[0070] Example
[0071] Please refer to figure 1 , A parameter adaptive adjustment method in the first embodiment of the present invention is applied to a pellet production system, the pellet production system includes a disc pelletizer, and the method includes:
[0072] S101: Detect the particle size of the green balls produced by the disc pelletizer;
[0073] S102: Based on the particle size of the green balls, determine whether the green balls produced by the disc pelletizer meet a preset condition;
[0074] S103: If not, determine the parameter adjustment strategy of the pellet production system based on the particle size of the green pellets.
[0075] Wherein, the adjustment parameters corresponding to the parameter adjustment strategy include any one or a combination of: pelletizing water replenishment amount, rotating speed of pelletizing machine, and pelletizing feed amount.
[0076] Specifically, in this embodiment, the pellet production system includes a disc pelletizer, and a set of green ball particle size detection device is installed at the end of the disc pelletizer's discharge belt, which can accurately detect the particle size distribution of green pellets. Install a set of water replenishing device at an appropriate position near the disc pelletizer, and arrange the water outlet point of the water replenishing device below the blanking point of the feeding device. The device is used to provide water for pelletizing. The accuracy of the water replenishing regulating device is required in 0.1m 3 /h.
[0077] The particle size of the green balls produced by the disc pelletizer is detected by the green ball particle size detection device, and then it is judged whether the size of the green balls produced meets the preset conditions of the production requirements, and then the particle size of the produced green balls is too large If it is too small, adjust the raw ball parameters according to the corresponding adjustment strategy. The adjusted raw ball parameters include any one or more combinations of the water replenishment amount of the pelletizing machine, the speed of the pelletizing machine, and the pelletizing feed quantity, and then adopt The parameter adaptive adjustment method in this embodiment can adaptively adjust the parameters of the pellet production system according to the particle size of the green pellets, so as to replace manual operation with automatic adjustment, improve the accuracy and timeliness of parameter adjustment, and improve green pellets. The stability of the preparation process ensures that the size of the green pellets continues to meet the production requirements, creates conditions for the subsequent roasting operation and the quality of the finished pellets to meet the standards and stability, improves the pelletizing quality, and reduces the labor intensity of the operators.
[0078] Further, in this embodiment, when step S101 is specifically implemented, it is implemented in the following manner:
[0079] The particle size of the green balls produced by the disc pelletizer is detected according to a preset period.
[0080] Specifically, in this embodiment, since the raw materials and components of the green balls often change, it is necessary to detect the particle size of the green balls produced by the disc pelletizing machine according to a preset cycle, and then it can be adaptively adjusted according to the preset cycle. Adjust the raw ball parameters to ensure the quality of the raw ball. In the specific implementation process, the preset period can be set according to actual needs, for example: set to 1 hour, 2 hours, etc., here, this application does not limit it.
[0081] Further, in the current detection cycle, it is necessary to determine whether the raw balls meet the preset conditions of production requirements according to the detected particle size of the raw balls produced by the disc pelletizer. Step S102 can be implemented by the following steps:
[0082] Determining the first proportion of the particle size distribution of the green balls in the first preset range;
[0083] Judging whether the first proportion is greater than a first threshold, and obtaining a judgment result;
[0084] Based on the judgment result, it is judged whether the raw balls produced by the disc pelletizing machine meet the preset conditions, wherein, when the judgment result is yes, it indicates that the raw balls produced by the disc pelletizing machine satisfy The preset condition, when the judgment result is negative, it indicates that the green balls produced by the disc pelletizer do not meet the preset condition.
[0085] Specifically, in this embodiment, it is determined that the size of the green balls meets the requirements of the first preset range, and furthermore, it is determined that the particle size of the green balls produced by the disc pelletizer falls within the first proportion of the first preset range. In the parameter adaptive adjustment method, a first threshold is first preset, and the first threshold is the proportion of production requirements falling within the first preset range. Determine whether the first proportion of the actually produced green balls falling within the first preset range is greater than the first threshold. If the first proportion is greater than the first threshold, it indicates that the green balls produced in the current cycle meet the preset production requirements The condition is that if the first proportion is greater than the first threshold, the green balls produced in the current cycle meet the preset production requirements, and the pelletizing parameters need to be adjusted.
