Effect of feedstock variability on catalytic cracking yields

FCC coprocessing oil sands heavy gas oil and canola oil. 1. Yield structure

“…Assuming canola oil in the blend is crackable after decomposition of triglycerides into fatty acids, which are linear and able to penetrate the pores of zeolites [6], the gasoline precursors [14,15] defined as the summation of saturates and monoaromatics, plus other crackable components, can be calculated for the blend. Table 2 shows that the resulting value (71.3 wt%) is higher than that for HGO (66.3 wt%) indicating that the blend may give a higher conversion than HGO.…”

Dependence of Fluid Catalytic Cracking Unit Performance on H‐Oil Severity, Catalyst Activity, and Coke Selectivity

“…However, the H‐Oil VGO quality is a function of H‐Oil reaction temperature (WABT) and the content of FCC slurry in the H‐Oil feed. Fisher established that the quality of the FCC feedstock is best defined by the content of gasoline precursors (saturates + mononuclear aromatics), determined by mass‐spectrometric analysis of the FCC feedstock. In this study, mass spectrometry analytical equipment was not available, but a laboratory ACE FCC unit was.…”

Empirical Models to Characterize the Structural and Physiochemical Properties of Vacuum Gas Oils with Different Saturate Contents

“…A total of 74 vacuum gas oils characterized by HPLC-MS, NMR, SARA analysis and density, refractive index, aromatic carbon content, hydrogen content, molecular weight as reported in [2][3][4]15,[33][34][35][36][37][38][39][40] were used in this study (Table S1 from Supplementary material). The empirical models evaluated in this research are summarized below: The n-d-M method was originally developed by Van Nes and van Westen [41] and relates the structural group composition determined by the use of NMR in terms of the contents of paraffinic, naphthenic and aromatic carbon to three oil physical properties: refractive index, density and molecular weight.…”

“…The performance of these processes has been shown in many studies to strongly depend on the quality of the feedstock [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The vacuum gas oil fraction from petroleum is the typical feed for the FCC [2,3,[5][6][7][8][9][10][11][12][13][14][15][16][17] and it has been explored as a feedstock for steam cracking as well [4]. Considering that in Resources 2021, 10, 71 2 of 20 both FCC and thermal cracking the reactivity of the vacuum gas oils increases with the saturate content enhancement and aromatic carbon content reduction, the information about these vacuum gas oil characteristics is of paramount importance for optimizing their performance [17].…”

“…The yield of the least valuable product from the VGO conversion processes-the unconverted VGO (bottoms) product-is defined by the content of heavy aromatics because it is difficult to crack [7,29]. Considering that the conversion level and the yields of valuable products from the VGO conversion processes depend on the contents of the saturates, aromatic carbon and heavy aromatics we investigated the properties of 74 VGOs published in the open literature [2][3][4]15,[30][31][32][33][34][35][36][37][38][39][40]. The studied VGOs had been characterized by HPLC-MS (high-performance liquid chromatography-mass spectrometry), NMR (nuclear magnetic resonance), SARA (saturates, aromatics, resins, asphaltenes) analysis and the typical physicochemical properties like density, distillation, refractive index, etc.…”