01851nas a2200157   4500008004100000022001400041245008800055210006900143260000900212300001600221490000700237520129300244100002501537700002301562856010801585       2023                        eng d  a0888-588500aEffect of microwave heating on the residence time distribution in a tubular reactor0 aEffect of microwave heating on the residence time distribution i  cAUG   a19381-193890 v623 a<p>
	Microwave(MW) heating has been revolutionary in various applications,including chemical synthesis. A nonconventional heating approach reducesthe reaction time significantly. For a continuous flow tubular reactorunder microwaves, the temperature would change from the inlet to theoutlet depending on the dielectric constant of the reaction mass,which would further change the physical properties, viz., the densityand viscosity of the material. Such changes in the physical propertieswould lead to nonideal flows and would affect the conversion as wellas selectivity for reactions. In order to understand the extent ofsuch a nonideality, here for the first time we have done systematicstudies of the residence time distribution in a helical coil reactor.The axial dispersion model has been modified to take into accountthe temperature-dependent physical properties of the fluid. The empiricalcorrelation for the dispersion number is obtained over the range of450 &amp; LE; P (W) &amp; LE; 1200 and 60 &amp; LE; T (&amp; DEG;C) &amp; LE; 150. This study will help model thereaction kinetics as well as reactor design under microwave specificallyfor heat sensitive reactions where variations in the overall residencetime would affect the yield and selectivity of the end product.</p>
1 aSonawane, Jayesh, R.1 aKulkarni, Amol, A.  uhttps://library.ncl.res.in/content/effect-microwave-heating-residence-time-distribution-tubular-reactor