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KR890700559A - Process for the preparation of para-xylol having a purity of at least 99.5% - Google Patents

Process for the preparation of para-xylol having a purity of at least 99.5%

Info

Publication number
KR890700559A
KR890700559A KR1019880700933A KR880700933A KR890700559A KR 890700559 A KR890700559 A KR 890700559A KR 1019880700933 A KR1019880700933 A KR 1019880700933A KR 880700933 A KR880700933 A KR 880700933A KR 890700559 A KR890700559 A KR 890700559A
Authority
KR
South Korea
Prior art keywords
liquid
inert liquid
separated
para
inert
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.)
Withdrawn
Application number
KR1019880700933A
Other languages
Korean (ko)
Inventor
귄터 푸펠
Original Assignee
페터 그리스함머·후라우케 에거스
크룹 코퍼스 게엠베하
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/en
Application filed by 페터 그리스함머·후라우케 에거스, 크룹 코퍼스 게엠베하 filed Critical 페터 그리스함머·후라우케 에거스
Publication of KR890700559A publication Critical patent/KR890700559A/en
Withdrawn legal-status Critical Current

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)

Abstract

내용 없음.No content.

Description

적어도 99.5%의 순도를 가지는 파라-크시롤의 제조방법Process for the preparation of para-xylol having a purity of at least 99.5%

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (8)

파라-크시롤 함량이 적어도 99%에 달하는 중간 제품으로부터 적어도 99.5%의 순도를 가지는 파라-크시롤의 제조를 위한 방법에 있어서, 액체상태에 있는 중간제품이 온도가 순수한 파라-크시롤의 용융점 이하에 놓여 있는 불활성 액체내에 도입되어지며, 그뒤에 분리장치내에서 교반하면서 분리되고 있는 결정상이불활성 액체로부터 분리되며 이어서 용융되며, 여기서 용해장치에 아직도 존재하는 액체 잔량은 용융된 결정으로부터 분리되고 그리고 이것은 그뒤에 원하는 순도를 가지는 파라-크시롤로서 용해장치로부터 인출되어지는 것을 특징으로하는 방법.A process for the production of para-xylol having a purity of at least 99.5% from an intermediate product having a para-xylol content of at least 99%, wherein the intermediate in liquid state is below the melting point of the pure para-xylol Is introduced into an inert liquid, which is then separated from the inert liquid, which is being separated with stirring in the separator, and subsequently melted, where the remaining liquid remaining in the dissolution apparatus is separated from the molten crystal and And then withdrawn from the dissolution apparatus as para-xyrol having the desired purity. 제1항에 있어서, 불활성 액체로서 바람직하게는 물이 사용되는 것을 특징으로하는 방법.Process according to claim 1, characterized in that water is preferably used as the inert liquid. 제1항 또는 제2항에 있어서, 불활성 액체의 온도는 반제품의 도입시에 0 내지 12℃의 범위에서 유지되는 것을 특징으로하는 방법.The method according to claim 1 or 2, wherein the temperature of the inert liquid is maintained in the range of 0 to 12 DEG C upon introduction of the semifinished product. 제1항 내지 제3항중의 하나의 항에 있어서, 불활성 액체로서 물의 사용의 경우에는 경우에 따라서는 이 물에 예를들면 에틸렌 그리콜과 같은 동결방지제가 첨가되는 것을 특징으로하는 방법.The method according to claim 1, wherein in the case of the use of water as an inert liquid, an antifreeze agent such as ethylene glycol is optionally added to this water. 제1항 내지 제4항중이 하나의 항에 있어서, 불활성 액체는 결정상의 분리후에 여과액 탱크에 도입되어지며 이 여과액 탱크에서 이 액체는 상분리에 의하여 동반되어진 탄화수소로부터 분리되며 그후에 상응하는 재냉각을 하면서 프로세스에로 복귀되어지는 것을 특징으로하는 방법.The method according to any one of claims 1 to 4, wherein the inert liquid is introduced into the filtrate tank after separation of the crystalline phase, in which the liquid is separated from the hydrocarbons entrained by phase separation and thereafter a corresponding recooling. While being returned to the process. 제1항 내지 제5항중의 하나의 항에 있어서, 여과액 탱크내에서 불활성 액체로부터 분리되었으며 대체로 오소- 및 메타-크시롤 그리고 또 에틸벤졸로된 혼합물이 중요한 것인 그러한 탄화수소들은 중간제품의 제조에 쓰이는 프로세스에 복귀되어지는 것을 특징으로하는 방법.The hydrocarbons according to any one of claims 1 to 5, wherein the hydrocarbons are separated from inert liquids in the filtrate tank and the mixtures, generally consisting of ortho- and meta-xyrol and also ethylbenzol, are of interest for the preparation of intermediates. A method characterized by being returned to the process used for. 제1항 내지 제6항중의 하나의 항에 있어서, 용해장치에서 발생하는 불활성 액체는 마찬가지로 액체의 대부분의 양의 처리에 사용되는 여과액 탱크에 도입되어지는 것을 특징으로 하는 방법.The method according to claim 1, wherein the inert liquid generated in the dissolution apparatus is likewise introduced into a filtrate tank used for the treatment of most of the liquid. 제1항 내지 제7항중의 하나의 항에 있어서, 결정-액체 혼합물의 부분류는 분리 탱크로부터 결정상의 분리전에 혼합탱크로 복귀되어지며, 이 혼합탱크에서 불활성 액체에로의 액상의 중간 제품의 도입이 이루어지는 것을 특징으로하는 방법.8. The liquid flow according to claim 1, wherein a partial flow of the crystal-liquid mixture is returned from the separation tank to the mixing tank prior to separation of the crystalline phase, from which the intermediate product of the liquid phase into the inert liquid Wherein the introduction is made. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880700933A 1987-02-06 1988-01-07 Process for the preparation of para-xylol having a purity of at least 99.5% Withdrawn KR890700559A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3703646A DE3703646C2 (en) 1987-02-06 1987-02-06 Process for the production of p-xylene with a purity of at least 99.5%
DEP3703646.7 1987-02-06
PCT/DE1988/000009 WO1988005766A1 (en) 1987-02-06 1988-01-07 PROCESS FOR PRODUCING p-XYLOL WITH A PURITY OF AT LEAST 99.5 %

Publications (1)

Publication Number Publication Date
KR890700559A true KR890700559A (en) 1989-04-25

Family

ID=6320395

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880700933A Withdrawn KR890700559A (en) 1987-02-06 1988-01-07 Process for the preparation of para-xylol having a purity of at least 99.5%

Country Status (6)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839229A1 (en) * 1988-11-19 1990-05-23 Krupp Koppers Gmbh METHOD FOR OBTAINING P-XYLOL WITH A PURITY OF MORE THAN 99.8% BY WEIGHT
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 (en) * 2011-10-28 2015-08-19 中国石油化工股份有限公司 A kind of device and method being continuously separated isopropyl-phenol
CN104030880B (en) * 2013-08-08 2016-07-06 中石化上海工程有限公司 The method of direct crystallisation by cooling separating paraxylene

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
BE775337A (en) * 1970-11-17 1972-05-16 Monsanto Co SEPARATION BY CRYSTALLIZATION IN THE PRESENCE OF WATER

Also Published As

Publication number Publication date
PT86712A (en) 1988-03-01
PT86712B (en) 1992-04-30
CN88100630A (en) 1988-11-09
CN1016685B (en) 1992-05-20
WO1988005766A1 (en) 1988-08-11
TR23271A (en) 1989-08-09
ES2006067A6 (en) 1989-04-01

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Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19880806

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid