2016 Fiscal Year Final Research Report
Application of divergent channels to inducing and optimizing fiber dispersion in flowing high-consistency pulp-suspension
| Project/Area Number |
26420127
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Kindai University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 紙・パルプ / ディフューザ型流路 / パルプ繊維濃度 / ヘッドボックス / 繊維分散 |
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| Outline of Final Research Achievements |
This study explored the feasibility of improving the hydraulic headbox of papermaking machines by studying the flow of wood-pulp suspensions in diffuser passages. Pulp fiber concentrations were investigated by flow visualization and optical measurement, the method of which has been developed by the author. Changes in the time-averaged and fluctuation of the fiber concentration along the flow direction were examined. The effects of the working pulp-suspension concentration and the divergence angle of the diffusers on them were investigated systematically. In addition, a discussion was given for the degree of uniformity of the fiber-concentration distribution along the diffuser axis.
The basic findings obtained from this study are expected to contribute to improving and optimizing headbox of the papermaking machines.
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| Free Research Field |
工学
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