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 PDFInfo
- 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
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
Landscapes
- 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280031697.8A CN103687848B (en) | 2011-04-26 | 2012-04-26 | Utilize the sustainable chemistry method of the Intrinsical recycling separation naphthalene sulfonic acids compound of all acid streams produced during separation and washing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN2975/MUM/2010 | 2011-04-26 | ||
IN2975MU2010 | 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 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)
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)
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 |
-
2012
- 2012-04-26 WO PCT/IB2012/052072 patent/WO2012147037A2/en active Application Filing
- 2012-04-26 CN CN201280031697.8A patent/CN103687848B/en active Active
Patent Citations (3)
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)
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 |
---|---|
CN103687848A (en) | 2014-03-26 |
WO2012147037A2 (en) | 2012-11-01 |
CN103687848B (en) | 2018-04-24 |
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