The Design of Coal Gas Purification System of Ore Smelting Electric Arc Furnace Base on Micro-Differential Pressure Control

Abstract:

In the paper, the generating process of the furnace gas in ferroalloy smelting process is expounded, taking the gas purification recovery system project of the four ore smelting electric arc furnaces in Sinosteel Corporation Jilin Ferroalloys Co., Ltd as background. The process of the gas purification system is analysed, base on the pipe network structure and the process control requirements in the gas purification recovery system by the current method of the washing tower, venturi tube and the dehydrating tower. The main design of the upper and lower computer control is adopted. The collection of multi-class parameters and the signal conversion mode is established. The coal gas monitoring system with the double closed-loop control of micro-differential pressure of furnace mouth and the reflux valve opening degree is found base on PI control method. It can solve interactive allopatric communication problem between the control room and the pump room. It also can achieve gas purification system integrated automation management with many ore smelting electric arc furnaces. The system runs stably by the assessment of the actual operation. It also meets the actual needs of production.

• Periodical: Applied Mechanics and Materials (Volumes 380-384)
• Pages: 668-671
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.380-384.668
• Online since: August 2013
• Authors: Xiu He Lu, Bin Zhang
• Keywords: Allopatric Communication, Micro-Differential Pressure, Ore Smelting Electric Arc Furnace, Venturi Tube

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