Coke oven combustion chamber straight movement temperature k uniform management and control method

Abstract

The invention relates to a control method for straight movement temperature k of a coke oven combustion chamber, and belongs to the technical field of coking production control methods. According to the technical scheme, a simulated synthetic waveform is compared with an actual waveform, and the usability of the simulated synthetic waveform is evaluated; according to the comparison of the simulated synthetic waveforms of different sequences and the comparison of wave crest and wave trough difference values, the 2-1 sequence k under the same working condition is better than the 5-2 sequence k, and the characteristics of each sequence k are analyzed clearly, so that the method is used for optimizing the thermal management and control of the coke oven and the design of the coke oven. According to the method, waveforms in a plurality of small cycles of a combustion chamber straight temperature standard flame path under the influence of a two-side carbonization chamber are simulated and synthesized, 2-1 series sequences k under the same working condition are determined to be superior to 5-2 series sequences according to comparison of simulated synthetic waveforms of different series sequences and comparison of wave crest and wave trough difference values, the characteristics of each series sequence k are analyzed clearly, and the method has the advantages of being simple and convenient to operate. The method can be used for optimizing thermal management and control of the coke oven and design of the coke oven, and is simple, reliable and high in cost performance especially under the condition of low productivity.

Description

Technical Field

[0001] The invention relates to a method for controlling the straight-line temperature K-average of a coke oven combustion chamber, and belongs to the technical field of coking production control methods. Background Art

[0002] In order to control the cost of coking production and reduce production capacity, the turnover time of the first phase 1# coke oven and 2# coke oven (both using 2-1 series sequence) was reduced to 60 hours, and the turnover time of the second phase 3# coke oven and 4# coke oven (both using 5-2 series sequence) was reduced to 48 hours. The turnover of 3# and 4# coke ovens was reduced to 48h, and the monthly K average was 0.63, 0.3 lower than before. The turnover of 1# and 2# coke ovens was reduced to 60 hours, and the monthly K average was 0.84, 0.1 lower than before. In response to the problem of too low monthly K of 3# and 4# coke ovens, the company organized multiple analyses and discussions, but still failed to analyze the cause of this problem. Summary of the invention

[0003] The purpose of the present invention is to provide a method for controlling the k-average temperature of a coke oven combustion chamber. The method utilizes the temperature waveforms in multiple small cycles of a known standard fire channel for the straight temperature of the combustion chamber under the influence of a single-sided carbonization chamber to simulate and synthesize the waveforms in multiple small cycles of a standard fire channel for the straight temperature of the combustion chamber under the influence of a double-sided carbonization chamber. By comparing the simulated synthetic waveforms of different series sequences and utilizing the peak-to-trough difference comparison, it is determined that the k-average of a 2-1 series sequence is better than that of a 5-2 series sequence under the same working condition. The k-average characteristics of each series sequence are clearly analyzed. The method can be used to optimize thermal engineering control and coke oven design, and is particularly suitable for k-average control under reduced production capacity. The method is simple, reliable, low-cost, and cost-effective.

[0004] According to the comparison of simulated synthetic waveforms of different string sequences, the peak-to-valley difference is compared to determine that the k average of 2-1 string sequence is better than that of 5-2 string sequence under the same working condition, and the k average characteristics of each string sequence are analyzed clearly. The method of the present invention is simple and reliable, only requires a computer and common office software, has extremely low cost and extremely high cost performance, and effectively solves the above problems existing in the background technology.

[0005] The technical solution of the present invention is: a method for controlling the straight-line temperature k-average of a coke oven combustion chamber, comprising the following steps: S1. Collect data and count the temperatures of each combustion chamber in each period of multiple small cycles of the standard straight temperature fire channel; S2. Draw the waveforms of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber; S3, simulate and synthesize the waveforms of multiple small cycles in the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chamber; S4, compare the simulated synthetic waveform with the actual waveform to evaluate the availability of the simulated synthetic waveform; S5. Based on the comparison of simulated synthetic waveforms of different string sequences and the comparison of peak and trough differences, it is determined that the k average of 2-1 string sequence is better than that of 5-2 string sequence under the same working conditions, and the characteristics of k average of each string sequence are clearly analyzed to optimize thermal control and coke oven design.

