Method and device for controlling residual oxygen in annealing furnace
A control method and a technology of residual oxygen, applied in heat treatment process control, furnace, manufacturing tools, etc., can solve problems such as inability to meet different needs
Active Publication Date: 2021-08-20
SHOUGANG JINGTANG IRON & STEEL CO LTD +1
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However, the above control methods cannot meet the different needs of different furnace conditions
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[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0041] An embodiment of the present invention provides a method for controlling residual oxygen in an annealing furnace, which is applied in an annealing furnace, such as figure 1 As shown, the method includes:
[0042] Step 101: Obtain the target temperature difference value of the annealing furnace at the current moment, and the target temperature difference value is the difference between the rated temperature value and the actu...
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Abstract
The present invention relates to the technical field of annealing technology, and in particular to a method and device for controlling residual oxygen in an annealing furnace. The method includes: obtaining a target temperature difference value at the current moment of the annealing furnace, and the target temperature difference value is the rated temperature value of the annealing furnace and the actual temperature value of the annealing furnace. The difference between the temperature values; based on the size relationship between the target temperature difference and the temperature rise boundary temperature value and the temperature drop boundary temperature value, determine the target residual oxygen model corresponding to the target temperature difference value, wherein, with the temperature rise boundary temperature value The two target temperature difference values having different relationship with the cooling boundary temperature value correspond to different target residual oxygen models; the residual oxygen in the annealing furnace is controlled according to the target residual oxygen model. The present invention adopts the above-mentioned control mode to meet different requirements of different furnace conditions, and improves the utilization rate of the calorific value of the coal gas.
Description
technical field [0001] The invention relates to the technical field of annealing technology, in particular to a method and device for controlling residual oxygen in an annealing furnace. Background technique [0002] In the annealing furnace, reasonable control of the oxygen content in the exhaust gas is an important means to maintain the optimal air-fuel ratio, improve combustion efficiency, and reduce heat loss. Controlling the oxygen content in the flue gas in the heating section of the annealing furnace so as to maintain the optimal air-fuel ratio plays a vital role in improving the combustion quality of the heating furnace. In the prior art, when controlling the residual oxygen in the heating section, whether it is low power or high power, a unified residual oxygen model is used for control, that is, the residual oxygen gradually decreases as the power increases. However, the above-mentioned control methods cannot meet the different needs of different furnace condition...
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IPC IPC(8): C21D1/26C21D11/00C21D9/54G06F30/20G06F119/08
CPCC21D1/26C21D11/00C21D9/54G06F2119/08G06F30/20Y02P10/20
Inventor 任伟超李靖付振兴张晓峰李冠雄乔梁王振鹏张学范赵智勇苏策陈彪律琳琳杨志强
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD