ABSORPTION OF NO BY NaClO2 SOLUTION: PERFORMANCE CHARACTERISTICS
- 1 January 1998
- journal article
- research article
- Published by Taylor & Francis in Chemical Engineering Communications
- Vol. 170 (1), 67-81
- https://doi.org/10.1080/00986449808912736
Abstract
The absorption of lean NO (200 ∼ 1000 ppm) gases in aqueous NaClO2 solution was investigated in both a mechanically stirred vessel and a packed tower. The chemical reaction rate between NO and NaClO2 in alkaline solution was shown to be second-order with respect to NO concentration and first-order to NaClO2 concentration. After including mass transfer considerations, the absorption rate equation established in this work (under the condition of NaClO2 concentration less than 1.0 M and temperature at 30°C) is given as: $ In addition, a robust design method was also used to study the performance of this de NO x process by NaClO2 solution in a packed tower. S/N analysis of the results indicated that the pH of liquor, NaClO2 concentration and NaOH concentration were the major factors in affecting both NO oxidation and absorption efficiencies.Keywords
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