Feedforward feedback simulation method for TRT (Top Gas Pressure Recovery Turbine unit) blast furnace top pressure control stamping process and system therefor

A technology of feed-forward feedback and simulation method, applied in the direction of blast furnace, blast furnace details, furnace, etc., can solve problems such as disturbance, no good control solution solution, danger, etc.

Inactive Publication Date: 2012-09-19
WISDRI ENG & RES INC LTD
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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 c...

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  • Feedforward feedback simulation method for TRT (Top Gas Pressure Recovery Turbine unit) blast furnace top pressure control stamping process and system therefor
  • Feedforward feedback simulation method for TRT (Top Gas Pressure Recovery Turbine unit) blast furnace top pressure control stamping process and system therefor
  • Feedforward feedback simulation method for TRT (Top Gas Pressure Recovery Turbine unit) blast furnace top pressure control stamping process and system therefor

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Embodiment Construction

[0064] figure 2 It is the top pressure control model diagram of TRT blast furnace, that is, the topological structure of the entire TRT simplified model. Boundary A produces a stable gas flow, which enters the blast furnace through pipe A, and the gas flows out of the furnace top through the material layer in the blast furnace, and passes through a long pipe B flows into the stator vane in the turbine, and finally flows out to the boundary B; there is a branch pipeline connected to the stamping tank in front of the stator vane, and a stamping valve is installed on the pipeline between the vane and the stamping tank, because the stamping valve is opened and closed. The blast furnace gas flow rate has a great influence, so the furnace top pressure will fluctuate with the opening and closing of the ram valve and the time when the ram valve is opened. This system and method is to simulate the impact of the switch of the stamping valve on the top pressure of the blast furnace. By ...

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Abstract

The invention provides a feedforward feedback simulation method for a TRT blast furnace top pressure control stamping process. Through establishing a feedforward feedback simulation system and utilizing a simulation method for the blast furnace stamping process, the rating curve of a stationary guide blade is utilized in advance for feedforward control of the opening degree of the stationary guide blade during stamping, the set value of the top pressure and the feedback value are compared, a controlled variable is output for feedback control of the stationary guide blade, and commissioning in the simulation system can ensure a more reasonable control scheme, so that the influence of direct online testing of different control schemes on the normal operation of the blast furnace can be 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...

Claims

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Application Information

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IPC IPC(8): C21B5/00C21B5/06
Inventor 万磊李清忠叶理德
Owner WISDRI ENG & RES INC LTD
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