[0086] For example: the first preset range is set to 8mm-16mm, and the first threshold is set to 80%, indicating that when the particle size of the green ball falls between 8mm-16mm and the proportion is greater than 80%, it meets the preset conditions of production requirements, and When the particle size of the green ball falls between 8mm-16mm and the proportion is less than or equal to 80%, it does not meet the preset conditions of production requirements. In the specific implementation process, both the first preset range and the first threshold can be set according to actual needs, and this application does not limit it here.
[0087] Further, when the raw balls produced by the disc pelletizing machine do not meet the preset conditions, step S103 can be implemented through the following steps:
[0088] Determine the second proportion of the particle size distribution of the green balls in the second preset range and the third proportion of the particle size distribution of the green balls in the third predetermined range, wherein the upper part of the second preset range The limit is less than the lower limit of the first preset range, the lower limit of the third preset range is greater than the upper limit of the first preset range, the first proportion, the second The sum of the proportion and the third proportion is 1;
[0089] Determining whether the second proportion is greater than a second threshold and determining whether the third proportion is greater than a third threshold, wherein the sum of the first threshold, the second threshold, and the third threshold is 1, The first threshold is greater than the sum of the second threshold and the third threshold;
[0090] When the second proportion is greater than the second threshold, adjusting the parameters of the pellet production system according to a first preset strategy;
[0091] When the third proportion is greater than the third threshold, the parameters of the pellet production system are adjusted according to a second preset strategy.
[0092] Wherein, the adjusting the parameters of the pellet production system according to the first preset strategy includes:
[0093] Increasing the pelletizing water supplement according to the first preset time interval until the raw pellets produced by the disc pelletizing machine meet the preset condition;
[0094] If the increased amount of pelletizing water supplement reaches the first preset amount of water, and the green pellets produced by the disc pelletizing machine do not meet the preset condition, the rotation speed of the pelletizing machine is increased at a second preset time interval , Until the green balls produced by the disc pelletizing machine meet the preset conditions;
[0095] If the increased rotational speed reaches the preset rotational speed or the number of increased rotational speeds reaches the first preset number, and the green balls produced by the disc pelletizing machine do not meet the preset condition, all the balls are reduced according to the third preset time interval. The pelletizing feed amount is described until the green pellets produced by the disc pelletizing machine meet the preset condition.
[0096] If the reduced pelletizing feed rate reaches the first preset amount or the pellet pelletizing feed rate is reduced to a second preset number of times, and the green pellets produced by the disc pelletizing machine do not meet the preset condition , Output prompt information.
[0097] Wherein, the adjusting the parameters of the pellet production system according to the second preset strategy includes:
[0098] Reducing the pelletizing water supply amount according to the fourth preset time interval until the green pellets produced by the disc pelletizing machine meet the preset conditions;
[0099] If the reduced pelletizing water supply reaches the second preset water volume, and the green pellets produced by the disc pelletizing machine do not meet the preset conditions, the rotation speed of the pelletizing machine is reduced according to the fifth preset time interval , Until the green balls produced by the disc pelletizing machine meet the preset conditions;
[0100] If the reduced rotational speed reaches the preset rotational speed or the number of reduced rotational speeds reaches the third preset number, and the green balls produced by the disc pelletizing machine do not meet the preset conditions, increase the number of times according to the sixth preset time interval. The pelletizing feed amount is described until the green pellets produced by the disc pelletizing machine meet the preset condition.
[0101] If the increased pelletizing feed rate reaches the second preset amount or the pelletizing feed rate is increased to the fourth preset number of times, and the green pellets produced by the disc pelletizing machine do not meet the preset condition , Output prompt information.
