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基于选煤技术集约化、高效化、经济化的思想,建立了处理能力为40~60 t/h的模块式气固流化床干法选煤系统,与KZA2050型空气重介质干法分选系统相比,可大幅度降低基建及运行成本,减小了占地面积及三维空间。该模块式气固流化床干法选煤系统采用B-A型磁铁矿粉和B-A型煤粉的混合物作为宽粒级加重质,提出了将循环加重质及引风除尘系统的出料直接返回分选机的新型床层调控方法,优化了工艺流程,增强了床层密度和高度的均匀与稳定,提高了流化质量。在此基础上,还详细考查了该干法选煤系统的分选性能,试验结果表明,该系统能有效分选50~6mm的煤炭,当分选密度为1.33、1.61 g/cm3时,所得可能偏差分别为0.05、0.06g/cm3。 相似文献
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电子词典在单片机系统中的应用方法 总被引:1,自引:0,他引:1
介绍在单片机系统中使用改造后的电子词典类电器作为单片机系统键盘、LCD显示设备,或将上述设计作为单片机系统嵌入式模块的一种方法。 相似文献
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阀门变速驱动装置设计 总被引:1,自引:0,他引:1
介绍了可由上位微机进行远距离控制的阀门驱动装置,该装置可作为压力、流量等阀控参数在设定时间内作线性增量的控制设备,装置中包含了阀门特性测量功能。 相似文献
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A 40–60 t/h modularized dry coal beneficiation process with a novel method to control the bed was designed around a gas-solid
fluidized bed separator. Furthermore, the hydrodynamics of medium-solids consisting of wide-size-range magnetite powder (0.3–0.06
mm) and <1 mm fine coal were numerically studied. The simulation results show that the fluidization performance of the wide-size-range
medium-solid bed is good. The separation performance of the modularized system was then investigated in detail using a mixture
of <0.3 mm magnetite powder (mass fraction of 0.3–0.06 mm particles is 91.38 %) and <1 mm fine coal as solid media. The experimental
results show that at separation densities of 1.33 g/cm3 or 1.61 g/cm3, 50–6 mm coal can be separated effectively with probable error, E, values of 0.05 g/cm3 and 0.06 g/cm3, respectively. This technique is beneficial for saving water resources and for the clean utilization of coal. 相似文献
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