ES2167818T3 - Metodo para separar sulfato amonico de bisulfato amonico y procedimiento para producir acido 2-hidroxi-4-metiltiobutanoico utilizando el metodo. - Google Patents
Metodo para separar sulfato amonico de bisulfato amonico y procedimiento para producir acido 2-hidroxi-4-metiltiobutanoico utilizando el metodo.Info
- Publication number
- ES2167818T3 ES2167818T3 ES98103840T ES98103840T ES2167818T3 ES 2167818 T3 ES2167818 T3 ES 2167818T3 ES 98103840 T ES98103840 T ES 98103840T ES 98103840 T ES98103840 T ES 98103840T ES 2167818 T3 ES2167818 T3 ES 2167818T3
- Authority
- ES
- Spain
- Prior art keywords
- ammonic
- bisulfate
- hydroxi
- sulphate
- methyltibutanic
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
- C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
- C07C319/20—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PROCESO DE PRODUCCION DEL ACIDO 2 - HIDROXI - 4 METILTIOBUTANOICO, CONSISTENTE EN UNA HIDRATACION Y UNAS HIDROLISIS SUCESIVAS DEL 2 - HIDROXI - 4 - METILTIOBUTIRONITRILO EN UN SISTEMA DE REACCION QUE CONTENGA 2 - HIDROXI - 4 METILTIOBUTIRONITRILO Y ACIDO SULFURICO, DE FORMA QUE SE AÑADE EL BISULFATO AMONICO AL SISTEMA DE LA REACCION EN EL MOMENTO DE LA HIDRATACION Y/O LA HIDROLISIS, SE EXTRAE EL ACIDO 2 - HIDROXI - 4 - METILTIOBUTANOICO DE LA CAPA ORGANICA RESULTANTE, SE AÑADE UN DISOLVENTE ORGANICO MISCIBLE EN AGUA A LA CAPA ACUOSA GENERADA PARA PRECIPITAR EL SULFATO AMONICO, SE SEPARA EL SULFATO AMONICO DEL BISULFATO AMONICO Y SE ELIMINA AQUEL, LO QUE PERMITE QUE SE RECICLE Y REUTILICE EL BISULFATO AMONICO, SE REDUZCA LA CANTIDAD DE ACIDO SULFURICO USADO, SE PRODUZCAN UNAS AGUAS RESIDUALES QUE APENAS CONTENGAN SULFATOS, SE OBTENGA UN PROCESO CON UN BAJO COSTE DE PRODUCCION Y SE CONSERVE EL MEDIO AMBIENTE.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4902997 | 1997-03-04 | ||
JP24859297A JP3804210B2 (ja) | 1997-03-04 | 1997-09-12 | 2−ヒドロキシ−4−メチルチオブタン酸の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2167818T3 true ES2167818T3 (es) | 2002-05-16 |
Family
ID=26389382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98103840T Expired - Lifetime ES2167818T3 (es) | 1997-03-04 | 1998-03-04 | Metodo para separar sulfato amonico de bisulfato amonico y procedimiento para producir acido 2-hidroxi-4-metiltiobutanoico utilizando el metodo. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5973198A (es) |
EP (1) | EP0863135B1 (es) |
JP (1) | JP3804210B2 (es) |
CN (1) | CN1109020C (es) |
BR (1) | BR9800818A (es) |
DE (1) | DE69803707T2 (es) |
ES (1) | ES2167818T3 (es) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5905171A (en) | 1995-06-22 | 1999-05-18 | Novus International, Inc. | Process for the preparation of 3-(methylthio)propanal |
US6627773B1 (en) * | 1999-02-03 | 2003-09-30 | Sumitomo Chemical Company, Limited | Process for producing 2-hydroxy-4-methyl-thiobutanoic acid |
