Method and system for feedback control simulation in heat treated (TRT) blast furnace top pressure control stamping process

Abstract

The invention provides a method for feedback control simulation in a heat treated (TRT) blast furnace top pressure control stamping process. The method includes steps of 1) component simulation modules are built respectively aiming at each component of a TRT system, and parameters and ports of the component simulation modules are compiled and designed; 2) the component simulation modules are connected through the ports of the component simulation modules according to the actual TRT system, and parameters of the modules are adjusted to enable the system to arrive at a steady state; and 3) characteristics and a control method of the stamping process of the actual TRT system are analyzed, a stamping interference module and a proportion integration differentiation (PID) feedback control module are added, the stamping interference module is used for influencing blast furnace top pressure in a simulation stamping process, and the PID feedback control module is used for controlling static blades through a simulation actual programmable logic controller (PLC); and 4) system simulation parameters are arranged, and simulation operation is performed. The system and the method for feedback simulation are built in the blast furnace stamping process, determine a reasonable control scheme, and avoid influence on normal production of a blast furnace because of direct on-line testing of different control schemes.

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...

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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 during stamping. 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 stamping 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

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