Hydrocracking of Fischer‐Tropsch Wax with Tungstovanadophosphoric Salts as Catalysts

Rausch, Peter; Jess, Andreas; Kern, Christoph; Korth, Wolfgang; Kraft, Nannette

doi:10.1002/ceat.201700384

Cited by 3 publications

(2 citation statements)

References 41 publications

(41 reference statements)

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“…Interestingly, the change in the isomer content with carbon number for the N 2 -activated NiMo/Al 2 O 3 catalyst increases remarkably with increasing carbon number over the entire carbon range, C 6 -C 26 . This is in line with the study on hydrocracking C 16 on Pt/HY and Pt-Cs/PV catalysts by Rausch et al [45], which reported that the iso/normal paraffin ratio increases with chain length in the C 4 -C 12 range, and partly consistent with the study of Gamba et al [10], which reported a similar trend after C 10 at 343-375 • C on a Pt/Si-Al catalyst (i.e., below C 10, the isomer fraction decreases with increasing chain length).…”

Section: Isoparaffin Content Versus Carbon Numbersupporting

confidence: 93%

Hydrocracking of Octacosane and Cobalt Fischer–Tropsch Wax over Nonsulfided NiMo and Pt-Based Catalysts

Kang

Jacobs

et al. 2021

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The effect of activation environment (N2, H2 and H2S/H2) on the hydrocracking performance of a NiMo/Al catalyst was studied at 380 °C and 3.5 MPa using octacosane (C28). The catalyst physical structure and acidity were characterized by BET, XRD, SEM-EDX and FTIR techniques. The N2 activation generated more active nonsulfided NiMo/Al catalyst relative to the H2 or H2S activation (XC28, 70–80% versus 6–10%). For a comparison, a NiMo/Si-Al catalyst was also tested after normal H2 activation and showed higher activity at the same process conditions (XC28, 81–99%). The high activity of the NiMo/Al (N2 activation) and NiMo/Si-Al catalysts was mainly ascribed to a higher number of Brønsted acid sites (BAS) on the catalysts. The hydrocracking of cobalt wax using Pt/Si-Al and Pt/Al catalysts confirmed the superior activity of the Si-Al support. A double-peak product distribution occurred at C4–C6 and C10–C16 on all catalysts, which illustrates secondary hydrocracking and faster hydrocracking at the middle of the chain. The nonsulfided NiMo/Al and Pt/Al catalysts, and NiMo/Si-Al catalyst produced predominantly diesel (sel. 50–70%) and gasoline range (sel. > 50%) hydrocarbons, respectively, accompanied by some CH4 and light hydrocarbons C2–C4. On the other hand, the hydrocarbon distribution of the Pt/Si-Al varied with conditions (i.e., diesel sel. 87–90% below 290 °C or gasoline sel. 60–70% above 290 °C accompanied by little CH4) The dependence of the isomer/paraffin ratio on chain length was studied as well. The peak iso/paraffin value was observed at C10–C13 for the SiAl catalyst.

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Section: Isoparaffin Content Versus Carbon Numbersupporting

confidence: 93%

Hydrocracking of Octacosane and Cobalt Fischer–Tropsch Wax over Nonsulfided NiMo and Pt-Based Catalysts

Kang

Jacobs

et al. 2021

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“…The role of the refining reactor is to remove organic impurities [3,4] and to provide qualified feedstock for the cracking reactor, in which the macromolecular organics are cracked into small-molecule organics. The ''refining-cracking'' structure endows the hydrocracking process with a wide feedstock processing range and high production flexibility [5,6]. As a key step in hydrocracking, the control performance of the fractionation process directly affects the production efficiency and product quality.…”

Section: Introductionmentioning

confidence: 99%

An Intelligent Tray Efficiency Estimation Method for the Fractionation System of Industrial Hydrocracking Processes

et al. 2019

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An engineering-oriented tray efficiency estimation method for the hydrocracking fractionation system is proposed. As key parameter of the fractionation system, estimation of the tray efficiency is important and challenging due to the large computational burden given by the complexity of the fractionation system. Here, the high-dimensional tray efficiencies are screened first and divided into groups according to the spatial position. Then, an improved artificial bee colony algorithm is proposed to estimate the tray efficiencies of each group, in which two taboo lists are introduced to avoid repetitive search. The proposed method is validated using real industry data. The results demonstrate that the proposed approach is efficient in terms of estimation accuracy.

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Study on pyrolysis characteristic of iron-based waste catalyst containing wax from Fisher-Tropsch synthesis by TG and Py-GCMS

Wang

Cui

et al. 2022

Thermochimica Acta

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Hydrocracking of Fischer‐Tropsch Wax with Tungstovanadophosphoric Salts as Catalysts

Cited by 3 publications

References 41 publications

Hydrocracking of Octacosane and Cobalt Fischer–Tropsch Wax over Nonsulfided NiMo and Pt-Based Catalysts

Hydrocracking of Octacosane and Cobalt Fischer–Tropsch Wax over Nonsulfided NiMo and Pt-Based Catalysts

An Intelligent Tray Efficiency Estimation Method for the Fractionation System of Industrial Hydrocracking Processes

Study on pyrolysis characteristic of iron-based waste catalyst containing wax from Fisher-Tropsch synthesis by TG and Py-GCMS

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