AU2001231149A1 - Process control for acetic acid manufacture - Google Patents

Process control for acetic acid manufacture

Info

Publication number
AU2001231149A1
AU2001231149A1 AU2001231149A AU3114901A AU2001231149A1 AU 2001231149 A1 AU2001231149 A1 AU 2001231149A1 AU 2001231149 A AU2001231149 A AU 2001231149A AU 3114901 A AU3114901 A AU 3114901A AU 2001231149 A1 AU2001231149 A1 AU 2001231149A1
Authority
AU
Australia
Prior art keywords
acetic acid
process control
acid manufacture
manufacture
control
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2001231149A
Inventor
Noel Hallinan
James A. Hinnenkamp
Javan Shelly
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Millennium Petrochemicals Inc
Original Assignee
Millennium Petrochemicals Inc
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
Priority claimed from US09/611,067 external-priority patent/US6362366B1/en
Application filed by Millennium Petrochemicals Inc filed Critical Millennium Petrochemicals Inc
Publication of AU2001231149A1 publication Critical patent/AU2001231149A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/128—Infra-red light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/10—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide
    • C07C51/12—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction with carbon monoxide on an oxygen-containing group in organic compounds, e.g. alcohols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00628—Controlling the composition of the reactive mixture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00058—Temperature measurement
    • B01J2219/00063—Temperature measurement of the reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00069—Flow rate measurement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00139—Controlling the temperature using electromagnetic heating
    • B01J2219/00146—Infrared radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00182—Controlling or regulating processes controlling the level of reactants in the reactor vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00186—Controlling or regulating processes controlling the composition of the reactive mixture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00191—Control algorithm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00191—Control algorithm
    • B01J2219/00193—Sensing a parameter
    • B01J2219/00195—Sensing a parameter of the reaction system
    • B01J2219/00202—Sensing a parameter of the reaction system at the reactor outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00191—Control algorithm
    • B01J2219/00222—Control algorithm taking actions
    • B01J2219/00227—Control algorithm taking actions modifying the operating conditions
    • B01J2219/00229—Control algorithm taking actions modifying the operating conditions of the reaction system
    • B01J2219/00231—Control algorithm taking actions modifying the operating conditions of the reaction system at the reactor inlet

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
AU2001231149A 2000-07-06 2001-01-25 Process control for acetic acid manufacture Abandoned AU2001231149A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US09/611,067 US6362366B1 (en) 1998-12-18 2000-07-06 Manufacturing and process control methods
US09611067 2000-07-06
US09672893 2000-09-29
US09/672,893 US6552221B1 (en) 1998-12-18 2000-09-29 Process control for acetic acid manufacture
PCT/US2001/002489 WO2002004394A1 (en) 2000-07-06 2001-01-25 Process control for acetic acid manufacture

Publications (1)

Publication Number Publication Date
AU2001231149A1 true AU2001231149A1 (en) 2002-01-21

Family

ID=27086430

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001231149A Abandoned AU2001231149A1 (en) 2000-07-06 2001-01-25 Process control for acetic acid manufacture

Country Status (7)

