严重污染一般碳酸氢铵的包装,都是采用上悬式环形排气罩来排除卸料口瞬间散发的氨气。在广东兴宁县氮肥厂包装车间实测时,发现工人操作岗位(右上图)的氨气浓度高达418.7毫克/米~3,超过国家标准12.9倍。虽然安装了防尘防毒设备,但是,这样高浓度的刺激性气 Serious pollution General ammonium bicarbonate packaging, are used on the hanging ring exhaust hood to remove the moment of discharge of ammonia. Found in Xingning County, Guangdong nitrogenous fertilizer plant packaging workshop, found that workers operating positions (upper right) ammonia concentration as high as 418.7 mg / m ~ 3, 12.9 times the national standard. Although the installation of dustproof anti-virus equipment, however, such a high concentration of irritating gas