Method and system for simulating feedback control of TRT (Top Gas Pressure Recovery Turbine) blast furnace during top pressure controlled distribution

Abstract

The invention discloses a method for simulating feedback control of a TRT blast furnace during top pressure controlled distribution. The method comprises the following steps of: (1) respectively establishing various component simulation modules for various components of a TRT system, editing and setting parameters and interfaces for the various component simulation modules; (2) connecting the component simulation modules through the interfaces of the various component simulation modules according to the actual TRT system, and regulating each parameter to enable the system to achieve the stable state; (3) analyzing characteristics and control method of the actual TRT system during distribution, increasing a distribution interference module and a PID (Process identifier) feedback control module, wherein the distribution interference module is used for simulating the influence to the top pressure of the blast furnace during distribution, and the PID feedback control module is used for simulating control to a static vane; (4) setting simulation parameters of the system and carrying out simulation calculation. The simulation system is debugged by establishing the simulation system for the blast furnace during distribution, a more rational control scheme is determined, and the influences of direct online test for different control schemes to the normal operation of the blast furnace are avoided.

Description

technical field [0001] The invention relates to the field of TRT blast furnace top pressure control in the metallurgical industry. Background technique [0002] TRT is the abbreviation of Top Gas Pressure Recovery Turbine unit, which is called a blast furnace gas residual pressure power generation device. It uses the high temperature and high pressure gas generated by the blast furnace to drive the turbine, and then drive the generator to generate electricity. According to statistics, TRT can recover 30%-40% of the energy in blast furnace gas. Compared with the traditional pressure reducing valve group of the blast furnace, it can better stabilize the top pressure of the blast furnace and greatly reduce the noise pollution caused by the pressure reducing valve group. TRT can not only bring huge economic benefits to iron and steel enterprises, but also a benchmark project for energy saving and emission reduction. A typical TRT process flow is attached figure 1 shown. [0...

AI Technical Summary

Problems solved by technology

[0003] In the process of TRT controlling the top pressure of the blast furnace, under normal circumstances, only the conventional PID is required to stabilize the top pressure of the blast furnace, but the blast furnace will cause a strong disturbance to the top pressure of the blast furnace when the blast furnace is placed. The top pressure fluctuation cannot be maintained in a small range, which will inevitably have a certain impact on the normal production of the blast furnace, but there is currently no good control solution to solve the impact of the cloth distribution process on the top pressure, and due to the continuous production of the blast furnace If engineers test different control schemes online, it will definitely have a great impact on the normal operation of the blast furnace, and even cause various dangerous consequences

Images