流化床气化炉带出细粉非机械返料机构研究
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摘要: 对非机械返料机构（流动密封阀式）在流化床气化炉上的应用进行了研究。结果表明，流动密封阀式返料机构同样可以在流化床气化炉上应用；在返料室截面积、供料室截面积、水平孔口面积比为1∶1∶0.5时，通过流化风、松动风或侧吹风的组合充气获得了良好的开启、运行及调节性能；同时考察了压力对返料机构运行的影响；最后得到了适合流化床气化炉非机械返料机构操作的经验公式，试验值和计算值符合较好。对改进流化床气化炉循环返料系统和提高气化炉碳转化率提供了理论指导和设计参考。Abstract: The application of non-mechanical valve (loop seal) in a fluidized bed gasifier was studied. The result shows that the loop seal can be well applied in the fluidized bed gasifier. Working under fluidized air and flexible air or fluidized air and side air can obtain the good operation of opening/locking and controlling when the ratio of recycle chamber sectional area, supply chamber sectional area and horizontal slit area is 1∶1∶0.5. Meanwhile, the effect of pressure on the loop seal was studied. At last, the empirical equations of solid flow rate and air flow rate were obtained. The results show that predicted data is in good agreement with the experiment data.
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Key words:
- fluidized bed gasifier /
- loop seal /
- empirical equations
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