Country Link
US (1) US6552221B1 (en)
EP (1) EP1299338A1 (en)
JP (1) JP2004502747A (en)
CN (1) CN1244533C (en)
AU (1) AU2001231149A1 (en)
TW (1) TWI233926B (en)
WO (1) WO2002004394A1 (en)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826960B1 (en) * 2001-07-03 2005-10-21 Acetex Chimie METHOD FOR CONTROLLING CONTINUOUS PRODUCTION OF ACETIC ACID AND / OR METHYL ACETATE
US6677480B2 (en) 2002-01-28 2004-01-13 Celanese International Corporation Process control in production of acetic acid via use of heavy phase density measurement
DE10322439A1 (en) * 2003-05-19 2004-12-09 Bayer Ag Method and device for determining the isomer composition in isocyanate production processes
CN1309872C (en) * 2003-12-15 2007-04-11 方珂 Process and apparatus for production of acetic acid through electrolysis method
US7271293B2 (en) * 2004-03-02 2007-09-18 Celanese International Corporation Control method for process of removing permanganate reducing compounds from methanol carbonylation process
US20060228292A1 (en) * 2005-04-11 2006-10-12 Cronin James T Process for purifying titanium chloride-containing feedstock
EP1996910A2 (en) * 2006-02-22 2008-12-03 Vivum Nexus LLC Method and device for analyte measurement
TWI465424B (en) * 2006-03-21 2014-12-21 Bp Chem Int Ltd Process for the production of acetic acid
CN100450988C (en) * 2006-06-19 2009-01-14 上海吴泾化工有限公司 Low pressure device for synthesizing acetic acid by methanol carbonylation
US7790919B2 (en) * 2008-03-17 2010-09-07 Lyondell Chemical Technology, L.P. Removing hydrocarbon impurities from acetic acid production process
US7820855B2 (en) 2008-04-29 2010-10-26 Celanese International Corporation Method and apparatus for carbonylating methanol with acetic acid enriched flash stream
US7790920B2 (en) * 2008-09-11 2010-09-07 Lyondell Chemical Technology, L.P. Preparation of acetic acid
US8076508B2 (en) * 2008-12-08 2011-12-13 Lyondell Chemical Technology Preparation of acetic acid
US8431740B2 (en) * 2010-07-21 2013-04-30 Equistar Chemicals, Lp Controlling decanter phase separation of acetic acid production process
US8519182B2 (en) * 2010-10-18 2013-08-27 Lyondell Chemical Technology, L.P. Acetic acid production process
GB201019360D0 (en) 2010-11-16 2010-12-29 Care Monitoring 2000 Ltd Reverse look up monitoring system
US8822717B2 (en) 2010-11-24 2014-09-02 LyondellBassell Acetyls, LLC Vinyl acetate production process
US8629298B2 (en) * 2011-02-28 2014-01-14 Lyondell Chemical Technology, L.P. Acetic acid production process
US8637699B2 (en) 2011-04-15 2014-01-28 Lyondell Chemical Technology, L.P. Process for the manufacture of acetic acid
US8399700B2 (en) 2011-04-15 2013-03-19 Lyondell Chemical Technology, L.P. Vinyl acetate production process
US8742168B2 (en) 2011-05-31 2014-06-03 Lyondell Chemical Technology, L.P. Process for the production of acetic acid
US9090554B2 (en) * 2011-12-21 2015-07-28 Lyondellbasell Acetyls, Llc Process for the manufacture of acetic acid
US9051258B2 (en) 2011-12-21 2015-06-09 Lyondellbasell Acetyls, Llc Process for the manufacture of acetic acid
CN103217395A (en) * 2012-01-19 2013-07-24 库特勒自动化系统(苏州)有限公司 System for online control of concentration of chemical solution, and method thereof
GB2504650A (en) 2012-05-14 2014-02-12 Care Monitoring 2000 Ltd Monitoring incoming telephone calls to identify the location of a caller / person being visited by the caller corresponding to the detected called number
US9102612B2 (en) 2012-06-25 2015-08-11 Lyondellbasell Acetyls, Llc Process for the production of acetic acid
US8969613B2 (en) 2012-10-31 2015-03-03 Lyondellbasell Acetyls, Llc Removal of aldehydes in acetic acid production
US10668408B2 (en) 2012-11-30 2020-06-02 Suncor Energy Inc Measurement and control of bitumen-containing process streams
CN103063504B (en) * 2012-12-26 2015-06-03 中联环有限公司 Separation device and separation method for dissolved gas in water
SG11201606107TA (en) 2014-02-28 2016-08-30 Lyondellbasell Acetyls Llc Acetic acid production process
US9475746B2 (en) 2014-09-22 2016-10-25 Lyondellbasell Acetyls, Llc Catalyst stability and corrosion prevention in acetic acid production process
ES2773602T3 (en) * 2014-11-14 2020-07-13 Celanese Int Corp Instant vaporization procedure of a reaction medium comprising lithium acetate
SG11201703380PA (en) * 2014-11-14 2017-05-30 Celanese Int Corp Processes for producing acetic acid with decanter control
CA2969910C (en) 2014-12-12 2018-05-01 Lyondellbasell Acetyls, Llc Improved water control in acetic acid production processes
US9512056B2 (en) * 2015-02-04 2016-12-06 Celanese International Corporation Process to control HI concentration in residuum stream
US9540303B2 (en) 2015-04-01 2017-01-10 Celanese International Corporation Processes for producing acetic acid
US9302974B1 (en) * 2015-07-01 2016-04-05 Celanese International Corporation Process for producing acetic acid
US9382186B1 (en) 2015-07-01 2016-07-05 Celanese International Corporation Process for producing acetic acid
KR102438920B1 (en) * 2015-10-02 2022-08-31 셀라니즈 인터내셔날 코포레이션 How to produce acetic acid with water recycling
US9908835B2 (en) * 2015-11-13 2018-03-06 Celanese International Corporation Processes for purifying acetic and hydrating anhydride
WO2017091330A1 (en) 2015-11-25 2017-06-01 Lyondellbasell Acetyls, Llc Additives for carboxylic acid production processes
CN108290816B (en) 2015-12-03 2019-09-13 利安德巴塞尔乙酰有限责任公司 To the selective removal of impurity in acetic acid preparation process
US9908833B2 (en) 2015-12-03 2018-03-06 Lyondellbasell Acetyls, Llc Removal of aldehydes in acetic acid production processes
CN105628810B (en) * 2015-12-26 2017-06-06 中国科学院福建物质结构研究所 A kind of seizure heterogeneous catalytic reaction intermediate product device and its application method in situ
CN106365977A (en) * 2016-11-15 2017-02-01 广西新天德能源有限公司 Wear-resistant anticorrosion acetic acid production device
US10227283B2 (en) 2017-06-30 2019-03-12 Lyondellbasell Acetyls, Llc Reaction control in acetic acid processes
CN111918857A (en) 2018-03-23 2020-11-10 利安德巴塞尔乙酰有限责任公司 Improved process for the purification of Glacial Acetic Acid (GAA)
WO2019183549A1 (en) 2018-03-23 2019-09-26 Lyondellbasell Acetyls, Llc Removal of permanganate reducing compounds from intermediate gaa process streams
US10807935B2 (en) 2018-11-02 2020-10-20 Celanese International Corporation Process for continuous acetic acid production
EP3711852A1 (en) 2019-03-21 2020-09-23 Covestro Deutschland AG Method and apparatus for quantitative monitoring of the composition of a oligomer/monomer mixture
CN111643915B (en) * 2019-09-10 2021-09-10 上海浦景化工技术股份有限公司 Rectification device and rectification method for oxo-synthesis of acetic acid
EP4313928A1 (en) 2021-04-02 2024-02-07 LyondellBasell Acetyls, LLC Methods and systems for producing acetic acid
WO2023137005A1 (en) 2022-01-11 2023-07-20 Lyondellbasell Acetyls, Llc Removal of aldehydes in acetic acid production
WO2023154545A1 (en) 2022-02-14 2023-08-17 Lyondellbasell Acetyls, Llc Removal of aldehydes in acetic acid production
US20230265036A1 (en) 2022-02-18 2023-08-24 Lyondellbasell Acetyls, Llc Removal of aldehydes in acetic acid production
US20230375478A1 (en) 2022-05-19 2023-11-23 Lyondellbasell Acetyls, Llc Methods for improved control of glacial acetic acid processes

