2010 Fiscal Year Final Research Report
Development of evaluation techniques of dispersibility of high-consistency pulp-suspension and fiber behavior in dispersion ducts
| Project/Area Number |
20560173
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Fluid engineering
|
|---|
| Research Institution | Kinki University |
|---|
Principal Investigator |
SUMIDA Masaru Kinki University, 工学部, 教授 (60113403)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 混相流 / パルプ・紙 / 繊維濃度 / 流体計測 / 後流 / ヘッドボックス |
|---|
| Research Abstract |
An optical measuring method for evaluating the fiber concentration was developed for flowing pulp liquid. This method was applied to a fully developed steady flow in ducts with a square cross section. It is found that the flow mechanism of pulp-suspension in ducts can be classified into five patterns. Moreover, the relationship between the degree of uniformity of the fiber concentration and the flow rate was made clear. In addition, visualization and fiber-concentration measurements of wakes from the partition plates inserted in ducts were executed and useful basic data for the optimization of headbox of the papermaking machine were presented.
|
