DE69521979T2 - Verfahren zur Herstellung hochreiner Terephthalsäure - Google Patents
Verfahren zur Herstellung hochreiner TerephthalsäureInfo
- Publication number
- DE69521979T2 DE69521979T2 DE69521979T DE69521979T DE69521979T2 DE 69521979 T2 DE69521979 T2 DE 69521979T2 DE 69521979 T DE69521979 T DE 69521979T DE 69521979 T DE69521979 T DE 69521979T DE 69521979 T2 DE69521979 T2 DE 69521979T2
- Authority
- DE
- Germany
- Prior art keywords
- dispersion medium
- column
- terephthalic acid
- slurry
- sludge
- 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
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title claims description 226
- 238000000034 method Methods 0.000 title claims description 85
- 230000008569 process Effects 0.000 title claims description 27
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000002612 dispersion medium Substances 0.000 claims description 183
- 239000010802 sludge Substances 0.000 claims description 117
- 239000002002 slurry Substances 0.000 claims description 68
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 65
- 239000007788 liquid Substances 0.000 claims description 47
- 239000002245 particle Substances 0.000 claims description 38
- 239000013078 crystal Substances 0.000 claims description 27
- 238000007254 oxidation reaction Methods 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 23
- 239000007791 liquid phase Substances 0.000 claims description 16
- 230000003647 oxidation Effects 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000012046 mixed solvent Substances 0.000 claims description 4
- -1 p-phenylene compound Chemical class 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims 2
- 125000001424 substituent group Chemical group 0.000 claims 1
- 239000002904 solvent Substances 0.000 description 13
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 238000002425 crystallisation Methods 0.000 description 11
- 230000008025 crystallization Effects 0.000 description 11
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 10
- 238000000746 purification Methods 0.000 description 10
- 238000009903 catalytic hydrogenation reaction Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 230000005484 gravity Effects 0.000 description 8
- 238000004062 sedimentation Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- GOUHYARYYWKXHS-UHFFFAOYSA-N 4-formylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=O)C=C1 GOUHYARYYWKXHS-UHFFFAOYSA-N 0.000 description 6
- 239000005711 Benzoic acid Substances 0.000 description 6
- 235000010233 benzoic acid Nutrition 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- 238000013019 agitation Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229940011182 cobalt acetate Drugs 0.000 description 3
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229940071125 manganese acetate Drugs 0.000 description 3
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012066 reaction slurry Substances 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/14—Monocyclic dicarboxylic acids
- C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
- C07C63/26—1,4 - Benzenedicarboxylic acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D12/00—Displacing liquid, e.g. from wet solids or from dispersions of liquids or from solids in liquids, by means of another liquid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32195094 | 1994-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69521979D1 DE69521979D1 (de) | 2001-09-06 |
| DE69521979T2 true DE69521979T2 (de) | 2001-11-15 |
Family
ID=18138247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69521979T Expired - Lifetime DE69521979T2 (de) | 1994-12-26 | 1995-12-07 | Verfahren zur Herstellung hochreiner Terephthalsäure |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5712412A (OSRAM) |
| EP (1) | EP0719576B1 (OSRAM) |
| KR (1) | KR100352693B1 (OSRAM) |
| DE (1) | DE69521979T2 (OSRAM) |
| TW (1) | TW318838B (OSRAM) |
Families Citing this family (46)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1045667A (ja) * | 1996-07-29 | 1998-02-17 | Mitsubishi Gas Chem Co Inc | 分散媒置換装置を用いた高純度テレフタル酸の製造方法 |
| US6818132B2 (en) * | 1999-12-17 | 2004-11-16 | Ticona Gmbh | Method and device for separating solids from a liquid phase |