US6649794B2 (en) | 2000-02-18 | 2003-11-18 | Sumitomo Chemical Company, Limited | Method for producing 2-Hydroxy-4-Methylthiobutanoic Acid |
JP4696496B2 (ja) | 2004-08-18 | 2011-06-08 | 住友化学株式会社 | 2−ヒドロキシ−4−メチルチオ酪酸の製造方法 |
DE102004041250A1 (de) | 2004-08-26 | 2006-03-02 | Degussa Ag | Herstellung von 2-Hydroxy-4-Methylthiobuttersäure |
CN102009954B (zh) * | 2010-11-30 | 2012-05-09 | 宜宾天原集团股份有限公司 | 一种氯化铵制取氯化氢和氨气的方法 |
KR102118040B1 (ko) * | 2019-08-19 | 2020-06-02 | 에코매니지먼트코리아홀딩스 주식회사 | 폐수로부터 황산암모늄의 회수 방법 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6815005A (es) * | 1968-10-19 | 1970-04-21 | ||
US3902859A (en) * | 1973-02-15 | 1975-09-02 | Koppers Co Inc | Method for separating ammonium sulfate from an aqueous solution of ammonium bisulfate and ammonium sulfate |
JPS5244798A (en) * | 1975-10-06 | 1977-04-08 | Mitsubishi Chem Ind Ltd | Recovery of ammonium sulfate from fuel oil combustion ash |
FR2406623A1 (fr) * | 1977-10-24 | 1979-05-18 | Chemie Linz Ag | Procede pour la preparation d'esters d'acides mono- ou dicarboxyliques par reaction d'amides d'acides carboxyliques avec des alcools, de l'acide sulfurique ou du bisulfate d'ammonium |
GB8313213D0 (en) * | 1983-05-13 | 1983-06-22 | Monsanto Plc | Inorganic salt recovery method |
US4524077A (en) * | 1983-11-14 | 1985-06-18 | Monsanto Company | Liquid 2-hydroxy-4-methylthiobutyric acid and process for the preparation thereof |
ES2005784A6 (es) * | 1988-02-22 | 1989-03-16 | Desarrollo Tecnico Ind S A Soc | Un procedimiento para preparar soluciones acuosas de acido 2-hidroxi-4-metil-tiobutirico. |
US5498790A (en) * | 1993-06-09 | 1996-03-12 | Novus International, Inc. | Regeneration of sulfuric acid from sulfate by-products of 2-hydroxy-4-(methylthio)butyric acid manufacture |
JP3169103B2 (ja) * | 1993-06-29 | 2001-05-21 | ダイセル化学工業株式会社 | 2−ヒドロキシメチルメルカプト酪酸の製造方法 |
RU2179550C2 (ru) * | 1995-06-07 | 2002-02-20 | Новус Интернэшнл, Инк. | Способ получения 2-гидрокси-4-метилтиомасляной кислоты или ее солей |
-
1997
- 1997-09-12 JP JP24859297A patent/JP3804210B2/ja not_active Expired - Fee Related
-
1998
- 1998-03-02 US US09/032,953 patent/US5973198A/en not_active Expired - Lifetime
- 1998-03-03 CN CN98108598A patent/CN1109020C/zh not_active Expired - Lifetime
- 1998-03-03 BR BR9800818-8A patent/BR9800818A/pt not_active IP Right Cessation
- 1998-03-04 DE DE69803707T patent/DE69803707T2/de not_active Expired - Lifetime
- 1998-03-04 EP EP98103840A patent/EP0863135B1/en not_active Expired - Lifetime
- 1998-03-04 ES ES98103840T patent/ES2167818T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0863135A2 (en) | 1998-09-09 |
JP3804210B2 (ja) | 2006-08-02 |
DE69803707D1 (de) | 2002-03-21 |
US5973198A (en) | 1999-10-26 |
BR9800818A (pt) | 2000-04-25 |
EP0863135B1 (en) | 2002-02-06 |
CN1109020C (zh) | 2003-05-21 |
JPH10306072A (ja) | 1998-11-17 |
CN1201031A (zh) | 1998-12-09 |
DE69803707T2 (de) | 2002-08-14 |
EP0863135A3 (en) | 1998-12-09 |
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