吸收(声学)
硝酸
化学
传质
硫酸
绝热过程
填充床
分析化学(期刊)
相(物质)
氮气
热力学
色谱法
无机化学
材料科学
有机化学
复合材料
物理
作者
N.J. Suchak,Kanhaiya Jethani,Jyeshtharaj B. Joshi
出处
期刊:Aiche Journal
[Wiley]
日期:1991-03-01
卷期号:37 (3): 323-339
被引量:49
标识
DOI:10.1002/aic.690370303
摘要
Abstract Absorption of nitrogen oxides was studied in three packed columns in series. Two were 254 mm ID and 6 m tall, the third was 800 mm ID and 3 m tall. Absorption was also studied in two packed columns of 800 mm ID, 7 and 10 m tall, operated in series. Solutions of mixed nitric and sulfuric acids were used as absorbents. Specific rates of absorption were measured using a stirred cell with a flat interface. A mathematical model is developed for an adiabatic operation. The gas phase reactions and equilibria, gas phase mass transfer, interface equilibria, and liquid phase reactions are included in the model. Heterogeneous gas‐liquid equilibria are included in the model for the first time. The variation in the rates of absorption with chemical reaction (of NO 2 , N 2 O 3 , and N 2 O 4 ) with respect to acid concentration is considered. The formation of nitric acid in the gas phase is also considered in the model. Favorable agreement is shown between the model predictions and the experimental observations.
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