AT305977B - Process for the continuous separation of a technically pure isomer from isomer mixtures of nitrated and / or chlorinated benzenes and toluenes - Google Patents

Process for the continuous separation of a technically pure isomer from isomer mixtures of nitrated and / or chlorinated benzenes and toluenes

Info

Publication number: AT305977B
Authority: AT; Austria
Prior art keywords: isomer; toluenes; nitrated; continuous separation; technically pure
Prior art date: 1969-11-21

Application number

AT1042870A

Other languages

German (de)

Original Assignee

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.)

1969-11-21

Filing date

1970-11-19

Publication date

1973-03-26

1970-11-19 Application filed by Hoechst Ag filed Critical Hoechst Ag

1973-03-26 Application granted granted Critical

1973-03-26 Publication of AT305977B publication Critical patent/AT305977B/en

Links

150000001555 benzenes Chemical class 0.000 title 1
238000000034 method Methods 0.000 title 1
239000000203 mixture Substances 0.000 title 1
238000000926 separation method Methods 0.000 title 1
150000003613 toluenes Chemical class 0.000 title 1

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)

AT1042870A 1969-11-21 1970-11-19 Process for the continuous separation of a technically pure isomer from isomer mixtures of nitrated and / or chlorinated benzenes and toluenes AT305977B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19691958461 DE1958461C3 (en)	1969-11-21	1969-11-21	Process for the continuous separation of o- / p-nitrochlorobenzene from an isomer mixture of o- / p- / m-nitrochlorobenzene

Publications (1)

Publication Number	Publication Date
AT305977B true AT305977B (en)	1973-03-26

Family

ID=5751679

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT1042870A AT305977B (en)	1969-11-21	1970-11-19	Process for the continuous separation of a technically pure isomer from isomer mixtures of nitrated and / or chlorinated benzenes and toluenes

Country Status (11)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2672816B1 (en) *	1991-02-18	1994-09-23	Inst Tech Vigne Vin	INSTALLATION FOR THE CONTINUOUS SEPARATION BY CRYSTALLIZATION AND BY FILTRATION OF A LITTLE SOLUBLE SALT DISSOLVED IN A LIQUID SOLUTION.
DE4330731A1 (en) *	1993-09-10	1995-03-16	Bayer Ag	Process for the isolation of m-dichlorobenzene from dichlorobenzene isomer mixtures
IT1302120B1 (en) *	1998-07-29	2000-07-31	Univ Roma	PROCEDURE FOR PURIFICATION OF MEDIANTEDRY-SWEATING SOLID CHEMICAL PRODUCTS
CN101906043B (en) *	2010-08-19	2013-06-12	江苏隆昌化工有限公司	Production process for purifying high-purity 2,5-dichloronitrobenzene by solvent washing method
CN115819245B (en) *	2022-11-16	2025-06-17	湖北东方化工有限公司	A coupling process method for mononitrotoluene distillation and melt crystallization

0
- BE BE759151D patent/BE759151A/en not_active IP Right Cessation
1969
- 1969-11-21 DE DE19691958461 patent/DE1958461C3/en not_active Expired
1970
- 1970-11-16 NL NL7016765A patent/NL7016765A/xx not_active Application Discontinuation
- 1970-11-18 CH CH1705970A patent/CH545118A/en not_active IP Right Cessation
- 1970-11-19 CS CS7821A patent/CS174806B2/cs unknown
- 1970-11-19 GB GB5506370A patent/GB1322020A/en not_active Expired
- 1970-11-19 AT AT1042870A patent/AT305977B/en active
- 1970-11-20 SE SE7015715A patent/SE387328B/en unknown
- 1970-11-20 FR FR7041703A patent/FR2069748A5/fr not_active Expired
- 1970-11-20 CA CA098680A patent/CA927843A/en not_active Expired
- 1970-11-22 IL IL35703A patent/IL35703A/en unknown

Also Published As

Publication number	Publication date
DE1958461C3 (en)	1973-07-12
SE387328B (en)	1976-09-06
FR2069748A5 (en)	1971-09-03
IL35703A (en)	1975-02-10
NL7016765A (en)	1971-05-25
GB1322020A (en)	1973-07-04
SU383278A3 (en)	1973-05-25
CH545118A (en)	1973-12-15
DE1958461A1 (en)	1971-07-29
CS174806B2 (en)	1977-04-29
CA927843A (en)	1973-06-05
IL35703A0 (en)	1971-01-28
DE1958461B2 (en)	1972-12-14
BE759151A (en)	1971-05-19

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