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MX9704055A - Procedimiento de separacion de paraxileno que comprende cuando menos dos etapas de cristalizacion a alta temperatura. - Google Patents

Procedimiento de separacion de paraxileno que comprende cuando menos dos etapas de cristalizacion a alta temperatura.

Info

Publication number
MX9704055A
MX9704055A MX9704055A MX9704055A MX9704055A MX 9704055 A MX9704055 A MX 9704055A MX 9704055 A MX9704055 A MX 9704055A MX 9704055 A MX9704055 A MX 9704055A MX 9704055 A MX9704055 A MX 9704055A
Authority
MX
Mexico
Prior art keywords
paraxylene
zone
temperature crystallization
high temperature
crystallization
Prior art date
Application number
MX9704055A
Other languages
English (en)
Other versions
MXPA97004055A (es
Inventor
Paul Mikitenko
Stuart R Macpherson
Original Assignee
Inst Francais Du Petrole
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 Inst Francais Du Petrole filed Critical Inst Francais Du Petrole
Publication of MXPA97004055A publication Critical patent/MXPA97004055A/es
Publication of MX9704055A publication Critical patent/MX9704055A/es

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/14—Purification; Separation; Use of additives by crystallisation; Purification or separation of the crystals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

La presente invencion se refiere a un procedimiento de produccion de paraxileno de muy alta pureza a partir de una carga que contiene una mezcla de hidrocarburos aromáticos de 7 a 9 átomos de carbono, en el cual se hace circular cuando menos una parte de la carga en una zona adaptada para enriquecer una primera fraccion de paraxileno y se purifica cuando menos una parte de la primera fraccion mediante cuando menos una cristalizacion a alta temperatura en cuando menos una zona de cristalizacion, estando el procedimiento caracterizado porque se cristaliza la primera fraccion enriquecida de paraxileno en una zona de cristalizacion que comprende cuando menos dos etapas (50.70) de cristalizacion a alta temperatura, ventajosamente entre +10 y -25°C. La zona de enriquecimiento de paraxileno puede ser una cristalizacion a temperatura muy baja, una adsorcion selectiva o una zona de dismutacion de tolueno.
MX9704055A 1994-12-29 1995-12-27 Procedimiento de separacion de paraxileno que comprende cuando menos dos etapas de cristalizacion a alta temperatura. MX9704055A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9415897 1994-12-29
FR94/15897 1994-12-29
FR9415897A FR2728894A1 (fr) 1994-12-29 1994-12-29 Procede de separation de paraxylene comportant au moins deux etages de cristallisation a haute temperature
PCT/FR1995/001739 WO1996020908A1 (fr) 1994-12-29 1995-12-27 Procede de separation de paraxylene comportant au moins deux etages de cristallisation a haute temperature

Publications (2)

Publication Number Publication Date
MXPA97004055A MXPA97004055A (es) 1997-08-01
MX9704055A true MX9704055A (es) 1997-08-30

Family

ID=9470435

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9704055A MX9704055A (es) 1994-12-29 1995-12-27 Procedimiento de separacion de paraxileno que comprende cuando menos dos etapas de cristalizacion a alta temperatura.

Country Status (17)

