FR2375143A1 - PURIFICATION OF PHOSPHORIC ACID - Google Patents

PURIFICATION OF PHOSPHORIC ACID

Info

Publication number
FR2375143A1
FR2375143A1 FR7738449A FR7738449A FR2375143A1 FR 2375143 A1 FR2375143 A1 FR 2375143A1 FR 7738449 A FR7738449 A FR 7738449A FR 7738449 A FR7738449 A FR 7738449A FR 2375143 A1 FR2375143 A1 FR 2375143A1
Authority
FR
France
Prior art keywords
section
organic solvent
phosphoric acid
impurities
organic
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.)
Granted
Application number
FR7738449A
Other languages
French (fr)
Other versions
FR2375143B1 (en
Inventor
Yoichi Hiraga
Mitsuo Kikuchi
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.)
Tosoh Corp
Original Assignee
Toyo Soda Manufacturing Co Ltd
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 Toyo Soda Manufacturing Co Ltd filed Critical Toyo Soda Manufacturing Co Ltd
Publication of FR2375143A1 publication Critical patent/FR2375143A1/en
Application granted granted Critical
Publication of FR2375143B1 publication Critical patent/FR2375143B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/234—Purification; Stabilisation; Concentration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

a. Procédé de purification de l'acide phosphorique. b. Ce procédé comprend une première section d'extraction des impuretés organiques pour le mettre en contact avec un solvant organique afin d'extraire sélectivement les impuretées organiques vers la phase solvant organique dans des conditions où les impuretés à base de fer ne sont pratiquement pas extraites, et une seconde section d'extraction de l'acide pour extraire l'acide phosphorique ne contenant pratiquement pas d'impuretés organiques obtenu dans la première section avec un solvant organique afin d'obtenir l'acide phosphorique purifié, une partie de la phase d'extrait dans la seconde section étant utilisée comme solvant organique dans la première section, les impuretés organiques étant éliminées de la phase solvant organique obtenu dans la première section, et au moins une partie de la phase solvant organique résultante étant recyclée vers la seconde section. c. Obtention d'acide phosphorique purifié utilisable dans l'industrie en pharmacie ou comme additif pour aliments.at. Process for the purification of phosphoric acid. b. This process comprises a first section for extracting organic impurities to bring it into contact with an organic solvent in order to selectively extract the organic impurities to the organic solvent phase under conditions where the iron-based impurities are practically not extracted, and a second acid extraction section for extracting the phosphoric acid substantially free of organic impurities obtained in the first section with an organic solvent to obtain the purified phosphoric acid, part of the phase d The extract in the second section being used as an organic solvent in the first section, the organic impurities being removed from the organic solvent phase obtained in the first section, and at least part of the resulting organic solvent phase being recycled to the second section. vs. Obtaining purified phosphoric acid which can be used in the pharmaceutical industry or as a food additive.

FR7738449A 1976-12-27 1977-12-20 PURIFICATION OF PHOSPHORIC ACID Granted FR2375143A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15634876A JPS5380389A (en) 1976-12-27 1976-12-27 Extractive purification method for wet-process phosphoric acid

Publications (2)

Publication Number Publication Date
FR2375143A1 true FR2375143A1 (en) 1978-07-21
FR2375143B1 FR2375143B1 (en) 1981-10-23

Family

ID=15625786

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738449A Granted FR2375143A1 (en) 1976-12-27 1977-12-20 PURIFICATION OF PHOSPHORIC ACID

Country Status (6)

Country Link
JP (1) JPS5380389A (en)
BE (1) BE862267A (en)
DE (1) DE2753820C3 (en)
FR (1) FR2375143A1 (en)
GB (1) GB1576367A (en)
IT (1) IT1089147B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208389A (en) * 1976-12-27 1980-06-17 Toyo Soda Manufacturing Company, Limited Purification of phosphoric acid
FR2470090A1 (en) * 1979-11-20 1981-05-29 Rhone Poulenc Ind PROCESS FOR PURIFYING A PHOSPHORIC ACID FROM WETWAY

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844301C3 (en) * 1978-10-11 1982-03-04 Institute of Nuclear Energy Research Atomic Energy Council, Lung-Tan Process for the purification of a wet phosphoric acid solution intended for the extraction of uranium by means of solvent extraction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2065381A1 (en) * 1970-06-16 1973-05-17 Giulini Gmbh Geb Phosphoric acid purification - by solvent extraction - with a solvent capable of absorbing at least 9% water
US3694153A (en) * 1970-10-30 1972-09-26 Audrey E Stern Liquid-liquid extraction process for the purification of phosphoric acid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208389A (en) * 1976-12-27 1980-06-17 Toyo Soda Manufacturing Company, Limited Purification of phosphoric acid
FR2470090A1 (en) * 1979-11-20 1981-05-29 Rhone Poulenc Ind PROCESS FOR PURIFYING A PHOSPHORIC ACID FROM WETWAY
EP0030487A1 (en) * 1979-11-20 1981-06-17 Rhone-Poulenc Chimie Process for the purification of a wet-process phophoric acid

Also Published As

Publication number Publication date
DE2753820A1 (en) 1978-06-29
GB1576367A (en) 1980-10-08
FR2375143B1 (en) 1981-10-23
DE2753820C3 (en) 1981-06-19
BE862267A (en) 1978-06-23
IT1089147B (en) 1985-06-18
DE2753820B2 (en) 1980-07-03
JPS5426519B2 (en) 1979-09-04
JPS5380389A (en) 1978-07-15

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Legal Events

Date Code Title Description
ST Notification of lapse