[0102] Specifically, in this embodiment, the first threshold value corresponding to the proportion of the green ball particle size falling in the first preset range is set to M, and the second threshold value corresponding to the proportion of the green ball particle size falling in the second preset range being M1 , The third threshold corresponding to the proportion of the green ball particle size falling in the third preset range is M2, and M+M1+M2=100%. Set the single adjustment value W and the upper limit value of the replenishment amount W H , Lower limit of water supplement W L. Set the single adjustment value R and the upper limit value R of the speed of the disc pelletizer H 、Lower speed limit R L , The maximum number of adjustments R N. Set feeding amount single adjustment value F, feeding amount upper limit value to F H Lower limit value of material F L , The maximum number of adjustments F N. A first preset time interval T1, a second preset time interval T2, a third preset time interval T3, a fourth preset time interval T4, a fifth preset time interval T5, and a sixth preset time interval T6 are set. In the specific implementation process, the above-mentioned preset values can be set according to actual needs, and this application does not limit it here.
[0103] Furthermore, it is detected that the first proportion of the particle size of the green balls produced by the disc pelletizer in the first preset range is P, the second proportion of the particle size of the green balls in the second preset range is P1, The third proportion of the granularity in the third preset range is P2. Compare P and M. If P is greater than M, no parameter adjustment is made in the current cycle. If P is less than or equal to M, compare P1 with M1, P2 and M2 respectively, when P1> At M1, it is judged that the overall pellet size is too small, and the pelletizing parameters need to be adjusted according to the first preset strategy. When P2> At M2, it is judged that the overall pellet size is too large, and the pelletizing parameters need to be adjusted according to the second preset strategy.
[0104] When the pellet size is relatively small and the pelletizing parameters are adjusted according to the first preset strategy, the pelletizing water supply amount, the pelletizing machine rotation speed and the pelletizing feed quantity are sequentially adjusted. details as follows:
[0105] First, adjust the pelletizing water replenishment amount, increasing the replenishing water amount W every T1, until the particle size of the green pellets produced after adjusting the parameters is greater than the first proportion P corresponding to the first preset range. If the water supplement reaches the upper limit W H When the pellet size is still too small, stop adjusting the water supplement and adjust the speed of the pelletizing disk. Increase the pelletizing disk rotation speed R every T2 until the particle size of the green balls produced after adjusting the parameters is greater than M in the first preset range, if the pelletizing disk rotation speed reaches the upper limit R H Or the number of adjustments reaches the maximum value R N When the pellet size is still too small, stop adjusting the speed of the pelletizing disk and adjust the pelletizing feed rate. Decrease the feeding amount F every T3 until the particle size of the green balls produced after adjusting the parameters is greater than M in the first preset range, if the feeding amount reaches the lower limit F L , Or the number of adjustments reaches the maximum value F N When the pellet size is still too small, stop adjusting the feed rate, output prompt information, and prompt manual intervention.
[0106] When the pellet size is generally too large and the pelletizing parameters are adjusted according to the second preset strategy, the pelletizing water supply amount, the pelletizing machine speed and the pelletizing feed quantity are sequentially adjusted. details as follows:
[0107] First, adjust the pelletizing water replenishment amount, increasing the replenishing water amount W every T4, until the particle size of the green pellets produced after adjusting the parameters is greater than the first proportion P corresponding to the first preset range. If the water supplement reaches the lower limit W L When the pellet size is still too large, stop adjusting the amount of water and adjust the speed of the pelletizing disk. Reduce the pelletizing disk rotation speed R every T5 until the particle size of the green balls produced after adjusting the parameters is greater than M in the first preset range. If the pelletizing disk rotation speed reaches the lower limit R L Or the number of adjustments reaches the maximum value R N When the pellet size is still too large, stop adjusting the speed of the pelletizing disk and adjust the pelletizing feed rate. Increase the feeding amount F every T3 until the particle size of the green balls produced after adjusting the parameters is greater than M in the first preset range, if the feeding amount reaches the upper limit F H , Or the number of adjustments reaches the maximum value F N When the pellet size is still too large, stop adjusting the feed rate and output prompt information to prompt manual intervention.
[0108] A complete embodiment is used to describe the parameter adaptive adjustment method in detail below.
