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正向除渣器中纤维流动性与收集效率的模拟分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年01期
Page:
130-134
Column:
研究论文
publishdate:
2014-02-16

Article Info:/Info

Title:
Simulation analysis of flow characteristics and collection efficiencies of fibers in forward cleaner
Article ID:
1000-2006(2014)01-0130-05
Author(s):
ZHANG Jian SHA Jiulong YANG Shuai WANG Chen ZHANG Hui*
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
Keywords:
forward cleaner pulp suspension spherical fiber particle numerical simulation FLUENT
Classification number :
TS733+.4; TQ019; TQ028.5
DOI:
10.3969/j.issn.1000-2006.2014.01.023
Document Code:
A
Abstract:
In order to analyze the flow characteristics and collection efficiency of fiber in the internal pulp suspension field of forward cleaner,the internal pulp suspension field was numerically simulated with FLUENT software according to the swelling performance of fiber between dry and wet fiber, and combined with the concept of spherical fiber particle. The results showed that the particles track number of wet fiber a was higher than that of wet fiber b, while the two kinds of fibers from the accept outlet of forward cleaner, and according to the calculation that the collection efficiencies of fiber a and fiber b were 58% and 55%, respectively. The collection efficiency of fiber gradually decrease along with the increas of density, diameter, length of fiber, and the collection efficiency of fiber was not sensitive to the length of fiber. When the fiber length increased from 1 to 5 mm, the biggest drop value of collection efficiency of fiber was about 6%. The collection efficiency of fiber was sensitive to the density of fiber, and the biggest drop value of collection efficiencies on the two kinds of fibers was about 40% when fiber diameter changes from 10 μm to 70 μm.

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Last Update: 2014-01-15