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE791577A (en) 1971-11-19 1973-05-17 Monsanto Co Purification of carboxylic acid streams
US4000170A (en) 1974-07-29 1976-12-28 Monsanto Company Production of carboxylic acids by controlling the active form of iridium catalyst in response to infrared absorption spectra
US4102922A (en) 1974-12-30 1978-07-25 Monsanto Company Purification of carbonylation products
US4029553A (en) 1975-07-28 1977-06-14 Monsanto Company Purification of acetic acid streams by distillation
US4039395A (en) 1975-08-11 1977-08-02 Monsanto Company Purification of acetic acid
US4627008A (en) 1984-04-25 1986-12-02 Trebor Industries, Inc. Optical quantitative analysis using curvilinear interpolation
US5121337A (en) 1990-10-15 1992-06-09 Exxon Research And Engineering Company Method for correcting spectral data for data due to the spectral measurement process itself and estimating unknown property and/or composition data of a sample using such method
AU8790391A (en) 1990-11-19 1992-05-21 Hoechst Celanese Corporation Removal of carbonyl impurities from a carbonylation process stream
AU639630B2 (en) 1991-01-28 1993-07-29 Celanese International Corporation Removal of carbonyl impurities from carbonylation process stream
US5296843A (en) 1991-03-28 1994-03-22 Sd Laboratories, Inc. Fluid or vapor diagnostic device
GB9120902D0 (en) 1991-10-02 1991-11-13 Bp Chem Int Ltd Purification process
US5468961A (en) 1991-10-08 1995-11-21 Fisher & Paykel Limited Infrared gas analyser and humidity sensor
US5317379A (en) 1992-02-11 1994-05-31 Rosemount Analytical Inc. Chemical species optical analyzer with multiple fiber channels
GB9211671D0 (en) 1992-06-02 1992-07-15 Bp Chem Int Ltd Process
GB9306409D0 (en) 1993-03-26 1993-05-19 Bp Chem Int Ltd Process
FR2714306B1 (en) 1993-12-29 1996-09-27 Rhone Poulenc Chimie Process for the preparation of an iridium-based solution and its use as a catalyst.
US5596992A (en) 1993-06-30 1997-01-28 Sandia Corporation Multivariate classification of infrared spectra of cell and tissue samples
US5352415A (en) 1993-09-29 1994-10-04 Hoechst Celanese Corporation Control system for acetic acid manufacturing process
US5374774A (en) 1994-03-11 1994-12-20 Hoechst Celanese Corporation Control system for an acetic acid manufacturing process
KR100371761B1 (en) 1994-05-13 2003-05-22 빠르디에 아세띠끄스 Method for the preparation of carboxylic acids or corresponding esters in the presence of a soluble iridium-based catalyst
US5625095A (en) * 1994-06-15 1997-04-29 Daicel Chemical Industries, Ltd. Process for producing high purity acetic acid
JP3332594B2 (en) 1994-08-12 2002-10-07 ダイセル化学工業株式会社 Acetic acid purification method
US5604132A (en) 1995-01-23 1997-02-18 Olin Corporation Process flow injection analyzer and method
JPH08266802A (en) * 1995-03-30 1996-10-15 Asahi Chem Ind Co Ltd Distillation column control method by near infrared rays
US5599976A (en) 1995-04-07 1997-02-04 Hoechst Celanese Corporation Recovery of acetic acid from dilute aqueous streams formed during a carbonylation process
WO1996033965A1 (en) 1995-04-27 1996-10-31 Daicel Chemical Industries, Ltd. Process for producing acetic acid
JPH08301793A (en) * 1995-05-01 1996-11-19 Asahi Chem Ind Co Ltd Reaction control with near-infrared rays
US5783731A (en) 1995-09-11 1998-07-21 Hoechst Celanese Corporation Removal of carbonyl impurities from a carbonylation process stream
US5817869A (en) 1995-10-03 1998-10-06 Quantum Chemical Corporation Use of pentavalent Group VA oxides in acetic acid processing
IN192600B (en) 1996-10-18 2004-05-08 Hoechst Celanese Corp
US5831120A (en) 1996-11-19 1998-11-03 Watson; Derrick John Process for the production of acetic acid
GB9625335D0 (en) 1996-12-05 1997-01-22 Bp Chem Int Ltd Process
GB9626428D0 (en) 1996-12-19 1997-02-05 Bp Chem Int Ltd Process
GB9626429D0 (en) 1996-12-19 1997-02-05 Bp Chem Int Ltd Process
JP4026794B2 (en) * 1998-09-03 2007-12-26 出光興産株式会社 Analysis method of physical properties of hydrocarbons by near infrared spectroscopy
GB9819079D0 (en) 1998-09-03 1998-10-28 Bp Chem Int Ltd Carbonylation process
JP4385433B2 (en) * 1998-09-04 2009-12-16 三井化学株式会社 Manufacturing operation control method by near infrared analysis
GB9819606D0 (en) 1998-09-08 1998-11-04 Bp Chem Int Ltd Carbonylation process
JP2000167303A (en) 1998-12-08 2000-06-20 Yokogawa Electric Corp Process control device
US6103934A (en) * 1998-12-18 2000-08-15 Millennium Petrochemicals, Inc. Manufacturing and process control methods

