Radioisotope tracer study in a sludge hygienization research irradiator (SHRI)

Simulation and optimization of sludge hygienization research irradiator

“…The simulation captured small flow separation pockets below the source rod assembly and a larger recirculation zone just above the reducer and below the source rod assembly. CFD simulation was validated with the experimental residence time distribution (RTD) data [15,14] based on NH 4 82 Br radiotracer. After the CFD simulation, the vertical cross-section at the middle half of the irradiator as shown in Fig.…”

Measurements of liquid phase residence time distributions in a pilot-scale continuous leaching reactor using radiotracer technique

“…Residence time distribution (RTD) analysis is very useful to access the design of the continuously operating chemical process equipment and optimize their operating parameters (Levenspiel, 1972). Radiotracer techniques are commonly used for measurement of RTD of flowing process material in pilot as well as full-scale industrial systems and determine flow parameters such as mean residence time (MRT), bypassing, extent of dead volume present and degree of mixing (Charlton, 1986;IAEA, 1990;Thyn et al, 2000;Pant et al, 2001aPant et al, , 2001bPant et al, , 2009aPant et al, , 2009bPant et al, , 2012Pant and Yelgoankar, 2002;Samantray et al, 2014). The results of RTD analysis obtained in pilot-scale systems are utilized to scale up the process.…”

Residence time distribution measurements in a pilot-scale poison tank using radiotracer technique

“…In addition to this, RTD is also used to improve the design of the existing industrial systems; to optimize design of new systems at the design stage itself. Radiotracer techniques are widely used for measurement of RTD in full-scale as well as pilotscale industrial systems because of their specific advantages over conventional tracers (Charlton, 1986;IAEA, 1990IAEA, , 2004Thyn et al, 2000;Blet, 2000;Pant et al, 2000Pant et al, , 2001Pant et al, , 2009aPant et al, , 2009b, 2015, Pant and Yelgoankar, 2002Borroto, 2003 Dagadu et al, 2012). This paper discusses measurements of RTD of liquid phase in a pilot-scale boron poison tank using the radiotracer technique.…”