The Design And Debugging Of The FGD Control System

According to statistics, at present, China’s annual emissions of sulfur dioxide and ranks first in the world, sulfur dioxide emissions in2013has reached20440000tons,of which more than50%of sulfur dioxide from coal-fired power plants is the national.Thus, thermal power plant desulfurization is the main way to control sulfur dioxide emissions in our country at present. By the end of2013, the national power generation installed capacity reached1247000000kW, of which thermal power installed capacity is860000000kW, accounting for69%, and the generating capacity of thermal power units is3.9trillion kW.h, accounts for the electricity generating capacity of80%, as Protect environment, reduce acid rain pollution due to caused by sulfur dioxide, fire control power plant emissions of sulfur dioxide reach the national standard, will the flue gas desulfurization device and its control system in power plantplays an important role.This article mainly aims at the control system of flue gas desulfurization (DCS)distributed power plant design and application were studied. Taking Shanghaipetrochemical#5,6furnace desulfurization renovation project as a starting point, the first describes a wet FGD (FGD) process; secondly introduces FGD design principles and rules, detailed introduces the data acquisition system (DAS), analog controlsystem (MCS) and sequence control system (SCS) the basic principle and designprinciple.Through the full understanding of the principle of the FGD-DCS system, carries on the design to the Shanghai petrochemical#5,6furnace desulfurization control system, through the design of the overall framework of Shanghai a self bearingcontrol instrument limited company of Harmonas-DEO and the system structure diagram, each function module of the logic flow chart, main function and effect of the system implementation is also made a brief discussion on the. Finally, the debugging and management method of desulfurization control system are described andsummarized the experience in the design of desulfurization control system, to optimize the DCS control system based on feedback control level of actual requirements and problems, improving the utilization rate of the desulfurization system, not only to ensure the stability and economy of the FGD system, but also make it to meet the requirements of environmental protection.