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RU2000133332A - METHOD FOR REGENERATING FLUORATED ALKANIC ACIDS FROM WASTE WATERS - Google Patents

METHOD FOR REGENERATING FLUORATED ALKANIC ACIDS FROM WASTE WATERS

Info

Publication number
RU2000133332A
RU2000133332A RU2000133332/04A RU2000133332A RU2000133332A RU 2000133332 A RU2000133332 A RU 2000133332A RU 2000133332/04 A RU2000133332/04 A RU 2000133332/04A RU 2000133332 A RU2000133332 A RU 2000133332A RU 2000133332 A RU2000133332 A RU 2000133332A
Authority
RU
Russia
Prior art keywords
fluorinated
acid
solids
waste water
highly dispersed
Prior art date
Application number
RU2000133332/04A
Other languages
Russian (ru)
Other versions
RU2226186C2 (en
Inventor
Бернд ФЕЛИКС
Райнхард ЗУЛЬЦБАХ
Штефан ФЮРЕР
Томас КАЙЗЕР
Хаген КНИП
Армин БУДЕСХАЙМ
Original Assignee
Динеон Гмбх Унд Ко. Кг
Аксива Гмбх
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
Priority claimed from DE19824614A external-priority patent/DE19824614A1/en
Application filed by Динеон Гмбх Унд Ко. Кг, Аксива Гмбх filed Critical Динеон Гмбх Унд Ко. Кг
Publication of RU2000133332A publication Critical patent/RU2000133332A/en
Application granted granted Critical
Publication of RU2226186C2 publication Critical patent/RU2226186C2/en

Links

Claims (9)

1. Способ получения фторированных кислот-эмульгаторов из отработанной воды, отличающийся тем, что сначала из отработанной воды из полимеризации фторированных мономеров удаляют высокодисперсные твердые вещества и/или переводимые в твердые вещества компоненты, непосредственно после этого фторированные кислоты-эмульгаторы связывают на анионообменной смоле и из нее элюируют эти фторированные эмульгаторные кислоты.1. A method of producing fluorinated acid emulsifiers from waste water, characterized in that first, highly dispersed solids and / or components converted to solids are removed from the waste water from the polymerization of fluorinated monomers, immediately after that the fluorinated acid emulsifiers are bonded to an anion exchange resin and from these fluorinated emulsifier acids elute. 2. Способ по п. 1, отличающийся тем, что высокодисперсные твердые вещества осаждаются. 2. The method according to p. 1, characterized in that highly dispersed solids are deposited. 3. Способ по п. 1, отличающийся тем, что высокодисперсные твердые вещества механически удаляют. 3. The method according to p. 1, characterized in that highly dispersed solids are mechanically removed. 4. Способ по п. 1, отличающийся тем, что переводимые в твердые вещества компоненты осаждают. 4. The method according to p. 1, characterized in that the components transferred to solids are precipitated. 5. Способ по одному или нескольким из пп. 1, 2 и 4, отличающийся тем, что осажденные вещества отделяют седиментацией. 5. The method according to one or more of paragraphs. 1, 2 and 4, characterized in that the precipitated substances are separated by sedimentation. 6. Способ по одному или нескольким из пп. 1, 2 и 4, отличающийся тем, что осажденные вещества отделяют флотацией. 6. The method according to one or more of claims. 1, 2 and 4, characterized in that the precipitated substances are separated by flotation. 7. Способ по одному или нескольким из предыдущих пунктов, отличающийся тем, что для регенерации чистых фторированных кислот-эмульгаторов с очень низким содержанием щавелевой кислоты отработанную воду обрабатывают при интенсивном перемешивании с раствором соли алюминия, непосредственно после этого доводят показатель рН до 6-7,5 раствором известкового молока, образующийся осадок отфильтровывают и раствор, доведенный серной кислотой до показателя рН менее 7, пропускают через ионообменник. 7. The method according to one or more of the preceding paragraphs, characterized in that for the regeneration of pure fluorinated acid emulsifiers with a very low content of oxalic acid, the waste water is treated with vigorous stirring with an aluminum salt solution, immediately after that the pH is adjusted to 6-7, 5 with a solution of milk of lime, the precipitate formed is filtered off and the solution brought with sulfuric acid to a pH of less than 7 is passed through an ion exchanger. 8. Способ по одному или нескольким из предыдущих пунктов, отличающийся тем, что применяемая анионообменная смола является сильноосновной. 8. The method according to one or more of the preceding paragraphs, characterized in that the used anion exchange resin is strongly basic. 9. Способ по одному или нескольким из предыдущих пунктов, отличающийся тем, что элюирование фторированной кислоты-эмульгатора из анионообменника производят смесью из разбавленной минеральной кислоты и органического растворителя. 9. The method according to one or more of the preceding paragraphs, characterized in that the elution of the fluorinated acid emulsifier from the anion exchanger is carried out with a mixture of dilute mineral acid and an organic solvent.
RU2000133332/04A 1998-06-02 1999-05-27 Method of recovering fluorinated alkane acids from waste waters RU2226186C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19824614A DE19824614A1 (en) 1998-06-02 1998-06-02 Process for the recovery of fluorinated alkanoic acids from waste water
DE19824614.5 1998-06-02

Publications (2)

Publication Number Publication Date
RU2000133332A true RU2000133332A (en) 2002-12-10
RU2226186C2 RU2226186C2 (en) 2004-03-27

Family

ID=7869667

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2000133332/04A RU2226186C2 (en) 1998-06-02 1999-05-27 Method of recovering fluorinated alkane acids from waste waters

Country Status (16)

Country Link
US (1) US6613941B1 (en)
EP (2) EP1084097B1 (en)
JP (1) JP3678651B2 (en)
KR (1) KR100518480B1 (en)
CN (1) CN1134403C (en)
AT (2) ATE307793T1 (en)
AU (1) AU4370199A (en)
CA (1) CA2334105A1 (en)
DE (3) DE19824614A1 (en)
ES (1) ES2176137T3 (en)
HU (1) HUP0102469A2 (en)
PL (1) PL193358B1 (en)
RU (1) RU2226186C2 (en)
TR (1) TR200003530T2 (en)
WO (1) WO1999062858A1 (en)
ZA (1) ZA200006907B (en)

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