Role of Catalyst in Optimizing Fluid Catalytic Cracking Performance During Cracking of H-Oil-Derived Gas Oils

Stratiev, Dicho; Shishkova, Ivelina; Ivanov, Mihail; Dinkov, Rosen; Georgiev, B.; Argirov, Georgi; Atanassova, Vassia; Vassilev, Peter; Atanassov, Krassimir; Yordanov, Dobromir; Popov, A. A.; Padovani, Alessia; Hartmann, Ulrike; Brandt, Stefan; Nenov, Svetoslav; Sotirov, Sotir; Sotirova, Evdokia

doi:10.1021/acsomega.0c06207

Cited by 19 publications

(9 citation statements)

References 46 publications

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“…These data indicate that the properties of mixed feed and of the liquid products vary in a rather wide range. Properties of the liquid products from H-Oil ® are important because they control the reactivity of these streams during their further refining in processes like FCC and hydrotreatment [3,4,12,13] to produce finished marketable products. It was found in our earlier studies that the lower the Kw of H-Oil ® gas oils the lower their crackability in FCC is [3].…”

Section: Resultsmentioning

confidence: 99%

“…The vacuum gas oil (VGO) is catalytically cracked. It was found that the properties of the H-Oil ® VGO varied in a wide range, depending on H-Oil ® feed structure and operation severity which affected the H-Oil ® VGO reactivity during its processing in the fluid catalytic cracking (FCC) [3,4]. The H-Oil ® feed structure consisted of straight run vacuum residue, FCC slurry oil (SLO) and recycle of partially blended fuel oil (PBFO).…”

Section: Introductionmentioning

confidence: 99%

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Crude Slate, FCC Slurry Oil, Recycle, and Operating Conditions Effects on H-Oil® Product Quality

et al. 2021

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This paper evaluates the influence of crude oil (vacuum residue) properties, the processing of fluid catalytic cracking slurry oil, and recycle of hydrocracked vacuum residue diluted with fluid catalytic cracking heavy cycle oil, and the operating conditions of the H-Oil vacuum residue hydrocracking on the quality of the H-Oil liquid products. 36 cases of operation of a commercial H-Oil® ebullated bed hydrocracker were studied at different feed composition, and different operating conditions. Intercriteria analysis was employed to define the statistically meaningful relations between 135 parameters including operating conditions, feed and products characteristics. Correlations and regression equations which related the H-Oil® mixed feed quality and the operating conditions (reaction temperature, and reaction time (throughput)) to the liquid H-Oil® products quality were developed. The developed equations can be used to find the optimal performance of the whole refinery considering that the H-Oil liquid products are part of the feed for the units: fluid catalytic cracking, hydrotreating, road pavement bitumen, and blending.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crude Slate, FCC Slurry Oil, Recycle, and Operating Conditions Effects on H-Oil® Product Quality

et al. 2021

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“…As shown in Table 1, the Brønsted acid sites remain constant after metal impregnation. It is true since the presence of the Brønsted acid site is a function of zeolite content, and its density is determined by the ratio of the silicon/alumina content [30]. As there is no treatment of ZSM-5 prior to the metal impregnation, it is suggested that the silicon to alumina ratio in the ZSM-5 framework remains unchanged.…”

Section: Catalysts Characterizationsmentioning

confidence: 99%

Improved Brønsted to Lewis (B/L) Ratio of Co- and Mo-Impregnated ZSM-5 Catalysts for Palm Oil Conversion to Hydrocarbon-Rich Biofuels

