PT86712A - Process for preparing p-xylene having a purity of at least 99,5% - Google Patents

Process for preparing p-xylene having a purity of at least 99,5%

Info

Publication number
PT86712A
PT86712A PT86712A PT8671288A PT86712A PT 86712 A PT86712 A PT 86712A PT 86712 A PT86712 A PT 86712A PT 8671288 A PT8671288 A PT 8671288A PT 86712 A PT86712 A PT 86712A
Authority
PT
Portugal
Prior art keywords
xylene
purity
preparing
Prior art date
Application number
PT86712A
Other languages
English (en)
Other versions
PT86712B (pt
Inventor
Guenter Puppel
Original Assignee
Krupp Koppers Gmbh
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 DE3703646A external-priority patent/DE3703646C2/de
Application filed by Krupp Koppers Gmbh filed Critical Krupp Koppers Gmbh
Publication of PT86712A publication Critical patent/PT86712A/pt
Publication of PT86712B publication Critical patent/PT86712B/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C62/00—Compounds having carboxyl groups bound to carbon atoms of rings other than six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
    • 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
    • B01D9/004—Fractional crystallisation; Fractionating or rectifying columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
    • C07C39/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring monocyclic with no unsaturation outside the aromatic ring
    • C07C39/06—Alkylated phenols
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (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)
PT86712A 1987-02-06 1988-02-05 Processo para a preparacao de p-xileno com um grau de pureza de pelo menos 99,5% PT86712B (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3703646A DE3703646C2 (de) 1987-02-06 1987-02-06 Verfahren zur Gewinnung von p-Xylol mit einer Reinheit von mindestens 99,5 %

Publications (2)

Publication Number Publication Date
PT86712A true PT86712A (pt) 1988-03-01
PT86712B PT86712B (pt) 1992-04-30

Family

ID=6320395

Family Applications (1)

Application Number Title Priority Date Filing Date
PT86712A PT86712B (pt) 1987-02-06 1988-02-05 Processo para a preparacao de p-xileno com um grau de pureza de pelo menos 99,5%

Country Status (6)

Country Link
KR (1) KR890700559A (pt)
CN (1) CN1016685B (pt)
ES (1) ES2006067A6 (pt)
PT (1) PT86712B (pt)
TR (1) TR23271A (pt)
WO (1) WO1988005766A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839229A1 (de) * 1988-11-19 1990-05-23 Krupp Koppers Gmbh Verfahren zur gewinnung von p-xylol mit einer reinheit von mehr als 99,8 gew.-%
EG20284A (en) * 1993-02-17 1998-07-30 Ici Plc Separation process
GB9303191D0 (en) * 1993-02-17 1993-03-31 Ici Plc Separation process
CN103086846B (zh) * 2011-10-28 2015-08-19 中国石油化工股份有限公司 一种连续分离异丙基苯酚的装置及方法
CN104030880B (zh) * 2013-08-08 2016-07-06 中石化上海工程有限公司 直接冷却结晶分离对二甲苯的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769852A (en) * 1953-04-01 1956-11-06 California Research Corp Separation of xylene isomers by fractional crystallization
DE2156880A1 (de) * 1970-11-17 1972-05-25 Monsanto Co Abtrennung durch Kristallisation in Gegenwart von Wasser

Also Published As

Publication number Publication date
CN88100630A (zh) 1988-11-09
WO1988005766A1 (en) 1988-08-11
CN1016685B (zh) 1992-05-20
TR23271A (tr) 1989-08-09
ES2006067A6 (es) 1989-04-01
PT86712B (pt) 1992-04-30
KR890700559A (ko) 1989-04-25

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Legal Events

Date Code Title Description
FG3A Patent granted, date of granting

Effective date: 19911023