Country Link
US (1) US6147272A (es)
EP (1) EP0800499B1 (es)
JP (1) JP3955998B2 (es)
KR (1) KR100357003B1 (es)
CN (1) CN1055283C (es)
AR (1) AR000586A1 (es)
AU (1) AU708254B2 (es)
CA (1) CA2208984C (es)
DE (1) DE69523946T2 (es)
ES (1) ES2169165T3 (es)
FR (1) FR2728894A1 (es)
MX (1) MX9704055A (es)
MY (1) MY113859A (es)
PL (1) PL184646B1 (es)
SA (1) SA96160510B1 (es)
TW (1) TW307745B (es)
WO (1) WO1996020908A1 (es)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6663780B2 (en) * 1993-01-26 2003-12-16 Danisco Finland Oy Method for the fractionation of molasses
FR2729660A1 (fr) 1995-01-20 1996-07-26 Inst Francais Du Petrole Procede de production de paraxylene comportant une cristallisation a haute temperature a au moins un etage et une fusion partielle des cristaux
FR2730728B1 (fr) 1995-02-21 1997-05-23 Inst Francais Du Petrole Procede de separation du p-xylene comportant un pretraitement par hydrogenation selective et par de la terre activee
FR2757507B1 (fr) * 1996-12-20 1999-01-29 Inst Francais Du Petrole Procede de separation de paraxylene comprenant une adsorption avec injection d'eau et une cristallisation
FR2764521B1 (fr) * 1997-06-16 1999-07-16 Inst Francais Du Petrole Dispositif de cristallisation par detente isentropique et son utilisation
US6336334B1 (en) 1997-06-16 2002-01-08 Institut Francais De Petrole Device for crystallization by isentropic expansion and its use
US6004452A (en) * 1997-11-14 1999-12-21 Chevron Chemical Company Llc Process for converting hydrocarbon feed to high purity benzene and high purity paraxylene
US6957233B1 (en) 1999-12-07 2005-10-18 Microsoft Corporation Method and apparatus for capturing and rendering annotations for non-modifiable electronic content
US7458014B1 (en) 1999-12-07 2008-11-25 Microsoft Corporation Computer user interface architecture wherein both content and user interface are composed of documents with links
US6820111B1 (en) 1999-12-07 2004-11-16 Microsoft Corporation Computer user interface architecture that saves a user's non-linear navigation history and intelligently maintains that history
US6714214B1 (en) 1999-12-07 2004-03-30 Microsoft Corporation System method and user interface for active reading of electronic content
US7337389B1 (en) 1999-12-07 2008-02-26 Microsoft Corporation System and method for annotating an electronic document independently of its content
US7028267B1 (en) 1999-12-07 2006-04-11 Microsoft Corporation Method and apparatus for capturing and rendering text annotations for non-modifiable electronic content
US9424240B2 (en) 1999-12-07 2016-08-23 Microsoft Technology Licensing, Llc Annotations for electronic content
US6992687B1 (en) 1999-12-07 2006-01-31 Microsoft Corporation Bookmarking and placemarking a displayed document in a computer system
US7185274B1 (en) 1999-12-07 2007-02-27 Microsoft Corporation Computer user interface architecture wherein users interact with both content and user interface by activating links