Also Published As

Publication number Publication date
TWI233926B (en) 2005-06-11
JP2004502747A (en) 2004-01-29
US6552221B1 (en) 2003-04-22
CN1244533C (en) 2006-03-08
EP1299338A1 (en) 2003-04-09
CN1449369A (en) 2003-10-15
WO2002004394A1 (en) 2002-01-17

Similar Documents

Publication Publication Date Title
AU2001231149A1 (en) Process control for acetic acid manufacture
AU2002214225A1 (en) Process control for micro-lithography
AU2001284514A1 (en) Process for producing ester
AU5428500A (en) Process for producing polyhydroxycarboxylic acid
AU5707000A (en) Process for producing l-amino acid
AU2001250363A1 (en) Method for producing maleic acid anhydride
AU2001277545A1 (en) Process for the production of 2-hydroxy-4-methylmercaptobutyric acid
AU2001227086A1 (en) Process for preparing 2-hydroxy-4-methylthiobutanoic acid
AU5707300A (en) Process for producing l-amino acid
AU3703199A (en) Process for production of acetic acid
AU2324000A (en) Process for producing 2-hydroxy-4-methyl-thiobutanoic acid
AU2001291313A1 (en) Process for making 3-amino-2-chloro-4-methylpyridine
AU2002210547A1 (en) Method for producing acetic acid
AU6524200A (en) Process for purifying polycarboxylic acids
AU5707100A (en) Process for producing l-amino acid
AU5571100A (en) Process for producing l-amino acid
AU2001244122A1 (en) Process for preparing piperazic acid derivatives thereof
AU2001269501A1 (en) Process for producing 2-hydroxy-4-methylthiobutanoic acid
AU2001226654A1 (en) Process for preparing esters
AU2001234159A1 (en) Process for producing quinolonecarboxylic acids and intermediates thereof
AU5707200A (en) Process for producing l-amino acid
AU2558701A (en) Process for the preparation of a carboxylic acid derivative
AU7956300A (en) Process for producing esters
AU2001284442A1 (en) Process for producing fluoroalkanol
AUPR144100A0 (en) Process for can manufacture