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Intelligent anti-blocking device and method for large blast furnace injection system based on spectrum analysis

A spectrum analysis, large-scale technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as easy blockage, low degree of automation, and low injection efficiency, and achieve the goals of reducing the probability of blockage, high reliability, and improving injection efficiency Effect

Active Publication Date: 2022-07-01
NANJING INST OF TECH
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Problems solved by technology

[0004] The injection system of the existing coal injection system is mainly based on fixed control mode, and the degree of automation is low. The particle size of the powder discharged from the pulverized coal feeder cannot be automatically identified and dynamic injection is performed, and the injection efficiency is low. Low, prone to clogging issues

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  • Intelligent anti-blocking device and method for large blast furnace injection system based on spectrum analysis
  • Intelligent anti-blocking device and method for large blast furnace injection system based on spectrum analysis
  • Intelligent anti-blocking device and method for large blast furnace injection system based on spectrum analysis

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Embodiment Construction

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0030] like figure 1 As shown in the figure, in the injection system of the present invention, a feeding control unit and a material weighing control unit are set at the feeding port of the coal mill, and the latter stage is connected to the injection flow rate control unit, and the injection rate is V; Two pressure sensors are installed at the outlet respectively, and the collected pressure values ​​are p1 and p2; the centralized control device is equipped with a central processing unit of FPGA+DSP, which collects the pressure collection unit of the coal conveying pipeline, the injection material flow rate control unit, and the blanking weighing. Unit, blanking control unit; the central processing unit collects the sensor signal processing of each sub-unit module, and according to the internal judgment logic, the signal output of each contro...

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Abstract

The invention discloses an intelligent anti-blocking device and method for a large blast furnace injection system based on spectrum analysis, and relates to a large blast furnace injection system and a centralized control method. Weighing parameters, pre-judging the pass rate of pulverized coal in advance, dynamically adjusting the injection pressure and controlling the gas flow rate in advance, eradicating the phenomenon of pulverized coal clogging in the system, realizing the self-adaptive centralized control method of large blast furnace injection system without clogging, for high efficiency and high precision The implementation of injection technology provides guarantee, which can effectively improve the production efficiency and product quality of the injection system.

Description

technical field [0001] The invention relates to the technical field of a large blast furnace injection system and a centralized control method, in particular to an intelligent anti-blocking device and method for a large blast furnace injection system based on spectrum analysis. Background technique [0002] Blast furnace injection fuel (fuel injection into blast furnace), a blast furnace enhanced smelting technology in which gas, liquid or solid fuel is injected into the blast furnace from the tuyere through special equipment to replace part of the coke in the blast furnace charge. [0003] It improves blast furnace operation, increases pig iron production and reduces pig iron costs. Blast furnace continuous casting ironmaking uses metallurgical coke as fuel and reducing agent, and the injection fuel is converted into CO and H at high temperature in the tuyere area. 2 , can replace part of the coke burned by the tuyere, generally 20% to 30%, and up to 50%. Fuel injection h...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00
CPCC21B5/003C21B5/006
Inventor 杨小兰刘极峰洪磊陈亚崔润
Owner NANJING INST OF TECH
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