GB636035A - Improvements in or relating to process of producing diammonium phosphate and the product resulting therefrom - Google Patents

Improvements in or relating to process of producing diammonium phosphate and the product resulting therefrom

Info

Publication number
GB636035A
GB636035A GB9698/47A GB969847A GB636035A GB 636035 A GB636035 A GB 636035A GB 9698/47 A GB9698/47 A GB 9698/47A GB 969847 A GB969847 A GB 969847A GB 636035 A GB636035 A GB 636035A
Authority
GB
United Kingdom
Prior art keywords
diammonium phosphate
reactor
pipe
phosphate
relating
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
GB9698/47A
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.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical Co
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 Monsanto Chemicals Ltd, Monsanto Chemical Co filed Critical Monsanto Chemicals Ltd
Publication of GB636035A publication Critical patent/GB636035A/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

<PICT:0636035/III/1> Diammonium phosphate is produced by introducing equimolecular proportions of monoammonium phosphate and gaseous ammonia into a closed reactor fitted with a settling leg, containing a saturated solution of diammonium phosphate at a temperature between 70 DEG and 90 DEG C., having a pH value between 6.8 and 7.8, whereby diammonium phosphate crystallizes out, the mother liquor, removed by centrifuging being recirculated to the reactor. Monoammonium phosphate crystals enter the water-cooled reactor 3 through a worm feed 2 from storage hopper 1, excess liquid being drawn off at 4, and ammonia gas enters through pipe 7. Crystals of diammonium phosphate are formed and on sinking are removed from the base 10 of the reactor by worm 11 to centrifuge 13 for subsequent drying in a rotary drier 15. The diammonium phosphate mother liquor passes from the centrifuge 13 through pipe 20 to storage vessel 21 from whence it is recirculated by pipe 23, preferably to the base of the reactor at 24.
GB9698/47A 1946-04-26 1947-04-11 Improvements in or relating to process of producing diammonium phosphate and the product resulting therefrom Expired GB636035A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US636035XA 1946-04-26 1946-04-26

Publications (1)

Publication Number Publication Date
GB636035A true GB636035A (en) 1950-04-19

Family

ID=22050291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9698/47A Expired GB636035A (en) 1946-04-26 1947-04-11 Improvements in or relating to process of producing diammonium phosphate and the product resulting therefrom

Country Status (1)

Country Link
GB (1) GB636035A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010138045A1 (en) * 2009-05-27 2010-12-02 Easymining Sweden Ab Production of ammonium phosphates
CN103613083A (en) * 2013-11-28 2014-03-05 贵州开磷（集团）有限责任公司 Method for producing industrial grade monoammonium phosphate through combination of wet process phosphoric acid and high-purity phosphoric acid
US9738522B2 (en) 2012-06-21 2017-08-22 Easymining Sweden Ab Production of ammonium phosphates
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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010138045A1 (en) * 2009-05-27 2010-12-02 Easymining Sweden Ab Production of ammonium phosphates
CN102448877A (en) * 2009-05-27 2012-05-09 易开采瑞典有限公司 Production of ammonium phosphates
US8658117B2 (en) 2009-05-27 2014-02-25 Easymining Sweden Ab Production of ammonium phosphates
RU2516411C2 (en) * 2009-05-27 2014-05-20 ИзиМайнинг Свиден АБ Obtaining ammonium phosphates
US9738522B2 (en) 2012-06-21 2017-08-22 Easymining Sweden Ab Production of ammonium phosphates
CN103613083A (en) * 2013-11-28 2014-03-05 贵州开磷（集团）有限责任公司 Method for producing industrial grade monoammonium phosphate through combination of wet process phosphoric acid and high-purity phosphoric acid
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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