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A Novel Configuration For Fluidized Bed

机译：流化床的新配置

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摘要

A novel configuration for fluidized bed has been developed. It is basically a bubbling fluidized bed furnished with a spouted jet in the upper part of the bed. A part of gases is fed through the distributor to fluidize bed solids. The remaining part is fed through a vertical pipe creating a jet-fountain zone. A distinct feature of the novel configuration different from previous spouted bed patents and configurations is that the jet spout height is independent of the bed height. The experiments carried out using the novel configuration furnish promising results. The power consumption in delivering gases is found much lower when applying the novel configuration. Moreover, bubble sizes reduce considerably in the main bed as only a part of gases passes through it. Tests on combustion of a gaseous fuel indicate that the novel configuration enables smooth combustion of gaseous fuels and a rapid reliable method for initial heating of fluidized bed combus-tor. Staged air combustion technique is also applied. Drying silica gel has been tested in the novel configuration and in the conventional fluidized bed. Results demonstrate that the overall mass transfer rate is considerably higher in the novel-configuration, particularly, at higher air flowrate.
机译：已经开发出用于流化床的新颖构造。它基本上是鼓泡的流化床，在床的上部配有喷嘴。一部分气体通过分配器进料以流化床固体。其余部分通过竖管进料，形成射流喷泉区。与先前的喷头床专利和构造不同的新颖构造的显着特征是喷射喷头的高度与床的高度无关。使用新型配置进行的实验提供了可喜的结果。当采用新颖配置时，发现输送气体的功耗要低得多。此外，由于只有一部分气体通过，所以气泡尺寸在主床中大大减小。对气态燃料燃烧的测试表明，该新颖的配置能够使气态燃料平稳燃烧，并且是一种用于流化床燃烧器初始加热的快速可靠方法。还应用了分级空气燃烧技术。干燥硅胶已在新型配置和常规流化床中进行了测试。结果表明，在新型结构中，特别是在较高的空气流量下，整体传质速率要高得多。

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