Dry single-stage method of sodium tripolyphosphate production – technological and economic assessment

• Autorzy: Gorazda K. , Kowalski Z. , Kijkowska R. , Pawłowska-Kozińska D. , Wzorek Z. , Banach M. , Nowak A. K.

Identyfikatory

DOI

10.2478/pjct-2014-0007

• Języki publikacji: EN

Abstrakty

EN

The study presents a technology of sodium tripolyphosphate (STPP) production with the use of a dry, single-stage method. The reacting substrates (concentrated wet-process phosphoric acid - WPPA and solid Na2CO3 ) are mixed with a recycled final product (STPP) in a mixer, then a „quasi-dry” mixture is calcined in a rotary kiln. Thanks to that, some stages of a classic method of STPP production are eliminated: one of the two-stage neutralization of the phosphoric acid with sodium carbonate at temperature ~80°C, filtration of the neutralised solution and its evaporation, as well as the stage of drying a solution of mono- and di-sodium orthophosphate in a spray dryer. According to the presented technical and economical analysis, the costs of STPP production using a single-stage dry method can be 10% lower compared to the classic method.

Słowa kluczowe

EN

sodium tripolyphosphate production; dry method; classic method; technical and economic analysis

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2014
• Tom: Vol. 16, nr 1
• Strony: 41--44
• Opis fizyczny: Bibliogr. 10 poz., tab., wykr.

Twórcy

autor

Gorazda K.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Kowalski Z.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Kijkowska R.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Pawłowska-Kozińska D.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Wzorek Z.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Banach M.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

autor

Nowak A. K.

• Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland

Bibliografia

• 1. Wzorek, Z. (2002). Operational properties of sodium tripoliphosphate. Technical Transactions, Chemistry 3, 67-73 (in Polish).
• 2. Kijkowska, R., Kowalski, Z., Pawłowska-Kozińska, D., Wzorek, Z. & Gorazda, K. (2008). Tripolyphosphate made from Wet-process Phosphoric Acid with the use of a rotary kiln. Ind. Eng. Chem. Res. 47, 6821-6827. DOI: 10.1021/ie800412q.
• 3. Broze, G. (1999). Handbook of Detergents, Part A: Properties, CRC Press.
• 4. CEEP. (2007). Function of phosphates in detergents. Retrieved July 14, 2008, from http://www.ceep-phosphates.org.
• 5. Kowalski, Z., Kijkowska, R., Pawłowska-Kozińska, D. & Wzorek, Z. (2002). Sodium tripolyphosphate and others condensed sodium phosphates production methods. Pol. J. Chem. Tech. 4(3), 27-33.
• 6. King, C.S. (1947). US Patent No. 2419147. Washington, D.C.: U.S. Patent and Trademark Office.
• 7. Zobel, D., Kuchler, K., Oppermann, H. & Soyka, H. (1977). Patent no. DE2121885. German Patent and Trademark Office.
• 8. Kowalski, Z., Kijkowska R., Pawłowska-Kozińska, D., Wzorek, Z., Gorazda, K. & Banach, M. (2008). Report from realization of research project for State Committee for Scientific Research, The new technological solutions of sodium tripoliphosphate and sodium pyrophosphate production processes. Unpublished, Kraków, Poland (in Polish).
• 9. Van Wazer, J.R. (1958). Phosphorus and Its Compounds. New York, USA: Interscience Publishers.
• 10. Pikoń, K. (1970). Aparatura Chemiczna. Warszawa, WNT.