Removal of nitric oxide from flue gas using mixed oxide sorbents

Gorst J., Do D.D. and Desai N.J. (1989) Removal of nitric oxide from flue gas using mixed oxide sorbents. Fuel Processing Technology, 22 1: 5-24. doi:10.1016/0378-3820(89)90058-1

Author Gorst J.
Do D.D.
Desai N.J.
Title Removal of nitric oxide from flue gas using mixed oxide sorbents
Journal name Fuel Processing Technology   Check publisher's open access policy
ISSN 0378-3820
Publication date 1989-01-01
Sub-type Article (original research)
DOI 10.1016/0378-3820(89)90058-1
Volume 22
Issue 1
Start page 5
End page 24
Total pages 20
Subject 1605 Policy and Administration
2102 Curatorial and Related Studies
2103 Historical Studies
2700 Medicine
2200 Engineering
Abstract A scheme for denitrification of the flue gas using regenerable mixed oxide sorbents is proposed in this study. The sorption of nitric oxide with several pure and mixed oxides (Na2O, Co2O4, Fe2O3) is studied by thermogravimetric analysis. Various sorbent preparation techniques are evaluated with an objective of increasing the capacity and rate of sorption. A freeze drying technique for preparing highly porous and homogeneous sorbents showed an increased capacity (for NOx) of 12 g NO/100 g sorbent, double that of the classical precipitation method (6 g NO/100 g sorbent) (AVCO, 1969 [1]). A further increase in capacity (26 g NO/100 g sorbent) was achieved by sorbents prepared by pyrolysis of an organic precursor (citric acid) mixed with the sorbent. The results showed that the Na2O was the only reacting species. The Co3O4 and Fe2O3, it was proposed, acted as catalysts, promoting an reaction. Sorbents proved regenerable at 700°C and sorption performance increased up to 400°C. The effect of increasing NO concentration was a linear increase in the initial rate. Sorbent performance was successfully modelled using a pellet grain model. The model takes into account diffusion and structural changes.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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