Increasing the bulk density of STPP - influence of the process parameters

• Autorzy: Gorazda K. , Banach M. , Makara A. , Wzorek Z.
• Języki publikacji: EN

Abstrakty

EN

The new requirements that were placed on STPP, like high bulk density, the proper relation of Form I and Form II and suitable physicochemical properties, resulted in the development of the present production methods. The paper presents the research results on increasing the bulk density of STPP by a chemical method. In the introduced method the solid sodium phosphate from spray drying and sodium orthophosphate solution, after acid neutralization, were rubbed together. Such an operation changes the physicochemical properties of the dried sodium phosphate before calcining, which results in increasing the bulk density of STPP to a level of 0.80 kg/dm3. The dependence of STPP bulk density on process parameters such as: sodium orthophosphate solution to solid sodium phosphate mass ratio, temperature of dosed sodium orthophosphate solution, as well as the calcining temperature of mixtures were analysed.

Słowa kluczowe

EN

sodium tripolyphosphate; STPP; high bulk density

PL

tripolifosforan sodu; STPP; gęstość nasypowa

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2011
• Tom: Vol. 13, nr 2
• Strony: 40--45
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Gorazda K.

autor

Banach M.

autor

Makara A.

autor

Wzorek Z.

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

Bibliografia

• 1. Broze, G., (1999). Handbook of Detergents, Part A: Properties, CRC Press.
• 2. CEEP (2007, July). Function of phosphates in detergents. Retrieved July 14, 2008, from http://www.ceepphosphates.org.
• 3. 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.
• 4. CEEP (2008, July). Press releases concerning phosphates and detergents was performance. Retrieved July 14, 2008, from http://www.ceep-phosphates.org.
• 5. 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
• 6. Dyer, J.N., Post, L.B. & Rosen, H.J. (1972). US Patent No. 3,650,685. Washington, D.C.: U.S. Patent and Trademark Office.
• 7. Hensler, P.L., Church, D.F. & Beger, R.W. (1981). US Patent No. 4,255,274. Washington, D.C.: U.S. Patent and Trademark Office.
• 8. Pals, R. (1979). US Patent No. 4,134,963. Washington, D.C.: U.S. Patent and Trademark Office.
• 9. Zorska, E., Cholewa, J., Gadomski, Z. & Olech, M. (2007). Polish Patent No. 196166B1. Polish Patent Office, (in Polish).
• 10. Banach, M., Kowalski, Z,. Wzorek, Z. & Gorazda, K. (2009). A chemical method of the production of "heavy" sodium tripolyphosphate with the high content of Form I or Form II. Pol. J. Chem. Tech. 11(2), 13/20. DOI: 10.2478/v10026-009-0018-x.
• 11. Banach, M., Wzorek, Z. & Gorazda, K. (2009). Production of medium bulk density sodium tripolyphosphate by chemical method. Przem. Chem. 88(4), 370–374, (in Polish).
• 12. Banach, M., Kowalski, Z., Wzorek, Z. & Gorazda, K. (2009). High bulk density sodium tripolyphosphate produced by chemical method. Przem. Chem. 88(11), 1236–1239, (in Polish).
• 13. Polish Committee of Standardization. (1993). Polish Standard: Methods of phosphoric salt examination: Determination of water content, gravimetric method. PN-93/C-84300/22, (in Polish).
• 14. Polish Committee of Standardization. (1993). Polish Standard: Methods of phosphoric salt examination: Size analysis with the use of mechanical method. PN-93/C-84300/27, (in Polish).
• 15. Polish Committee of Standardization. (1980). Polish Standard: Bulk density determination. PN-80/C-04532, (in Polish).
• 16. Procter& Gamble. Manufacturing Standards-European Operations (1998). Raw material specification. Granular sodium Tripoliphosphate, high bulk density. 10072234.