A study on the Soluble-Wall Dissolution in Gas-Liquid Two-Phase flow.

• Main Authors: Ming-Zen Chang, 張明仁
• Other Authors: Tung-Wen Cheng
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/90870316776033463579

碩士 === 淡江大學 === 化學工程學系 === 89 === This work investigated the influence of inclination angle on the dissolution rate of soluble-wall under liquid-phase or gas-liquid two-phase flow. The experiments were carried out in the range of 0.02~1.80 m/s gas superficial velocity and 0.50~1.62 m/s liquid superficial velocity. The inclination angle included 00,450,and 900(vertical).The soluble-wall is made of urea and deionized water is used as the solvent. Experimental result show that the mass transfer coefficient of the two-phase system is significantly larger than that of liquid —phase system. In two-phase system, the mass transfer coefficient increase with the increase of gas velocity, especially for operating at 450 or 900. At low gas velocity, the mass transfer coefficient of 450 system is the highest. At high gas velocity, the 900 system has a larger mass transfer coefficient.