US7243299B1 (en) 2000-04-21 2007-07-10 Microsoft Corporation Methods and apparatus for displaying multiple contexts in electronic documents
US7259753B2 (en) 2000-06-21 2007-08-21 Microsoft Corporation Classifying, anchoring, and transforming ink
US7397949B2 (en) 2000-06-21 2008-07-08 Microsoft Corporation Serial storage of ink and its properties
US7006711B2 (en) 2000-06-21 2006-02-28 Microsoft Corporation Transform table for ink sizing and compression
US7234108B1 (en) 2000-06-29 2007-06-19 Microsoft Corporation Ink thickness rendering for electronic annotations
TWI240716B (en) 2000-07-10 2005-10-01 Bp Corp North America Inc Pressure swing adsorption process for separating paraxylene and ethylbenzene from mixed C8 aromatics
US6891551B2 (en) 2000-11-10 2005-05-10 Microsoft Corporation Selection handles in editing electronic documents
US7002558B2 (en) 2000-12-21 2006-02-21 Microsoft Corporation Mode hinting and switching
US6565653B2 (en) 2001-05-08 2003-05-20 Bp Corporation North America Inc. Energy efficient process for producing high purity paraxylene
US7343053B2 (en) 2001-06-27 2008-03-11 Microsoft Corporation Transform table for ink sizing and compression
US7271305B2 (en) * 2003-05-01 2007-09-18 Bp Corporation North America Inc. Method of obtaining para-xylene
US7122496B2 (en) * 2003-05-01 2006-10-17 Bp Corporation North America Inc. Para-xylene selective adsorbent compositions and methods
FR2862638B1 (fr) * 2003-11-26 2005-12-30 Inst Francais Du Petrole Procede de production de paraxylene comprenant une etape d'adsorption et deux etapes d'isomerisation
US7381858B2 (en) * 2004-01-30 2008-06-03 Bp Corporation North America Inc. Xylene process using perm-selective separations
US7358414B2 (en) * 2004-01-30 2008-04-15 Miller Jeffrey T Para-xylene process using perm-selective separations
US7563926B2 (en) 2004-09-02 2009-07-21 Eastman Chemical Company Optimized liquid-phase oxidation
US7572936B2 (en) 2004-09-02 2009-08-11 Eastman Chemical Company Optimized liquid-phase oxidation
US7568361B2 (en) 2004-09-02 2009-08-04 Eastman Chemical Company Optimized liquid-phase oxidation
US7507857B2 (en) 2004-09-02 2009-03-24 Eastman Chemical Company Optimized liquid-phase oxidation
US7582793B2 (en) 2004-09-02 2009-09-01 Eastman Chemical Company Optimized liquid-phase oxidation
US7589231B2 (en) 2004-09-02 2009-09-15 Eastman Chemical Company Optimized liquid-phase oxidation
US7572932B2 (en) 2004-09-02 2009-08-11 Eastman Chemical Company Optimized liquid-phase oxidation
US7381836B2 (en) 2004-09-02 2008-06-03 Eastman Chemical Company Optimized liquid-phase oxidation
US7399882B2 (en) 2004-09-02 2008-07-15 Eastman Chemical Company Optimized liquid-phase oxidation
US7504535B2 (en) 2004-09-02 2009-03-17 Eastman Chemical Company Optimized liquid-phase oxidation
US7371894B2 (en) 2004-09-02 2008-05-13 Eastman Chemical Company Optimized liquid-phase oxidation