[0006] In the step S3, another curve is copied that is completely consistent with the waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber of the coke oven. According to the serial sequence characteristics and the actual temperature measurement time, the copied curve is translated in the horizontal axis direction according to the difference in the coal loading and coking stages, and then the average value of the two values ​​of the horizontal axis corresponding to the two curves is calculated to simulate the waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chambers of the synthetic coke oven.

[0007] In step S4, the simulated synthetic waveform is generally consistent with the actual waveform, and there are coefficient differences between the trough and the peak, so it is judged that this fitting method is feasible and in line with reality.

[0008] In step S5, the peak-to-valley difference of the simulated synthetic waveform of the 5-2 series sequence is greater than the peak-to-valley difference of the 2-1 series sequence by about 12 reference points, that is, under the same working conditions, the 2-1 series sequence k is better than the 5-2 series sequence, and the characteristics of each series sequence k are clearly analyzed, which can be used to optimize thermal control and coke oven design.

[0009] The beneficial effects of the present invention are as follows: by utilizing the temperature waveforms in multiple small cycles of a standard fire channel of a combustion chamber straight temperature under the influence of a known single-sided carbonization chamber, the waveforms in multiple small cycles of a standard fire channel of a combustion chamber straight temperature under the influence of a double-sided carbonization chamber are simulated and synthesized, and by comparing the simulated synthetic waveforms of different string sequences, by utilizing the peak-to-trough difference comparison, it is determined that the k average of a 2-1 string sequence under the same working condition is better than that of a 5-2 string sequence, and the k average characteristics of each string sequence are clearly analyzed, which is used for k average control under reduced production capacity, and is simple, reliable, low-cost, and cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a waveform excerpt of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-side carbonization chamber of the 3# coke oven in the embodiment of the present invention; Figure 2 It is a waveform excerpt of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-side carbonization chamber of the 1# coke oven in the embodiment of the present invention; Figure 3 It is a waveform excerpt of multiple small cycles of the standard fire channel of the combustion chamber straight temperature under the influence of the double-sided carbonization chamber of the 0.41 turnover difference of the 3# coke oven simulated by the embodiment of the present invention; Figure 4 It is a waveform excerpt of multiple small cycles of the standard fire channel of the combustion chamber straight temperature under the influence of the double-sided carbonization chamber with a turnover difference of 0.58 in the embodiment of the present invention; Figure 5It is a waveform excerpt of multiple small cycles of the standard fire channel of the combustion chamber straight temperature under the influence of the double-sided carbonization chamber with a turnover difference of 0.53 in the 1# coke oven according to the embodiment of the present invention; Figure 6 It is an excerpt of the actual waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chambers of the 3# coke oven in the embodiment of the present invention; Figure 7 It is a selected diagram of actual waveforms in multiple small cycles of the straight temperature standard fire channel of the combustion chamber under the influence of the double-sided carbonization chambers of the 1# coke oven in the embodiment of the present invention; Figure 8 It is a comparison diagram of the actual waveform and the simulated waveform in multiple small cycles of the straight temperature standard fire channel of the combustion chamber under the influence of the double-sided carbonization chamber of the 3# coke oven in the embodiment of the present invention; Fig. 9 It is a comparison diagram of the actual waveform and the simulated waveform in multiple small cycles of the straight temperature standard fire channel of the combustion chamber under the influence of the double-sided carbonization chamber of the 1# coke oven in the embodiment of the present invention; Fig.10 This is a comparison diagram of waveforms in multiple small cycles of a standard fire channel of the straight-line temperature of the combustion chamber under the influence of two-sided carbonization chambers with two turnover differences in a 3# coke oven simulated by an embodiment of the present invention. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solutions and advantages of the invention implementation cases clearer, the technical solutions in the implementation cases of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation cases. Obviously, the implementation cases described are only a small part of the implementation cases of the present invention, rather than all the implementation cases. Based on the implementation cases in the present invention, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0012] A method for controlling the k-average straight-line temperature of a coke oven combustion chamber comprises the following steps: S1. Collect data and count the temperatures of each combustion chamber in each period of multiple small cycles of the standard straight temperature fire channel; S2. Draw the waveforms of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber; S3, simulate and synthesize the waveforms of multiple small cycles in the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chamber; S4, compare the simulated synthetic waveform with the actual waveform to evaluate the availability of the simulated synthetic waveform; S5. Based on the comparison of simulated synthetic waveforms of different string sequences and the comparison of peak and trough differences, it is determined that the k average of 2-1 string sequence is better than that of 5-2 string sequence under the same working conditions, and the characteristics of k average of each string sequence are clearly analyzed, which can be used to optimize the thermal control of coke ovens.

