Fault analysis and optimization of the control system of the steam-driven fan unit in an 800 kt/a sulphuric acid plant
The operating status of the steam-driven fan unit in the phase I 800 kt/a sulphuric acid plant of Yunnan Tian'an Chemical Co.,Ltd.is introduced,the faults and existing problems in the unit control system are analyzed.Taking into account factors such as renovation cost,renovation time and system performance,the software and hardware of the unit control system have been optimized and renovated from the aspects of control system architecture,on-site measurement and control instruments and strategies,and anti-surge control system.After optimization and renovation of the control system of the steam-driven fan unit,the sulphuric acid plant has achieved long-term stable operation,solving the problems of frequent tripping and high maintenance frequency caused by faults in the control system of the unit,which restrict the stable operation of the sulphuric acid plant and downstream devices.The economic benefits are obvious.
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