et al. 2021

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The purposes of this study are to investigate the effect of metal (Co and Mo) impregnation to ZSM-5 catalysts on the Brønsted to Lewis (B/L) ratio as the active sites of cracking reaction, and the catalysts’ performance testing for palm oil cracking to produce hydrocarbon-rich biofuels. Both metals were impregnated on the ZSM-5 catalyst using a wet-impregnation method. The catalysts were characterized using X-ray diffraction (XRD), X-ray Fluorescence (XRF), Scanning Electron Microscopy (SEM), Brunauer–Emmett–Teller (BET), and Pyridine-probed Fourier-Transform Infrared (Py-FTIR) spectroscopy methods. The catalysts were tested on the cracking process of palm oil to biofuels in a continuous fixed-bed catalytic reactor. In order to determine the composition of the organic liquid product (OLP, biofuels), the product was analyzed using a gas chromatography-mass spectrometry (GC-MS) method. The results showed that the co-impregnation of Co and Mo to ZSM-5 highly increased the Brønsted to Lewis acid site (B/L) ratio, although the total number of acid sites decreased. However, the impregnation of Co and Mo on the ZSM-5 decreased the surface area of catalysts due to pore blocking by metals, while the B/L ratio of the catalysts increased. It was obtained that by utilizing Co- and Mo-impregnated ZSM-5 catalysts, the hydrocarbons product selectivity increased from 84.32% to 95.26%; however, the yield of biofuels decreased from 67.57% to 41.35%. The increase in hydrocarbons product selectivity was caused by the improvement of the Brønsted to Lewis (B/L) acid sites ratio.

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“…Heavy residual fractions comprise approximately 30–50% by weight of the total volume of processed crude oil. The increasing global extraction of heavy crude oils requires the development of methods for determining and characterizing the qualitative properties of the extracted oils. , High-viscosity residual fractions in refineries are currently most often obtained from secondary oil processing processes, such as thermal or catalytic cracking of heavy oil residues. − The residual fractions obtained in this manner are complex mixtures of different vacuum and atmospheric residual fractions. These residual fractions have one or more of the following attributes: a high heteroatom content, high viscosity, a high proportion of microcarbon residues, and a high metal content.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of High-Viscosity Residual Fractions by Hot Filtration

Schlehöfer,

Vráblík,

Chrudimská

et al. 2023

Energy Fuels

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The high-viscosity residual fractions obtained during the secondary processing of crude oil are widely used as components in the production of marine fuels. Because of the high viscosity of these residual fractions, they cannot be used as marine fuel in accordance with the ISO 8217 standard (which monitors the quality parameters of residual marine fuels) without being mixed with a suitable low-viscosity cutter stock. Hot filtration, in accordance with the standardized procedures ISO 10307-1 and ISO 10307-2, is used to monitor the stability of the final marine fuels. However, this procedure cannot be applied to pure residual fractions because of their viscosity. We propose a procedure that does allow the application of hot filtration to determine the stability (in accordance with ISO 10307-1 and -2) of high-viscosity residual fractions. The proposed procedure involves mixing the residual fractions with a mixture of methyl esters in a suitable ratio. In this case, a 30% by weight addition of methyl esters to the tested high-viscosity residual fractions was determined to be the most suitable. The SV coefficient was employed to determine the optimal amount of the mixture of methyl ester (C ̌SN EN 14214) diluting component used to evaluate the high-viscosity residual fractions. The resulting values of TS (total sediment) and TSA (total sediment accelerated) parameters showed a high correlation, mainly for the most monitored parameter TSA, with dynamic viscosity at a temperature of 150 °C (R 2 TSA = 0.914) and C/H ratio (R 2 TSA = 0.929). Dependence of DV 150 and C/H ratio on asphaltene content representing n-heptane soluble material in residual fractions, as well as precursors of residual fraction instability, was also monitored. Determining the stability of pure residual fractions helps prevent possible technological problems arising during the storage and transport of either pure residual fractions or prepared marine fuels.

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Role of Catalyst in Optimizing Fluid Catalytic Cracking Performance During Cracking of H-Oil-Derived Gas Oils

Cited by 19 publications

References 46 publications

Crude Slate, FCC Slurry Oil, Recycle, and Operating Conditions Effects on H-Oil® Product Quality

Crude Slate, FCC Slurry Oil, Recycle, and Operating Conditions Effects on H-Oil® Product Quality

Improved Brønsted to Lewis (B/L) Ratio of Co- and Mo-Impregnated ZSM-5 Catalysts for Palm Oil Conversion to Hydrocarbon-Rich Biofuels

Evaluation of High-Viscosity Residual Fractions by Hot Filtration

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