1）            防止噴入的氨氣過多，對(dui)客戶在經(jing)濟方面造成浪費

2）            防止超標排放氨氣造成二次污染

3）            由于(yu)過(guo)量(liang)(liang)的氨在濕法(fa)脫(tuo)(tuo)硫的系(xi)(xi)統(tong)(tong)中(zhong)會產生大(da)(da)量(liang)(liang)的氨鹽，因此在脫(tuo)(tuo)硫系(xi)(xi)統(tong)(tong)中(zhong)產生大(da)(da)量(liang)(liang)的結垢現象，嚴重影(ying)響脫(tuo)(tuo)硫系(xi)(xi)統(tong)(tong)的正常運行(xing)。同(tong)時過(guo)量(liang)(liang)的氨也會對脫(tuo)(tuo)硫系(xi)(xi)統(tong)(tong)中(zhong)的管道(dao)、泵、閥、預(yu)熱器等(deng)都(dou)帶來嚴重腐蝕的后(hou)果(guo)，這也是氨法(fa)脫(tuo)(tuo)硫難(nan)以(yi)克服的難(nan)題(ti)之一。所以(yi)氨逃逸的檢(jian)測不僅(jin)對脫(tuo)(tuo)硝系(xi)(xi)統(tong)(tong)，而(er)且(qie)對下級(ji)的濕法(fa)脫(tuo)(tuo)硫系(xi)(xi)統(tong)(tong)都(dou)有重要作(zuo)用。