GB348970A - Method of producing diammonium phosphate - Google Patents

Method of producing diammonium phosphate

Info

Publication number
GB348970A
GB348970A GB24141/30A GB2414130A GB348970A GB 348970 A GB348970 A GB 348970A GB 24141/30 A GB24141/30 A GB 24141/30A GB 2414130 A GB2414130 A GB 2414130A GB 348970 A GB348970 A GB 348970A
Authority
GB
United Kingdom
Prior art keywords
phosphoric acid
supplied
saturator
ammonia
phosphate
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
GB24141/30A
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.)
KUNSTDUENGER PATENT VERWERTUNG
Original Assignee
KUNSTDUENGER PATENT VERWERTUNG
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 KUNSTDUENGER PATENT VERWERTUNG filed Critical KUNSTDUENGER PATENT VERWERTUNG
Publication of GB348970A publication Critical patent/GB348970A/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
    • C01B25/26—Phosphates
    • C01B25/28—Ammonium phosphates
    • 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
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/405—Polyphosphates of ammonium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

Diammonium phosphate is made by absorbing ammonia in a boiling p solution of phosphoric acid or monoammonium phosphate, the escaping ammoniacal steam being supplied to a solution containing phosphoric acid. Ammonia may be supplied to a saturator containing a boiling concentrated monoammonium phosphate solution, and the escaping ammoniacal steam supplied to a dilute phosphoric acid solution produced for example by leaching phosphate rock with sulphuric acid or with another mineral acid and alkali sulphate. The phosphoric acid is preferably preheated to boiling and is in such quantity that the monoammonium phosphate produced corresponds in amount to that used in the first saturator. The escaping steam may be used to preheat the phosphoric acid. In order to produce sufficient of the mono-salt in the second saturator, excess of ammonia may be supplied to the first saturator. Crystals of diammonium phosphate are separated directly or after cooling in a centrifuge, the mother liquor being returned together with the next charge of monosalt from the second saturater, which is first freed from the precipitated impurities of iron, aluminium, calcium, &c., and concentrated. Alternatively, phosphoric acid obtained as above and concentrated is neutralized directly in a series of absorption vessels, to the last of which ammonia is supplied until diammonium phosphate is formed. Crystals are separated, the vessel then being recharged with phosphoric acid and made the first of the series, the mother liquor being introduced into the last vessel of the series.
GB24141/30A 1929-08-23 1930-08-12 Method of producing diammonium phosphate Expired GB348970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE348970X 1929-08-23

Publications (1)

Publication Number Publication Date
GB348970A true GB348970A (en) 1931-05-21

Family

ID=20308576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24141/30A Expired GB348970A (en) 1929-08-23 1930-08-12 Method of producing diammonium phosphate

Country Status (1)

Country Link
GB (1) GB348970A (en)

Cited By (2)

* 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
CN111498821A (en) * 2020-04-23 2020-08-07 湖北兴发化工集团股份有限公司 Process and device for producing diammonium hydrogen phosphate and ammonium dihydrogen phosphate by taking phosphoric acid as raw material

Cited By (2)

* 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
CN111498821A (en) * 2020-04-23 2020-08-07 湖北兴发化工集团股份有限公司 Process and device for producing diammonium hydrogen phosphate and ammonium dihydrogen phosphate by taking phosphoric acid as raw material

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