Catalytic performance improvement of styrene hydrogenation in trickle bed reactor by using periodic operation

Wongkia, Atittahn; Suriye, Kongkiat; Nonkhamwong, Anuwat; Praserthdam, Piyasan; Assabumrungrat, Suttichai

doi:10.1007/s11814-012-0220-z

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…Moreover, Aydin et al experimentally demonstrated capability of alternating gas/liquid fast‐mode cyclic operation for controlling foam formation and stability in trickle‐bed reactors operating at high temperature and pressure. In the context of heterogeneous catalytic reactions, an increase in the conversion up to 15 and 18% was reported, respectively, for the hydrogenation of α‐methyl styrene and styrene as a result of implementation of liquid flow modulation . An exhaustive review on cyclic operation in trickle beds is found in Atta et al…”

Section: Introductionmentioning

confidence: 99%

Cyclic operation strategies in inclined and moving packed beds—Potential marine applications for floating systems

Dashliborun

Larachi

Hamidipour³

2016

AIChE Journal

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The hydrodynamics of a periodically operated packed bed subjected to column oscillations and obliquity was studied. Electrical capacitance tomography (ECT) and capacitance wire mesh sensors were employed to measure the local instantaneous liquid saturation in stationary slanted and moving packed beds, respectively. A swell simulator with sixdegree-of-freedom motions was applied to emulate the behavior of floating packed beds. The results revealed that column inclination from the vertical position considerably decayed liquid waves excited by different cyclic operation strategies. However, ON-OFF liquid and gas/liquid alternating cyclic operations showed an attempt to conserve wave identity in the slanted bed and to decrease phase maldistribution resulting from bed inclination. It was also found that symmetric and non-symmetric split ratios of ON-OFF liquid cyclic mode were able to noticeably decrease fluid maldistribution in the oscillating packed bed. This study opens up possible prospects for process intensification of floating packed bed reactors and contactors.

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Section: Introductionmentioning

confidence: 99%

Cyclic operation strategies in inclined and moving packed beds—Potential marine applications for floating systems

Dashliborun

Larachi

Hamidipour³

2016

AIChE Journal

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“…Wongkia et al. () investigated styrene hydrogenation in a TBR. Using periodic operation of the liquid, a maximum improvement of styrene conversion of 18% was observed.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have investigated the operating pressure of TBRs in order to increase the gas-liquid mass transfer, thus achieving higher performance. As with the BHM, high operating pressures are commonly used for this purpose (Wongkia, Suriye, Nonkhamwong, & Praserthdam, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Using such an on-off mode, Liu and Mi (2005) were able to improve conversion and selectivity of hydrogenation of 2-ethylanthraquinone significantly compared with those under steady-state. Wongkia et al (2013) investigated styrene hydrogenation in a TBR. Using periodic operation of the liquid, a maximum improvement of styrene conversion of 18% was observed.…”

Section: Introductionmentioning

confidence: 99%

“…A common approach is a periodic liquid feed modulation with a continuous gas phase (Wongkia et al., ). In this case, a distinction is made between two different periodic operation types, commonly known as flow modulation strategies.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Ullrich

Lemmer

2018

GCB Bioenergy

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Experiments were carried out to investigate the influence of liquid flow modulation of trickle bed reactors (TBR) on biological hydrogen methanation (BHM).The modulation promises to improve the gas-liquid mass transfer and has already been demonstrated in trickle bed reactors of other fields of application. Therefore, the influence of four different circulation intervals with pauses from two to 1,440 min was investigated in TBR for BHM. The results showed that as pause intervals without sprinkling became longer, the methane content increased from 88.61 ± 1.58 vol-% at a circulation interval of 2 min to up to 97.19 ± 0.46 vol-% at a circulation interval of 1,440 min. The analysis of the process liquid indicated a stable biological process at any trial phase. This study demonstrated that the performance of TBR on BHM can be significantly improved by liquid flow modulation, thus significantly reducing operating costs. K E Y W O R D Sbiological methanation, hydrogen, liquid flow modulation, power-to-gas, renewable energy, trickle-bedreactor

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Effect of multiple impeller designs and configurations on the droplet size and uniformity in a 100 L scale stirred tank

Park

Ahan

Lee

2021

Korean J. Chem. Eng.

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Catalytic performance improvement of styrene hydrogenation in trickle bed reactor by using periodic operation

Cited by 8 publications

References 21 publications

Cyclic operation strategies in inclined and moving packed beds—Potential marine applications for floating systems

Cyclic operation strategies in inclined and moving packed beds—Potential marine applications for floating systems

Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Effect of multiple impeller designs and configurations on the droplet size and uniformity in a 100 L scale stirred tank

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