Radioisotope tracer study in an indirectly heated rotary dryer

• Autorzy: Pant H.
• Języki publikacji: EN

Abstrakty

EN

A radioisotope tracer study was carried-out in a pilot scale indirectly heated rotary dryer to measure residence time distribution (RTD) of sand particles. Lanthanum-140 labeled sand was used as a tracer. Mean residence time (MRT) and variance of the tracer distribution curves were calculated from the measured RTD curves. From the calculated MRTs, solid holdup in the dryer was estimated. The qualitative comparison of the dimensionless variance with the data published in the literature led to the conclusion that the rotary dryer behaves as a plug flow system. The results of the study were used to design a full-scale industrial rotary dryer.

Słowa kluczowe

EN

holdup; lanthanum-140; mean residence time; radioisotope tracer; residence time distribution; rotary dryer; variance

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2002
• Tom: Vol. 47, nr 4
• Strony: 173--176
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Pant H.

• Isotope Applications Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India, Tel.: [phone], Fax: [phone] 9163,

Bibliografia

• 1. Abouzeid AZM, Fuerstenau DW, Sastry KVS (1980) Transport behawior of particulate solids in rotary drums: Scale-up of residence time distribution using the axial dispersion model. Power Technology 27:241−250
• 2. Charlton JS (ed) (1986) Radioisotope tracer techniques for problem solving in industrial plants. Leonard Hill, Glasgow and London
• 3. Hehl M, Kroger H, Helmrich H, Schugerl K (1977) Longitudinal mixing in horizontal rotary drum reactors. Power Technology 20:29−37
• 4. IAEA (1990) Guidebook on radioisotope tracers in industry. Technical Report Series no. 316. IAEA, Vienna
• 5. IAEA (1996) Residence time distribution software analysis. Computer Manual Series no. 11. IAEA, Vienna
• 6. Karra VK, Fuerstenau DW (1997) Material transport in a continuous rotary drum. Effect of discharge plate geometry. Power Technology 16:23−28
• 7. Wes GWJ, Drinkenburg AA, Stemerduing S (1976) Solid mixing and residence time distribution in horizontal rotary drum reactor. Power Technology 13:177−184