FR2069748A5 - - Google Patents

Info

Publication number
FR2069748A5
FR2069748A5 FR7041703A FR7041703A FR2069748A5 FR 2069748 A5 FR2069748 A5 FR 2069748A5 FR 7041703 A FR7041703 A FR 7041703A FR 7041703 A FR7041703 A FR 7041703A FR 2069748 A5 FR2069748 A5 FR 2069748A5
Authority
FR
France
Prior art keywords
melt
crystal mass
nov
separation
isomer
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.)
Expired
Application number
FR7041703A
Other languages
English (en)
French (fr)
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of FR2069748A5 publication Critical patent/FR2069748A5/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/02—Combinations of filters of different kinds
    • 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
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
    • 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
    • C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
    • C07C205/07—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms
    • C07C205/11—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings
    • C07C205/12—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings the six-membered aromatic ring or a condensed ring system containing that ring being substituted by halogen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR7041703A 1969-11-21 1970-11-20 Expired FR2069748A5 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691958461 DE1958461C3 (de) 1969-11-21 1969-11-21 Verfahren zur kontinuierlichen Trennung von o-/p-Nitrochlorbenzol aus einem Isomerengemisch von o-/p-/m-Nitrochlorbenzol

Publications (1)

Publication Number Publication Date
FR2069748A5 true FR2069748A5 (enrdf_load_stackoverflow) 1971-09-03

Family

ID=5751679

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7041703A Expired FR2069748A5 (enrdf_load_stackoverflow) 1969-11-21 1970-11-20

Country Status (11)

Country Link
AT (1) AT305977B (enrdf_load_stackoverflow)
BE (1) BE759151A (enrdf_load_stackoverflow)
CA (1) CA927843A (enrdf_load_stackoverflow)
CH (1) CH545118A (enrdf_load_stackoverflow)
CS (1) CS174806B2 (enrdf_load_stackoverflow)
DE (1) DE1958461C3 (enrdf_load_stackoverflow)
FR (1) FR2069748A5 (enrdf_load_stackoverflow)
GB (1) GB1322020A (enrdf_load_stackoverflow)
IL (1) IL35703A (enrdf_load_stackoverflow)
NL (1) NL7016765A (enrdf_load_stackoverflow)
SE (1) SE387328B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643030A1 (de) * 1993-09-10 1995-03-15 Bayer Ag Verfahren zur Isolierung von m-Dichlorbenzol aus Dichlorbenzol-Isomerengemischen

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672816B1 (fr) * 1991-02-18 1994-09-23 Inst Tech Vigne Vin Installation pour la separation en continu par cristallisation et par filtration d'un sel peu soluble dissout dans une solution liquide.
IT1302120B1 (it) * 1998-07-29 2000-07-31 Univ Roma Procedimento per la purificazione di prodotti chimici solidi mediantedry-sweating
CN101906043B (zh) * 2010-08-19 2013-06-12 江苏隆昌化工有限公司 一种溶剂洗涤法提纯高纯度2,5-二氯硝基苯的生产工艺
CN115819245B (zh) * 2022-11-16 2025-06-17 湖北东方化工有限公司 一种用于单硝基甲苯精馏与熔融结晶的耦合工艺方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643030A1 (de) * 1993-09-10 1995-03-15 Bayer Ag Verfahren zur Isolierung von m-Dichlorbenzol aus Dichlorbenzol-Isomerengemischen
US5436377A (en) * 1993-09-10 1995-07-25 Bayer Aktiengesellschaft Process for isolating M-dichlorobenzene from mixtures of dichlorobenzene isomers
CN1043224C (zh) * 1993-09-10 1999-05-05 拜尔公司 从二氯苯异构体混合物中分离间二氯苯的方法

Also Published As

Publication number Publication date
AT305977B (de) 1973-03-26
IL35703A0 (en) 1971-01-28
CS174806B2 (enrdf_load_stackoverflow) 1977-04-29
GB1322020A (en) 1973-07-04
NL7016765A (enrdf_load_stackoverflow) 1971-05-25
DE1958461A1 (de) 1971-07-29
SE387328B (sv) 1976-09-06
IL35703A (en) 1975-02-10
DE1958461B2 (de) 1972-12-14
SU383278A3 (enrdf_load_stackoverflow) 1973-05-25
DE1958461C3 (de) 1973-07-12
BE759151A (fr) 1971-05-19
CA927843A (en) 1973-06-05
CH545118A (de) 1973-12-15

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