Influence of Oxy-fuel Atmosphere on Microscopic Physical-Chemical Properties of High-alkali Ash at Softening Temperature. (December 2017)

• Record Type: Journal Article
• Authors: Wang, Chang'an; Li, Hanqing; Zhu, Chenzhao; Han, Tao; Liu, Yinhe; Deng, Lei; Che, Defu
• Is Part Of: Energy procedia. Volume 142(2017)
• Page Start: 3240
• Page End: 3243
• Publication Date: 2017-12
• Subjects: high-alkali coal -- oxy-fuel combustion -- CO2 capture -- microscopic properties -- SEM; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2017.12.497
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: The utilization of high-alkali coals in Zhundong coalfield with oxy-fuel combustion technology has a great potential, however, the ash fusion properties of high-alkali coals are still unclear. Here, we studied the influence of oxy-fuel atmosphere on the microscopic properties of high-sodium ash. The change from air to oxy-fuel condition has a negligible influence on ash fusion temperatures, but exhibits certain impact on physical-chemical properties of high-alkali ash. Oxygen content presents a primary effect on the microscopic morphology of ash at softening temperature.