The article introduces the status about research & development of synthetic ammonia production process in 1990s and its commercial applications abroad,with emphasis on the recent production processes developed by Kellogg,Linde and ICI companies.

• 介绍了国外90年代合成氨生产技术的研究开发和工业化应用进展情况，重点讲述了Kellogg公司，Linde公司和ICI等公司开发的新工艺。