[0109] The first threshold corresponding to the proportion of green pellets falling in the range of 8mm-16mm is 80%, the second threshold corresponding to the proportion of green pellets falling in the range of less than 8mm is 12%, and the proportion of green pellets falling in the range of greater than 16mm is 12%. The corresponding third threshold is 8%. Set the single adjustment value of the replenishment amount to 0.3t/h, the upper limit value of the replenishment amount to 2t/h, and the lower limit value of the replenishment amount to 0. Set the single adjustment value of the speed of the disc pelletizer to 0.4R/min, the upper limit of the speed is 7.2R/min, the lower limit of the speed is 5R/min, and the maximum number of adjustments is 4. Set the single adjustment value of the feeding amount to 10t/h, the upper limit value of the feeding amount to 140t/h, the lower limit value of the feeding amount to 110t/h, and the maximum number of adjustments to 3. Set the first preset time interval T1, the second preset time interval T2, the third preset time interval T3, the fourth preset time interval T4, the fifth preset time interval T5, and the sixth preset time interval T6. It is 5min (minutes).
[0110] If it is detected that the particle size of the green balls produced by the disc pelletizer is 8mm-16mm, the first proportion is 75%, the second proportion of the green balls smaller than 8mm is 20%, and the particle size of the green balls is greater than 16mm. The third proportion is 5%. If the first proportion of 75% is less than 80%, and the second proportion of 20% is greater than 8%, it is determined that the overall pellet size is too small, and the pelletizing parameters need to be adjusted according to the first preset strategy.
[0111] Firstly, adjust the water supply for pelleting, increase the water supply by 0.3t/h every 5 minutes, until the particle size of the green balls produced after adjusting the parameters is greater than 80% of the first proportion corresponding to 8mm-16mm. If when the water supplement amount reaches the upper limit of 2t/h, the pellet size is still too small, stop adjusting the water supplement amount and adjust the speed of the pelletizing disk. Increase the pelletizing disk rotation speed by 0.4R/min every 5 minutes until the particle size of the green balls produced after adjusting the parameters is greater than 80% corresponding to 8mm-16mm. If the pelletizing disk rotation speed reaches the upper limit of 7.2R/min or When the number of adjustments reaches the maximum value of 4, and the pellet size is still too small, stop adjusting the speed of the pelletizing disk and adjust the pelletizing feed rate. Decrease the feed rate by 10t/h every 5 minutes until the particle size of the green balls produced after adjusting the parameters is greater than 80% corresponding to 8mm-16mm. If the feed rate reaches the lower limit of 110t/h, or When the number of adjustments reaches the maximum value of 3, and the pellet size is still too small, stop adjusting the feeding amount, output voice prompts, and prompt the staff for manual intervention.
[0112] If it is detected that the particle size of the green balls produced by the disc pelletizer is 8mm-16mm, the first proportion is 75%, the particle size of the green balls is less than 8mm, the second proportion is 5%, and the particle size of the green balls is greater than 16mm. The third proportion is 20%. If the first proportion of 75% is less than 80%, and the third proportion of 20% is greater than 12%, it is determined that the overall pellet size is too large, and the pelletizing parameters need to be adjusted according to the second preset strategy.
[0113] First of all, adjust the water supply for pelletizing, reduce the water supply by 0.3t/h every 5 minutes, until the particle size of the green balls produced after adjusting the parameters is greater than 80% corresponding to 8mm-16mm. If the particle size of the green pellets is still too large when the water supplement amount reaches the lower limit 0, stop adjusting the water supplement amount and adjust the speed of the pelletizing disk. Reduce the pelletizing disk rotation speed by 0.4R/min every 5 minutes, until the particle size of the green balls produced after adjusting the parameters is greater than 80% corresponding to 8mm-16mm, if the pelletizing disk rotation speed reaches the lower limit 5R/min or adjust When the number of times reaches the maximum value of 4, and the pellet size is still too large, stop adjusting the speed of the pelletizing plate and adjust the pelletizing feed rate. Increase the feed rate by 10t/h every 5 minutes until the particle size of the green balls produced after adjusting the parameters is greater than 80% corresponding to the first 8mm-16mm. If the feed rate reaches the upper limit of 140t/h, or When the number of adjustments reaches the maximum value of 3, and the raw pellet size is still too large, stop adjusting the feeding amount, output voice prompts, and prompt the staff for manual intervention.
