BR0002891A - Processo para a preparação de ácido (met) acrìlico - Google Patents

Processo para a preparação de ácido (met) acrìlico

Info

Publication number
BR0002891A
BR0002891A BR0002891-6A BR0002891A BR0002891A BR 0002891 A BR0002891 A BR 0002891A BR 0002891 A BR0002891 A BR 0002891A BR 0002891 A BR0002891 A BR 0002891A
Authority
BR
Brazil
Prior art keywords
meth
preparation
acrylic acid
acrylic
acid
Prior art date
Application number
BR0002891-6A
Other languages
English (en)
Inventor
Chorng-Shyuan Tsay
Timothy Allen Hale
Robert Michael Mason
Josefina Tseng Chapman
James Clarence Day
Original Assignee
Rohm & Haas
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 Rohm & Haas filed Critical Rohm & Haas
Publication of BR0002891A publication Critical patent/BR0002891A/pt

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
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • 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
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • 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
    • C07C51/50—Use of additives, e.g. for stabilisation

Landscapes

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

Abstract

"PROCESSO PARA A PREPARAçãO DE áCIDO (MET)ACRìLICO". Esta invenção refere-se a um processo para a preparação de ácido (met)acrílico, sendo que é utilizada diminuição da intensidade de funcionamento para manter desempenho ótimo da coluna de destilação na desidratação de ácido (met)acrílico aquoso para fornecer uma solução de ácido (met)acrílico.
BR0002891-6A 1999-06-28 2000-06-27 Processo para a preparação de ácido (met) acrìlico BR0002891A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14153499P 1999-06-28 1999-06-28

Publications (1)

Publication Number Publication Date
BR0002891A true BR0002891A (pt) 2001-01-30

Family

ID=22496110

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0002891-6A BR0002891A (pt) 1999-06-28 2000-06-27 Processo para a preparação de ácido (met) acrìlico

Country Status (8)

Country Link
US (1) US6500982B1 (pt)
EP (1) EP1065197B1 (pt)
JP (1) JP2001031624A (pt)
KR (1) KR100679210B1 (pt)
CN (1) CN1221513C (pt)
BR (1) BR0002891A (pt)
DE (1) DE60000708T2 (pt)
TW (1) TWI264433B (pt)

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DE102008000787A1 (de) * 2008-03-20 2009-09-24 Evonik Röhm Gmbh Verfahren zur Aufreinigung von Methacrylsäure
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CN102405275B (zh) * 2009-04-20 2015-01-14 埃克森美孚上游研究公司 从烃气流中去除酸性气体的低温系统和去除酸性气体的方法
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MX363766B (es) 2013-12-06 2019-04-02 Exxonmobil Upstream Res Co Metodo y dispositivo para separar hidrocarburos y contaminantes con un mecanismo de calentamiento para desestabilizar y/o prevenir la adhesion de solidos.
WO2015084496A2 (en) 2013-12-06 2015-06-11 Exxonmobil Upstream Research Company Method and device for separating a feed stream using radiation detectors
MY183946A (en) 2013-12-06 2021-03-17 Exxonmobil Upstream Res Co Method and system of dehydrating a feed stream processed in a distillation tower
CA2924695C (en) 2013-12-06 2018-10-02 Exxonmobil Upstream Research Company Method and system for separating a feed stream with a feed stream distribution mechanism
CA2931409C (en) 2013-12-06 2017-08-01 Exxonmobil Upstream Research Company Method and device for separating hydrocarbons and contaminants with a spray assembly
US9752827B2 (en) 2013-12-06 2017-09-05 Exxonmobil Upstream Research Company Method and system of maintaining a liquid level in a distillation tower
US9874395B2 (en) 2013-12-06 2018-01-23 Exxonmobil Upstream Research Company Method and system for preventing accumulation of solids in a distillation tower
US9562719B2 (en) 2013-12-06 2017-02-07 Exxonmobil Upstream Research Company Method of removing solids by modifying a liquid level in a distillation tower
WO2015084499A2 (en) 2013-12-06 2015-06-11 Exxonmobil Upstream Research Company Method and system of modifying a liquid level during start-up operations
SG11201703031PA (en) 2014-10-14 2017-05-30 Ecolab Usa Inc Reducing polymer fouling and agglomeration in acrylate/methacrylate processes
CN107208964B (zh) 2015-02-27 2020-06-19 埃克森美孚上游研究公司 减少进入低温蒸馏过程的进料物流的冷冻和脱水负荷
RU2715559C2 (ru) 2015-03-18 2020-03-02 ЭКОЛАБ ЮЭсЭй ИНК. Применение стабильных липофильных соединений гидроксиламина для ингибирования полимеризации виниловых мономеров
US9957209B2 (en) 2015-03-31 2018-05-01 Ecolab Usa Inc. Use of quinone methides as antipolymerants for vinylic monomers
TWI624480B (zh) 2015-04-20 2018-05-21 藝康美國公司 供不飽和單體用作防污劑之受阻對苯二酚
US10766848B2 (en) * 2015-09-07 2020-09-08 Rhodia Operations Use of polymerization inhibitor compositions
WO2017048346A1 (en) 2015-09-18 2017-03-23 Exxonmobil Upstream Research Company Heating component to reduce solidification in a cryogenic distillation system
AU2016327820B2 (en) 2015-09-24 2019-08-01 Exxonmobil Upstream Research Company Treatment plant for hydrocarbon gas having variable contaminant levels
DE202015106097U1 (de) * 2015-11-11 2016-02-01 Holger Blum Fördereinrichtung für eine Vakuumdestillationsanlage
WO2017137348A1 (de) 2016-02-08 2017-08-17 Basf Se Polymerisationsinhibierte wässrige acrylsäurelösungen
US10323495B2 (en) 2016-03-30 2019-06-18 Exxonmobil Upstream Research Company Self-sourced reservoir fluid for enhanced oil recovery
CN108689833B (zh) * 2018-06-01 2021-03-16 安徽恒星制药有限公司 一种稳定的高纯度乳酸制备方法
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US11378332B2 (en) 2018-06-29 2022-07-05 Exxonmobil Upstream Research Company Mixing and heat integration of melt tray liquids in a cryogenic distillation tower

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JP3312566B2 (ja) * 1996-10-23 2002-08-12 住友化学工業株式会社 アクリル酸からの酢酸の分離方法
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Also Published As

Publication number Publication date
KR100679210B1 (ko) 2007-02-07
CN1221513C (zh) 2005-10-05
TWI264433B (en) 2006-10-21
JP2001031624A (ja) 2001-02-06
US6500982B1 (en) 2002-12-31
KR20010049654A (ko) 2001-06-15
DE60000708T2 (de) 2003-07-24
EP1065197B1 (en) 2002-11-06
CN1287113A (zh) 2001-03-14
DE60000708D1 (de) 2002-12-12
EP1065197A1 (en) 2001-01-03

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