| Project/Area Number |
16K18276
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | ハイドレート / ガス分離 / ガス吸収 / 流動特性 / 固形分率 / スラリー / 流動性 / 高分子分散剤 / セミクラスレートハイドレート / 化学工学 / 平衡輸送物性 / ハイドレートスラリー |
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| Outline of Final Research Achievements |
In this work, the objective was to investigate rheological characteristics and CO2 separation behavior in tetra-n-butyl ammonium bromide (TBAB) semi-clathrate hydrate (SCH) slurries with dispersants. The solid fraction of the SCH slurries increased through CO2 absorption by using a method based on electrical conductivity. Dispersibility of SCH slurries with 0.86 wt% polyvinyl alcohol (PVA) (mean degree of polymerization of 2000) was the highest among the PVA concentrations examined. CO2 absorption rate in SCH slurries with 0.86 wt% PVA was lower than that in SCH slurry without PVA. However, CO2 absorption amount in SCH slurries with 0.86 wt% PVA was higher than that in SCH slurry without PVA due to keeping the dispersed state of SCH slurry through CO2 absorption. In a bubble column reactor, it is important that the contact time is increased by reducing the bubbles to improve gas separation factor.
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