2017 Fiscal Year Final Research Report
Rheological characteristics and CO2 separation behavior in semi-clathrate hydrate slurries for fluidized gas separation process
| Project/Area Number |
16K18276
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| 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 |
|---|
| 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.
|
| Free Research Field |
化学工学，環境化学，分離工学
|
