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| The Influence of Velocity and Inject Angle of Dilution Water in Headbox on the Effect of Dilution Water Addition |
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| DOI：10.11980/j.issn.0254-508X.2013.05.006 |
| Key Words:headbox dilution water velocity of flow inject angle variable rate of flow adjusting effect |
| Fund Project:科技部科技型中小企业技术创新基金项目（编号：12C26214405137）。 |
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| Abstract:The influence of dilution water velocity and the angle between dilution water branch pipe and pulp distributing branch pipe on the effect of dilution water addition in headbox was analyzed from hydrodynamics point of view. It was found that dilution water addition effect is better and the change of flow rate in pulp distributing branch pipe is less when the angle between dilution water branch pipe and distributing branch pipe is bigger. On the other hand, the same result can be obtained when cross section area ratio of dilution water branch pipe and pulp distributing branch pipe is bigger, i.e. dilution water velocity is decreased. Dilution water velocity is the more important factor compared with the inject angle, because of its greater influence on the flow rate of the pulp distribution branch pipe after adding dilution water. |
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