Ball type hot blast stove burning process control method and system
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more