Abstract
There are three different fly ashes mixed with bentonite respectively as raw material to preparation of denitration catalyst. Then the catalyst combined with the low temperature plasma for denitration. The different mixing ratio, drying temperature and drying time of catalyst preparation were studied. The denitration mechanism of fly ash catalyst modified with different gases (O2, N2, Ar, and hydrocarbon gas) by low-temperature plasma technology was studied. The compositions of fly ash were detected by element analysis, ICP analysis, Boehm analysis, and Infrared spectral analysis which affected the denitration performance of fly ash catalyst. And we discussed the effect of denitration performance with different types of fly ash and plasma power. The results shown that: fly ash mixed with bentonite for 2:1, drying temperature is 100°C and drying time is 30 min are the optimal preparation conditions; The denitration performance is best of the catalyst which produced by circulating fluidized bed when the plasma power is 30 W. And Oxygen can be used as the modification gas for preparing the fly-ash catalyst. There are more basic functional groups on the surface of fly ash catalyst modified with oxygen atmosphere and the N=O plays a main role.
Highlights
The catalyst is the most core part of the flue gas in denitration process
There are more basic functional groups on the surface of fly ash catalyst modified with oxygen atmosphere and the N=O plays a main role
The fly ash catalyst is modified with different gases (O2, N2, Ar, and hydrocarbon gas) to increase the denitration rate
Summary
The catalyst is the most core part of the flue gas in denitration process. And in the recent years, this is the experts and scholars’ devote.[1,2] In addition, the denitration catalyst with high price 40000 Yuan in per cubic meter on market is still the primary catalysts for denitration. Special powder that hollow particles and the solid particle, porous particle and rules of particles, organic matter and inorganic matter mixed each other with good reactivity, adsorption and catalytic properties.[5] And the fly ash as a carrier in catalyst to treatment NOX can reduce the effect in the environment that fly ash excessive accumulation, and can improve the global problems of atmospheric pollution problem and achieve the purpose of using waste treat waste.[6,7]. The improvement of surface energy helps to introduce reactive groups in the subsequent reaction. It can improve the phenomenon of active component uneven distribution on the surface of catalyst in the process of preparation catalyst in the roasting stage. The application of low-temperature plasma technology on the surface modification of fly ash catalyst will have good prospects for the preparation of catalyst.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
