| 饲料用秸秆丝化多频快速压缩成型工艺参数优化 |
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| 引用本文： | 王瑞丽,魏楷峰,刘洋,陈中玉,马方,刘德军.饲料用秸秆丝化多频快速压缩成型工艺参数优化[J].农业工程学报,2016,32(21):277-281. |
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| 作者姓名： | 王瑞丽 魏楷峰 刘洋 陈中玉 马方 刘德军 |
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| 作者单位： | 沈阳农业大学工程学院,沈阳,110866 |
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| 基金项目： | 农业部公益性行业（农业）科研专项（201503134） |
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| 摘 要： | 为了进一步探明丝化后干玉米秸秆压缩成型的最佳工艺参数,利用WDW-200微机控制电子式万能试验机,以秸秆含水率、最大压缩力(能够压缩成型的最小压缩力)、压缩次数和压缩速度为影响因子,对饲料用玉米秸秆丝化后压缩成型块的松弛比进行了二次回归旋转组合试验研究。建立并分析了4个影响因子对玉米秸秆丝化压缩成型松弛比的回归模型,并进行了验证试验。结果表明:丝化后玉米秸秆压缩成型最佳工艺条件为:含水率为7.8%~18.3%,能够成型的最小压缩力为6.22 MPa,压缩次数为2~6次,压缩速度为128~337 mm/min。在此工艺条件下,干玉米秸秆丝化压缩成型的松弛比在1.2和1.5之间,均能满足实际生产中较低能耗与生产质量的要求。该试验对压缩工艺的优化、压缩设备的研制和了解压缩成型后产品的特性具有参考意义。
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| 关 键 词： | 秸秆 优化 饲料 多频快速压缩成型 二次回归旋转组合试验 松弛比 |
| 收稿时间： | 2016/3/18 0:00:00 |
| 修稿时间： | 2016/9/14 0:00:00 |
Optimization of process parameters for multi-frequency rapid compression molding of corn stalk silk used for forage |
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| Wang Ruili,Wei Kaifeng,Liu Yang,Chen Zhongyu,Ma Fang and Liu Dejun.Optimization of process parameters for multi-frequency rapid compression molding of corn stalk silk used for forage[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(21):277-281. |
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| Authors: | Wang Ruili Wei Kaifeng Liu Yang Chen Zhongyu Ma Fang and Liu Dejun |
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| Institution: | College of Engineering, Shenyang Agricultural University, Shenyang 110866, China,College of Engineering, Shenyang Agricultural University, Shenyang 110866, China,College of Engineering, Shenyang Agricultural University, Shenyang 110866, China,College of Engineering, Shenyang Agricultural University, Shenyang 110866, China,College of Engineering, Shenyang Agricultural University, Shenyang 110866, China and College of Engineering, Shenyang Agricultural University, Shenyang 110866, China |
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| Abstract: | Abstract: In order to obtain the best process parameters of compression molding with corn straw after silking, corn stalk collected from the test field of Land and Environment College, Shenyang Agricultural University was studied by using the WDW-200 testing machine controlled by computer and the cylinder sleeve from a six-cylinder engine as the mould. In consideration of physical characteristics of the compressed briquettes used for forage, the relaxation ratio of the briquettes was taken as objective function. The key experimental factors included the moisture content of the materials, the maximum pressure (namely the minimum pressure for compression molding), the frequency of compression and the velocity of compression, and the quadratic regression rotary combination test of relaxation ratio of the compressed briquettes with the corn stalk after silking was performed. At the same time, the regression model between the relaxation ratio and the 4 factors was established. The experimental results indicated that the materials moisture content ranging from 7.8% to 18.3%, the minimum pressure 6.22 MPa for compression molding, compression for 2-6 times and the velocity of compression ranging from 128 to 337 mm/min were the optimum technological conditions for the compression molding. Then the validation test under the optimum technological conditions was carried out and the results indicated that the relaxation ratio of the briquettes was from 1.2 to 1.5, which could satisfy the request of the lower energy consumption and the stable shape. As to the established regression equation, the relative error between the predicted value and the measured value was 2.87% under the optimal condition. Additionally, the influences of the moisture content of the materials, the minimum pressure for compression molding, the frequency of compression and the velocity of compression on the slack ratios of the compressed briquettes were analyzed. The influence of the moisture content of material was obvious, and the higher moisture content of material made corn straw hard to mold even compressed with higher pressure, but the compressed briquette with too low moisture content of material maybe took off the dreg. To ensure the relaxation ratio of the compressed briquettes is less than 1.5, the moisture content of the corn straw after silking must be lower than 20%, and to obtain the better compression molding effect, the moisture content of corn straw after silking should be maintained above 10%. When the relaxation ratio reaches a certain value, the increasing of the maximum pressure is useless, thus the appropriate compressive force not only reduces the energy consumption and improves the efficiency, but also reduces the damage to the equipment. The compression frequency and the compression velocity had linear relationship with the relaxation ratio of the briquette, and they had also certain interactions on the relaxation ratio of the briquette; the lower compressive force with high-frequency fast compression can get a similar compression molding effect with the single higher compressive force. The experiment is significant for the optimization of the compression process of corn straw used for forage. The experimental results provide an important reference for the development of compression equipment and the understanding of compression molding product characteristics. |
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| Keywords: | straw optimization forage multi-frequency rapid compression molding quadratic regression rotary combination test relaxation ratio |
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