互补式布浆器分布特性影响因素的实验研究

Experimental Study on Influence Factors Affecting Distribution Characteristic of Complementary Pulp Distributor

关键词:  互补布浆  影响因素  回流比  进料  混合室  布浆性能

Key Words:complementary distribution  influence factors  reflux ratio  feed  mixing chamber  distribution characteristic

摘要:采用互补式布浆方法，利用简化设计法设计了互补式布浆器。通过实验研究了不同回流比、布浆总管内浆料质量流量波动、3种混合室结构下互补式布浆器的布浆性能。结果表明，回流比分别为8%、10%、12%、15%时，混合室出口的浆料质量流量分布曲线与期望值非常接近，最大偏差仅为0.37%。两个布浆总管浆料质量流量不相等时，浆料分布的均匀性变差，随着浆料质量流量波动的加大，支管的浆料质量流量偏差显著增加。不同混合室结构内浆料的混合效果差异较大，3种结构混合室支管浆料质量流量的最大偏差分别为-0.342%、-0.285%、0.258%，多腔混合室好于单腔混合室。

Abstract:The distributor based on complementary distribution was designed by simplified design method. Distribution characteristic of complementary distributor was experimentally studied under different reflux ratio， fluctuation of flowed rate in the rectangular tapered distributors， different structure of mixing chambers.The results showed that when reflux ratio varied from 8%， 10%， 12% to 15%， distribution of mass flow rate out of mixing chamber was very closed to the expected values curve. The maximum deviation of mass flow rate was only 0.37%. When inlet amounts of two rectangular tapered distributors were not equal， uniformity of pulp distribution became worse. With increase of fluctuation of mass flow rate， deviation of mass flow rate of branch pipe increased significantly. The mixing effect of pulp in different mixing chamber structures was quite different. The maximum deviation of flow rate of branch pipe in the three structure mixing chambers were only -0.342%，-0.285%， 0.258% respectively．