Experimental study of gaseous effluent and solid conversion in a fluidized bed hydrolysis reactor for hydrogen production

Pope, Kevin; Daggupati, V.N.; Naterer, G.F.; Gabriel, Kamiel

doi:10.1016/j.ijhydene.2012.01.142

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…The bed pressure drop in the fluidized bed reactor was measured using inductance-based differential pressure transmitter (DPT) with purge flow to avoid choking of sensing lines. Electrical resistance heaters with PID controllers (8) were used to maintain the desired reaction temperature in the reactor, lineheater, and steam generation vessel. Nichrome wire heaters insulated with ceramic beads were wound externally around the reactor and line heater.…”

Section: Methodsmentioning

confidence: 99%

“…Reported literature on the hydrolysis reaction include experimental studies on three different types of reactors, viz., packed bed, − fluidized bed, and spray reactor. , The laboratory-scale experiments carried out in packed-bed reactors were focused on reaction feasibility, characterization, and kinetics determination. The presence of CuCl as a minor side product was reported by Lewis and Ferrandon from thermal decomposition of CuCl 2 .…”

Section: Introductionmentioning

confidence: 99%

“…The authors suggested that CuO can be formed either from Cu(OH) 2 or Cu 2 OCl 2 decomposition. Pope et al8 carried out hydrolysis experiment in a fluidized bed reactor at 400 °C and reported a reaction rate of 0.05 HCl moles/(m 3 min) based on the volume of reactant CuCl 2 assuming negligible CuCl 2 decomposition to CuCl. The reaction rate decreased to 0.03 mol/(m 3 min) in 0.5 h, which indicated the increase in physical resistance because of the ash layer formation.…”

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confidence: 99%

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Experimental Study on the Mechanism and Kinetics of CuCl₂ Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Thomas

Baveja

Shenoy

et al. 2020

Ind. Eng. Chem. Res.

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Hydrolysis of CuCl 2 is the water splitting step of the Cu−Cl thermochemical cycle, where CuCl 2 reacts with steam to produce Cu 2 OCl 2 and HCl. In the present work, this gas−solid reaction was investigated to understand the mechanism and kinetics. Experiments were conducted in a semibatch fluidized bed reactor to study the effect of temperature (275−375 °C), steam mole fraction (0.4−0.9), and reaction time (0−3 h). The challenges due to the hygroscopic nature of the reactant, product agglomeration, and multiple side reactions to achieve smooth and consistent reactor performance were overcome by the addition of inert additives during fluidization. The analysis of the mechanism showed that the desired product Cu 2 OCl 2 is formed initially and further undergoes decomposition to CuO and CuCl 2 . Also, with increasing temperatures, the yield of Cu 2 OCl 2 decreases because of the formation of CuCl from reactant decomposition. The results indicate that a minimum steam mole fraction of 0.5 is required to prevent the formation of side product CuCl in the temperature range of 300−325 °C. The minimum steam requirement for maximum yield to Cu 2 OCl 2 was found to increase with increase in temperature.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Experimental Study on the Mechanism and Kinetics of CuCl₂ Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Thomas

Baveja

Shenoy

et al. 2020

Ind. Eng. Chem. Res.

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“…In a fluidized bed reactor the particle had a mean average of 265 µm, operating parameters were optimized, and particle conversions were achieved using excess steam [5]. The physical reaction resistances during the initial 30 min reduced the reaction rate by 40% and was attributed to an increase of film diffusion resistance [5]. In a study by Thomas et la.…”

Section: Introductionmentioning

confidence: 99%

Morphology and agglomeration of copper chloride particles in the thermochemical Cu-Cl cycle of hydrogen production

Radwan,

Pope,

Hawboldt

et al. 2023

Progress in Canadian Mechanical Engineering. Volume 6

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Hydrogen generation from the thermochemical copper-chloride (Cu-Cl) cycle is a promising clean energy process due to lower operating temperature relative to comparable cycles and can be integrated with solar and nuclear systems. This study focuses on the impact of CuCl2 particle size and morphology in the hydrolysis reaction step. The particle size was studied using crushing and crystallization, and the morphology was analyzed using a scanning electron microscope (SEM). This data was used as input into the shrinking core model (SCM) and compared with previous experimental data. Prior to crushing and crystallization, the material had a monodisperse size distribution with a diameter between 70 -200 µm and a length of 200 -650 µm. After crushing, the material was non-uniform in shape and sizes with a cylindrical or cuboid shape with a diameter of 20 -70 µm and length range of 30 -150 µm. Particles less than 10 µm were spherical in shape. Agglomerated particles forming irregular flakes were observed after crystallization. Furthermore, the SCM indicated that the reaction control step with spherical particle assumption is the most accurate model.

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Kinetic and hydrodynamic analyses of chemically reacting gas-particle flow in cupric chloride hydrolysis for the Cu-Cl cycle

Farsi

Kayhan

Zamfirescu

et al. 2019

International Journal of Hydrogen Energy

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Experimental study of gaseous effluent and solid conversion in a fluidized bed hydrolysis reactor for hydrogen production

Cited by 10 publications

References 13 publications

Experimental Study on the Mechanism and Kinetics of CuCl₂ Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Experimental Study on the Mechanism and Kinetics of CuCl₂ Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Morphology and agglomeration of copper chloride particles in the thermochemical Cu-Cl cycle of hydrogen production

Kinetic and hydrodynamic analyses of chemically reacting gas-particle flow in cupric chloride hydrolysis for the Cu-Cl cycle

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Experimental study of gaseous effluent and solid conversion in a fluidized bed hydrolysis reactor for hydrogen production

Cited by 10 publications

References 13 publications

Experimental Study on the Mechanism and Kinetics of CuCl2 Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Experimental Study on the Mechanism and Kinetics of CuCl2 Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Morphology and agglomeration of copper chloride particles in the thermochemical Cu-Cl cycle of hydrogen production

Kinetic and hydrodynamic analyses of chemically reacting gas-particle flow in cupric chloride hydrolysis for the Cu-Cl cycle

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Experimental Study on the Mechanism and Kinetics of CuCl₂ Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor

Experimental Study on the Mechanism and Kinetics of CuCl₂ Hydrolysis Reaction of the Cu–Cl Thermochemical Cycle in a Fluidized Bed Reactor