[0013] In the step S3, another curve is copied that is completely consistent with the waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber of the coke oven. According to the serial sequence characteristics and the actual temperature measurement time, the copied curve is translated in the horizontal axis direction according to the difference in the coal loading and coking stages, and then the average value of the two values ​​of the horizontal axis corresponding to the two curves is calculated to simulate the waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chambers of the synthetic coke oven.

[0014] In step S4, the simulated synthetic waveform is generally consistent with the actual waveform, and there are coefficient differences between the trough and the peak, so it is judged that this fitting method is feasible and in line with reality.

[0015] In step S5, the peak-to-valley difference of the simulated synthetic waveform of the 5-2 series sequence is greater than the peak-to-valley difference of the simulated synthetic waveform of the 2-1 series sequence by about 12 reference points, that is, under the same working conditions, the 2-1 series sequence k is better than the 5-2 series sequence, and the characteristics of each series sequence k are clearly analyzed, which can be used to optimize thermal control and coke oven design. Example

[0016] Control the coking production cost and reduce the production capacity. The turnover time of the first phase 1# coke oven and 2# coke oven (both adopt 2-1 series sequence) is reduced to 60 hours, and the turnover time of the second phase 3# coke oven and 4# coke oven (both adopt 5-2 series sequence) is reduced to 48 hours. The turnover of 3# and 4# coke ovens is reduced to 48h, and the monthly K average is 0.63, which is 0.3 lower than before. The turnover of 1# and 2# coke ovens is reduced to 60 hours, and the monthly K average is 0.84, which is 0.1 lower than before.

[0017] Through a large amount of data statistical analysis on the temperatures in each period of multiple small cycles of the straight temperature standard fire channel of each combustion chamber of the 1# coke oven and the 3# coke oven, the waveforms of multiple small cycles of the straight temperature standard fire channel of the combustion chamber under the influence of the single-sided carbonization chamber of the 1# coke oven and the 3# coke oven were drawn (all taking the machine side as an example).

[0018] Through the statistical analysis of a large number of coke pushing records, it was found that for the 5-2 series coke ovens, there are two types of differences in the coal loading and coking stages between two adjacent carbonization chambers. The first type is 0.4 times the turnover difference, and the second type is 0.6 times the turnover difference; the difference in the coal loading and coking stages between two adjacent carbonization chambers in the 2-1 series is 0.5 times the turnover difference.

[0019] Copy another curve that is completely consistent with the waveforms of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber of the 3# coke oven. According to the characteristics of the serial sequence and the actual temperature measurement time, the copied curve is translated in the horizontal axis direction according to the difference in the coal loading and coking stages. Then the two curves are averaged with the two values ​​of the horizontal axis corresponding to the two curves to simulate and synthesize the waveforms of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chamber of the 3# coke oven, as shown in the figure. Figure 3 and Figure 4 , through comparison, it is found Figure 4 and Figure 3 Generally consistent, Figure 4 Compare Figure 3 7 coordinates behind. Figure 3 The difference between adjacent peaks and valleys is 44-53 reference values. The same method is used to simulate and synthesize the combustion chamber under the influence of the double-sided carbonization chamber of the 1# coke oven, the straight temperature standard fire channel, and multiple small cycle waveforms, such as Figure 5 The difference between adjacent peaks and troughs is 31-41 reference values.

