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Method for adjusting top pressure of blast furnace by means of BPRT unit

A technology of top pressure and unit, applied in the field of metallurgy, can solve the problems of unbalanced top pressure, poor reliability, and inability to guarantee the stability of blast furnace top pressure, so as to ensure stability, improve regulation level, and avoid the phenomenon of uncontrolled top pressure regulation. Effect

Active Publication Date: 2020-08-25
德龙钢铁有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

The reliability of this control method is poor. When there is a module failure, line failure, or transmitter failure, it will cause top pressure imbalance and cannot guarantee the stability of the blast furnace top pressure.

Method used

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  • Method for adjusting top pressure of blast furnace by means of BPRT unit
  • Method for adjusting top pressure of blast furnace by means of BPRT unit
  • Method for adjusting top pressure of blast furnace by means of BPRT unit

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Embodiment Construction

[0024] The invention provides a method for adjusting the top pressure of a blast furnace by using a BPRT unit. By improving the top pressure signal of the blast furnace and the selection mode of the top pressure setting value, the method effectively overcomes the out-of-control phenomenon of the top pressure adjustment caused by the easy distortion of a single signal source. , to solve the problems described in the background technology.

[0025] Compared with traditional methods, this method has the following characteristics:

[0026] 1. The number of blast furnace top pressure signals connected to the BPRT unit automatic control system is optimized to three;

[0027] 2. Optimize the collection method of the top pressure signal;

[0028] 3. Carry out program screening for the adoption of top pressure process value;

[0029] 4. Optimization of the connection signal between the blast furnace automatic control system and the BPRT unit automatic control system;

[0030] 5. Tak...

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Abstract

The invention discloses a method for adjusting the top pressure of a blast furnace by means of a BPRT unit. The method includes the following steps that a, three top pressure transmitters are mountedon a gas ascending tube of the blast furnace simultaneously, and three ways of top pressure signals output by the three top pressure transmitters are input to a BPRT unit self-control system; b, the BPRT unit self-control system compares the received three ways of top pressure signals with set upper and lower limit values, and then the top pressure signals are selected according to the comparisonresults; and c, the BPRT unit self-control system adjusts and controls the top pressure of the blast furnace according to the selected measured value of the top pressure signals and the top pressure set value provided by a blast furnace self-control system. According to the method, multiple ways of the top pressure signals are measured simultaneously, and the measured value of the top pressure signals is selected reasonably. Compared with traditional methods for adjusting and controlling the top pressure of blast furnaces, the method has the advantages that the defect that single ways of top pressure signals are prone to losing or are inaccurate is overcome, the adjusting and controlling level of the top pressure of the blast furnace can be increased effectively, the stability of the top pressure can be guaranteed, and smooth production of the blast furnace can be guaranteed.

Description

technical field [0001] The invention relates to a method for adjusting the top pressure of a blast furnace by using a BPRT unit, which can improve the stability of the top pressure of the blast furnace and belongs to the technical field of metallurgy. Background technique [0002] In the blast furnace smelting process, whether the top pressure is stable is very important to the blast furnace production. The BPRT unit is a coaxial drive unit of the blast furnace blower and the gas turbine. It uses the mechanical energy output by the gas turbine to directly drive the blower, which can save about 50% of the power consumption of the blower. Compared with the traditional TRT system, it reduces power generation and The network link can more effectively recover the residual pressure and temperature of blast furnace gas, and has the function of adjusting the pressure of the top of the blast furnace. In the process of adjusting the blast furnace top pressure by the BPRT unit, failur...

Claims

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Application Information

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IPC IPC(8): C21B5/06
CPCC21B5/06C21B5/006Y02P10/25
Inventor 暴振岭张军红崔继森刘广武毕新兴张春茂侯景恩陈月光郭瑞明郭彦刚翟立凯关孟冬朱红伟
Owner 德龙钢铁有限公司
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