介绍大型氨厂普里森氢回收装置投运前后存在的问题及对策；
The Paper bears on the problems appearing before and after the Prism hydrogen recovery set of large ammonia plant was put into operation and deals with the solving measures.
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。
This article describes the recent development in the transformation of convertors in large-sized ammonia plants abroad and various types of transformed con...
摘要介绍了大型氨厂锅炉给水泵转子抱死事故的原因，对其进行分析，并对修复过程中采取的方法及技术措施进行了总结。
This article introduces the cause and analyses the accident of the rotor holding in death of the boiler feedwater pump summing-up the way and technique measure in the process of repairing.
该模型是以BP网络为基础的多层网络，用实际操作数据对该模型进行了训练，获得了较好的过程模拟效果，该模型可用于大型氨厂转化系统操作分析。
The model is trained with the operation data of a large scale ammonia plant. The results calculated by this model agree well with industrial operation data.
本文介绍了利用氨法处理杂质成分复杂的某大型冶炼厂炼铅系统烟化炉氧化锌烟灰制备高等级氧化锌的工艺。
The paper introduces the ammonia process of producing high-grade zinc oxide from impurities zinc oxide dust which produced by the smoked stoves in a large internal smelter.
介绍了大型合成氨厂低变炉更换催化剂的过程；论述了催化剂的选型要求和装填方法；阐明了催化剂还原过程中从还原前升温到还原初期、主期及末期的操作步骤和要求。
The process to replace the catalyst of shifting furnace was introduced for large-sized ammonia synthesis plant; the requirements of type selection and filling method for catalyst were discussed.
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。
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.
采用地面浓度反推法，计算出氨的无组织排放量，从而确定出可行的大型氮肥厂卫生防护距离。
The discharge of uncontrollable ammonia was determined by the antiinferenee of ground consistency. A practical and feasible health protection zone was determined.
采用地面浓度反推法，计算出氨的无组织排放量，从而确定出可行的大型氮肥厂卫生防护距离。
The discharge of uncontrollable ammonia was determined by the antiinference of ground consistency. A practical and feasible health protection zone was determined.
介绍大型合成氨厂在线实时操作优化控制系统。
The on-line operating optimization and control systems used in a synthetic ammonia process are presented in this paper.
介绍了大型合成氨厂低变炉更换催化剂的过程； 论述了催化剂的选型要求和装填方法；
The process to replace the catalyst of shifting furnace was introduced for large-sized ammonia synthesis plant;
介绍了大型合成氨厂低变炉更换催化剂的过程； 论述了催化剂的选型要求和装填方法；
The process to replace the catalyst of shifting furnace was introduced for large-sized ammonia synthesis plant;
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