Abstract

900m ³ blast furnace automation control systems include: furnace instrument control, electronically controlled hot gas, the feed trough under the top three-part electronic control, early in 2005 the comprehensive upgrading of the original DCS to PLC.

1. System Requirements:

1. Operating system for WINDOWS2000 + SP4, application platform for the United States ROCKWELL's 3 sets of CONTROLLOGIX control software.
2. Between the three sub-systems using 100MB / S Ethernet communications between PC and PLC communication protocol in three: DEVICENET, CONTROLNET, ETHERNET.
3. Has strong ability of anti-electromagnetic interference, scalability, good performance, sturdiness and durability, easy maintenance.

2. System features:

1. Blast furnace, hot stove body pressure, differential pressure, temperature, flow, level, weight, valve-bit data acquisition and processing of real-time, historical data processing.
2. Top pressure, air temperature, the pressure of gas-tight box, expansion tank pressure, top water, gas flow, combustion air flow parameters such as the automatic adjustment and control.
3. Stove combustion, air supply, stop the operation of the production process.
4. Trough under the sinter, coke, ore and other miscellaneous belt weighing bucket and material control of the next.
5. Top up and down the closed valve, are pressure valves, emission valves, material flow control valve, α angle, β angle logic control.
6. Data Report, alarm generation and printing records.

3. Solution:

1. Blast furnace hot-blast stove 3 Ontology IPC; Stove Electrical Control IPC 2; tank 2 under the IPC; top IPC 2; foreman IPC Room 1.
2. PLC 1 blast furnace hot-blast stove body kit; Stove Electrical Control PLC 1 sets; trough under the top 1 set.
3. PLC into the above-mentioned three sets of independent subsystems, through the 100MB switch and the formation of category 5 twisted-pair network, mutual communication, data sharing.
4. Each IPC to install a 100MB Ethernet card, in the same respective网段内set the same IP address and subnet mask. RJ45 twisted-pair access through their respective switches, to form their own sub-systems, network topology for the star. Three way switch to cascade through RJ45 twisted-pair networking communications.
5. Because of the 10 machines operating system, system software, the basic configuration of the demand, so a machine can do a complete installation and testing accuracy, the software through the GHOST image file, the rest of the installation cloning machine, and then fine-tune large quantities can be quickly completed and tedious task installed.

4. System Schematic:

5. System technology sketch:

6. System and customer evaluation of the operation:

1. Advantech Industrial Computer running stability, handling large quantities of data quickly and accurately.
2. Machine before and after the USB interface design for regular backup procedures very easy.
3. The design of the machine before and after the fan is clear that a reduction of internal dust.
4. Slot machines, and set aside more than interfaces, scalable performance.
5. Good performance for the blast furnace stable and efficient production automation provides a good protection.
6. Comprehensive technical support and after-sales service users to ensure the greatest ease of use.