环模式成型机压缩水稻秆成型工艺参数优化  

Optimization of technique parameters of annular mould briquetting machine for straw briquette compressing

作　　者：陈树人[1] 段建[1] 姚勇 蒋晓霞[1] 蒋成宠 

机构地区：[1]江苏大学现代农业装备与技术教育部重点实验室,镇江212013 [2]江苏圆通农机科技有限公司,镇江212325

出　　处：《农业工程学报》2013年第22期32-41,共10页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家农业科技成果转化资金资助项目(2013GB2C100182);江苏省农业科技支撑计划资助项目(BE2013412);江苏省高校优势学科建设工程资助项目(苏财教(2011)8号);丹阳市科技创新培育计划资助项目(CX2012033);江苏大学科研立项资助项目(2012A105)

摘　　要：为了确定环模式成型机压缩水稻秸秆最佳的成型工艺参数,该文以水稻秸秆为原料,利用9JYK-2000A型环模式成型机进行压缩成型,寻求工作参数对环模式成型机压缩水稻秸秆成型影响规律和优化工艺参数组合。采用四因素五水平二次回归正交旋转中心组合设计试验方法,以含水率、成型温度、模辊间隙和主轴转速为影响因子,以成型压块的松弛密度和抗破碎性为评价指标。利用Design-expert8.0.6的回归分析法及响应面分析法,建立并分析了4个因子对评价指标影响的数学模型。结果表明：当参数组合含水率为17.5%-27.1%、成型温度为81.9℃-88.1℃、磨辊间隙为2.49-3.78 mm、主轴转速为157.6-186.5 r/min条件下,成型压块的松弛密度大于1.0 g/cm3,成型压块的抗破碎性大于65%;各因素对松弛密度贡献率的主次关系为：主轴转速〉磨辊间隙〉含水率〉成型温度,各因素对抗破碎性贡献率的主次关系为：含水率〉主轴转速〉磨辊间隙〉成型温度。研究可为环模式成型机压缩水稻秸秆成型提供一定理论依据和技术支撑。China is a large agricultural nation with abundant straw resources, and the crop straw is regarded as a kind of precious biology resource. Recently, the straw briquetting technology was found to be an effective way to solve the low comprehensive utilization of straw. The annular mould briquetting machine has become the mainstream equipment among lot of straw curing equipment, because of its lower energy consumption, wear resistance and high productivity, etc. However, the present biomass compression molding process research mainly concentrates on the experiments and theories of corn stalks, cotton stalks, wheat straw, and wood chips molding instead of rice straw molding, especially by using annular mould briquetting. A significant feature of molding briquette is the physical properties that directly determine the transportation, usage requirements, and the storage condition of compression moldings. Both the relaxed density and the durability are the indexes to measure the physical properties of molding briquette. This paper introduced the process of the straw＇s compressing by using a 9JYK-2000A type of annular mould. The rice straw was taken as material in the experiments and the influence of the key work parameters on straw＇s compressing was analyzed. Besides, the optimal parameter combination was obtained in the experiments. A central composite rotatable orthogonal experimental design of response surface methodology（RSM） was employed to find the optimum technical parameters. Relaxed density and crush resistance were selected as responses, and the material moisture content, operation temperatures, clearances between rolls and die, and screw rotary speed were selected as input variables with five levels respectively. A design-expert 8.0.6 regression analysis method and a response surface method were applied to analyze the regression equation of relaxed density and crush resistance. In addition, the mathematical model has been established to analyze the effect of four factors on test indexes. The experimen

关 键 词：优化 压缩成型 水稻秸秆 环模式成型机 工艺参数 

分 类 号：TK6[动力工程及工程热物理—生物能] S261.1[农业科学—农业水土工程]