Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Temperature
distributions in the carbonation reactor with an inner diameter of 4.23m and
overall length of 7m is numerically modelled. This is motivated by the need to
lower overall capital and operating costs, and to optimise the carbonation
process performance, simultaneously. In this paper, computational simulations
are used to design an industrial scale carbonation reactor 89.72m3
consisting of an external cooling jacket. Several parameters are varied
including reactor’s geometry (6 shapes), wall thickness (100, 200, and 300mm),
cooling jacket temperature (15, 25, and 35ºC), and material type. These
parameters are varied interchangeably to compare temperature probe plots at a
point probe (1.5,0) located closer to the cooling jacket region. Simulations in
COMSOL® Multiphysics 5.2a show that partial Carbon Steel AISI 4340
jackets with a 100mm distance, between vessel wall and outside wall of jacket,
while operating at ambient temperature range of 20-25ºc, can achieve the
required operating temperature i.e. 50±5ºC. Then, the precipitation process of
the calcium carbonate (PCC) is maximised. This result in decreased bare
materials’ capital costs by 95.87% and 97.39% compared to Nickel and Titanium,
respectively. The need for cooling the water for the jacket is eliminated,
while operating costs are lowered by 25-50% per 10ºC. A simplified experimental
set-up is proposed to demonstrate the coupling of COMSOL®
simulations with experimental work can be a reliable and an effective method to
evaluate the carbonation reactor model design.
Country : Sudan
IRJIET, Volume 4, Issue 9, September 2020 pp. 19-30