一、干法除尘的必要性和迫切性高炉煤气的除尘工艺,过去大都以水进行清洗,这种湿法工艺进展到五十年代中期,已经相当成熟,净高炉煤气的含灰量很低,操作较简便,已能较满意地适应钢铁厂生产要求。所以近三十年来湿法工艺并没有什么重大进展。但是只要略加探讨,就发现存在着不少严重问题,必须及早给予解决。 First, the necessity and urgency of dry dedusting Blast furnace gas dedusting process, mostly in the past to clean water, this wet process progress to the mid-fifties, has been quite mature, the net blast furnace gas ash content is very low, The operation is relatively simple, has been able to more satisfactorily adapt to the steel production requirements. So wet process has not made any significant progress in the past three decades. However, as long as some discussions are made, many serious problems have been found and must be solved as early as possible.