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武钢2号高炉即将大修,为促使脱湿鼓风实现,我们拟采用在鼓风机出口去热风炉的管道上,安装脱湿装置。设想方案如下: 1.机后直接接触冷却脱湿原理。脱湿原理见图1。风机出口的压缩空气状态点为A,由A先到B点,即增湿饱和,然后再冷却到C点,达到脱湿目的。此法的缺点是鼓风机出口侧的空气温度高于吸入侧,对降温是不利的。但对于一定含湿量,压缩空气的露点比常压空气高得多,空气压力愈高,这种差别就愈大。湿度与压力成反比关系,这就弥补了空气经过鼓风机后而使温度升高的不足,对于提高热效率是有利的。在同样脱湿指标下,它比在鼓风机吸入侧进行脱湿显得设备简单,且投资省、占地小、运行费用低。
WISCO No.2 blast furnace is about to be overhaul, in order to promote dehumidification blasting, we intend to use the outlet of the blower to the hot stove pipe, install the dehumidification device. Assumptions program is as follows: 1 machine direct contact with the cooling desorption principle. Dehumidification principle shown in Figure 1. Fan exit of the compressed air state point A, from A first to point B, that humidification saturation, and then cooled to C, to achieve the purpose of dehumidification. The disadvantage of this method is that the air temperature at the outlet of the blower is higher than the suction side, which is unfavorable to cooling. However, for a certain moisture content, the dew point of compressed air is much higher than atmospheric air, the higher the air pressure, the greater this difference. Humidity and pressure is inversely proportional, which makes up for the lack of air after the blower to make the temperature increase, to improve the thermal efficiency is beneficial. Under the same dehumidification index, it is simpler than the dehumidification on the suction side of the blower, and the investment is small, the occupation is small, and the operation cost is low.