FT-ICR MS Analysis of Nitrogen-Containing Compounds in the Products of Liaohe Atmospheric Residue Hydrocracking

Dong Liu,^†,* Yue Fu,^‡ Wenan Deng,^† Quan Shi,^§,* Kuijv Ma,^∥ Ting Hou,^† and Chongchong Wu^⊥ 

^†State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266555, China

^‡China National Offshore Oil Corporation, Beijing, 100010, China

^§State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

^∥China National Offshore Oil Exploiting Technology Corporation, Tianjin, 300456

^⊥Research Institute of Petroleum Processing, SINOPEC CORP, China, 100020

*Corresponding Authors: Dong Liu − Email:  ldongupc@vip.sina.com; Quan Shi − Email: sq@cup.edu.cn

DOI: 10.1021/ef201482p

Keywords: Catalytic reactions; Chemical reactions; Lipids; Nitrogen compounds; Saturation

Abstract:In this paper, the distribution of nitrogen (N)-containing compounds of slurry-bed hydrocracking products are investigated. Raw materials of the products were Liaohe atmospheric residue (LHAR), while the hydrocracking reaction was maintained at 430 °C with initial pressure of 8.0 MP for 1 h. The distillation fractions, including 180–350 °C (diesel fuel), 350–400 °C (VGO), 400–450 °C (VGO), and >450 °C (cracked residue), were analyzed by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS). It turned out that the main type of N-containing compounds in the products was N1 compounds. The main N-containing compounds in diesel oil were N₁ compounds with C₁₇–C₂₃, while in VGO the main N-containing compounds were N₁ compounds with C₂₀–C₂₆ and, at the same time, N₂ and N₂S₁ compounds also appeared. In addition, the main compounds in cracked residue were N₁ compounds with C₂₄–C₂₈, but the relative abundance of N₂ compounds, which mainly centralized in cracked residue, increased. Other types of nitrogen compounds were few in products.