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The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
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Tetrafluoroethane (R134a) hydrate formation within variable volume reactor accompanied by evaporation and
K Jeong1, Y S Choo1, H J Hong1
1Department of Mechanical, Robotics, and Energy Engineering, Dongguk University, Seoul 100-715, South Korea.
The Review of Scientific Instruments
|April 3, 2015
Summary
This study explores a novel reactor design for gas hydrate desalination, using cyclic volume changes to enhance water production. The findings offer insights for scaling up hydrate formation reactors for efficient seawater desalination.
Area of Science:
- Chemical Engineering
- Materials Science
Background:
- Economic implementation of seawater desalination using gas hydrate technology requires large-scale hydrate formation reactors with high conversion rates.
- Enhancing heat and mass transfer is crucial for maximizing production capacity in scaled-up reactor designs.
Purpose of the Study:
- To gain fundamental knowledge for designing variable volume reactors for tetrafluoroethane (R134a) hydrate slurry production.
- To investigate the hydrate formation kinetics influenced by cyclic volume changes.
Main Methods:
- An experimental test vessel with fixed (140 ml) and variable (0–64 ml) volumes was used.
- Temperatures, pressure, and visual observations were monitored during experiments.
- Cyclic volume changes induced evaporation and condensation, creating agitation and enhancing interface area.
Main Results:
- Alternating evaporation and condensation improved hydrate formation kinetics through enhanced agitation and extended interface area.
- The process leveraged density differences between water, vapor, liquid, and R134a hydrate.
- The study investigated the effects of coolant temperature, piston parameters, and volume change period on hydrate formation.
Conclusions:
- Variable volume reactors utilizing cyclic volume changes show promise for enhancing hydrate formation kinetics.
- The findings provide essential data for designing improved hydrate formation reactors for desalination.
- Further research should focus on reactor design improvements for enhanced efficiency.
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