Sintering Flue Gas Desulphurization Control System Design

Iron and steel industry in the high sintering flue gas emissions,sintering flue gas sulfur compounds lead to the formation of acid rain,while increasing the concentration of PM2.5 in the air, and serious environmental pollution, hazards to human health, so sintering flue gas desulfurization emissions become the focus of the steel industry.Taking control of Tianjin Iron Steel Co., Ltd. 108m2 sinter flue gas desulfurization system transformation as the background, by sintering machine power supply system and the actual parameters of sintering flue gas analysis, combined with common desulphurization process scope to the basic principles and desulphurization process selection, determine the use of advanced and reliable rotating spray drying flue gas desulfurization technology(SDA). Wherein the control system design includes:(1) Establish desulfurization system automation and control model, the regional division of the desulfurization system to process equipment for the carrier gas desulfurization system, desulphurization and dust removal system for process design.(2) Desulfurization system electrical design, equipment supply and distribution of the regional design; system piping cable laying equipment and lighting, lightning protection, grounding system design.(3) Desulfurization system control design, PLC control, and by means of intelligent instrumentation, completed in the control room of the normal start desulfurization system equipment, stop operation; equipment status online monitoring, queries and fault alarm; each region interlock control system and process conditions parameter optimization.This set of desulphurization and dust removal system put into use to meet the requirements of the production process, reliable performance, stable operation, to achieve the desired desulfurization emissions target.