Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ball type hot blast stove burning process control method and system

A process control and hot blast stove technology, applied in steel manufacturing process, furnaces, blast furnaces, etc., can solve the problems of real-time precise control of the burning process of difficult-to-hot blast stoves, and achieve the effect of real-time precise control

Active Publication Date: 2019-09-20
CENT SOUTH UNIV
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The invention provides a method and system for controlling the firing process of a spherical hot blast stove, which solves the technical problem that it is difficult to carry out real-time and precise control of the firing process of the hot blast stove in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ball type hot blast stove burning process control method and system
  • Ball type hot blast stove burning process control method and system
  • Ball type hot blast stove burning process control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] refer to figure 1 , The method for controlling the firing process of a spherical hot blast stove provided in Embodiment 1 of the present invention includes:

[0070] Step S101, based on the historical data of the hot blast stove, matching to obtain the best air-fuel ratio;

[0071] Step S102, according to the gas-solid two-phase heat transfer in the furnace and the process structure, establish a transient heat transfer model of the regenerator of the hot blast stove;

[0072] Step S103, based on the transient heat transfer model of the regenerator of the hot blast stove, a temperature prediction model is established, and the temperature prediction model includes a vault temperature prediction model and an exhaust gas temperature prediction model;

[0073] In step S104, based on the temperature prediction model, the optimal control parameters for controlling the firing process of the hot blast stove are obtained in real time.

[0074] The method for controlling the fir...

Embodiment 2

[0077] refer to figure 2 , the method for controlling the firing process of a spherical hot blast stove provided in Embodiment 2 of the present invention includes:

[0078] Step S201, preprocessing the collected historical data of hot blast stove firing.

[0079] Due to the existence of interference, the data collected in this embodiment is incomplete or inaccurate, so the Lagrangian interpolation method is used to process the missing values; to preserve the shape and width of the data, Savitzky-Golay filtering is used; to eliminate The impact of the variable dimension on the calculation is normalized for each variable.

[0080] Step S202, re-describing the state parameter vector and the operation parameter vector through a limited time window, so as to obtain an operation mode conforming to the process.

[0081] Data in complex industrial production processes mainly include operating parameters and state parameters. The operating parameters at time τ can be expressed as: ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a ball type hot blast stove burning process control method and system. The method comprises the steps that the optimal air-fuel ratio is obtained through matching based on hot blast stove burning historical data; a hot blast stove regenerative chamber transient heat transfer model is established according to stove inner gas-solid two-phase heat transfer and a process structure; temperature predicting models are established based on the hot blast stove regenerative chamber transient heat transfer model and include the vault temperature predicting model and the waste gas temperature predicting model; and the optimal control parameters for controlling the hot blast stove burning process are obtained in real time based on the temperature predicting models. The technical problem that the hot blast stove burning process is hard to control precisely in real time in the prior art is solved. By analyzing the ball type hot blast stove burning process, the air-fuel ratio is controlled from the data perspective according to a field process, the coal gas flow rate is controlled form the mechanical perspective, the air-fuel ratio and the coal gas flow rate are caused to reach the optimal values at the same time, in addition, the optimal coal gas flow rate is optimized in real time based on the matched optimal air-fuel ratio, and the hot blast stove burning process can be precisely controlled in real time.

Description

technical field [0001] The invention relates to the technical field of converter steelmaking, in particular to a method and system for controlling the firing process of a spherical hot blast stove. Background technique [0002] The hot blast stove is the key equipment in the blast furnace production process, and the temperature and duration of the hot blast it provides directly affect the blast furnace production. The ball hot blast stove works in a cyclical cycle. In a working cycle, it is mainly divided into a combustion stage and an air supply stage. In the combustion stage, blast furnace gas and combustion-supporting air are combusted in the combustion chamber according to a certain ratio, and the smoke generated by combustion flows through the regenerator to heat the heat storage ball to store heat, and then flows out from the flue until the heat storage capacity of the heat storage ball meets the requirements. heat storage requirements. In the air supply stage, the c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/00
CPCC21B9/00C21B2300/04
Inventor 蒋朝辉李金鹏陈致蓬张海峰桂卫华谢永芳阳春华
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com