【摘 要】
：
Coating of particulate materials in fluidized beds is a widely used technique to eliminate particle agglom-eration,provide slow release of an active substance,or protect active ingredients.When thin polymer shells are applied on a particle surface,it is i
【机 构】
：
Department of Processes and Apparatuses of Chemical Technology,Ivanovo State University of Chemistry
论文部分内容阅读
Coating of particulate materials in fluidized beds is a widely used technique to eliminate particle agglom-eration,provide slow release of an active substance,or protect active ingredients.When thin polymer shells are applied on a particle surface,it is important to determine the process parameters that provide coating uniformity.In this study,the degree of coverage,defined as the fraction of the coated surface of the particles,is proposed as a quantitative criterion of coating uniformity.A new model for the batch fluidized-bed coating process is presented.The model allows prediction of the function of particle dis-tribution according to the degree of coverage at a given process time and thereby enables assessment of coating uniformity.An algorithm for the numerical solution of model equations for a batch fluidized-bed coater is described.The influences of the main process parameters on the coating uniformity were shown.
其他文献
浮式液化天然气生产储卸装置(FLNG)作为一种集成海上天然气、凝析油的液化、储存和装卸为一体的新型FPSO装置,目前世界上多个国家都已开展对FLNG的研究,本文主要针对FLNG的一种改进型刚性卸载臂液货卸载系统进行分析研究,为今后开展FLNG项目设计工作提供参考.
Screw conveyors are widely employed in industrial fields for conveying bulk materials.The shearer drum which uses the screw conveying principle is responsible for excavation and conveying coal particles onto the chain conveyor.Screw conveyor performance i
乘风斩浪、策马新程,国务院近日印发《“十四五”现代综合交通运输体系发展规划》.这是交通运输站在新起点上的第一个五年规划,擘画了交通运输美好蓝图,也为全体交通人指明了奋斗方向.
Vibrating separation is a significant method for liquid-solid separation.A typical example is the vibrating screen to dewater wet granular matter.The properties of granular matter and the vibrating parameters significantly affect the separation efficiency
柔性植被广泛分布于海岸带与内河河岸,其具有良好的消浪效果,十分适合作为生态护岸材料,因此研究在该植被存在时波浪作用下岸滩冲淤演变规律的影响具有重要意义.本文针对规则波作用下对柔性植被沙质岸滩变化的影响,通过物理模型实验,得到不同水深条件、波高、周期等波浪要素情况下岸滩冲淤的模拟结果.实验结果表明,改变水深、波高、波周期对岸滩剖面变化均有影响.其中,槽—坝位置分别随着水深增加、波高减小趋向岸侧迁移,滩肩高度分别随着波高减小、波周期增大而变高.
During twin screw granulation (TSG),small particles,which generally have irregular shapes,agglomer-ate together to form larger granules with improved properties.However,how particle shape impacts the conveying characteristics during TSG is not explored no
本文从六圩河口水域交通流特点、航道情况、海事主管部门的相关航行要求等多方面分析了船舶在该水域的引航风险因素,综合内外部条件,并切实结合长江航行特点,深入地研究各种风险因素存在的根本原因,并提出了所需解决问题的对策.
Effects of some important structural parameters,i.e.slat pitch,and layout position,on dynamic forces acting on the baffles were examined in the fluidized bed of FCC particles operating under different super-ficial gas velocities.The experimental baffles w
我国西北地区作为煤炭产业富集区域,区域内的煤炭的过量开采导致了大量地表裂缝的产生.因此,地表裂缝的修复对煤炭开采过后的环境修复具有重大的现实意义.采用在紫外分光光度计和多参数分析仪等方法,研究了巨大芽孢杆菌在设定试验温度下其浓度和脲酶活性的生长趋势,选取微生物富集区间进行试样的制备.以无水氯化钙为碳源和无机盐来源,利用研究区黄土、煤矸石和标准砂的不同混合方式以及纯土、纯砂等作为土体裂隙充填物质,利用尿素作为氮源,开展一系列的MICP纤维加筋修复土体裂隙的试验,包括剪切强度对比试验,无侧限抗压强度对比试验,
专业技术人才是推动交通运输高质量发展的重要战略资源,教育培训有助于提升我国海员综合素质.本文从分析海员教育培训发展现状入手,针对我国一线海员教育培训现状,设计和发放问卷进行调查,通过整理分析,从组织者、培训者、参与者、监督者四个方面,对我国海员教育培训如何进一步发展提出发展思路.