GB1388145A - Potassium phosphate fertilisers - Google Patents

Potassium phosphate fertilisers

Info

Publication number
GB1388145A
GB1388145A GB2242972A GB2242972A GB1388145A GB 1388145 A GB1388145 A GB 1388145A GB 2242972 A GB2242972 A GB 2242972A GB 2242972 A GB2242972 A GB 2242972A GB 1388145 A GB1388145 A GB 1388145A
Authority
GB
United Kingdom
Prior art keywords
product
reactor
dihydrogen phosphate
potassium dihydrogen
kcl
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
GB2242972A
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.)
Fitzwilton Ltd
Original Assignee
Fitzwilton Ltd
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 Fitzwilton Ltd filed Critical Fitzwilton Ltd
Priority to GB2242972A priority Critical patent/GB1388145A/en
Priority to DE2437748A priority patent/DE2437748A1/en
Priority to IN1776/CAL/1974A priority patent/IN140287B/en
Priority to NL7410654A priority patent/NL7410654A/en
Priority to DD180422A priority patent/DD113739A5/xx
Priority to BE147694A priority patent/BE818945A/en
Priority claimed from BE147694A external-priority patent/BE818945A/en
Publication of GB1388145A publication Critical patent/GB1388145A/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
    • C01B25/30—Alkali metal phosphates
    • C01B25/301—Preparation from liquid orthophosphoric acid or from an acid solution or suspension of orthophosphates
    • 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
    • C01B25/39—Condensed phosphates of alkali metals
    • C01B25/395—Preparation and dehydrating
    • 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

1388145 Preparation of potassium dihydrogen phosphate; fertilizers FITZWILTON Ltd 14 May 1973 [12 May 1972] 22429/72 Headings C1A and C1B Potassium dihydrogen phosphate and soluble polymerized forms of this salt are prepared by reacting KCl and H 3 PO 4 in a molar ratio of P to K of 1 : 1 to 1À25 : 1 and blowing air through the reaction mixture to remove HCl. In an example, fertilizer grade KCl was fed at a constant rate (1800 g./hr.) with phosphonic acid to an air sparged reactor at 250‹ C. The ratio of H 3 PO 4 to potash in the feed was such as to give a product containing 1À1 moles P/mole K. The product from the reactor was passed to a second reactor working under the same conditions and this yielded a product containing 7À7% free acid, expressed as P 2 O 5 and 1À5% chloride. This product was either used directly as a fertilizer or heated with water at 110‹ C. for 2 hours to hydrolyse the phosphates, followed by vacuum drying to yield a hydrolysed product.
GB2242972A 1972-05-12 1972-05-12 Potassium phosphate fertilisers Expired GB1388145A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB2242972A GB1388145A (en) 1972-05-12 1972-05-12 Potassium phosphate fertilisers
DE2437748A DE2437748A1 (en) 1972-05-12 1974-08-06 PROCESS FOR THE PRODUCTION OF POTASSIUM PHOSPHATE OR - POLYPHOSPHATE
IN1776/CAL/1974A IN140287B (en) 1972-05-12 1974-08-07
NL7410654A NL7410654A (en) 1972-05-12 1974-08-08 METHOD FOR THE PREPARATION OF ARTIFICIAL FERTILIZER.
DD180422A DD113739A5 (en) 1972-05-12 1974-08-09
BE147694A BE818945A (en) 1972-05-12 1974-08-16 Potassium (poly)phosphate prodn. - from phosphoric acid and potassium chloride with air-sparging to remove hydrogen chloride

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB2242972A GB1388145A (en) 1972-05-12 1972-05-12 Potassium phosphate fertilisers
DE2437748A DE2437748A1 (en) 1972-05-12 1974-08-06 PROCESS FOR THE PRODUCTION OF POTASSIUM PHOSPHATE OR - POLYPHOSPHATE
NL7410654A NL7410654A (en) 1972-05-12 1974-08-08 METHOD FOR THE PREPARATION OF ARTIFICIAL FERTILIZER.
DD180422A DD113739A5 (en) 1972-05-12 1974-08-09
BE147694A BE818945A (en) 1972-05-12 1974-08-16 Potassium (poly)phosphate prodn. - from phosphoric acid and potassium chloride with air-sparging to remove hydrogen chloride

Publications (1)

Publication Number Publication Date
GB1388145A true GB1388145A (en) 1975-03-26

Family

ID=27507551

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2242972A Expired GB1388145A (en) 1972-05-12 1972-05-12 Potassium phosphate fertilisers

Country Status (5)

Country Link
DD (1) DD113739A5 (en)
DE (1) DE2437748A1 (en)
GB (1) GB1388145A (en)
IN (1) IN140287B (en)
NL (1) NL7410654A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055124A (en) * 1988-10-31 1991-10-08 Alpine Plant Foods Limited Production of low-chloride fertilizers
CN104071762A (en) * 2014-07-24 2014-10-01 武汉东晟捷能科技有限公司 Preparation method of monopotassium phosphate
CN112978698A (en) * 2021-02-22 2021-06-18 徐州恒世食品有限公司 Two-for-two low-energy-consumption production system and production method suitable for various phosphates

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI92820C (en) * 1990-04-06 1995-01-10 Kemira Oy Process for the preparation of alkali metal phosphate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055124A (en) * 1988-10-31 1991-10-08 Alpine Plant Foods Limited Production of low-chloride fertilizers
EP0530409A1 (en) * 1988-10-31 1993-03-10 Alpine Plant Food Limited Production of low-chloride alkali metal phosphates
CN104071762A (en) * 2014-07-24 2014-10-01 武汉东晟捷能科技有限公司 Preparation method of monopotassium phosphate
CN104071762B (en) * 2014-07-24 2015-10-28 武汉东晟捷能科技有限公司 A kind of preparation method of potassium primary phosphate
CN112978698A (en) * 2021-02-22 2021-06-18 徐州恒世食品有限公司 Two-for-two low-energy-consumption production system and production method suitable for various phosphates
CN112978698B (en) * 2021-02-22 2022-08-19 江苏恒世食品科技有限公司 Two-for-two low-energy-consumption production system and production method suitable for various phosphates

Also Published As

Publication number Publication date
DD113739A5 (en) 1975-06-20
IN140287B (en) 1976-10-09
DE2437748A1 (en) 1976-02-26
NL7410654A (en) 1976-02-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee