The favorable conditions are analyzed for the use of the Type A301 catalyst in large scale ammonia plants. It is hoped that it will be promoted and used in large ammonia plants.
分析了A301型催化剂在大型合成氨厂应用的有利条件，希望能在大型合成氨厂推广应用。
Wastewater treatment plants concentrate large quantities of phosphorus and ammonia in their sludge-handling streams.
一般在污水处理厂的污泥中会富集大量的磷和氨。
This article describes the recent development in the transformation of convertors in large-sized ammonia plants abroad and various types of transformed con...
本文介绍了近年来国外大型氨厂合成塔改造的新进展，概述了改造合成塔的各种类型。
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