[0020] Comparing the simulated synthetic waveforms of 3# and 1# coke ovens with the actual waveforms, it is found that the simulated synthetic waveform of 3# coke oven is roughly consistent with the actual waveform, but there are coefficient differences in the trough and peak. Comparing the waveform of 1# oven, it is found that the simulated synthetic waveform of 1# coke oven is roughly consistent with the actual waveform, but there are coefficient differences in the trough and peak. The comparison confirms that this fitting method is feasible and in line with reality.

[0021] By comparing the simulated synthetic waveforms of each series sequence, it is found that the peak-to-trough difference of the temperature waveform of the 5-2 series sequence is about 12 reference points greater than the peak-to-trough difference of the 2-1 series sequence. It can be concluded that under the same working conditions, the 2-1 series sequence k is better than the 5-2 series sequence.

[0022] By comparing simulated synthetic waveforms, it was confirmed that the low monthly average k of the 3# coke oven was due to the influence of the string sequence characteristics, and the average k of the 5-2 string sequence and the 2-1 string sequence was compared, the theoretical basis was made public, filling the gap in the industry.

[0023] The method of the invention is simple and reliable, has extremely low cost and high cost performance, and is suitable for promotion and application in the control of the straight-line temperature k-average of coke ovens.

Claims

1. A method for controlling the straight temperature k-average of a coke oven combustion chamber, characterized in that The following steps are involved: S1. Collect data and count the temperatures of each combustion chamber in each period of multiple small cycles of the standard straight temperature fire channel; S2. Draw the waveforms of multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber; S3, simulate and synthesize the waveforms of multiple small cycles in the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chamber; S4, compare the simulated synthetic waveform with the actual waveform to evaluate the availability of the simulated synthetic waveform; S5. Based on the comparison of simulated synthetic waveforms of different series, and by comparing the difference between peaks and troughs, it is determined that the k average of 2-1 series is better than that of 5-2 series under the same working conditions. The characteristics of the k average of each series are clearly analyzed, which can be used to optimize the thermal control and design of coke ovens.

2. A method for controlling the straight-line temperature k-average of a coke oven combustion chamber according to claim 1, characterized in that: In the step S3, another curve is copied that is completely consistent with the waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the single-sided carbonization chamber of the coke oven. According to the serial sequence characteristics and the actual temperature measurement time, the copied curve is translated in the horizontal axis direction according to the difference in the coal loading and coking stages, and then the average value of the two values ​​of the horizontal axis corresponding to the two curves is calculated to simulate the waveforms in multiple small cycles of the standard fire channel of the straight temperature of the combustion chamber under the influence of the double-sided carbonization chambers of the synthetic coke oven.

3. A method for controlling the straight-line temperature k-average of a coke oven combustion chamber according to claim 1, characterized in that: In step S4, the simulated synthetic waveform is generally consistent with the actual waveform, and there are coefficient differences between the trough and the peak, so it is judged that this fitting method is feasible and in line with reality.

4. A method for controlling the straight-line temperature k-average of a coke oven combustion chamber according to claim 1, characterized in that: In step S5, the peak-to-valley difference of the simulated synthetic waveform of the 5-2 series sequence is greater than the peak-to-valley difference of the simulated synthetic waveform of the 2-1 series sequence by about 12 reference points, that is, under the same working conditions, the 2-1 series sequence k is better than the 5-2 series sequence, and the characteristics of each series sequence k are clearly analyzed to optimize the thermal control and design of the coke oven.

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