Multi-dimensional fluid sintering ignition control method with reduced gas cost
An ignition control, multi-flow technology, applied in the field of multi-flow sintering ignition control, can solve the problems of difficult automatic control of ignition intensity, high cost of sintering ignition coke oven gas, alleviating the shortage of coke oven gas, huge economic and social benefits, The effect of reducing production costs
Inactive Publication Date: 2012-07-18
CENT SOUTH UNIV
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to provide a multi-flow sintering ignition control method that reduces the cost of gas, which effectively solves the problems of high cost of sintering coke oven gas and difficulty in automatic control of ignition intensity. The cost is reduced on the basis that the gas meets the ignition strength set value
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0033] like figure 1 As shown, the igniter is installed above the head of the sintering trolley. Coke oven gas, blast furnace gas and air are mixed and fully burned in the igniter, and the flame is sprayed out from the igniter burner for ignition. After the surface mixture is ignited by the igniter, it starts to burn from top to bottom under the action of the exhaust fan. like figure 2 Shown is the multi-flow sintering ignition control structure diagram. When the ignition intensity setting value is given, the required coke oven gas flow setting value is calculated according to the ignition intensity and gas flow relationship model. Overemphasis on the ignition intensity will make the ignition temperature If it is too low or too high, the ignition temperature is corrected for the model; the high coke ratio is set based on manual operation experience, and the product of the coke oven gas flow rate and the high coke ratio is used as the set value of the blast furnace gas flow r...
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 multi-dimensional fluid sintering ignition control method reducing gas cost, aiming at the problems of high gas cost and difficulty in automatic control of the ignition strength in the sintering ignition process. The method takes the ignition strength as the control target and is characterized by firstly establishing an ignition strength and gas flow relation model basedon ignition temperature modification and adopting the multi-dimensional fluid sintering ignition control technology based on the relation model, namely adopting the mixed blast furnace and coke furnace gas to replace the previous single coke furnace gas as the ignition gas, thus reducing the cost on the basis that the gas satisfies the set value of the ignition strength. The control technology provided by the invention reduces the gas cost and improves the sintering ignition efficiency.
Description
technical field [0001] The invention relates to a multi-flow sintering ignition control method for reducing gas cost. technical background [0002] Sintering is an important process in the ironmaking process. The modern draft sintering process is to form a mixture of iron ore powder, flux, fuel and returned ore in a certain proportion, with an appropriate amount of water, after mixing and pelletizing, spread it on the trolley of the belt sintering machine and place it on a certain Ignite and burn under negative pressure. During the sintering process, ignition combustion is an important factor affecting the quality of sintered ore. Insufficient ignition intensity or low ignition temperature will lead to incomplete combustion of the material layer and the formation of sintered ore with low strength. When the ignition intensity is too high or the temperature is too high, the surface layer of sintered cake is over-melted, which reduces the air permeability of the material laye...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F27B21/14
Inventor 吴敏曹卫华陈鑫焦国华李铭单丁
Owner CENT SOUTH UNIV