Transformation of Nitrogen Compounds through Hydrotreatment of Saudi Arabia Atmospheric Residue and Supercritical Fluid Extraction Subfractions

详细信息    查看全文

• 作者：Mei Liu ; Linzhou Zhang ; Suoqi Zhao ; Dezhi Zhao
• 刊名：Energy & Fuels
• 出版年：2016
• 出版时间：January 21, 2016
• 年：2016
• 卷：30
• 期：1
• 页码：740-747
• 全文大小：588K
• ISSN：1520-5029

文摘

Atmospheric residue (AR) from Saudi Arabia (SZAR) was subjected to supercritical fluid extraction fractionation (SFEF) and four extractable subfractions (SFEF-1–4) and an unextractable end-cut were obtained. SZAR and SFEF-1–4 were subjected to hydrotreatment (HDT) in a continuous mini fixed-bed reactor. Three commercial catalysts were used to remove the impurity in the feedstock. The composition and structural transformation of nitrogen (N)-containing compounds were investigated. Electrospray ionization (ESI) Fourier transform–ion cyclotron resonance mass spectrometry (FT-ICR MS) was used for molecular characterization of N-containing compounds of SZAR, extractable SFEF subfractions, and HDT products. Results showed that N₁ class species with high aromaticity and/or low carbon number exhibited higher catalytic hydrogenation reactivity. N₁ class species with lower aromaticity were removed regardless of chain length.