The process of catalyst spraying dryer system are simply introduced in the paper, the comparison results, control level and effects are described as well.

简要述说了催化剂喷雾干燥系统的工艺流程，装置改造前后对比情况，自动控制水平，以及改造后的效果。

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A review has been made on the functions of rolling automation system with the process control level and the basic automation devices described in detail.

首先对轧制过程自动化系统的功能进行了评述，较为详细地说明了过程控制级和基础自动化。

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The main functions, hardware component, network configuration and software design idea of process control level, basic automation level and field execution level for this control system are described.

本文介绍了该系统过程控制级、基础自动化级和现场执行级的主要功能、硬件组成、网络结构及软件设计思想。

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