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自第二次石油危机以来,各钢铁厂都以无油操作为目标采取了各种措施。措施之一是高炉风口喷吹物以煤粉代替重油。喷吹煤粉技术,采用气流输送煤粉,在气固二相流态化下从高炉风口喷入高炉。其计量与控制,过去常采用在固、气体混合前的单相状态下分别进行。然而,喷吹煤粉的风口数日多达40个,如果在每个风口上均设置计量控制装置,从场地和投资方面都是困难的。因此,对在二相流态化情况下引出支流的方法及能进行多路分配的煤粉卸出设备方面进行
Since the second oil crisis, various steel mills have taken various measures aimed at oil-free operations. One of the measures is to use blast furnace tuyere to replace coal with heavy oil. Pulverized coal injection technology, the use of air transport pulverized coal in the gas-solid two phase fluidized blast furnace tuyere blasting. Its measurement and control, the past often used in the solid, gas mixture before the single-phase state separately. However, pulverized coal injection has up to 40 days in a few days, and if metering controls are provided on each of the tuyeres, it is difficult in terms of venue and investment. Therefore, the method of withdrawing the tributaries in the case of two-phase fluidization and the pulverizing apparatus capable of distributing the pulverized coal are carried out