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高炉喷煤系统中,有串联罐和并联罐两种型式。串联罐主要用于大型高炉,并联罐多用于中、小高炉。并联罐喷煤系统中,喷吹罐通过一、两根管道将煤粉输送到高炉炉前,然后经炉前分配器再分配到高炉各个风口。多年来一直沿用瓶式分配器,此分配器为一空腔容器,下部与输煤总管相连,空腔上部沿水平方向布置几根较细的煤粉输出管,管道数目根据风口多少而定。这种分配器由于结构不合理,缺点较多;阻力损失大、输煤能力小、尤其是各支管分配误差大。输煤过程中各支管时堵时通,对煤粉在风口前充分燃烧非常不利,在喷煤量大时更为严重,成为提高喷煤量和改进煤粉利用率的障碍。
In blast furnace coal injection system, there are two types of tandem tank and parallel tank. Tandem tank is mainly used for large blast furnace, parallel tank and more for medium and small blast furnace. Parallel tank coal injection system, the injection tank through one or two pipes will be transported to the blast furnace pulverized coal, and then by the furnace before the redistribution to the blast furnace outlet. Over the years has been the use of bottle distributor, the distributor for a cavity container, the lower part connected with the coal conveying manifold, the upper part of the cavity along the horizontal direction of the layout of several smaller coal output pipe, the number of pipes depending on the number of tuyere. Due to the irrational structure of the distributor, there are a lot of disadvantages; the resistance loss is large and the capacity for coal transportation is small; in particular, the distribution error of each branch is large. During the process of coal transportation, the branch pipe is blocked and it is very unfavorable for the coal to fully burn in front of the tuyere and more serious when the amount of coal injected is large, thus becoming an obstacle to increasing the amount of coal injected and improving the coal utilization efficiency.