SG11201808954RA - Method for purifying methacrylic acid and method for producing methacrylic acid - Google Patents

Method for purifying methacrylic acid and method for producing methacrylic acid

Info

Publication number
SG11201808954RA
SG11201808954RA SG11201808954RA SG11201808954RA SG11201808954RA SG 11201808954R A SG11201808954R A SG 11201808954RA SG 11201808954R A SG11201808954R A SG 11201808954RA SG 11201808954R A SG11201808954R A SG 11201808954RA SG 11201808954R A SG11201808954R A SG 11201808954RA
Authority
SG
Singapore
Prior art keywords
methacrylic acid
acid
methanol
purifying
producing
Prior art date
Application number
SG11201808954RA
Inventor
Koji Kanaya
Tomomichi Hino
Shinpei Kato
Takafumi Toyoda
Original Assignee
Mitsubishi Chem Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Chem Corp filed Critical Mitsubishi Chem Corp
Publication of SG11201808954RA publication Critical patent/SG11201808954RA/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0009—Crystallisation cooling by heat exchange by direct heat exchange with added cooling fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0077—Screening for crystallisation conditions or for crystal forms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C57/03—Monocarboxylic acids
    • C07C57/04—Acrylic acid; Methacrylic acid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D2009/0086—Processes or apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0063—Control or regulation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

method purifying acid, mixing material acid methanol; a of acid the solution; separating the crystal and mother liquor, wherein the raw material methacrylic acid and methanol are mixed so that a concentration of methanol in the mixed liquid is .0 to 3.75% by mass, and the crystal of methacrylic acid is precipitated from the mixed solution in a cooling crystallization vessel.
SG11201808954RA 2016-04-28 2017-04-25 Method for purifying methacrylic acid and method for producing methacrylic acid SG11201808954RA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016090892 2016-04-28
PCT/JP2017/016289 WO2017188220A1 (en) 2016-04-28 2017-04-25 Purification method and production method for methacrylic acid

Publications (1)

Publication Number Publication Date
SG11201808954RA true SG11201808954RA (en) 2018-11-29

Family

ID=60160483

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11201808954RA SG11201808954RA (en) 2016-04-28 2017-04-25 Method for purifying methacrylic acid and method for producing methacrylic acid

Country Status (6)

Country Link
US (1) US10442747B2 (en)
JP (2) JP6608927B2 (en)
KR (1) KR102157488B1 (en)
CN (1) CN109071402B (en)
SG (1) SG11201808954RA (en)
WO (1) WO2017188220A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240010598A1 (en) * 2020-09-11 2024-01-11 Nippon Shokubai Co., Ltd. Method for producing compound
WO2024049107A1 (en) * 2022-08-30 2024-03-07 주식회사 엘지화학 Method for preparation of high purity (meth)acrylic acid

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879412A (en) * 1985-03-14 1989-11-07 Mitsui Toatsu Chemicals, Inc. Purification process of methacrylic acid
JPH08134011A (en) * 1994-11-04 1996-05-28 Mitsui Toatsu Chem Inc Purification of methacrylic acid
MY120051A (en) * 1997-07-30 2005-08-30 Mitsubishi Rayon Co Process for purification of (meth)acrylic acid
DE19814449A1 (en) * 1998-03-31 1999-10-07 Basf Ag Process for the preparation of (meth) acrylic acid and (meth) acrylic acid esters
JP4651175B2 (en) 2000-10-11 2011-03-16 三菱レイヨン株式会社 Method for purifying methacrylic acid and method for producing methyl methacrylate
CN100374406C (en) * 2006-02-28 2008-03-12 上海华谊丙烯酸有限公司 Methylacrylic acid extracting and refining process
JP5336794B2 (en) * 2008-09-04 2013-11-06 三菱レイヨン株式会社 Purification method of raw material crude crystals
JP5394147B2 (en) * 2009-06-30 2014-01-22 三菱レイヨン株式会社 (Meth) acrylic acid purification method
JP5569108B2 (en) 2010-04-05 2014-08-13 三菱レイヨン株式会社 (Meth) acrylic acid purification method
JP5708257B2 (en) * 2011-05-30 2015-04-30 三菱レイヨン株式会社 Scraper unit for crystallization apparatus of methacrylic acid, crystallization apparatus and crystallization method
JP2012102129A (en) * 2012-01-05 2012-05-31 Mitsubishi Rayon Co Ltd Methacrylic acid purification method

Also Published As

Publication number Publication date
JP2019023239A (en) 2019-02-14
JP6608927B2 (en) 2019-11-20
KR102157488B1 (en) 2020-09-18
CN109071402A (en) 2018-12-21
KR20180136535A (en) 2018-12-24
WO2017188220A1 (en) 2017-11-02
US20190039987A1 (en) 2019-02-07
CN109071402B (en) 2021-10-15
JP6635176B2 (en) 2020-01-22
US10442747B2 (en) 2019-10-15
JPWO2017188220A1 (en) 2018-05-10

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