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2014 | 16 | 1 | 41-44
Article title

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

Content
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EN
Abstracts
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.
Publisher

Year
Volume
16
Issue
1
Pages
41-44
Physical description
Dates
published
1 - 03 - 2014
online
25 - 03 - 2014
Contributors
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland, gorazda@chemia.pk.edu.pl
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland
author
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland
author
  • Cracow University of Technology, Institute of Inorganic Chemistry and Technology, Warszawska 24, 31-155 Kraków, Poland
References
  • 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.[Crossref][WoS]
  • 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 Offi ce.
  • 7. Zobel, D., Kuchler, K., Oppermann, H. & Soyka, H. (1977). Patent no. DE2121885. German Patent and Trademark Offi ce.
  • 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 Scientifi c 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.
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_pjct-2014-0007
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