DE354784C - Process for reducing the acid consumption in the production of dibasic phosphoric acid lime - Google Patents

Process for reducing the acid consumption in the production of dibasic phosphoric acid lime

Info

Publication number
DE354784C
DE354784C DEB95536D DEB0095536D DE354784C DE 354784 C DE354784 C DE 354784C DE B95536 D DEB95536 D DE B95536D DE B0095536 D DEB0095536 D DE B0095536D DE 354784 C DE354784 C DE 354784C
Authority
DE
Germany
Prior art keywords
phosphoric acid
production
lime
reducing
acid
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
DEB95536D
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German (de)
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEB95536D priority Critical patent/DE354784C/en
Application granted granted Critical
Publication of DE354784C publication Critical patent/DE354784C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • C05B11/12—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using aqueous hydrochloric acid

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

Verfahren zur Verminderung des Säureverbrauches bei Herstellung von zweibasisch-phosphorsaurem Kalk.Process for reducing the acid consumption in the production of dibasic phosphoric acid lime.

Zusatz zum Patent 352782. Durch :das Patent 352782 ist ein Verfahren zur Verminderung des Säureverbrauchs bei Herstellung von zweibasisch-phosphorsaurem Kalk geschützt, das dadurch gekennzeichnet ist, daß der aus dem Rohstoff wie üblich durch Säure erhaltene einbasisch-phosphorsaure Kalk bei Gegenwart von Wasser mit entleimten, feinst gemahlenem Knochenmehl in der Wärme behandelt wird.Addendum to Patent 352782. By: Patent 352782 is a process to reduce acid consumption in the production of dibasic phosphoric acid Protected lime, which is characterized in that the raw material as usual monobasic phosphoric acid lime obtained by acid in the presence of water with deglued, finely ground bone meal is treated in the heat.

Versuche haben gezeigt, @daß man bei dieser Umsetzung mit niedrigerer Temperatur auskommt, wenn man dafür einen entsprechenden Druck im Reaktionsgefäß anwendet. Dies hat insofern eine technische Bedeutung, als es nicht leicht ist, das Material während des Prozesses auf einer bestimmt hohen Temperatur zu erhalten, was überdies Kosten verursacht, während sich im geschlossenen Gefäß ganz von selbst eine Druckbildung und -steigerung infolge frei werdender Kohlensäure aus dem Knochenmehl ergibt, denn entleimte Knochen enthalten etwa 3,5 Prozent Kohlensäure in Form von Kalksalz, :die durch d'en Arbeitsprozeß frei wird. Beispiel. Wenn die Umsetzung des Materials bei einer Temperatur von 6o° C 6 Stunden Zeit in Anspruch nimmt, um technisch vollständig zu sein, so wird derselbe Effekt in derselben Zeit erreicht, wenn man nur bei 50° C arbeitet und dafür zum Schluß einen Druck von 3 Atm. erreicht hat. Wärme und Druck können sich also bis zu einem gewissen Grad gegenseitig ersetzen.Experiments have shown that you can use this implementation with lower Temperature is sufficient if there is a corresponding pressure in the reaction vessel applies. This is of technical importance in that it is not easy to keep the material at a certain high temperature during the process, which, moreover, causes costs, while in the closed vessel it is completely self-contained a pressure build-up and increase as a result of the carbon dioxide released from the bone meal results, because degelatinized bones contain about 3.5 percent carbonic acid in the form of Lime salt: which is released by the work process. Example. When the implementation of the material at a temperature of 60 ° C takes 6 hours to complete to be technically complete, the same effect is achieved in the same time if you only work at 50 ° C and then at the end a pressure of 3 atm. achieved Has. So heat and pressure can replace each other to a certain extent.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verminderung des Säureverbrauchs bei Herstellung von zweibasisch-phosphorsaurem Kalk nach Patent 352782, dadurch gekennzeichnet, daß die Umsetzung zwischen einbasisch-phosphorsaurem Kalk und feingemahlenem entleimten Knochenmehl unter Druck und Wärme vorgenommen wirrt, wobei der Druck der infolge der Umsetzung im geschlossenen Gefäß sich entwickelnden Kohlensäure entnommen wird. PATENT CLAIM: Process for reducing the acid consumption in the production of dibasic phosphoric acid lime according to Patent 352782, characterized in that the reaction between monobasic phosphoric acid lime and finely ground, degummed bone meal is carried out under pressure and heat, the pressure resulting from the reaction in a closed vessel developing carbon dioxide is removed.
DEB95536D 1920-08-20 1920-08-20 Process for reducing the acid consumption in the production of dibasic phosphoric acid lime Expired DE354784C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB95536D DE354784C (en) 1920-08-20 1920-08-20 Process for reducing the acid consumption in the production of dibasic phosphoric acid lime

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB95536D DE354784C (en) 1920-08-20 1920-08-20 Process for reducing the acid consumption in the production of dibasic phosphoric acid lime

Publications (1)

Publication Number Publication Date
DE354784C true DE354784C (en) 1922-06-15

Family

ID=6988197

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB95536D Expired DE354784C (en) 1920-08-20 1920-08-20 Process for reducing the acid consumption in the production of dibasic phosphoric acid lime

Country Status (1)

Country Link
DE (1) DE354784C (en)

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