机收残膜混合物水洗清选装置的研究与试验
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摘要
机械回收后的残膜与棉秆等杂质缠绕严重是导致其难以被回收利用的重要原因,将残膜分离是解决该问题的关键。为此,提出了机收残膜混合物水洗分离的方案并对其工作原理进行分析,确定了方案的可行性。通过单因素试验确定了影响显著的因素,并采用BBD试验法建立了分离率与显著因素物料破碎尺寸、水压和喷头角度的三元二次回归模型。对模型进行响应面分析寻优,得到分离装置最佳结构和工作参数。经过台架试验验证,其分离率达到75.8%,证明了模型的正确性,为后续的研究和改进提供了理论基础。
The most important reason that plastic film cannot be recovered after mechanical recovery is residual film intertwined seriously with cotton rod and other impurities,the residual membrane separation is the key to solve this problem.In this paper,plastic film mixture washing separation and the principle of the scheme is analyzed,and the feasibility of the project was determined. Through the single factor experiment,the influential factors were determined,and the three factor and two regression model of separation rate and significant factor,material crushing size,water pressure and nozzle angle were established by BBD test method. The response surface analysis of the model is carried out to obtain the optimum structure and operating parameters of the separation device. The bench test shows that the separation rate is 75.8%,which proves the correctness of the model and provides a theoretical basis for further research and improvement.
The most important reason that plastic film cannot be recovered after mechanical recovery is residual film intertwined seriously with cotton rod and other impurities,the residual membrane separation is the key to solve this problem.In this paper,plastic film mixture washing separation and the principle of the scheme is analyzed,and the feasibility of the project was determined. Through the single factor experiment,the influential factors were determined,and the three factor and two regression model of separation rate and significant factor,material crushing size,water pressure and nozzle angle were established by BBD test method. The response surface analysis of the model is carried out to obtain the optimum structure and operating parameters of the separation device. The bench test shows that the separation rate is 75.8%,which proves the correctness of the model and provides a theoretical basis for further research and improvement.
引文
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[2]张佳,张宇涛,董黎明,等.国内残膜回收机械研究现状及发展趋势[J].农业科技与装备,2014(4):29-30,33.
[3]田多林,王吉奎.对新疆农田残膜回收现状及治理措施的探析[J].农技服务,2016(4):224.
[4]刘红,杨先海,黄朋涛,等.废旧塑料薄膜混合物风选数研究[J].山东理工大学学报:自然科学版,2012,26(3):60-63.
[5]方新磊.烟丝振动分选筛动态特性研究[D].郑州:郑州大学,2012.
[6]赵娜,于传瑞,赵波,等.静电分离催化裂化油浆中固体颗粒及其组成的研究[J].石油化工,2015(10):1218-1223.
[7]汪家琼,蒋万明,孔繁余,等.固液两相流离心泵内部流场数值模拟与磨损特性[J].农业机械学报,2013(11):53-60.
[8]Kaur D,Garg S K.Flotation-cum-sedimentation system for skin and seed separation from tomato pomace[J].Journal of food engineering,2005,71(4):341-344.
[9]Fujisaki K.Enhancement of settling tank capacity using a new type of tube settler[J].Water Science&Technology A Journal of the Interational Association on Water Pollution Research,2010,62(6):1213-1230.
[10]Kunihiro Hori,Masami Tsunekawa,Masatsune Ueda,et al.Development of a New Gravity Separator for Plastics—a Hybrid-Jig[J].MATERIALS TRANSACTIONS.2009,50(12):2844-2847.