目前，我国的大中小型氮肥厂中，除年产３００ｋｔ合成氨的大型氮肥厂外，绝大多数是使用活塞式氮氢气压缩机来生产合成氨。因此，活塞式压缩机在我国氮肥工业中一直是量大面广的关键设备，消耗的电能占整个合成氨生产的７５％以上，故研究和准确测算出其效率对提高氮肥工业用? At present, China’s medium, small and medium sized nitrogenous fertilizer plant, in addition to an annual output of 300kt ammonia nitrogen plant, the vast majority of the use of piston-type nitrogen-hydrogen compressor to produce ammonia. Therefore, the piston compressor in China’s nitrogen fertilizer industry has always been the key to a wide range of equipment, the consumption of electricity accounted for more than 75% of the total production of ammonia, so the study and accurately calculate the efficiency of nitrogen fertilizer to improve industrial use?