Energy efficient multistage zeolite drying for heat sensitive products
2008
Djaeni, M.
Although drying takes a significant part of the total energy usage in industry, currently available drying technology is often not efficient in terms of energy consumption. Generally, the energy efficiency for drying processes ranges between 20-60% depending on the dryer type and product to be dried. This research focuses on the development of single and multistage zeolite drying combined with heat recovery unit to enhance the energy efficiency. The evaluation using steady state and two dimensional model showed that for single stage system the energy efficiency can reach 70-75% and it increases corresponding to the stage number. For 2-3 stages, the energy efficiency 80-90% can be achieved. The experimental work using single stage zeolite dryer also showed that the energy efficiency is close to conceptual approach. Based on the impressive results, a number of potential options have been formulated to construct the zeolite dryer in continuous operating systems for industrial application.
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