PL422437A1 - Method for obtaining potassium sulphate acid salt with low content of chlorides and food grade quality hydrochloric acid - Google Patents
Method for obtaining potassium sulphate acid salt with low content of chlorides and food grade quality hydrochloric acidInfo
- Publication number
- PL422437A1 PL422437A1 PL422437A PL42243717A PL422437A1 PL 422437 A1 PL422437 A1 PL 422437A1 PL 422437 A PL422437 A PL 422437A PL 42243717 A PL42243717 A PL 42243717A PL 422437 A1 PL422437 A1 PL 422437A1
- Authority
- PL
- Poland
- Prior art keywords
- acid
- hydrochloric acid
- potassium
- mass
- mixture
- Prior art date
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- Fertilizers (AREA)
Abstract
Przedmiotem niniejszego zgłoszenia jest sposób otrzymywania kwaśnej soli siarczanu potasu i kwasu solnego z chlorku potasu i kwasu siarkowego polegający na tym, że w pierwszym cyklu produkcyjnym do roztworu lub wodnej zawiesiny chlorku potasu, a w następnych cyklach do mieszaniny chlorku potasu przygotowanej na bazie ługów pochodzących z oddzielenia kwaśnej soli siarczanu potasu dozuje się mieszając kwas siarkowy zawierający 60 do 98% masowych H2SO4 zachowując stosunek molowy H2SO4 do KCl od 1:1 do 1:2, w odniesieniu do reakcji opisującej powstawanie KHSO4, a tak otrzymana mieszanina reakcyjna ma zawierać 45 do 65% masowych wody. Mieszaninę podgrzewa się w kolejnym etapie do temperatury 70 do 90°C i otrzymany klarowny roztwór zatęża się w celu odparowania wprowadzonej z surowcami wody, a powstałe opary chlorowodoru i pary wodnej kieruje się do układu absorpcji i otrzymuje kwas solny, przy czym do węzła absorpcji wprowadza się dodatkowo wodę w ilości pozwalającej na uzyskanie spożywczego kwasu solnego zawierającego minimum 28% masowych HCl. Otrzymany po odparowaniu roztwór schładza się do temperatury 30°C - 50°C a następnie oddziela wytrącone kryształy kwaśnej soli siarczanu potasu, a ługi macierzyste w całości zawraca się do kolejnego cyklu produkcyjnego w celu ponownego sporządzenia mieszaniny reakcyjnej, a otrzymane kryształy zawierające głównie kwaśne sole siarczanu potasu i pozostałe w nich kwaśne ługi macierzyste, stanowią produkt końcowy przeznaczony głównie do komponowania nawozów wieloskładnikowych.The subject of this application is a method for obtaining the acid potassium sulfate and hydrochloric acid from potassium chloride and sulfuric acid, consisting in the first production cycle for a solution or aqueous suspension of potassium chloride, and in subsequent cycles for a mixture of potassium chloride prepared on the basis of separation liquors acid potassium sulfate salt is dosed by mixing sulfuric acid containing 60 to 98% by mass H2SO4 maintaining the molar ratio H2SO4 to KCl from 1: 1 to 1: 2, with respect to the reaction describing the formation of KHSO4, and the reaction mixture thus obtained is to contain 45 to 65% mass water. The mixture is heated in the next stage to a temperature of 70 to 90 ° C and the obtained clear solution is concentrated to evaporate the water introduced with the raw materials, and the resulting hydrogen chloride and steam vapors are directed to the absorption system and receives hydrochloric acid, whereby introduced into the absorption node additionally water in an amount that allows obtaining hydrochloric acid food containing at least 28% by mass HCl. The solution obtained after evaporation is cooled to a temperature of 30 ° C - 50 ° C and then the precipitated crystals of the acid potassium sulfate salt are separated, and the mother liquors are completely recycled to the next production cycle to re-prepare the reaction mixture, and the obtained crystals containing mainly acid salts potassium sulphate and the remaining acid mother liquors are the final product intended mainly for composing compound fertilizers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL422437A PL422437A1 (en) | 2017-08-02 | 2017-08-02 | Method for obtaining potassium sulphate acid salt with low content of chlorides and food grade quality hydrochloric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL422437A PL422437A1 (en) | 2017-08-02 | 2017-08-02 | Method for obtaining potassium sulphate acid salt with low content of chlorides and food grade quality hydrochloric acid |
Publications (1)
Publication Number | Publication Date |
---|---|
PL422437A1 true PL422437A1 (en) | 2019-02-11 |
Family
ID=65270361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL422437A PL422437A1 (en) | 2017-08-02 | 2017-08-02 | Method for obtaining potassium sulphate acid salt with low content of chlorides and food grade quality hydrochloric acid |
Country Status (1)
Country | Link |
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PL (1) | PL422437A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041139A (en) * | 1960-06-24 | 1962-06-26 | Du Pont | Method of preparing monopersulfate composition containing the triple salt khso4?k2so4?2khso5 |
US4045543A (en) * | 1975-11-12 | 1977-08-30 | Pennzoil Company | Production of potassium sulfate and hydrogen chloride |
US4588573A (en) * | 1983-09-27 | 1986-05-13 | Prodeco, Inc. | Method for the production of potassium sulfate using sulfuric acid and potassium chloride |
WO2003074424A1 (en) * | 2002-03-07 | 2003-09-12 | Visweswara Rao Abburi | A cyclic process for continuously producing potassium sulphate and potassium sulphate produced thereby |
-
2017
- 2017-08-02 PL PL422437A patent/PL422437A1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041139A (en) * | 1960-06-24 | 1962-06-26 | Du Pont | Method of preparing monopersulfate composition containing the triple salt khso4?k2so4?2khso5 |
US4045543A (en) * | 1975-11-12 | 1977-08-30 | Pennzoil Company | Production of potassium sulfate and hydrogen chloride |
US4588573A (en) * | 1983-09-27 | 1986-05-13 | Prodeco, Inc. | Method for the production of potassium sulfate using sulfuric acid and potassium chloride |
WO2003074424A1 (en) * | 2002-03-07 | 2003-09-12 | Visweswara Rao Abburi | A cyclic process for continuously producing potassium sulphate and potassium sulphate produced thereby |
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