Determination of thermophysical properties of cyclopentane hydrate using a stirred calorimetric cell

Delroisse, Henry; Plantier, Frédéric; Marlin, Laurent; Dicharry, Christophe; Frouté, Laura; André, Rémi; Torré, Jean-Philippe

doi:10.1016/j.jct.2018.05.023

Cited by 21 publications

(21 citation statements)

References 21 publications

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“…Two thermodynamic parameters including heat of formation and heat capacity have been well reported in literature [60,78,130,186,187]. These two parameters are crucial for the design and optimization of CPH-based desalination [186].…”

Section: Thermodynamic Propertiesmentioning

confidence: 96%

“…Hence, equilibrium temperature reported by Delroisse et al [77] is slightly higher. In another work, Delroisse et al [78] reported the dissociation temperatures of 7.05°C (280.2 °K) by using a stirred calorimetric cell. Their method utilized an agitator to mix the fluid (CP+H 2 O) in a calorimetric cell instead of static condition, as in a normal DSC method.…”

Section: Phase Equilibrium Of Cph In Pure Water With and Without Surfmentioning

confidence: 99%

“…Their method utilized an agitator to mix the fluid (CP+H 2 O) in a calorimetric cell instead of static condition, as in a normal DSC method. This development is believed to provide more accurate data [78].…”

Section: Phase Equilibrium Of Cph In Pure Water With and Without Surfmentioning

confidence: 99%

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Cyclopentane hydrates – A candidate for desalination?

Ho-Van

Bouillot

Douzet

et al. 2019

Journal of Environmental Chemical Engineering

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This article presents a systematic review on the past developments of Hydrate-Based Desalination process using Cyclopentane as hydrate guest. This is the first review that covers all required fundamental data, such as multiphase equilibria data, kinetics, morphology, or physical properties of cyclopentane hydrates, in order to develop an effective and sustainable desalination process. Furthermore, this state-of-the-art describes research and commercialization perspectives. When compared to traditional applications, cyclopentane hydrate-based desalination process could be a promising solution. Indeed, it operates under normal atmospheric pressure, lower operation energies are required, etc… However, there are some challenges yet to overcome. A decision aid in the form of a diagram is proposed for a new cyclopentane hydrates-based desalination process. Hopefully, concepts reviewed in this study will suggest new ideas to advance technical solutions in order to make commercial hydrate-based desalination processes a reality.

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Section: Thermodynamic Propertiesmentioning

confidence: 96%

Section: Phase Equilibrium Of Cph In Pure Water With and Without Surfmentioning

confidence: 99%

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Cyclopentane hydrates – A candidate for desalination?

Ho-Van

Bouillot

Douzet

et al. 2019

Journal of Environmental Chemical Engineering

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“…CH 4 /C 3 H 8 hydrates. The CH 4 /C 3 H 8 gas hydrate growth and morphology were studied in a jacketed highpressure cell, made of 316 stainless steel, with an internal volume of 17 cm 3 . The details of the experimental setup and proceedings can be found in a previous study 6 .…”

Section: Methodsmentioning

confidence: 99%

“…Hydrates start to form instantaneously and are then transported during 6 hours. The water-cut was of 50%, using water at 1 g/dm 3 NaCl at a dose of 3 wt% AA-LDHI, at a constant pressure of 50 bar and 9 °C of subcooling.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the Performance of a New Biodegradable AA-LDHI in Cyclopentane Hydrate and CH4/C3H8 Gas Hydrate Systems

Delroisse

Barreto

Jean-Philippe

et al. 2019

SPE Middle East Oil and Gas Show and Conference

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The main objective of this work is to evaluate the performance of a readily biodegradable anti-agglomerant, called AA-LDHI, not harmful for the environment following the European legislation. It was tested in cyclopentane (CP) hydrate and methane (CH 4)/propane (C 3 H 8) hydrate systems. The performance of AA-LDHI was first tested in a batch reactor by torque measurements with the two hydrate systems in oildominated conditions (70 vol%). The experiments were performed for a subcooling of 6 °C for the CPhydrate and up to 17 °C for the gas hydrate. The impact of AA-LDHI on hydrate growth pattern and on hydrate crystal morphology were investigated by microscopic observations at the water/CP interface for the CP-hydrate system, and at a water/(n-octane + CH 4 /C 3 H 8) interface for the gas hydrate system. Then, AA-LDHI was evaluated in a semi-industrial flow loop. Without surfactant, the hydrate formed a polycrystalline shell at the water/oil interface. With AA-LDHI, large conical hydrate crystals with the vertex pointing to the aqueous phase grew at the interface before sinking in the aqueous phase. The results obtained with both CP and gas hydrates are consistent amongst themselves. In the batch reactor experiments without surfactant, hydrate crystallization led to a significant increase in the torque value and finally to the blockage of the agitator. With AA-LDHI, the torque remained almost constant at the baseline showing that this AA presented good anti-agglomeration performance. The microscopic observation in a CP phase of CP-hydrate particles formed in the reactor showed large waterwettable particles (about 400 μm) gathered in clusters but not agglomerated. AA performance of AA-LDHI was also evaluated in a semi-industrial flow loop (1-inch diameter & 35.6 m total length) in similar conditions with CH 4 /C 3 H 8 mix gas but using real condensate. This experiment proved that the AA-LHDI is fully efficient in transporting safely hydrates.

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Techno‐Economic Evaluation of Cyclopentane Hydrate‐Based Desalination with Liquefied Natural Gas Cold Energy Utilization

Chong

Babu

et al. 2019

Energy Tech

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The clathrate hydrate‐based desalination process coupled with liquefied natural gas (LNG) cold energy (ColdEn‐HyDesal) strengthens energy–water nexus by integrating two energy‐intensive processes into one. A typical HyDesal process that uses a gas as a hydrate former requires elevated pressure for hydrate formation that results in a higher specific energy consumption (SEC). The efficiency of the process improves by adopting hydrate formers with a milder hydrate formation condition, such as cyclopentane (CP). In this study, the ColdEn‐HyDesal process using CP as the hydrate former is modeled and investigated. The results show that the SEC of the ColdEn‐HyDesal process using CP is 0.35 kWh m−3. The effects of water recovery rate, hydrate formation temperature and heating seawater pressure on SEC, volumetric flow rate, exergy efficiency, and fixed capital investment (FCI) are investigated. The water recovery rate is found to have a significant effect on the SEC, volumetric flow rate, exergy efficiency, and FCI, whereas, hydrate formation temperature has a pronounced impact on FCI, while small impacts on SEC, volumetric flow rate, and exergy efficiency. With a lower operating pressure and the elimination of compressor for recycle, the ColdEn‐HyDesal process using CP as the hydrate former further reduces SEC by 58% when compared with gas such as propane as a hydrate‐forming guest.

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Determination of thermophysical properties of cyclopentane hydrate using a stirred calorimetric cell

Cited by 21 publications

References 21 publications

Cyclopentane hydrates – A candidate for desalination?

Cyclopentane hydrates – A candidate for desalination?

Evaluation of the Performance of a New Biodegradable AA-LDHI in Cyclopentane Hydrate and CH4/C3H8 Gas Hydrate Systems

Techno‐Economic Evaluation of Cyclopentane Hydrate‐Based Desalination with Liquefied Natural Gas Cold Energy Utilization

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