl ketone (MIBK), leads to the high cost of the process. The adoption of a novel solvent or solvent blend is considered as an efficient way to address this problem. In this paper, seven solvents (benzene, toluene, m-xylene, ethylbenzene, 1,3,5-trimethylbenze, cyclohexane, and octanol), selected as candidate diluters for MIBK according to operating requirements, are studied with a nonlinear programming (NLP) model based on ideal counter-current extraction. The results, verified with experiments, suggest toluene is the most promising candidate. Further investigation of this solvent blend reveals that both D-blend (the distribution coefficient of phenol between solvent blend and water) and m(MIBK) (the MIBK concentration in raffinate) increase with x(MIBK) (the molar fraction of MIBK in blend). The trade off between the extraction performance and MIBK loss recommends the blend with x(MIBK) = 0.05 as extractant for coking wastewater treatment. An industrial process consisting of extraction, back stripping, distillation, and mixer is presented. A corresponding NLP model is established for its operating optimization. To improve the accuracy, the representatives of typical phenolics and tar in wastewater (2,4 dimethyl phenol, m-xylene, and quinolone) are also considered in addition to phenol. The case study indicates that the blend exhibits economic advantage over pure MIBK with a makeup cost of 11.15 Y/t much less than the 185.15 Y/t in the case of MIBK.
KeywordLiquid-liquid-extraction Aided Molecular Design Methyl Isobutyl Ketone Phenol Removal Coal Optimization
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ie5010898
URL查看原文
Indexed BySCI
Language英语
WOS KeywordLIQUID-LIQUID-EXTRACTION ; AIDED MOLECULAR DESIGN ; METHYL ISOBUTYL KETONE ; PHENOL REMOVAL ; COAL ; OPTIMIZATION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000342609000018
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11679
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
2.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
3.China Natl Engn Res Ctr Distillat Technol NERCDT, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Liao, Mingsen,Zhao, Yuehong,Ning, Pengge,et al. Optimal Design of Solvent Blend and Its Application in Coking Wastewater Treatment Process[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2014,53(39):15071-15079.
APA Liao, Mingsen,Zhao, Yuehong,Ning, Pengge,Cao, Hongbin,Wen, Hao,&Zhang, Yi.(2014).Optimal Design of Solvent Blend and Its Application in Coking Wastewater Treatment Process.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,53(39),15071-15079.
MLA Liao, Mingsen,et al."Optimal Design of Solvent Blend and Its Application in Coking Wastewater Treatment Process".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53.39(2014):15071-15079.
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