NL7713753A - Purification of wet-process phosphoric acid - Google Patents

Purification of wet-process phosphoric acid

Info

Publication number
NL7713753A
NL7713753A NL7713753A NL7713753A NL7713753A NL 7713753 A NL7713753 A NL 7713753A NL 7713753 A NL7713753 A NL 7713753A NL 7713753 A NL7713753 A NL 7713753A NL 7713753 A NL7713753 A NL 7713753A
Authority
NL
Netherlands
Prior art keywords
phosphoric acid
wet
purification
process phosphoric
insoluble
Prior art date
Application number
NL7713753A
Other languages
Dutch (nl)
Other versions
NL158150B (en
Original Assignee
Occidental Res & Eng
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 Occidental Res & Eng filed Critical Occidental Res & Eng
Priority to NL7713753.A priority Critical patent/NL158150B/en
Publication of NL7713753A publication Critical patent/NL7713753A/en
Publication of NL158150B publication Critical patent/NL158150B/en

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
    • C01B25/24—Condensed phosphoric acids
    • 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
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
    • C05B13/06—Alkali and alkaline earth meta- or polyphosphate fertilisers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Purification of wet-process phosphoric acid by a process which comprises concentrating wet-process phosphoric acid in a submerged combustion or analogous evaporator to a P2O5 content is not 80% w/w to promote the formation of insoluble impurity-containing phosphate compounds, diluting the concentrate with water to a filterably viscosity, and separating the insoluble impurities from the phosphoric acid soln.
NL7713753.A 1965-11-16 1977-12-12 PROCESS FOR THE PREPARATION OF POTASSIUM POLYPHOSPHATE COMPOUNDS. NL158150B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7713753.A NL158150B (en) 1965-11-16 1977-12-12 PROCESS FOR THE PREPARATION OF POTASSIUM POLYPHOSPHATE COMPOUNDS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6514904A NL155790C (en) 1965-11-16 1965-11-16 PROCESS FOR THE PREPARATION OF PHOSPHORIC ACID WITH HIGH P2O5 CONTENT.
NL7713753.A NL158150B (en) 1965-11-16 1977-12-12 PROCESS FOR THE PREPARATION OF POTASSIUM POLYPHOSPHATE COMPOUNDS.

Publications (2)

Publication Number Publication Date
NL7713753A true NL7713753A (en) 1978-03-31
NL158150B NL158150B (en) 1978-10-16

Family

ID=19794670

Family Applications (2)

Application Number Title Priority Date Filing Date
NL6514904A NL155790C (en) 1965-11-16 1965-11-16 PROCESS FOR THE PREPARATION OF PHOSPHORIC ACID WITH HIGH P2O5 CONTENT.
NL7713753.A NL158150B (en) 1965-11-16 1977-12-12 PROCESS FOR THE PREPARATION OF POTASSIUM POLYPHOSPHATE COMPOUNDS.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL6514904A NL155790C (en) 1965-11-16 1965-11-16 PROCESS FOR THE PREPARATION OF PHOSPHORIC ACID WITH HIGH P2O5 CONTENT.

Country Status (1)

Country Link
NL (2) NL155790C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185075A (en) 1967-11-20 1980-01-22 Occidental Research and Engineering Ltd. Phosphoric acid ammoniation apparatus with water quench

Also Published As

Publication number Publication date
NL6514904A (en) 1967-05-17
NL155790C (en) 1978-02-15
NL158150B (en) 1978-10-16

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Legal Events

Date Code Title Description
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: OCCIDENTAL

V4 Lapsed because of reaching the maximum lifetime of a patent