SIDE-OUTLET SPOUTED BED WITH INNER DRAFT-TUBE FOR SMALL-SIZED SOLID PARTICLES
SIDE-OUTLET SPOUTED BED WITH INNER DRAFT-TUBE FOR SMALL-SIZED SOLID PARTICLES
复制标题
带有内导流管的侧出口喷动床，适用于小尺寸固体颗粒
DOI：
10.1252/jcej.11.125
复制
发表时间：
1978
影响因子：
0.8
通讯作者：
K. Takeda
中科院分区：
文献类型：
--
作者：
Hirotsugu Hattori;K. Takeda
在常用的顶出式喷动床中，固体颗粒的尺寸被限制为相对较粗的颗粒。如Mathur和Lim所建议的，使用粗颗粒对于进行非均相气相反应是不利的。本文介绍了一种尝试，以减少颗粒尺寸的侧出口喷动床，这是以前提出的。与流化床中使用的颗粒一样小的颗粒也可以用于具有内导流管的侧出口喷动床中。根据观察到的环隙内气体流动模式，计算了反应速率与颗粒尺寸无关和相关两种情况下的气体转化率。从气体转化率的计算结果可以看出，内导流管侧出式喷动床的气体转化率高于其他喷动床。对气体出口的结构进行了改造，使之适合于小尺寸颗粒的使用。代替在气体出口开口上放置筛网，固定的固体床被附接在围绕环的开口外部。
In the commonly used top-outlet spouted bed, the solid particles are restricted in size to relatively coarse ones. As suggested by Mathur and Lim, the use of coarse particles would not be advantageous for carrying out heterogeneous gas-phase reactions. This paper describes an attempt to reduce the particle size for the side-outlet spouted bed which was previously proposed. Particles as small as those used in the fluidized bed may also be used in the side-outlet spouted bed with inner draft-tube. The gas conversions have been calculated, based on the observed gas flow pattern in the annulus, for the cases of both independent and dependent of reaction rate on particle size. From the results of the calculated gas conversions, it was found that the side-outlet spouted bed with inner draft-tube gave higher gas conversions than any other spouted beds. The structure of the gas outlet has been reformed so as to be suitable for the use of small-sized particles. Instead of putting screens on the gas outlet openings, a stationary solid bed has been attached outside the openings surrounding the annnulus.