Optimal Design of Solvent Blend and Its Application in Coking Wastewater Treatment Process

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	Optimal Design of Solvent Blend and Its Application in Coking Wastewater Treatment Process
	Liao, Mingsen 1,2,3; Zhao, Yuehong 1; Ning, Pengge 1; Cao, Hongbin 1; Wen, Hao 1; Zhang, Yi 1,2
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2014-10-01
卷号	53 期号:39 页码:15071-15079
关键词	LIQUID-LIQUID-EXTRACTION AIDED MOLECULAR DESIGN METHYL ISOBUTYL KETONE PHENOL REMOVAL COAL OPTIMIZATION
ISSN号	0888-5885
其他题名	Ind. Eng. Chem. Res.
中文摘要	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.
英文摘要	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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	LIQUID-LIQUID-EXTRACTION ; AIDED MOLECULAR DESIGN ; METHYL ISOBUTYL KETONE ; PHENOL REMOVAL ; COAL ; OPTIMIZATION
收录类别	SCI
原文出处	://WOS:000342609000018
语种	英语
WOS记录号	WOS:000342609000018
公开日期	2014-12-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11679]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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
推荐引用方式 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.