制粒技术理论与实践专题讲座ppt.ppt

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1、PELLETING TECHNOLOGY制粒技术-1,Myths vs Facts理论与实践,The“BIG”PelletMill at K-State堪萨斯州某加工厂内的大型制粒机,ISSUES IN PELLETING?有关制粒的话题？,PELLET QUALITY,VS,PRODUCTION RATE,颗粒质量与产量,PELLET QUALITY,IS:,the ability of pellets to take handlingwithout generating excessive fines.颗粒质量是指颗粒抵抗各种处置而不产生过多细粉的能力,PELLET THROUGHPUTI

2、S:,the ability to feed the birds!颗粒产量是指能提供给畜禽饲料的数量,Formulation配方,Grind粉碎,Die压模,Conditioning调质,Dry/Cool冷却器,颗粒质量的影响因素,PELLET QUALITY 颗粒质量FORMATION 配方,Pellet Quality is Primarily Established in the Conditioner,Not in the Pellet Die.颗粒质量形成的第一位点是制粒机的调质器，而不是制粒机压模,Formulation 配方,Grind 粉碎,Die 压模,Conditionin

3、g 调质,颗粒产量的影响因素,DIE RESISTIVE FORCE压模的摩擦阻力,压辊挤压力,压模的表面反力,饲料锲入压辊区,防滑阻力,压辊旋转方向,工作区,挤压区,成形区,压模旋转方向,颗粒,压模,饲料,压辊装配,MAJOR FACTORS AFFECTINGPRODUCTION RATE影响制粒机产量的主要因素,FORMULATION配方,Diet formulation is based on meeting the nutrientrequirements of the animal at the least possible cost per ton.日粮配制是以最低可能的成本满足

4、畜禽对养分需要Little consideration for:很少考虑以下问题：-Pellet Quality 颗粒质量-Production Rate 生产率,CONDITIONING:调质：,.any modification or addition made to the mashafter it leaves the mixer and before it reaches the pellet die chamber.调质是指粉状饲料离开混合机直至到达制粒机压制室前所做的任何改变或添加操作,MAJOR FACTORS AFFECTINGPRODUCTION RATE影响生产率的主要因

5、素,The level of steam conditioning possible depends on the:蒸汽调质的程度取决于：配方水分含量 Formula moisture content 配方中油脂含量 Formula fat/oil content 蒸汽质量 Steam quality 压模阻力和状况 Die resistance and condition 压辊表面和状况 Roll surface and condition,MAJOR FACTORS AFFECTINGPRODUCTION RATE影响生产率的主要因素,As a rule,the higher the le

6、vel of conditioning,the higher the throughput and pellet quality.通常来讲，调质的越充分制粒机产量越高，颗粒质量也越好。,Condensed steam acts as a lubricant(up to a point!)冷凝蒸汽起到润滑剂的作用（至关重要！）,STEAM CONDITIONING蒸汽调质,Steam has the ability to carry and transfer both heat and moisture efficiently through the process of“CONDENSATIO

7、N”.蒸汽通过凝结过程，能高效传递热与水分,STEAMCONSIDERATIONS!蒸汽需考虑的事项,-质量？Quality?保温处理*Insulation汽水分离器*Traps阀*Valves-压力？Pressure?压力要求稳定*Constant not Fluctuating蒸汽的热值变异要小*Makes little difference in heat content.,CONDITIONING LTERNATIVES调质的种类,Steam Addition-常压蒸汽Atmospheric.加压蒸汽-压力蒸汽Pressure.Water Addition.加水Expanding.膨化

8、Compacting.压实Re-Pelleting.二次制粒Ripening.熟化,带夹套的调质器,调质器方案选项CONDITIONER OPTIONS滞留时间RENTENTION TIME,调质器容积(单层及双层)Conditioner Volume(single pass vs.double pass)叶片角度Pick(paddle)Angle.调制器主轴转速 Shaft Speed.,0,15,45,75,90,叶片角度Pick Angle(degrees),叶片角度调整 PADDLE ANGLE ADJUSTMENT,CONDITIONER VOLUME调质器的容积,VS,Large Length to Diameter Ratio大长度/直径比,Small Length toDiameter Ratio小长度/直径比,THANK S!,