US7692036B2 (en) 2004-11-29 2010-04-06 Eastman Chemical Company Optimized liquid-phase oxidation
US7683210B2 (en) 2004-09-02 2010-03-23 Eastman Chemical Company Optimized liquid-phase oxidation
US7608733B2 (en) 2004-09-02 2009-10-27 Eastman Chemical Company Optimized liquid-phase oxidation
US7361784B2 (en) 2004-09-02 2008-04-22 Eastman Chemical Company Optimized liquid-phase oxidation
US7495125B2 (en) 2004-09-02 2009-02-24 Eastman Chemical Company Optimized liquid-phase oxidation
US7482482B2 (en) 2004-09-02 2009-01-27 Eastman Chemical Company Optimized liquid-phase oxidation
US7741515B2 (en) 2004-09-02 2010-06-22 Eastman Chemical Company Optimized liquid-phase oxidation
US7910769B2 (en) 2004-09-02 2011-03-22 Eastman Chemical Company Optimized liquid-phase oxidation
US7608732B2 (en) 2005-03-08 2009-10-27 Eastman Chemical Company Optimized liquid-phase oxidation
US7390921B2 (en) 2004-09-02 2008-06-24 Eastman Chemical Company Optimized liquid-phase oxidation
US7692037B2 (en) 2004-09-02 2010-04-06 Eastman Chemical Company Optimized liquid-phase oxidation
US7586000B2 (en) 2004-09-02 2009-09-08 Eastman Chemical Company Optimized liquid-phase oxidation
US7249469B2 (en) * 2004-11-18 2007-07-31 Exxonmobil Chemical Patents Inc. Method for separating a multicomponent stream
US7884232B2 (en) 2005-06-16 2011-02-08 Eastman Chemical Company Optimized liquid-phase oxidation
US7355068B2 (en) 2006-01-04 2008-04-08 Eastman Chemical Company Oxidation system with internal secondary reactor
US7358389B2 (en) 2006-01-04 2008-04-15 Eastman Chemical Company Oxidation system employing internal structure for enhanced hydrodynamics
US7687674B2 (en) 2006-12-28 2010-03-30 Uop Llc Low temperature process for recovering and producing para-xylene and heat exchange network therefore
FR2915481B1 (fr) * 2007-04-26 2012-09-21 Inst Francais Du Petrole Procede de production de metaxylene a haute purete comprenant une adsorption en lit mobile simule et une cristallisation
CN101993332B (zh) * 2009-08-31 2013-06-19 中国石油化工股份有限公司 联合生产芳烃的组合方法
EP2970048B1 (en) * 2013-03-15 2020-06-10 BP Corporation North America Inc. Process for recovering paraxylene from at least two feedstreams containing xylene isomers
CN105085155B (zh) * 2014-05-05 2018-03-20 中国石油化工股份有限公司 一种对二甲苯的生产方法
CN107759433B (zh) * 2016-08-23 2020-12-01 中国石油化工股份有限公司 对二甲苯和乙苯择形歧化方法
US11040930B2 (en) * 2017-12-05 2021-06-22 Ineos Us Chemicals Company Method of recovering paraxylene in a crystallization zone
FR3087666B1 (fr) * 2018-10-24 2021-07-02 Ifp Energies Now Procede et dispositif de production de paraxylene en contre-courant simule reactif avec variation de temperature
WO2021041022A1 (en) 2019-08-23 2021-03-04 Exxonmobil Chemical Patents Inc. Processes for isomerizing c8 aromatic hydrocarbons using serial reactors
US12037314B2 (en) 2019-08-23 2024-07-16 ExxonMobil Engineering & Technology Company Processes for isomerizing C8 aromatic hydrocarbons
CN115959968B (zh) * 2021-10-11 2025-09-26 中国石油化工股份有限公司 一种生产对二甲苯的方法

