Ash fusion characteristics during co-gasification of biomass and petroleum coke. (June 2018)

• Record Type: Journal Article
• Authors: Xiong, Qing-an; Li, Jiazhou; Guo, Shuai; Li, Guang; Zhao, Jiantao; Fang, Yitian
• Is Part Of: Bioresource technology. Volume 257(2018)
• Page Start: 1
• Page End: 6
• Publication Date: 2018-06
• Subjects: Biomass ash -- Petroleum coke ash -- Ash fusion temperatures -- Ash mineral compositions; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.02.037
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Petcoke shows high AFTs owing to the formations of high melting point minerals. Biomass blending can effectively decrease the AFTs of YQ. Biomass ash can adjust the AFTs due to the AAEMs present in ash. Abstract: In this study, the effect of biomass ash on petroleum coke ash fusibility was investigated at a reducing atmosphere. Some analytical methods, such as ash fusion temperatures (AFTs) analysis, X-ray diffraction (XRD), FactSage and scanning electron microscopy (SEM), were applied to determine the characteristics of ash fusion and transformation of mineral matters. The results indicated that AFTs were closely associated with ash mineral compositions. It was found that the formations of high melting point calcium silicate, vanadium trioxide and coulsonite resulted in the high AFTs of Yanqing petroleum coke (YQ). When blending with certain proportional pine sawdust (PS), corn stalk (CS), the AFTs of mixture could be decreased significantly. For PS addition, the formations of low-melting point calcium vanadium oxide should be responsible for the reduction of AFTs, whereas for CS addition the reason was ascribed to the formation of low-melting point leucite and the disappearance of high-melting V2 O3 .