Abstract
Six natural mineral sorbents and a series of self-made sorbents were used to remove alkali-metal vapor from high-temperature coal gas. Results indicate that the self-made sorbent GM6 is the best sorbent with the highest sodium compound content, under the conditions of 1173 K, a gas velocity of 16 L/min, a reaction time of 3 h, and a NaCl concentration of 0.13 mg/L. It is shown that the sodium compound content is dependent on the chemical constituents and the microporous structure of sorbent, based on the surface area data. Results of X-ray diffraction (XRD) analysis and the kinetics indicate that the adsorption process of GM6 is physical adsorption in an N2 atmosphere and it is controlled by the diffusion of a sodium resultant layer. The adsorption process in a N2/H2O(2%) atmosphere is mainly a chemical adsorption that is controlled by both the chemical control and the product-layer diffusion control.
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.