Family Cites Families (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE18802E (en) * 1927-12-15 1933-04-25 Process for maintaining the composition of viscose precipitating baths
BE499776A (es) * 1947-08-26
US2552523A (en) * 1948-06-18 1951-05-15 Ohio Commw Eng Co Method of extracting liquids from a solution to effect concentration
US2622115A (en) * 1949-05-23 1952-12-16 Phillips Petroleum Co Separation of eutectic-forming mixtures by crystallization methods
US2614134A (en) * 1950-06-21 1952-10-14 Standard Oil Dev Co Purification of crystalline substances
US2848515A (en) * 1952-02-16 1958-08-19 Exxon Research Engineering Co Purification of paraxylene
US2766309A (en) * 1952-05-23 1956-10-09 Exxon Research Engineering Co Wash technique for paraxylene process
US2724007A (en) * 1952-07-30 1955-11-15 Exxon Research Engineering Co Para xylene separation process
US2776328A (en) * 1952-09-08 1957-01-01 Exxon Research Engineering Co Durene recovery process
US2795634A (en) * 1953-05-01 1957-06-11 Standard Oil Co Recovery of ortho-and para-xylenes from c8 aromatic mixtures
US2866833A (en) * 1953-09-14 1958-12-30 Standard Oil Co Paraxylene purification system
US2823241A (en) * 1954-03-22 1958-02-11 Exxon Research Engineering Co Method for washing a filter cake
DE1249245B (de) * 1955-12-27 1967-09-07 Esso Research and Engineering Company, Elizabeth, N. J. (V. St. A) Verfahren zur Abtrennung eines reinen kristallisierbaren Kohlenwasserstoffes aus einem Kohlenwasserstoffgemisch durch mehrstufiges Umkristallisieren unter teilweiser Rückführung der Mutterlauge
US2848416A (en) * 1956-10-08 1958-08-19 Texas Co Extreme pressure soluble oil
NL128788C (es) * 1958-03-12
US2989371A (en) * 1958-08-01 1961-06-20 Charles L Mehltretter Process for separation of sodium metaperiodate from sodium sulfate
US3049575A (en) * 1960-01-18 1962-08-14 Union Oil Co Separation of organic compounds
US3133126A (en) * 1960-09-12 1964-05-12 Union Oil Co Aromatic hydrocarbon separation
US3197524A (en) * 1960-11-10 1965-07-27 Union Oil Co Recovery of petroleum naphthalene
NL278713A (es) * 1961-05-22
US3197525A (en) * 1961-08-07 1965-07-27 Union Oil Co Clathration process
US3219722A (en) * 1961-12-05 1965-11-23 Chevron Res Cyclic crystallization process
US3462510A (en) * 1967-05-22 1969-08-19 Sinclair Research Inc Separation of p-xylene from a c8 aromatic hydrocarbon mixture by crystallization
US3462509A (en) * 1967-05-22 1969-08-19 Sinclair Research Inc Separation of p-xylene from a c8 aromatic hydrocarbon mixture by crystallization
US3462508A (en) * 1967-05-22 1969-08-19 Sinclair Research Inc Separation of p-xylene from a c8 aromatic hydrocarbon mixture by crystallization
US3835198A (en) * 1968-08-29 1974-09-10 Phillips Petroleum Co Production of paraxylene
DE1934721C3 (de) * 1969-07-09 1974-01-17 Fried. Krupp Gmbh, 4300 Essen Verfahren zum Abtrennen von Flüssigkeitsfilmen von p-Xylol-Kristallen
DE1949446A1 (de) * 1969-10-01 1972-02-03 Krupp Gmbh Verfahren zur Gewinnung von reinem p-Xylol
US3662013A (en) * 1970-02-03 1972-05-09 Mobil Oil Corp Single stage crystallization process for separating high purity paraxylene
US3729523A (en) * 1971-04-14 1973-04-24 Mobil Oil Corp Recovery of isomers from aromatic mixtures
GB1381724A (en) * 1971-04-30 1975-01-29 Ici Ltd Separation process
US3773846A (en) * 1972-08-07 1973-11-20 Universal Oil Prod Co Process for the production of high purity meta-xylene
US3825614A (en) * 1972-08-11 1974-07-23 Standard Oil Co Recovery of meta-xylene by selective crystallization
US3813452A (en) * 1972-10-20 1974-05-28 Universal Oil Prod Co Process for separating para-xylene
CA1059928A (en) * 1972-11-28 1979-08-07 Paul T. Allen Separation of aromatic isomers
US3916018A (en) * 1973-03-26 1975-10-28 Atlantic Richfield Co Separation of paraxylene
US3963424A (en) * 1973-05-14 1976-06-15 Whiting Corporation Cooling aqueous alkali metal hydroxide liquors by vacuum evaporation with subsequent solids precipitate removal
US3939221A (en) * 1973-07-27 1976-02-17 The British Petroleum Chemical International Ltd. Xylenes separation process
US3948758A (en) * 1974-06-17 1976-04-06 Mobil Oil Corporation Production of alkyl aromatic hydrocarbons
