由于世界能源消耗逐年增加，作為一次能源的煤摸底的燃燒利用，釋放出大量的二氧化硫以及由其形成的區(qū)域性酸雨，對(duì)環(huán)境已造成了嚴(yán)重的污染，它破壞著生態(tài)平衡，引起森林大面積積毀滅、土壤湖泊酸化、建筑物腐蝕等。 
因此，控制和減少二氧化硫的排放量是一個(gè)十分重要的任務(wù)。在眾多的脫硫技術(shù)中，利用噴霧干燥法脫去煙道氣中的二氧化硫是一個(gè)越來(lái)越受重視的技術(shù)。這項(xiàng)技術(shù)是在20世紀(jì)70年代開始進(jìn)行研究的，20世紀(jì)70年代末已投入商業(yè)運(yùn)行。它投資少、操作簡(jiǎn)單、除硫效率高、沒(méi)有二次污染，與煙道氣脫硫中大量使用的濕法相比，噴霧干燥法脫硫形成的粉末產(chǎn)品有更大的選擇性和開發(fā)價(jià)值。
噴霧干燥設(shè)備技術(shù)能否廣泛應(yīng)用的一個(gè)重要前提是能否解決干燥后的大量粉末硫酸鹽的合理開發(fā)利用問(wèn)題。可以再生作為吸收劑，部分干料可循環(huán)使用，作為大地的添充物，轉(zhuǎn)為為膏劑用于水泥的緩凝劑，制成顆粒狀的人造砂石，作為建筑材料的填充劑代替常用的混凝土和瀝青等。
As the world energy consumption increased year by year, as a primary energy source of coal combustion by thoroughly releasing large amounts of sulfur dioxide, and the formation of regional acid rain on the environment has caused serious pollution, it damaged the ecological balance caused by forest destruction, soil acidification, Lake area building corrosion.
Therefore, the control and reduction of sulfur dioxide emissions is a very important task. In many desulfurization technologies, the use of spray drying method to remove sulfur dioxide in flue gas is a more and more important technology. The technology started in 1970s and was put into commercial operation in late 1970s. It is less investment, simple operation, high efficiency, no sulfur removal two pollution, compared with the use of a large number of wet flue gas desulfurization process, powder spray dry desulfurization formed selectively and develop greater value.
An important prerequisite for the wide application of spray drying equipment technology is whether it can solve the problem of rational exploitation and utilization of large amount of powder sulfate after drying. Can be recycled as absorbent, part of dry material can be recycled and used as fillers to the earth, as retarder for cement paste, made of granular artificial sand, used as a filler in building materials instead of the common concrete and asphalt.
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