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A method and device for controlling blast furnace top pressure

A blast furnace and top pressure technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as large top pressure fluctuations, top pressure fluctuations, and impact on blast furnace production.

Active Publication Date: 2019-10-29
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing method of using TRT to control blast furnace top pressure generally adopts traditional PID control or cascaded PID control, that is, relying on experience, the set value of blast furnace top pressure is used as the control object, and the measured value of blast furnace top pressure is used as a negative feedback signal, and then The deviation between the set value and the measured value is used as a control reference to control the top pressure of the blast furnace. However, in practical applications, the top pressure of the blast furnace is affected by many factors. The existing PID control method has large fluctuations in the top pressure, which affects the production of the blast furnace.
[0004] It can be seen that the method of the prior art has the technical problem that the top pressure fluctuates greatly and affects the production of the blast furnace

Method used

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  • A method and device for controlling blast furnace top pressure
  • A method and device for controlling blast furnace top pressure
  • A method and device for controlling blast furnace top pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] This example provides a method for controlling the blast furnace top pressure, please refer to figure 1 , the method includes:

[0067] Step S101: receiving a signal of blast furnace blanking, the signal of blast furnace blanking includes a blanking start signal and a blanking end signal;

[0068] Step S102: Obtain the first time delay and first amplitude of blast furnace top pressure change according to the blanking start signal and based on historical monitoring data;

[0069] Step S103: Obtain a second delay and a second amplitude of the blast furnace top pressure change according to the blanking end signal and based on historical monitoring data;

[0070] Step S104: Obtain a first feedforward signal according to the first delay and the first amplitude, and obtain a second feedforward signal according to the second delay and the second amplitude;

[0071] Step S105: Based on the first feedforward signal, set the first preset angle adjustment value of the TRT adjust...

Embodiment 2

[0099] This embodiment provides a device for controlling the blast furnace top pressure, please refer to image 3 , the device consists of:

[0100] The receiving module 201 is configured to receive a signal of blast furnace blanking, and the signal of blast furnace blanking includes a blanking start signal and a blanking end signal;

[0101] The first obtaining module 202 is configured to obtain the first delay and the first amplitude of the top pressure change of the blast furnace according to the material cutting start signal and based on historical monitoring data;

[0102] The second obtaining module 203 is configured to obtain a second delay and a second amplitude of the blast furnace top pressure change according to the blanking end signal and based on historical monitoring data;

[0103] A third obtaining module 204, configured to obtain a first feedforward signal according to the first delay and the first amplitude, and obtain a second feedforward signal according to...

Embodiment 3

[0119] See Figure 4 , the embodiment of the present invention provides a computer-readable storage medium 300, on which a computer program 311 is stored, and when the program is executed by a processor, the following steps are implemented:

[0120] receiving a signal for blast furnace blanking, the signal for blast furnace blanking includes a blanking start signal and a blanking end signal;

[0121] Obtaining the first time delay and the first amplitude of the top pressure change of the blast furnace according to the blanking start signal and based on historical monitoring data;

[0122] Obtaining a second delay and a second amplitude of the top pressure change of the blast furnace according to the blanking end signal and based on historical monitoring data;

[0123] obtaining a first feedforward signal according to the first delay and the first amplitude, and obtaining a second feedforward signal according to the second delay and the second amplitude;

[0124] Based on the...

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PUM

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Abstract

The invention discloses a method and a device for controlling a blast furnace top pressure. The method comprises the following steps: receiving a blast furnace blanking signal, wherein the blast furnace blanking signal contains a blanking starting signal and a blanking ending signal; acquiring a first time delay and a first amplitude of the blade furnace top pressure change according to the blanking starting signal and based on historical monitoring data; acquiring a second time delay and a second amplitude of the blade furnace top pressure change according to the blanking ending signal and based on the historical monitoring data; acquiring a first feed forward signal according to the first time delay and the first amplitude, and acquiring a second feed forward signal according to the second time delay and the second amplitude; setting a first preset angle adjustment value of a TRT (Top Pressure Recovery Turbine Unit) variable stator blade as a first value based on the first feed forward signal, and setting a second preset angle adjustment value of the TRT variable stator blade as a second value based on the first feed forward signal. According to the method and device disclosed by the invention, the technical problems in the method in the prior art that the top pressure fluctuation is great and blast furnace production is influenced can be solved.

Description

technical field [0001] The invention is applied to the technical field of ironmaking blast furnace top pressure control, and in particular relates to a method and device for controlling blast furnace top pressure. Background technique [0002] With the development of ironmaking technology in metallurgical blast furnaces, the requirements for top pressure control of blast furnaces are getting higher and higher. Due to the (Blast Furnace Top Gas Recovery Turbine Unit, TRT) blast furnace gas residual pressure turbine power generation device can recover to a maximum extent The energy of the blast furnace gas, and can replace the pressure reducing valve group to control the top pressure of the blast furnace, so it is widely used in the control of the top pressure of the blast furnace. [0003] The existing method of using TRT to control blast furnace top pressure generally adopts traditional PID control or cascaded PID control, that is, relying on experience, the set value of bla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00
CPCC21B5/006
Inventor 叶振江李志永张磊李双全
Owner BEIJING SHOUGANG CO LTD