Abstract
Transpiring wall reactor can effectively minimize reactor corrosion and salt deposition problems, which seriously hinder the commercialization of supercritical water oxidation. In this work, methanol was selected as organic matter, and the influences of key operating parameters on water film properties and organic matter removal were investigated mainly via numerical simulation. The results show that methanol conversion could be higher than 99% and hardly affected by various feed and transpiration water parameters. The highest value of reactor center temperature significantly increased by about 300 K as feed preheating temperature changed from 673 K to 823 K. Decreasing feed flow rate, feed concentration, feed preheating temperature and transpiration water temperature, and increasing transpiration intensity reduced water film temperature but raised coverage rate, which are beneficial to forming excellent water film with good corrosion and salt deposition resistance. These findings can provide significant reference for the optimization of reactor operating parameters.
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