Journal article
Studies on temperature characteristics and initial formation interface during cyclopentane-methane hydrate formation in large-scale equipment with bubbling
Technical University of Denmark1
Chinese Academy of Sciences2
Center for Energy Resources Engineering, Centers, Technical University of Denmark3
CERE – Center for Energy Ressources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark4
Department of Chemical and Biochemical Engineering, Technical University of Denmark5
In this work, temperature characteristics during hydrate formation were investigated in the cyclopentane-methane system using large-scale equipment with bubbling. The volume in each experiment was increased by a factor of 80 compared with previous work. A group of scaled-up experiments, under the optimal condition based on experiments in the smaller crystallizer, was carried out to verify the scale-up potential of hydrate-based thermal fluid production process.
Another group of scaled-up experiments were performed with different variables (volume ratio of cyclopentane to water, gas/liquid ratio and pressure) to figure out the initial hydrate formation interface and optimize the temperature of the thermal fluid. Experimental results illustrate that hydrate-based thermal fluid production process can be scaled up by a factor of 80, however, the temperature of the thermal fluid needs to be optimized by adjusting variables accordingly.
Moreover, the liquid cyclopentane/water interface more than the gas/liquid interface affects hydrate formation and hydrate accumulation. In particular, the hydrate formation interface initially occurs on the water side near the liquid cyclopentane/water interface. A large amount of hydrate accumulates in the bulk liquid cyclopentane phase, forming new hydrate formation interfaces.
Thermal fluid with a specific temperature range can be produced based on the heat released and conducted from the hydrate formation interfaces.
Language: | English |
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Year: | 2020 |
Pages: | 114076 |
ISSN: | 18729118 and 03062619 |
Types: | Journal article |
DOI: | 10.1016/j.apenergy.2019.114076 |
ORCIDs: | 0000-0002-0797-1235 and von Solms, Nicolas |