Reduction and Desulfurization of Petroleum Coke in Ammonia and Their Thermodynamics

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• 作者：Jin Xiao ; Yanbing Zhang ; Qifan Zhong ; Fachuang Li ; Jindi Huang ; Bingjie Wang
• 刊名：Energy & Fuels
• 出版年：2016
• 出版时间：April 21, 2016
• 年：2016
• 卷：30
• 期：4
• 页码：3385-3391
• 全文大小：424K
• 年卷期：0
• ISSN：1520-5029

文摘

NH₃-reducing desulfurization was demonstrated using a high-sulfur coke calcining desulfurization experiment at 1000 °C, and the sulfur chemical reactions of the three aromaticities of thiophene were studied during desulfurization. Results showed that NH₃-reducing desulfurization could significantly remove sulfur in the coke, and the best operation temperature was approximately 800 °C, at which more than 80% of organic sulfur could be removed. The physical and chemical indicators of petroleum coke after desulfurization were not affected. Thermodynamic calculation results showed that the desulfurization reaction was more favorable at higher temperatures. However, the reaction was also affected by other factors; thus, the desulfurization efficiency decreased when the desulfurization temperature exceeded 800 °C. This paper presents a specific explanation of this phenomenon.