Development of a Kinetic Model for the NOx Reduction Process by Potassium-Containing Coal Pellets
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- 作者：Agustí ; n Bueno-Ló ; pez ; Avelina Garcí ; a-Garcí ; a ; and José ; Antonio Caballero-Suá ; rez
- 刊名：Environmental Science & Technology
- 出版年：2002
- 出版时间：December 15, 2002
- 年：2002
- 卷：36
- 期：24
- 页码：5447 - 5454
- 全文大小：180K
- 年卷期：v.36,no.24(December 15, 2002)
- ISSN：1520-5851
文摘
A four step kinetic model was developed to describe theNOx reduction process by potassium containing coal-pellets.The relevance and significance of the different stepsconsidered in the model as well as the considerationsassumed to introduce the equations associated to this modelwere properly discussed. The simulation both of the NOxreduction and carbon conversion evolution showsgood agreement with the experimental data obtainedthroughout lifetime tests at 350 
C for samples with differentpotassium contents. The set of parameters predicted bythe kinetic model have physical significance and are helpfulin explaining the different behavior exhibited by thesamples. Some of these parameters can be correlatedwith different features of the samples. The potassium loadinginfluences mainly on the kinetic rate constant governingthe NOx chemisorption step, thus explaining the increase inselectivity with the catalyst content exhibited by thistype of samples.
C for samples with differentpotassium contents. The set of parameters predicted bythe kinetic model have physical significance and are helpfulin explaining the different behavior exhibited by thesamples. Some of these parameters can be correlatedwith different features of the samples. The potassium loadinginfluences mainly on the kinetic rate constant governingthe NOx chemisorption step, thus explaining the increase inselectivity with the catalyst content exhibited by thistype of samples.