Hydrokinetic optimization of commercial scale slurry bubble column reactor

Strasser, Wayne; Wonders, Alan

doi:10.1002/aic.12629

Cited by 8 publications

(3 citation statements)

References 36 publications

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“…Bubble column reactors are operated under high pressure in a variety of chemical processes, such as hydrocracking of petroleum residue (5–21 MPa), Fischer‐Tropsch synthesis (1–5 MPa), benzene hydrogenation (5 MPa), and oxidation of para‐xylene to terephthalic acid (0.3–3 MPa) . In the last three decades, many researchers have found that pressure has a significant effect on the hydrodynamics of bubble columns.…”

Section: Introductionmentioning

confidence: 99%

A unified theoretical model for breakup of bubbles and droplets in turbulent flows

et al. 2014

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Pressure has a significant effect on bubble breakup, and bubbles and droplets have very different breakup behaviors. This work aimed to propose a unified breakup model for both bubbles and droplets including the effect of pressure. A mechanism analysis was made on the internal flow through the bubble/droplet neck in the breakup process, and a mathematical model was obtained based on the Young–Laplace and Bernoulli equations. The internal flow behavior strongly depended on the pressure or gas density, and based on this mechanism, a unified breakup model was proposed for both bubbles and droplets. For the first time, this unified breakup model gave good predictions of both the effect of pressure or gas density on the bubble breakup rate and the different daughter size distributions of bubbles and droplets. The effect of the mother bubble/droplet diameter, turbulent energy dissipation rate and surface tension on the breakup rate, and daughter bubble/droplet size distribution was discussed. This bubble breakup model can be further used in a population balance model (PBM) to study the effect of pressure on the bubble size distribution and in a computational fluid dynamics‐population balance model (CFD‐PBM) coupled model to study the hydrodynamic behaviors of a bubble column at elevated pressures. © 2014 American Institute of Chemical Engineers AIChE J, 61: 1391–1403, 2015

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Section: Introductionmentioning

confidence: 99%

A unified theoretical model for breakup of bubbles and droplets in turbulent flows

et al. 2014

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“…Microbubble (diameter between 1 μm and 1 mm) can markedly intensify gas–liquid and gas–liquid–solid mass transfer process, due to its unique properties which includes a large specific surface area, long residence time, and pressure difference between inside and outside of the microbubble 1–3 . Microbubble has widely been used in bubble column, 4 slurry bed reactor, 5 stirred tank, 6 fixed bed reactor (FBR), 7 and so on. In recent years, microbubble shows great potential for application in hydrogenation reaction in FBR 8–10 .…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics, mass transfer, and hydrogenation performance of a HiGee‐aided fixed bed reactor

Liao,

Jiang,

Wang

et al. 2024

AIChE Journal

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Microbubble shows great potential for hydrogenation reaction in fixed bed reactors (FBRs). However, the lack of understanding of the hydrodynamic behaviors of microbubble swarm in FBR limits the reactor design. In this work, a pilot‐scale HiGee‐aided fixed bed reactor (HFBR), including a HiGee microbubble generator (HMG) and a catalyst bed, has been developed and then applied for poly alpha olefin 4 (PAO 4) hydrogenation. An empirical correlation of Sauter mean diameter (d32) of microbubbles at the inlet and outlet of catalyst bed was established. The gas holdup (φb) of catalyst bed with HMG was 5–10 times higher than that without HMG. Based on d32 and φb, the effective interfacial area in HFBR was calculated as 2000–6000 m2/m3. Compared with static mixer‐aided fixed bed reactor, the aromatic content of PAO 4 hydrogenated in the HFBR was 56%–69% lower, which shows bright future for industrial application.

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“…A number of recent studies address the effect of high-pressure operation on the hydrodynamics and mass-and heattransport phenomena in these contactors, such as those reported by Lou et al [1], Yang et al [2], and Strasser and Wonders [3]. As for reactor performance, Deckwer [4] analyzed the effect of increased pressure on the behavior of isothermal BCRs.…”

Section: Introductionmentioning

confidence: 99%

Steady‐State Multiplicity in High‐Pressure Bubble Column Reactors

Shaikh

Binous

2013

Chem Eng & Technol

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The effect of pressure on the possible existence of multiple steady states in bubble column reactors is investigated. A mathematical model involving fast pseudo first-order kinetics is employed to describe the performance of non-isobaric, non-isothermal reactors. The numerical analysis reveals that the existence of multiplicity is sensitive to pressure variation, yet high-pressure operating conditions do not necessarily lead to a higher likelihood of multiplicity in these contactors.

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Hydrokinetic optimization of commercial scale slurry bubble column reactor

Cited by 8 publications

References 36 publications

A unified theoretical model for breakup of bubbles and droplets in turbulent flows

A unified theoretical model for breakup of bubbles and droplets in turbulent flows

Hydrodynamics, mass transfer, and hydrogenation performance of a HiGee‐aided fixed bed reactor

Steady‐State Multiplicity in High‐Pressure Bubble Column Reactors

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