GB1476222A (en) * 1974-11-21 1977-06-10 Ici Ltd Separating xylenes by crystal size classification
US3963795A (en) * 1974-12-20 1976-06-15 Standard Oil Company Separation of isomers by selective melting in an immiscible liquid
US3965247A (en) * 1975-06-20 1976-06-22 Allied Chemical Corporation Recovery of sodium nitrite from by-product process liquors containing sodium chloride
US4097543A (en) * 1976-05-12 1978-06-27 Mobil Oil Corporation Selective disproportionation of toluene
US4117026A (en) * 1976-05-12 1978-09-26 Mobil Oil Corporation Selective production of para dialkyl substituted benzenes
US4171205A (en) * 1976-10-19 1979-10-16 Aluminium Pechiney Process for obtaining an aluminum sulfate hydrate from an impure sulfuric acid solution of aluminum sulfate
US4118429A (en) * 1977-09-26 1978-10-03 Uop Inc. Production and recovery of para-xylene
NL7801367A (nl) * 1978-02-07 1979-08-09 Shell Int Research Werkwijze voor de bereiding en afscheiding van p-xyleen.
NL8200075A (nl) * 1982-01-11 1983-08-01 Tno Werkwijze voor het continu gedeeltelijk kristaliseren en het scheiden van een vloeibaar mengsel en een inrichting voor het uitvoeren van deze werkwijze.
US4402832A (en) * 1982-08-12 1983-09-06 Uop Inc. High efficiency continuous separation process
US4650658A (en) * 1983-05-12 1987-03-17 Nippon Silica Industrial Co., Ltd. Stable crystals of sodium bromite trihydrate
US4498991A (en) * 1984-06-18 1985-02-12 Uop Inc. Serial flow continuous separation process
US4723962A (en) * 1985-02-04 1988-02-09 Lithium Corporation Of America Process for recovering lithium from salt brines
US5004860A (en) * 1986-07-28 1991-04-02 Amoco Corporation Filter system
NL8603314A (nl) * 1986-12-29 1988-07-18 Grasso Koninkl Maschf Werkwijze en inrichting voor het winnen van een zuivere stof uit een vloeibaar mengsel door kristallisatie.
US4851604A (en) * 1987-09-02 1989-07-25 Mobil Oil Corp. Toluene disproportionation
US5243117A (en) * 1990-06-05 1993-09-07 Mobil Oil Corp. Catalyst and process for the selective production of para-dialkyl substituted benzenes
US5173461A (en) * 1990-03-21 1992-12-22 Mobil Oil Corporation Toluene disproportionation catalyst
DE59105262D1 (de) * 1990-12-21 1995-05-24 Sulzer Chemtech Ag Verfahren und Vorrichtung zur Stofftrennung mittels Kristallisation.
TW200454B (es) * 1991-09-05 1993-02-21 Inst Of France Petroleum
US5321183A (en) * 1992-03-12 1994-06-14 Mobil Oil Corp. Process for the regioselective conversion of aromatics to para-disubstituted benzenes
US5329060A (en) * 1993-04-01 1994-07-12 Uop Integrated selective adsorption and crystallization process for para-xylene recovery
US5329061A (en) * 1993-06-01 1994-07-12 Uop Crystallization process for para-xylene recovery using two-stage recovery section
US5498822A (en) * 1994-04-04 1996-03-12 Mobil Oil Corporation Single temperature stage crystallization of paraxylene
US5448005A (en) * 1994-04-04 1995-09-05 Mobil Oil Corporation Crystallization of paraxlene from high purity paraxylene feeds
FR2739097B1 (fr) * 1995-09-22 1997-12-19 Rattheon Engineers & Construct Procede de purification de paraxylene par cristallisation fractionnee
FR2739375B1 (fr) * 1995-09-29 1997-12-05 Inst Francais Du Petrole Production de paraxylene a partir d'un effluent de dismutation paraselective du toluene par un procede de cristallisation associe a une adsorption en lit mobile simule

Also Published As

Publication number Publication date
KR987000946A (ko) 1998-04-30
CN1171770A (zh) 1998-01-28
US6147272A (en) 2000-11-14
PL184646B1 (pl) 2002-11-29
KR100357003B1 (ko) 2003-02-17
FR2728894B1 (es) 1997-02-21
JPH10511672A (ja) 1998-11-10
DE69523946T2 (de) 2002-04-04
AR000586A1 (es) 1997-07-10
PL321016A1 (en) 1997-11-24
AU708254B2 (en) 1999-07-29
EP0800499B1 (fr) 2001-11-14
EP0800499A1 (fr) 1997-10-15
JP3955998B2 (ja) 2007-08-08
DE69523946D1 (de) 2001-12-20
WO1996020908A1 (fr) 1996-07-11
SA96160510B1 (ar) 2005-04-17
MY113859A (en) 2002-06-29
AU4451896A (en) 1996-07-24
FR2728894A1 (fr) 1996-07-05
TW307745B (es) 1997-06-11
CN1055283C (zh) 2000-08-09
CA2208984A1 (fr) 1996-07-11
CA2208984C (fr) 2007-09-18
ES2169165T3 (es) 2002-07-01

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