A new online exhaust gas monitoring system in hydrochloric acid regeneration of cold rolling mills

Tuo, Long; Zheng, Xiang; Chen, Xiong

A new online exhaust gas monitoring system in hydrochloric acid regeneration of cold rolling mills

2017

Tuo, Long | Zheng, Xiang | Chen, Xiong

Measuring the content of hydrogen chloride (HCl) in exhaust gas used to take time and energy. In this paper, we introduce a new online monitoring system which can output real-time data to the monitoring center. The system samples and cools exhaust gas, and after a series of processing, it will be analyzed by a specific instrument. The core part of this system is remote terminal unit (RTU) which is designed on Cortex-A8 embedded architecture. RTU runs a scaled-down version of Linux which is a good choice of OS for embedded applications. It controls the whole processes, does data acquisition and data analysis, and communicates with monitoring center through Ethernet. In addition, through a software developed for windows, the monitoring process can be remotely controlled. The new system is quite beneficial for steel industry to do environment monitoring.

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