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WO2012147037A3 - Sustainable chemical process for isolation of naphthalene sulphonic acid compounds with inherent recycle of all acidic streams generated during isolation and washing - Google Patents

Sustainable chemical process for isolation of naphthalene sulphonic acid compounds with inherent recycle of all acidic streams generated during isolation and washing Download PDF

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Publication number
WO2012147037A3
WO2012147037A3 PCT/IB2012/052072 IB2012052072W WO2012147037A3 WO 2012147037 A3 WO2012147037 A3 WO 2012147037A3 IB 2012052072 W IB2012052072 W IB 2012052072W WO 2012147037 A3 WO2012147037 A3 WO 2012147037A3
Authority
WO
WIPO (PCT)
Prior art keywords
isolation
acid compounds
naphthalene sulphonic
sulphonic acid
recycle
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.)
Ceased
Application number
PCT/IB2012/052072
Other languages
French (fr)
Other versions
WO2012147037A2 (en
Inventor
Bhadresh K PADIA
Nitesh H MEHTA
Komal MAHESHWARI
Rajesh MOHALKAR
Ashwini GUNNAL
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201280031697.8A priority Critical patent/CN103687848B/en
Publication of WO2012147037A2 publication Critical patent/WO2012147037A2/en
Publication of WO2012147037A3 publication Critical patent/WO2012147037A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/42—Separation; Purification; Stabilisation; Use of additives
    • C07C303/44—Separation; Purification

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Isolation of Naphthalene Sulphonic Acid Compounds is achieved with acidification of alkali fusion mixture with dilute sulphuric acid to precipitation at the predetermined conditions temperature, time and pH and Naphthalene Sulphonic Acid Compounds is separated as a partial alkali metal salt by precipitation and separated by filtration. The resulting filtrate after recycle treatment containing soluble Naphthalene Sulphonic Acid Compounds and/or a salt thereof after recycle treatment is used as a starting reaction medium, top up reaction medium, dilution reaction medium for said subsequent isolation of Naphthalene Sulphonic Acid Compounds. Isolation of Naphthalene Sulphonic Acids can be achieved by two methods viz. forward isolation and Reverse isolate.
PCT/IB2012/052072 2011-04-26 2012-04-26 Sustainable chemical process for isolation of naphthalene sulphonic acid compounds with inherent recycle of all acidic streams generated during isolation and washing Ceased WO2012147037A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280031697.8A CN103687848B (en) 2011-04-26 2012-04-26 Sustainable chemical process for separation of naphthalene sulfonic acid compounds using intrinsic recycle of all acidic streams generated during separation and washing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2975MU2010 2011-04-26
IN2975/MUM/2010 2011-04-26

Publications (2)

Publication Number Publication Date
WO2012147037A2 WO2012147037A2 (en) 2012-11-01
WO2012147037A3 true WO2012147037A3 (en) 2012-12-27

Family

ID=46317457

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/052072 Ceased WO2012147037A2 (en) 2011-04-26 2012-04-26 Sustainable chemical process for isolation of naphthalene sulphonic acid compounds with inherent recycle of all acidic streams generated during isolation and washing

Country Status (2)

Country Link
CN (1) CN103687848B (en)
WO (1) WO2012147037A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108358819B (en) * 2018-03-14 2020-11-13 荆门市丽康源纺织科技有限公司 Method for recovering R salt from K acid production mother liquor
CN112174858A (en) * 2020-09-28 2021-01-05 安徽生源化工有限公司 Beta-naphthalenesulfonic acid and refining method, filtrate and application thereof
CN113698323B (en) * 2021-09-02 2023-09-05 昌邑瑞新化学工业有限公司 Method for producing tobias acid by reducing yield of acid precipitation mother liquor wastewater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB109709A (en) * 1916-12-07 1917-09-27 Louis Munroe Dennis Improvements in or relating to Methods of Producing Sulphonic Acids or their Salts.
GB907612A (en) * 1960-09-22 1962-10-10 Allied Chem Improvements relating to the production of 2-naphthalene sulphuric acid
CN101811745A (en) * 2009-12-28 2010-08-25 天津吉星聚化工科技有限公司 Treating device for extracting naphthalene sulfonic acid waste liquor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB109709A (en) * 1916-12-07 1917-09-27 Louis Munroe Dennis Improvements in or relating to Methods of Producing Sulphonic Acids or their Salts.
GB907612A (en) * 1960-09-22 1962-10-10 Allied Chem Improvements relating to the production of 2-naphthalene sulphuric acid
CN101811745A (en) * 2009-12-28 2010-08-25 天津吉星聚化工科技有限公司 Treating device for extracting naphthalene sulfonic acid waste liquor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; ZHAO, HUILAN ET AL: "Apparatus for treating liquid waste from naphthalene sulfonic acid production through extraction", XP002684996, retrieved from STN Database accession no. 2010:1084869 *

Also Published As

Publication number Publication date
WO2012147037A2 (en) 2012-11-01
CN103687848B (en) 2018-04-24
CN103687848A (en) 2014-03-26

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