Optimization of crude oil hydrotreating process as a function of operating conditions: Application of response surface methodology

Bhran, Ahmed A.; Shoaib, Abeer M.; Umana, Blessing

doi:10.1016/j.compchemeng.2016.03.026

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…Conversely, hydrotreating is less effective for nitrogen removal, which was reduced by only ∼15%. A deeper nitrogen removal is known to require higher processing temperatures, 25 especially for more recalcitrant heterocyclic compounds, which are typical products of the Maillard reaction.…”

Section: ■ Apci Fticr Msmentioning

confidence: 99%

Co-processing of Hydrothermal Liquefaction Sewage Sludge Biocrude with a Fossil Crude Oil by Codistillation: A Detailed Characterization Study by FTICR Mass Spectrometry

et al. 2021

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Co-processing renewable feedstock in existing refineries could be a prompt and ready-to-use approach to decarbonize the transportation sector, without large modifications to current processing infrastructures. In this study, we explore the possibility of codistilling a blend of fossil crude with hydrothermal liquefaction (HTL) biocrude from primary sewage sludge. HTL biocrude is indeed gaining an increasingly relevant role, because it can be produced from a huge variety of biomass feedstock, including wet byproducts, with no competition with food or feed applications. Despite the highly valuable properties of HTL in comparison with other bio-oils (high heating value, relatively low heteroatoms content, etc.), its introduction in a refinery distillation unit can still be problematic, because of its high acidity and inorganics content. Therefore, partial hydrotreatment was performed prior to blending with a low-sulfur fossil oil, which allowed a blending ratio of 1:4. Codistillation tests were compared with an analogous test with pure fossil oil, in order to assess the contribution of the biomass feed. The obtained distilled cuts were fully analyzed, and a petroleomic approach employing FTICR mass spectrometry was used for a more-detailed characterization at the molecular level. Results showed that biocrude mostly contributes to the high boiling point fractions, especially diesel and residue, although a significant contribution can be also observed to the kerosene range. However, significant amounts of nitrogen were found in the distilled fractions, corresponding to compounds recalcitrant to hydrotreating, resulting in a different carbon number and double-bond equivalent (DBE) distribution. This issue could be controlled by reducing the blending ratio or with specific upgrading treatments. Therefore, codistillation of HTL biocrude with fossil oil is a promising route for the introduction of renewables in the existing refineries.

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Section: ■ Apci Fticr Msmentioning

confidence: 99%

Co-processing of Hydrothermal Liquefaction Sewage Sludge Biocrude with a Fossil Crude Oil by Codistillation: A Detailed Characterization Study by FTICR Mass Spectrometry

et al. 2021

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“…The relations among the catalyst cost, operating cost, and desulfurization benefit were also studied. Bhran et al adopted the quadratic-polynomial equations to represent the hydrogenation reaction kinetics which were then used to optimize the operating conditions of an HDT process and achieve maximum conversions of impurities in the feed oil. The optimization of a shale oil HDT process was conducted based on HDS, hydrodenitrogenation (HDN), and saturation of aromatics (HDA) kinetics for maximizing the transportation fuel yields with ultralow sulfur and nitrogen .…”

Section: Introductionmentioning

confidence: 99%

Multi-objective Operational Optimization of a Hydrotreating Process Based on Hydrogenation Reaction Kinetics

Wang

Zheng

et al. 2018

Ind. Eng. Chem. Res.

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Utility consumptions in hydrotreating (HDT) units are rapidly increasing because more heavy and sour crude oil are being processed to satisfy the increasing market demand of clean fuels, which then cause the direct and indirect emissions of CO2 and SO2. The environmental impacts of utilities should be considered when optimizing an HDT unit. A multi-objective optimization is proposed to reduce the operating cost and environmental impacts of utilities and products based on hydrogenation reaction kinetics. A cracked diesel HDT unit is adopted to illustrate the proposed model which is solved by ε-constrains method to obtain the Pareto fronts and three scenarios: minimum operating cost, minimum environmental impacts, and the best compromise. For all scenarios, increasing temperature and decreasing pressure can reduce both the operating cost and environmental impacts. The decreasing of sulfur content in product is at the expense of consuming more utilities. It is not always favorable when the sulfur content of the product is decreasing. Thus, there is an optimum desulfurization degree in the HDT unit when reducing the environmental impacts. Therefore, the environmental impacts of an HDT process, especially for the impacts of the production process, should not be ignored when optimizing an HDT process. The most efficient way to reduce both the operating cost and environmental impacts is to reduce the hydrogen consumption.

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Experimental Study and Modeling Approach of Response Surface Methodology Coupled with Crow Search Algorithm for Optimizing the Extraction Conditions of Papaya Seed Waste Oil

et al. 2020

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Optimization of crude oil hydrotreating process as a function of operating conditions: Application of response surface methodology

Cited by 10 publications

References 24 publications

Co-processing of Hydrothermal Liquefaction Sewage Sludge Biocrude with a Fossil Crude Oil by Codistillation: A Detailed Characterization Study by FTICR Mass Spectrometry

Co-processing of Hydrothermal Liquefaction Sewage Sludge Biocrude with a Fossil Crude Oil by Codistillation: A Detailed Characterization Study by FTICR Mass Spectrometry

Multi-objective Operational Optimization of a Hydrotreating Process Based on Hydrogenation Reaction Kinetics

Experimental Study and Modeling Approach of Response Surface Methodology Coupled with Crow Search Algorithm for Optimizing the Extraction Conditions of Papaya Seed Waste Oil

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