The absorption of dilute nitrogen oxides into aqueous media using a structured packing

Author

Gary W. Selby

Date of Award

6-1986

Degree Type

Thesis

Degree Name

Master of Science

Major

Chemical Engineering

Major Professor

Robert M. Counce

Committee Members

Joe Perona, George Frazier

Abstract

Pilot-plant experiments on the aqueous scrubbing of dilute NO_x gas mixtures at atmospheric pressure have been conducted using an absorber filled with high efficiency packing. NO_x removal efficiencies of 10 to 70% were obtained for gas mixtures of 125 to 2500 ppm N _x; the NO_x species were predominantly NO₂* (NO₂ and N₂O₄). The 0.102-m-id absorber was packed with Koch Sulzer packing (Type BX) to a depth of 0.8 m.

The experimental results are in good agreement with a model based on the absorption/hydrolysis of N₂O₄ and NO₂. A liquid phase mass transfer coefficient of - 4 4.982 X 10^-4 m/s was calculated by data analysis. The value of this coefficient is reasonable compared to mass transfer coefficients of other packings. The gas-liquid interfacial area of the packing was determined to be 690. M^-1. This interfacial area was found to be inde pendent of the liquid rate which is in agreement with other studies.

Recommended Citation

Selby, Gary W., "The absorption of dilute nitrogen oxides into aqueous media using a structured packing. " Master's Thesis, University of Tennessee, 1986.
https://trace.tennessee.edu/utk_gradthes/13804