Concentration of aqueous organic solution

Abstract

PURPOSE: To separate azeotropic organic components easily and at low cost by a system in which an azeotropic mixture solution is separated through the first liquid evaporation process, the second separation process using a gas separation membrane and the third distillation process of gas mixtures containing a high percentage of water vapor in that sequential order. CONSTITUTION: Ethanol solution is evaporated by the first evaporator 1. The gas mixture consisting of evaporated ethanol vapor/water vapor thus obtained is heated to 130°C by a superheater 3, and this heated gas mixture is supplied to the primary side of a gas separation membrane 4 from a line C. Then, the secondary side of said membrane is decompressed, and the permeating mixed gas is supplied to the second evaporator 5 from a line E. An effluent mixed gas from the top of the evaporator is condensed by a cooler 6 through a line F, and the condensed product is returned to the first evaporator 1 through lines G, L. The non-permeating ethanol vapor in the membrane is recovered through a line D, while water is recovered from the bottom of the second evaporator through lines H, K. Vapor separation becomes feasible because of the vapor supplied instead of an aqueous organic solution for separation by the membrane. Separation of organic mixture is easy because it is supplied to the membrane is the state not liquid but gas. COPYRIGHT: (C)1988,JPO&Japio

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (15)

    Publication numberPublication dateAssigneeTitle
    EP-2247370-A1November 10, 2010St1 Biofuels OyMethod and apparatus for dewatering a mixture of ethanol and water
    EP-2247370-A4July 25, 2012St1 Biofuels OyMethod and apparatus for dewatering a mixture of ethanol and water
    JP-2011050860-AMarch 17, 2011Hitachi Zosen Corp, 日立造船株式会社含水有機物の無水化方法
    JP-2011502960-AJanuary 27, 2011エプコン・エナジー・アンド・プロセス・コントロール・アーエスEpcon Energy & Process Control As主にエタノール及び水の混合物を脱水するための方法
    JP-2011513056-AApril 28, 2011エステー1・バイオフューエルズ・オサケユキテュアSt1 Biofuels Oyエタノールおよび水の混合物を脱水するための方法および装置
    JP-4794695-B1October 19, 2011原 拓也, 史郎 長友精製液生成方法及び精製液生成装置
    JP-H01155928-AJune 19, 1989Hitachi Zosen CorpConcentration and dehydration device for organic substance-water mixed solution
    JP-H04187212-AJuly 03, 1992Ube Ind LtdSeparation of organic matter-water mixed vapor by membrane
    JP-H08506513-AJuly 16, 1996ハーテーエム シュポルト− ウント フライツァイトゲレーテ アクチエンゲゼルシャフトスキー靴
    US-7594981-B2September 29, 2009Mitsubishi Chemical CorporationMethod for concentrating water-soluble organic material
    US-8608966-B2December 17, 2013St1 Biofuels OyMethod and apparatus for dewatering a mixture of ethanol and water
    US-9205381-B2December 08, 2015Hitachi Zosen CorporationMethod for dewatering water-containing organic substance
    US-9765024-B2September 19, 2017Organo CorporationSystem and method for organic solvent purification
    WO-2011027787-A1March 10, 2011日立造船株式会社含水有機物の無水化方法
    WO-2016017491-A1February 04, 2016オルガノ株式会社Système et procédé de purification de solvant organique