The pulsed fluid beds can overcome these problems , especially for uneasily fluidized and special materials , and it has lower pressure drop , small fluidization velocity , height and saving energy etc 脈沖流化床干燥器用來(lái)干燥不易流化的物料和有特殊要求的物料,能有效克服上述弊端,且具有壓降低、流化速度小、床層高度小、節(jié)能等優(yōu)點(diǎn)。
Using sawdust as raw material , under the condition of 2 % - 4 % opening rate of distributor , the effects of particle size and sawdust bed height on fluidization velocity in cold bubbling fluidized bed were determined 摘要冷態(tài)條件下,在鼓泡流化床中采用木屑為原料,分布板在2 % ~ 4 %不同開(kāi)孔率的條件下,分別考察了原料粒徑和床層高度對(duì)木屑流化速度的影響。
The results of this experiment showed that pressure drop and flow velocity are related in quadratic function ; the effects of opening rate of distributor sad bed height on critical fluidization velocity are rather slight , while the effect of particle size on critical fluidization velocity is very obvious 得出結(jié)論:分布板壓降和流速成二次函數(shù)關(guān)系;以木屑為原料,分布板開(kāi)孔率和床層高度對(duì)臨界液化速度的影響不大,粒徑分布對(duì)臨界流化速度隨粒徑的增大而增加。