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The specific functions of the hot blast stove and the blast furnace duty room control subsystem are as follows: (1) automatic hot-furnace system automatic furnace change-automatic furnace change operation; initial application of four hot blast stoves (selection and sequencing), according to set time or temperature Automatic furnace change, automatic furnace change reveal and response, automatic furnace change in advance and delay. (2) Realizing the semi-automatic furnace change of the hot blast stove system - single furnace changing operation; forcing the single-seat hot blast stove to be burned by the air supply, forcing the single-seat hot blast stove to be transferred from the combustion. (3) Realizing the prohibition and cancellation of the output of the PLC control system; Henan Metallurgy (4) Realizing the collection, processing and monitoring of the temperature, pressure, flow and other data of the hot blast stove; (5) Completing the error check of the setting operation of the PLC control system of the hot blast stove; (6) Completing the monitoring of the operating status of important electrical equipment such as inverters and oil pumps; (7) Real-time monitoring of the process of changing the furnace, such as air supply and combustion, by means of the upper computer; (8) Realizing the blast furnace body through the upper computer Real-time collection, processing, recording and monitoring of parameter data such as temperature, pressure and flow. (9) Through the upper computer, the important equipment status and production process parameters of other subsystems can be monitored online in real time.
Blast Furnace Gas Dry Dust Removal Automatic Control Subsystem This subsystem counts a PLC system to complete the blast furnace gas dry dust removal production process control and data acquisition function. The ConcPet tool software is used to develop the design control program with modular programming method. Design a monitoring operation station to complete the monitoring of the blast furnace gas dry dust removal production process. The production process control of this subsystem mainly includes two parts: bag dust removal, ash discharge and ash conveying system.
The dust removal part of the bag is designed, the PLC control program is designed, and the normal filtration and back-blowing ash process control of ten dust-removing boxes are completed; and the energy storage back-blowing, pressure-pressure back-blowing, and release of the net gas are realized through the setting of the upper machine. Three types of back-blowing selection control are blown; there are three conditions for back-blowing: timing back-blowing, constant-pressure back-blowing, manual back-blowing, and setting operation by the upper machine. The ash discharge and the ash conveying part are designed, and the PLC control program is designed to complete the following process control: after the ten boxes are backflushed one by one, the ball valve and the feeder under each box ash silo are unloaded and discharged to each box. The middle ash silo is then discharged from the ball valve of the middle ash silo, the feeder to the buried scraper, through the 1 and 2 buried scraper, and the bucket hoist to the high ash silo.
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