GB345451A - Process of and apparatus for the manufacture of diammonium phosphate - Google Patents

Process of and apparatus for the manufacture of diammonium phosphate

Info

Publication number
GB345451A
GB345451A GB6316/30A GB631630A GB345451A GB 345451 A GB345451 A GB 345451A GB 6316/30 A GB6316/30 A GB 6316/30A GB 631630 A GB631630 A GB 631630A GB 345451 A GB345451 A GB 345451A
Authority
GB
United Kingdom
Prior art keywords
ammonia
saturator
diammonium phosphate
phosphoric acid
absorbed
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
GB6316/30A
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.)
SCIENT ET D ENTPR S IND SOC ET
Original Assignee
SCIENT ET D ENTPR S IND SOC ET
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 SCIENT ET D ENTPR S IND SOC ET filed Critical SCIENT ET D ENTPR S IND SOC ET
Publication of GB345451A publication Critical patent/GB345451A/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)
  • Gas Separation By Absorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treating Waste Gases (AREA)

Abstract

In the production of diammonium phosphate by neutralizing phosphoric acid with ammonia in two stages, the amount of ammonia absorbed in the first stage by the boiling acid being equivalent to more than one molecule per molecule of acid but not more than can be substantially absorbed, the absorption of the complementary amount of ammonia necessary to cause separation of the salt takes place at a temperature of about 60 DEG -70 DEG C. Between two-thirds and three-quarters of the ammonia necessary may be absorbed in the first stage, the neutralization being completed in a second saturator. Air is blown into the saturators to stir the contents and to eliminate the heat generated, the air and steam from the first saturator being used to preheat the mother liquor from the separation of diammonium phosphate, which is then mixed with phosphoric acid and sometimes water, for example part or all of the condensate from the heat exchanger, and fed to the first saturator. The phosphoric acid either before or after the above dilution is used to absorb the ammonia escaping from the second saturator.
GB6316/30A 1929-02-26 1930-02-25 Process of and apparatus for the manufacture of diammonium phosphate Expired GB345451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE345451X 1929-02-26

Publications (1)

Publication Number Publication Date
GB345451A true GB345451A (en) 1931-03-26

Family

ID=6254621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6316/30A Expired GB345451A (en) 1929-02-26 1930-02-25 Process of and apparatus for the manufacture of diammonium phosphate

Country Status (1)

Country Link
GB (1) GB345451A (en)

Similar Documents

Publication Publication Date Title
US2141773A (en) Recovery of fluorine compounds from water vapor containing volatile fluorine compounds
GB345451A (en) Process of and apparatus for the manufacture of diammonium phosphate
GB378670A (en) Improvements in or relating to decomposing raw phosphates
GB346136A (en) An improved process for the production of caramel
GB370996A (en) Process for the production of mixed fertilisers composed of ammonium nitrate, and ammonium sulphate
GB349877A (en) Improvements in and relating to the treatment of phosphate rock and the like
GB165759A (en) Improved process for the manufacture of phosphoric acid
GB423295A (en) A process for the simultaneous manufacture of primary sodium phosphate and boric acid
GB451359A (en) Process for the manufacture of valuable products from boron fluoride and oxy-acids of phosphorus
GB770172A (en) Process and apparatus for the preparation of ammonium sulphate
GB192994A (en) Process for treating cellulose acetate before dyeing
GB436335A (en) An improved process for the production of alkali orthophosphates
GB667901A (en) Improved process for the intensive manufacture of sulphuric acid
GB419641A (en) An improved process for the production of monocalcium phosphate
GB329495A (en)
GB315700A (en) Production of di-ammonium phosphate
GB795879A (en) Process for the preparation of cyanuric acid from urea
GB492392A (en) Improvements in the manufacture and production of concentrated nitric acid and ammonium sulphate
GB348970A (en) Method of producing diammonium phosphate
GB234078A (en) Process for the concentration of diluted nitrous gases
GB356759A (en) Process for the production of mixed salts containing ammoniacal and nitrate-nitrogen jointly
GB352309A (en)
GB442623A (en) An improved process for the production of a neutral mixed fertiliser
GB145038A (en) An improved process for transforming ammonia into a salt for use as a fertilizer
GB141798A (en) Improvements in the manufacture of ammonium sulphate