GB1245808A - Concentration of phosphoric acid - Google Patents

Concentration of phosphoric acid

Info

Publication number
GB1245808A
GB1245808A GB5407568A GB5407568A GB1245808A GB 1245808 A GB1245808 A GB 1245808A GB 5407568 A GB5407568 A GB 5407568A GB 5407568 A GB5407568 A GB 5407568A GB 1245808 A GB1245808 A GB 1245808A
Authority
GB
United Kingdom
Prior art keywords
acid
conduit
evaporator
phosphoric acid
concentrated
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
Application number
GB5407568A
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.)
Dorr Oliver Inc
Original Assignee
Dorr Oliver Inc
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 Dorr Oliver Inc filed Critical Dorr Oliver Inc
Publication of GB1245808A publication Critical patent/GB1245808A/en
Expired 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
    • C01B25/2343—Concentration concomitant with purification, e.g. elimination of fluorine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

1,245,808. Evaporators, flash type; concentration of phosphoric acid. DORR-OLIVER Inc. 14 Nov., 1968 [14 Nov., 1967], No. 54075/68. Heading B1B. Phosphoric acid, produced by digestion of phosphate rock with sulphuric acid, is concentrated by introducing it through inlet 11 and conduit 12 into heat exchanger 16, where it is heated to 80‹C., and then passing the hot acid up conduit 18 into a vacuum evaporator 24, where water-vapour flashes at the surface 26 of the acid. The concentrated acid flows over weir 28 into vapour-release chamber 30, and some of it is withdrawn through leg 32, while the remainder is recycled to the evaporator through conduit 12. Heat-exchanger 16 is of the tubular type and is disposed horizontally. By adjustment of the temperature and/or pressure in the evaporator, it is possible to control the number and size of the gypsum crystals present in the discharged concentrated acid product.
GB5407568A 1967-11-14 1968-11-14 Concentration of phosphoric acid Expired GB1245808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68282267A 1967-11-14 1967-11-14

Publications (1)

Publication Number Publication Date
GB1245808A true GB1245808A (en) 1971-09-08

Family

ID=24741297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5407568A Expired GB1245808A (en) 1967-11-14 1968-11-14 Concentration of phosphoric acid

Country Status (4)

Country Link
DE (1) DE1808377A1 (en)
FR (1) FR1591796A (en)
GB (1) GB1245808A (en)
SE (1) SE340271B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE457169B (en) * 1986-06-19 1988-12-05 Sandvik Ab METALLIC SINGLE OR MULTI-PASS HEAT EXCHANGER LOCATED IN A CIRCUIT FOR FORCING CIRCULATORY DUMPING BY CONCENTRATION OF PHOSPHORIC ACID PREPARED ACCORDING TO THE WATER PROCESS
CN109264687A (en) * 2018-10-18 2019-01-25 昆明理工大学 A kind of phosphoric acid microwave flash distillation prepares the method and apparatus of polyphosphoric acid

Also Published As

Publication number Publication date
FR1591796A (en) 1970-05-04
SE340271B (en) 1971-11-15
DE1808377A1 (en) 1969-06-26

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