Prediction of ultra low sulphur diesel catalyst performance using limited pilot plant data

Hassan-Beck, Haitem; Berrouk, Abdallah S.

doi:10.1016/j.aej.2021.02.062

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Thus, in modern refineries, updated new catalysts have been applied to upgrade the HDS process. [13][14][15][16][17][18][19][20] Temperature, pressure, liquid hour space velocity (LHSV), reactor type, and catalyst type are effective parameters in any catalytic process. Investigation of these parameters for HDS process facilitates the achievement of optimal conditions.…”

Section: Introductionmentioning

confidence: 99%

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Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

Boroujeni

Irankhah

2021

Intl J of Energy Research

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catalysts were synthesized by the wetness impregnation technique. Field emission scanning electron microscopy, X-ray diffraction, and nitrogen physisorption methods were used for characterizing the prepared catalysts. The activity of the synthesized catalysts was studied by passing the mixed naphtha and H 2 over a fixed bed reactor with sulfiding process prior to HDS reactions at ambient pressure, 285 C, LHSV of 5.8 h À1 , and H 2 /HC volumetric ratio of 94. Ni, Co, and Mo with mass percent of 3.5 wt% were loaded on laboratorysynthesized γ-Al 2 O 3 and purchased HZSM5 supports. For promoted Ni Mo/ γ-Al 2 O 3 catalyst, 3.5 wt% Ni and 17 wt% Mo were impregnated on laboratory synthesized γ-alumina support, similar to the commercial industrial catalyst. Ultimately, the HDS reactions over the synthesized Ni Mo/γ-Al 2 O 3 decreased the total sulfur content of mixed naphtha from 430 to 25 ppm wt, as a synthesized catalyst with the best reactor performance and acceptable long-term stability. K E Y W O R D S hydrodesulfurization, mixed naphtha, Ni Mo/γ-Al 2 O 3 , sulfiding, total sulfur content Highlights • Ni/γ-Al 2 O 3 , Ni/HZSM5, Co/HZSM5, Mo/HZSM5, and Ni Mo/γ-Al 2 O 3 catalysts were synthesized and evaluated in HDS reactions of mixed naphtha. • The catalytic performance and characteristic for prepared catalysts were compared with a commercial industrial catalyst supplied by AXENS company. • Synthesized 3.5Ni-17Mo/γ-Al 2 O 3 showed the best catalytic performance with HDS conversion of 94.2%. • All reactor tests were performed according to the operating conditions of an AXENS licensed industrial Naphtha Hydro-Treating (NHT) unit, except process pressure, which was applied atmospheric.

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Section: Introductionmentioning

confidence: 99%

“…Also, environmental standards require that for production of fuels with low sulfur content, new catalysts should be studied and improved. Thus, in modern refineries, updated new catalysts have been applied to upgrade the HDS process 13‐20 …”

Section: Introductionmentioning

confidence: 99%

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

Boroujeni

Irankhah

2021

Intl J of Energy Research

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Bifunctional NiMo/HY-γ-Al2O3 catalysts for an effective production of ultra-low sulfur diesel

Rasrendra,

Maulidanti,

Darlismawantyani

et al. 2023

Case Studies in Chemical and Environmental Engineering

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Enhancing Ultradeep Hydrodesulfurization of Coker Diesel through Adsorptive Predenitrogenation

Ghaloum,

Safa,

Albazzaz

et al. 2024

ACS Omega

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The petroleum refining industry places significant challenge in the production of ultralow-sulfur diesel (ULSD) from various middle distillates with high nitrogen concentration in an energy-efficient and cost-effective way to meet strict environmental regulations as coexisting nitrogen compounds significantly inhibit the ultradeep hydrodesulfurization (HDS). Among all of the approaches reported in the literature for this challenge, a combination of adsorptive denitrogenation (ADN) and HDS has attracted great attention. This study focuses on ultradeep HDS of coker diesel (CD) through a synergistic approach combining ADN over a carbon-based adsorbent and the current HDS process. The study found that the predenitrogenation significantly enhanced the HDS reactivity of CD and greatly reduced the start of run temperature for producing ULSD by even 20 °C, depending on the denitrogenation depth. It results in dominantly decreasing energy and H 2 consumption in the HDS process, and increasing the lifetime of the catalyst. Furthermore, the predenitrogenation prior to HDS significantly improved the quality of the hydrodesulfurized product by decreasing aromatic content and density, increasing the cetane index, and improving the color and stability of the product as the HDS process for producing ULSD can be conducted at a much lower temperature. The study demonstrated the combination of ADN and HDS for producing ULSD from CD on a pilot unit scale, and the advantages and disadvantages of this combination were discussed in comparison with the conventional HDS process. In addition, it was found that there is a good linear relationship between the logarithm of the product sulfur concentration and the HDS reaction temperature, which can be used conveniently to predict the start-of-run temperature to achieve different sulfur levels.

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Prediction of ultra low sulphur diesel catalyst performance using limited pilot plant data

Cited by 3 publications

References 29 publications

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

Bifunctional NiMo/HY-γ-Al2O3 catalysts for an effective production of ultra-low sulfur diesel

Enhancing Ultradeep Hydrodesulfurization of Coker Diesel through Adsorptive Predenitrogenation

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Prediction of ultra low sulphur diesel catalyst performance using limited pilot plant data

Cited by 3 publications

References 29 publications

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al 2 O 3 and HZSM5 in HDS reactions of mixed naphtha

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al 2 O 3 and HZSM5 in HDS reactions of mixed naphtha

Bifunctional NiMo/HY-γ-Al2O3 catalysts for an effective production of ultra-low sulfur diesel

Enhancing Ultradeep Hydrodesulfurization of Coker Diesel through Adsorptive Predenitrogenation

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Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al ₂ O ₃ and HZSM5 in HDS reactions of mixed naphtha