国内首创的PEC复合脱碳溶剂在唐山市朝阳化工总厂研制成功,于1999年底通过中国氮肥工业协会组织的专家评议。脱碳是氮肥生产中重要的工艺技术之一,碳酸丙烯酯则是脱碳的常用溶剂。因其具有净化程度高、能耗低等特点,在国内外小化肥生产中得到了广泛应用。其缺点是成本高、易损耗。 The pioneering PEC composite decarburization solvent has been successfully developed in Tangshan Chaoyang Chemical Plant. At the end of 1999, it was appraised by experts organized by China Nitrogen Fertilizer Industry Association. Decarbonization is one of the important process technologies in nitrogenous fertilizer production. Propylene carbonate is a common solvent for decarburization. Because of its high degree of purification, low energy consumption, the production of small fertilizers at home and abroad have been widely used. The disadvantage is the high cost, easy to wear and tear.