GB1104663A - Production of ammonium phosphate - Google Patents

Production of ammonium phosphate

Info

Publication number
GB1104663A
GB1104663A GB988765A GB988765A GB1104663A GB 1104663 A GB1104663 A GB 1104663A GB 988765 A GB988765 A GB 988765A GB 988765 A GB988765 A GB 988765A GB 1104663 A GB1104663 A GB 1104663A
Authority
GB
United Kingdom
Prior art keywords
reaction
ortho
production
ammonium polyphosphate
polyphosphate
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
GB988765A
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 GB1104663A publication Critical patent/GB1104663A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates

Landscapes

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

Abstract

Ammonium polyphosphate, i.e. a mixture of the ortho- and non-ortho-forms, which may have a P2O5 content of 56-65%, is produced by introducing continuously gaseous ammonia and orthophosphoric acid, concentrated to 50-58% P2O5, to a reaction zone, which may be maintained at above the solidification temperature of the reaction mass, in which they are reacted at above 300 DEG F., e.g. 400-500 DEG F., and utilizing the heat of reaction to partially dehydrate the phosphate during the reaction. A melt of the polyphosphate is formed, which is continuously removed and separated from water vapour and ammonia under conditions whereby the melt solidifies into dry, non-hygroscopic particles of ammonium polyphosphate.
GB988765A 1964-03-18 1965-03-09 Production of ammonium phosphate Expired GB1104663A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35276464A 1964-03-18 1964-03-18

Publications (1)

Publication Number Publication Date
GB1104663A true GB1104663A (en) 1968-02-28

Family

ID=23386401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB988765A Expired GB1104663A (en) 1964-03-18 1965-03-09 Production of ammonium phosphate

Country Status (2)

Country Link
DE (1) DE1567439A1 (en)
GB (1) GB1104663A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8148870B2 (en) 2006-08-30 2012-04-03 Honda Motor Co., Ltd. Coil assembly for rotating electric machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7805957A (en) * 1978-06-01 1979-12-04 Unie Van Kunstmestfab Bv PROCESS AND EQUIPMENT FOR THE PREPARATION OF A PRODUCT CONTAINING AMMONIUM ORTHOPHOSPHATE AND ANY PRODUCT OBTAINED BY THIS PROCESS.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8148870B2 (en) 2006-08-30 2012-04-03 Honda Motor Co., Ltd. Coil assembly for rotating electric machine

Also Published As

Publication number Publication date
DE1567439A1 (en) 1970-06-25

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