Synthesis of High-Purity Methylal via Extractive Catalytic Distillation
Liu, HZ (Liu, Hongzhong); Gao, HY (Gao, Hongyan); Ma, YB (Ma, Yubo); Gao, ZX (Gao, Zhixian); Eli, WMJ (Eli, Wumanjiang)[
2012
Source PublicationCHEMICAL ENGINEERING & TECHNOLOGY
ISSN9307516
Volume35Issue:5Pages:841-846
AbstractAn integrated continuous process, which combines catalytic distillation and extractive distillation in one column, is investigated for the synthesis of high-purity methylal from methanol and formalin in the presence of a cation-exchange resin catalyst. A feed with methanol:formaldehyde 2:1 molar ratio is chosen to evaluate the effects of operating parameters, such as extractant feeding position, ratio of extractant to feed, reflux ratio, and reboiler temperature, on the continuous synthesis of methylal. Under the optimum operating conditions and with water as extractant, the extractive catalytic distillation process operated continuously, producing a methylal purity of 98.7% (H2O: <1.30%) with 98.0% formaldehyde conversion. An integrated continuous process combining catalytic distillation and extractive distillation in one column is applied for high-purity methylal synthesis from methanol and formalin in the presence of a cation-exchange resin catalyst. Under optimum conditions, using water as extractant, the extractive catalytic distillation process provided a methylal purity of 98.7% with 98.0% formaldehyde conversion. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KeywordCation-exchange Resin Extractive Catalytic Distillation Formalin Methanol Methylal
Subject AreaEngineering
DOI10.1002/ceat.201100446
WOS IDWOS:000303117700012
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/1389
Collection新疆维吾尔自治区精细化工工程技术研究中心
AffiliationChinese Acad Sci, Shanxi Inst Coal Chem, Taiyuan 030001, Shanxi, Peoples R China;Yili Normal Univ, Yining, Peoples R China;Chinese Acad Sci, Grad Univ, Beijing, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Xinjiang, Peoples R China
Recommended Citation
GB/T 7714
Liu, HZ ,Gao, HY ,Ma, YB ,et al. Synthesis of High-Purity Methylal via Extractive Catalytic Distillation[J]. CHEMICAL ENGINEERING & TECHNOLOGY,2012,35(5):841-846.
APA Liu, HZ ,Gao, HY ,Ma, YB ,Gao, ZX ,&Eli, WMJ .(2012).Synthesis of High-Purity Methylal via Extractive Catalytic Distillation.CHEMICAL ENGINEERING & TECHNOLOGY,35(5),841-846.
MLA Liu, HZ ,et al."Synthesis of High-Purity Methylal via Extractive Catalytic Distillation".CHEMICAL ENGINEERING & TECHNOLOGY 35.5(2012):841-846.
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