| US7276625B2 (en) * | 2002-10-15 | 2007-10-02 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
| BR0316462A (pt) * | 2002-12-09 | 2005-10-11 | Eastman Chem Co | Processos para reduzir uma suspensão de ácido carboxìlico purificado, para purificar um produto de oxidação em estágios, para produzir um produto de ácido carboxìlico purificado, e, suspensão de ácido carboxìlico purificado |
| US7132566B2 (en) * | 2003-09-22 | 2006-11-07 | Eastman Chemical Company | Process for the purification of a crude carboxylic acid slurry |
| US7161027B2 (en) * | 2002-12-09 | 2007-01-09 | Eastman Chemical Company | Process for the oxidative purification of terephthalic acid |
| US7074954B2 (en) * | 2002-12-09 | 2006-07-11 | Eastman Chemical Company | Process for the oxidative purification of terephthalic acid |
| US7193109B2 (en) * | 2003-03-06 | 2007-03-20 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
| WO2005033058A1 (ja) * | 2003-10-02 | 2005-04-14 | Mitsubishi Gas Chemical Company, Inc. | 高純度テレフタル酸の製造方法 |
| US7214760B2 (en) * | 2004-01-15 | 2007-05-08 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
| US7546747B2 (en) * | 2004-01-15 | 2009-06-16 | Eastman Chemical Company | Process for production of a dried carboxylic acid cake suitable for use in polyester production |
| US7910769B2 (en) * | 2004-09-02 | 2011-03-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7586000B2 (en) * | 2004-09-02 | 2009-09-08 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7568361B2 (en) * | 2004-09-02 | 2009-08-04 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7381836B2 (en) * | 2004-09-02 | 2008-06-03 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7608732B2 (en) * | 2005-03-08 | 2009-10-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7692037B2 (en) | 2004-09-02 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7482482B2 (en) * | 2004-09-02 | 2009-01-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7741515B2 (en) * | 2004-09-02 | 2010-06-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7507857B2 (en) * | 2004-09-02 | 2009-03-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7371894B2 (en) * | 2004-09-02 | 2008-05-13 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7692036B2 (en) * | 2004-11-29 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7582793B2 (en) | 2004-09-02 | 2009-09-01 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7495125B2 (en) * | 2004-09-02 | 2009-02-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7504535B2 (en) | 2004-09-02 | 2009-03-17 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7615663B2 (en) * | 2004-09-02 | 2009-11-10 | Eastman Chemical Company | Optimized production of aromatic dicarboxylic acids |
| US7608733B2 (en) * | 2004-09-02 | 2009-10-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7572932B2 (en) * | 2004-09-02 | 2009-08-11 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7399882B2 (en) * | 2004-09-02 | 2008-07-15 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7572936B2 (en) * | 2004-09-02 | 2009-08-11 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7589231B2 (en) * | 2004-09-02 | 2009-09-15 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7390921B2 (en) * | 2004-09-02 | 2008-06-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7361784B2 (en) * | 2004-09-02 | 2008-04-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US20060047153A1 (en) * | 2004-09-02 | 2006-03-02 | Wonders Alan G | Optimized liquid-phase oxidation |
| US7563926B2 (en) | 2004-09-02 | 2009-07-21 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7683210B2 (en) * | 2004-09-02 | 2010-03-23 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7884232B2 (en) * | 2005-06-16 | 2011-02-08 | Eastman Chemical Company | Optimized liquid-phase oxidation |
| US7355068B2 (en) * | 2006-01-04 | 2008-04-08 | Eastman Chemical Company | Oxidation system with internal secondary reactor |
| US7358389B2 (en) * | 2006-01-04 | 2008-04-15 | Eastman Chemical Company | Oxidation system employing internal structure for enhanced hydrodynamics |
| US20070179312A1 (en) * | 2006-02-02 | 2007-08-02 | O'meadhra Ruairi Seosamh | Process for the purification of a crude carboxylic axid slurry |
| ES2615125T3 (es) * | 2006-06-12 | 2017-06-05 | Mitsubishi Gas Chemical Company, Inc. | Método de sustitución de medio de dispersión |
