流化床喷雾造粒的研究进展

对流化床喷雾造粒技术进行了简述,对其颗粒成长机理、造粒影响因素和造成聚变失稳因素进行了归纳,并就其发展前景作了展望。     

碳酸钾流化床造粒

为适应彩色显像管玻璃壳生产的需要,本文介绍采用流化床制得粒状碳酸钾产品。提高碳酸钾产品的质量,及市场竞争力。     

旋涡压力喷嘴及其在流化床喷雾造粒中的应用

研制了一种旋流室为半空心球形的旋涡压力喷嘴 ,具有结构紧凑、零部件少、旋流效率高、高速流道短、摩擦损耗小、雾炬张角大等优点。应用于流化床喷雾涂布造粒 ,在节省动力和单喷嘴覆盖面积大从而可减少喷嘴数量等方面显示出优越的性能。     

尿素塔式造粒与流化床造粒的比较

论述了尿素塔式造粒与流化床造粒的原理、工艺流程及主要设备，并从工艺流程、投资、环保、能耗及产品性能方面进行比较。     

流化床转鼓造粒工艺

该译文主要论述流化床转鼓造粒(FDG)工艺原理、主要特点、实际应用结果。     

新型流化床造粒器的研究

本文对新型流化床造粒器进行了研究。通过对尿素、氯化钙等物料进行了冷态和热态涂敷造粒实验,确定了适合于涂敷造粒的流化床和分布板的形式,并成功地进行了造粒中试实验。对尿素、氯化钙等物料,单喷嘴产量达到９０ｋｇ／ｈ。     

流化床造粒工艺及特点

流化床造粒工艺及特点姚光前（海南富岛化学工业公司，海南东方，５７２６００）收稿日期：１９９６－１２－２３。海南大化肥工程是年产３０万ｔ合成氨、５２万ｔ尿素的国家又一大化肥工程。其中合成氨采用ＩＣＩ工艺，尿素采用斯纳姆氨汽提工艺，尿素装置的造粒部分是引...     

Heat and Mass Transfer in Process of Fluidized-Bed Spray Granulation

This article presents a mathematical model of heat and mass transfer for the process of fluidized-bed spray granulation, which can be applied in the analysis of bed temperature profile, temperature and humidity of outlet gas and moisture content of particles. Effects of operation parameters on the batch granulation are investigated. The theoretical calculation agrees reasonably well with the experimental data.     

流化床喷雾造粒过程的传热传质

This article presents a mathematical model of heat and mass transfer for the process of fluidized-bed spray granulation, which can be applied in the analysis of bed temperature profile, temperature and humidity of outlet gas and moisture content of particles. Effects of operation parameters on the batch granulation are investigated. The theoretical calculation agrees reasonably well with the experimental data.Keywords fluidized-bed spray granulation, mathematical model, heat and mass transfer     

流化床喷雾造粒颗粒包覆过程的因素研究

以玻璃珠为原始晶种分别在流化床喷雾造粒器中进行碳酸钾涂布造粒,考察了床层温度、料液流率、料液浓度和流化气速对颗粒粒径和体积增长的影响;结果表明,料液浓度越高。流化气速越低,其生长速率越大,而床层温度则呈现一定的非单调性。     

Control of Particle Size and Porosity in Continuous Fluidized-Bed Layering Granulation Processes

Particle formulation processes such as continuous fluidized-bed layering granulation (FBLG) are widely applied in chemical, food, and pharmaceutical industries. Particle size and particle porosity are important product properties in FBLG. In this paper, a new concept is presented for the simultaneous control of both properties. The new concept allows stable process operation, automatic adjustment of the desired product properties, and rejection of unforseen disturbances.     

流化床喷雾造粒技术进展

本文介绍了流化床喷雾造粒技术,包括造粒机理、操作方式、影响因素等。流化床喷雾造粒是将溶液、悬浮液或熔融液喷雾到已经干燥或不完全干燥颗粒的流化床床层内,在同一设备内一步完成蒸发、结晶、干燥或化学反应的造粒过程。流化床造粒操作对颗粒的尺寸、形状要求不高,所得到的产品无结块、具有良好的流动性能。与其他传统的造粒方法相比,流化床造粒具有工艺流程简单、设备装置紧凑、投资省、生产强度大等优点,越来越引起人们的关注。     

氰尿酸造粒技术研究

传统的造粒机生产技术不仅产量低,而且造出的颗粒硬度低,堆积密度往往达不到客户的要求,氰尿酸干法辊压造粒技术主要依靠外部加压的方式,使物料通过2个相对旋转辊轴间隙,强制压缩成片、块状,在辊压过程中,物料的实际密度能够增大1.5～3倍,从而使颗粒剂达到了一定的强度和堆积密度,大大地提高了氰尿酸颗粒剂的产量,改善了氰尿酸颗粒剂的质量。     

橡胶促进剂CBS挤出造粒的实验研究

对橡胶促进剂CBS进行湿法挤出造粒实验,测取颗粒崩溃强度、粉化率和熔点,比较黏合剂含量对这些性能的影响程度,以摸索工艺路线和配方,为今后的颗粒状促进剂系列产品工业化生产的流程设计提供依据。     

Granulation time in fluidized bed granulators

Size enlargement of particles in fluidized bed granulation involves mixing of particles with a binder liquid to form larger wet granules and drying them to form dry granules. Identification of the time for completion of granulation process is critical as further fluidization of dry granules is providing extra energy for their attrition. Monitoring the bed pressure drop and bed temperature of a batch fluidized bed granulator with time can provide information on the time for completion of the granulation process. Experimental observations on granulation time and size of granules in a lab-scale batch fluidized bed granulator are presented. Model based equations are developed for the estimation of granulation time and size of granules.     

玻璃配合料粒化的研究现状

通过国内外玻璃配合料粒化现状研究分析,以及配合料粒化优缺点探讨,表明玻璃配合料粒化可以改善配合料传热,减少粉尘飞扬,节约能源,符合国家节能环保政策。