Design of Blast Furnace Fuel Blowing System
The blast furnace fuel blowing system is a multi-input, multi-input and multi-output system. It plays a key role in the production process. Its design process is very complicated, involving many aspects. In order to satisfy the requirement of high efficiency and energy saving, advanced control approach was adopted in recent years. The paper briefly introduces the design of the blast furnace fuel blowing system and its development.
The control system of the blast furnace fuel blowing system is composed of three parts: automation system, transmission system and auxiliary system. The automation system is responsible for the operation monitoring and control of the fuel injection system, receiving and processing the data of the gas pressure, gas flow rate and furnace temperature, and issuing the corresponding control instruction according to the process requirements. The transmission system is mainly composed of electrically driven circuits and pneumatic components, the role is to provide the power and execute the control instruction issued by the automation system control. The auxiliary system is used to monitor the working state of the whole fuel injection system, providing information feedback to the automation system to make proper adjustments according to the changing process conditions.
In the traditional control scheme, the control of the blast furnace fuel blowing system was based on the open loop control approach. The control parameters were adjusted manually based on the feedback information of the furnace pressure, furnace temperature and maximum gas flow rate. This mode of control was not only inefficient but also slow.
With the development of control technology, more advanced control approaches, such as fuzzy and PID control, have been adopted for the blast furnace fuel blowing system. Fuzzy control is a kind of non-linear control method which makes the system more adaptive and robust. This technology can adjust the control parameters in real time and make necessary changes to regulate the operation of the system according to the changing process parameters. On the other hand, PID control based on the feedback information enables the system to quickly and accurately respond to process changes and attain optimal control performance.
The blast furnace fuel blowing system can also be improved by introducing material sensors, flow sensors and other devices to the system. These devices can help the system to obtain more accurate process information and provide more precise control instructions. Additionally, the introduction of advanced control technology to the system can make it more adaptive and robust to environmental changes.
In summary, the design of the blast furnace fuel blowing system is complicated and its development is rapid. Advanced control schemes are adopted in recent years to make it more efficient and robust. By introducing more precise measurements, advanced controllers and technologies, further improvement of the system can be expected.