| US9144750B2 (en) | 2006-06-12 | 2015-09-29 | Mitsubishi Gas Chemical Company, Ltd. | Method of replacing dispersion medium and apparatus therefor |
| US8247605B2 (en) * | 2006-07-24 | 2012-08-21 | Mitsubishi Gas Chemical Company, Inc. | Method of replacing dispersion medium |
| US8455680B2 (en) | 2008-01-15 | 2013-06-04 | Eastman Chemical Company | Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
| US8614350B2 (en) | 2008-01-15 | 2013-12-24 | Eastman Chemical Company | Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
| CN102040512B (zh) * | 2009-10-13 | 2014-03-05 | 中国石油化工股份有限公司 | 粗对苯二甲酸母液置换方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587744A (en) | 1978-12-26 | 1980-07-02 | Asahi Chem Ind Co Ltd | Recovery of terephthalic acid |
| US4201871A (en) * | 1978-02-23 | 1980-05-06 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for recovering terephthalic acid |
| JPS5753431A (en) | 1980-07-21 | 1982-03-30 | Haakofuina | Improved washing column washing process for crude terephthalic acid |
| JP2545103B2 (ja) * | 1987-12-17 | 1996-10-16 | 三井石油化学工業株式会社 | テレフタル酸スラリ―の分散媒交換方法 |
-
1995
- 1995-11-27 US US08/562,764 patent/US5712412A/en not_active Expired - Lifetime
- 1995-11-29 TW TW084112701A patent/TW318838B/zh not_active IP Right Cessation
- 1995-12-07 EP EP95119318A patent/EP0719576B1/en not_active Expired - Lifetime
- 1995-12-07 DE DE69521979T patent/DE69521979T2/de not_active Expired - Lifetime
- 1995-12-26 KR KR1019950072352A patent/KR100352693B1/ko not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69521979D1 (de) | 2001-09-06 |
| EP0719576A1 (en) | 1996-07-03 |
| TW318838B (OSRAM) | 1997-11-01 |
| EP0719576B1 (en) | 2001-08-01 |
| KR960022437A (ko) | 1996-07-18 |
| US5712412A (en) | 1998-01-27 |
| KR100352693B1 (ko) | 2002-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69521979T2 (de) | Verfahren zur Herstellung hochreiner Terephthalsäure | |
| DE2437846C2 (OSRAM) | ||
| DE69818651T2 (de) | Herstellung von terephthalsäure | |
| DE60110973T2 (de) | Verfahren zur Wiedergewinnung von Kristallen aus einer Aufschlämmung | |
| DE69523946T2 (de) | Verfahren zur abtrennung von para-xylol das wenigstens zwei stufen zur kristalisierung auf hoher temperatur | |
| DE2708034C3 (de) | Verfahren und Vorrichtung zur Herstellung von aromatischen Dicarbonsäuren | |
| EP0229356B1 (de) | Mehrstufige Anordnung zur Gegenstromwaschung, deren Anwendung und zugehörige Verfahrensmassnahmen | |
| DE69227849T2 (de) | Verfahren und Herstellung eines Kristallinadduktes von Bisphenol A mit Phenol und Vorrichtung dafür | |
| DE68914058T2 (de) | Verfahren und Vorrichtung zum Kristallisieren eines Minerals. | |
| DE69507215T2 (de) | Reinigung von Bisphenol-A | |
| DE2906945A1 (de) | Verfahren zur gewinnung von terephthalsaeure | |
| DD280096A5 (de) | Verfahren zum austausch eines dispersionsmediums der terephthalsaeureaufschlaemmung | |
| EP0065775B1 (de) | Verfahren und Vorrichtung zur kontinuierlichen Verdampfungskristallisation | |
| DE2835375C3 (de) | Verfahren zur Gewinnung einer Terephthalsäuresuspension mit verringertem Gehalt an Verunreinigungen durch Behandlung mit einem Flüssigkeitszyklon | |
| DE3203818A1 (de) | Verfahren und vorrichtung zur stofftrennung eines fluessigen gemisches durch fraktionierte kristallisation | |
| DE2061111C2 (de) | Kontinuierliches Verfahren zum Kristallisieren von Lösungsmittel aus einer Lösung | |
| DE2714985A1 (de) | Verfahren zur reinigung von terephthalsaeure | |
| EP0899009A2 (de) | Verfahren zur Herstellung von Feststoffen durch Fällung | |
| DE69912636T2 (de) | Verbessertes verfahren zur herstellung von hochreinen aromatischen carbonsäuren | |
| DE2165346C3 (de) | Kühlvorrichtung | |
| DE69806016T2 (de) | Verfahren zum scheiden von reiner terephthalsäure | |
| EP0370365B1 (de) | Verfahren und Vorrichtung zur kontinuierlichen Zuckerkristallisation | |
| EP1064993B1 (de) | Auftriebsfreistrahlreaktor und seine Verwendung | |
| DE3121669A1 (de) | Kontinuierliches verfahren zur reaktion von in fluessiger phase vorliegenden komponenten mit in koerniger form vorliegenden komponenten | |
| DE69827141T2 (de) | Verfahren zur raffinierung von kristallinem material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |