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从1977年在河南荥阳县化肥厂第一次试用球形氨合成催化剂以来,山东平度化肥厂、浙江桐乡化肥厂等厂,特别是四川化工厂在直径800毫米合成塔试用,证明球形氨合成催化剂比不规则形状的氨合成催化剂确实具有阻力小,氨净值高等特点。因而既能提高合成氨产量,又能降低电耗。由电镜观察和电子吸收图象的检验结果表明:球形氨合成摧化剂比不规则的氨合成催化剂晶粒细小,助剂分布均匀,特别是钾的分布更为突出。以往认为钾的分布比较集中,富集在某些区域,其他地方很少,而球形氨合成催化剂钾的分布比较均匀。由此可见,上述球形氨合成催化剂不仅是外形的改善,而内部结构也有不同,所以对其结构及物理化学性能应给予比较系统的研究。本文是关于球形氨合成催化剂比表面的测
Since the trial of spherical ammonia synthesis catalyst for the first time in Shenyang Feiyang Fertilizer Plant in 1977, Shandong Pingdu Fertilizer Plant, Zhejiang Tongxiang Fertilizer Plant and other plants, especially Sichuan Chemical Plant, have experimented on a 800 mm diameter synthesis tower to prove that spherical ammonia synthesis catalyst Ammonia than the irregular shape of the catalyst does have a small resistance, high net ammonia value. As a result, it can not only increase the output of synthetic ammonia but also reduce the power consumption. The results of electron microscopy and electron absorption images show that the spherical ammonia synthesis catalyst has a smaller grain size, more uniform distribution of additives, and more particular the distribution of potassium than the irregular ammonia synthesis catalyst. In the past that the distribution of potassium concentrate, enrichment in some areas, few other places, and spherical ammonia synthesis catalyst potassium distribution more evenly. Thus, the spherical ammonia synthesis catalyst is not only the improvement of appearance, but also the internal structure is different, so its structure and physical and chemical properties should be given more systematic study. This article is about spherical ammonia synthesis catalyst specific surface measurement