真空冷冻干燥设备节能改进的探讨

主要介绍了真空冷冻干燥设备能耗的概况及主要耗能系统,探讨了在设备能耗上可改进的领域和方法。     

真空冷冻干燥机的开发现状与发展趋势

简述了真空冷冻干燥设备的工作原理及其组成 ,详细探讨了国内外真空冷冻干燥设备的开发现状、存在的问题及发展趋势     

微波真空冷冻干燥中的典型问题初探

主要分析了微波真空冷冻干燥中容易出现的干燥不均匀、微波泄漏、制冷量不足、真空系统的抽真空能力不足以及整个系统的安全操作问题等典型的理论、工艺和设备问题,并提出了解决这些问题相应的设计、工艺、合理的操作规程等基本技术方法和手段,也为改进和优化微波真空冷冻干燥工艺和设备提供了依据。     

微波冷冻干燥技术的发展及关键技术研究

微波冷冻干燥是将高效的微波辐射加热技术和真空冷冻干燥技术相结合的极具应用价值的一项新技术。文章综述了国内外微波冻干研究的进展情况,并对其中辉光放电、加热均匀性、控制策略优化以及干燥终点判别等问题进行分析并提出解决这些问题相应的技术方法和手段,为改进和优化微波真空冷冻干燥设备提供了理论依据和技术支持。     

真空冷冻干燥技术在生物制药种的应用

近些年来,我国生物制药行业的发展已经达到了顶峰,生物制药水平也越来越高,真空冷冻干燥技术在生物制药中也得到了广泛应用。就真空冷冻干燥技术进行分析,探讨出真空冷冻技术在我国生物制药当中的应用。对真空冷冻干燥的过程进行探讨,以此来提升我国的真空冷冻干燥技术,把真空冷冻干燥技术科学合理地融入到我国的生物制药中,发挥真空冷冻干燥技术的最大功效,从而提高我国的生物制药水平,保障人们的生活用药,解决好我国的民生问题,促进我国经济发展。     

专利介绍

真空冷冻干燥设备;一种低温真空干燥机;     

我国真空冷冻干燥设备的发展趋势及其在石化领域的应用前景

本文主要介绍了真空冷冻干燥机的最近发展，及真空冷冻干燥技术在化工石油领域的应用。     

具有全自动（半自动）进出料等功能最新型真空冷冻干燥机研发报告

主要介绍了上海千山远东制药机械有限公司最新研发的具有全自动（半自动）进出料功能真空冷冻干燥机的概况，从四个方面描述了在功能、质量上的提高，使国产真空冷冻干燥机真正符合新版GMP要求。     

高真空蒸馏节能技术在我厂的应用

主要介绍了真空蒸馏系统工艺流程及主要设备结构，我公司在应用高真空蒸馏节能技术中出现的各种问题和部分项目改进的效果，并提出了今后的改造方向。通过三年的实践证明：该技术的节能效果比较明显，不仅能达到节能降耗，促进生产的目的，而且为氨碱系统稳产高产创造了良好的条件。     

真空冷冻干燥过程中几个影响因素的探讨

以某混合培养基使用 VIRTIS真空冷冻干燥机为例 ,探讨预冻温度、水汽凝结器温度、真空度、制品的温度控制四因素对真空冷冻干燥的影响。     

固态食品常压吸附流化冷冻干燥的研究

至今为止,冷冻干燥技术得到应用的只有真空冷冻干燥一种,本文提出了常压吸附剂流化冷冻干燥,并具体阐述了数学模型和实验装置。通过与真空冷冻干燥进行比较,认为常压吸附流化冷冻干燥值得进一步深入研究,具有发展和应用前景。     

ATMOSPHERIC FREEZE-DRYING PART 1 : DESIGN,EXPERIMENTAL INVESTIGATION AND ENERGY-SAVING ADVANTAGES

This paper describes the experimental study of a new process for freeze-drying based on a fluidized bed of dry adsorbent working at atmospheric pressure. Process feasibility has been demonstrated. The kinetics of dehydration have been established systematically for thin-sliced potatoes. A comparison has been carried out with vacuum freeze-drying. Processing time is longer than under vacuum freeze-drying, but energy savings of 35% can be expected from a continuous duty facility.     

A STUDY OF THE PRIMARY PHASE OF FOOD FREEZE-DRYING IN VACUO

In the development of a novel freeze-drying technique in a fluidized bed at atmospheric pressure, a parallel study was undertaken using a conventional vacuum equipment. Two kinetically distinct phases were observed during freeze drying of representative Pood samples:

(1) a period during which the rate of drying was constant and (2) a second period during which the drying rate sufferedcontinual reduction. This paper focused attention on the primary drying period which corresponded with the kinetics of sublimation of pure     

Modeling of Vacuum Desorption in Freeze-Drying Process

A mathematical model of multicomponent vacuum desorption, which occurs in vacuum freeze-drying process, was developed. In freeze-drying porous biomaterials and pharmaceuticals are considered and the vacuum freeze-drying process, especially the moisture desorption in its final stage, is investigated. In this article, the drying with conductive heating and constant contact surface temperature was considered. Pressure drop is taken into account in the model formulation but was neglected in process simulation because of thin material layers undergoing freeze-drying. Model equations were solved by numerical method of lines. Moisture content and temperature distributions within the drying material were predicted from the model as a function of drying time.     

Modeling of Vacuum Desorption in Freeze-Drying Process

Abstract

A mathematical model of multicomponent vacuum desorption, which occurs in vacuum freeze-drying process, was developed. In freeze-drying porous biomaterials and pharmaceuticals are considered and the vacuum freeze-drying process, especially the moisture desorption in its final stage, is investigated. In this article, the drying with conductive heating and constant contact surface temperature was considered. Pressure drop is taken into account in the model formulation but was neglected in process simulation because of thin material layers undergoing freeze-drying. Model equations were solved by numerical method of lines. Moisture content and temperature distributions within the drying material were predicted from the model as a function of drying time.     

黑加仑真空冷冻与微波真空联合干燥工艺研究

以黑加仑为原料,对其进行了真空冷冻与微波真空联合干燥工艺的研究。结果表明：先真空冷冻后微波真空干燥（FDMV）的组合方式是可行的;联合干燥合理工艺参数为：微波功率1．34kW。绝对压力11kPa,转换含水率为20％（wb）;通过试验验证,联合干燥生产的脱水黑加仑的感官品质和营养成分接近真空冷冻干燥,联合干燥方式对节省干燥时间和降低能耗是有效的。     

丁二磺酸腺苷蛋氨酸冻干工艺研究

为建立合适的丁二磺酸腺苷蛋氨酸冻干工艺,采用真空冷冻干燥法,对丁二磺酸腺苷蛋氨酸冻干条件如共晶点、装量、预冻程序、升华温度、升华真空度及解吸干燥温度等进行研究。结果显示：冻干工艺：装量为液面高度小于10 mm,预冻程序为预冻至-40℃,然后回温至-10℃,再降至-50℃,在真空度10～30 Pa,-25℃下升华,35℃解吸干燥。此工艺制备的丁二磺酸腺苷蛋氨酸外观好,产品质量符合国家标准。     

冷冻干燥的工艺流程及其应用

阐述了冷冻干燥工艺的原理及特点，介绍了冷冻干燥设备的组成以及冷冻干燥的工艺流程，展望了冷冻干燥工艺的应用前景。     

超声雾化喷涂保色牡丹花冻干试验研究

将保色溶液超声雾化并对牡丹花进行喷涂护色处理,对处理过的牡丹花进行真空冷冻干燥,研究了保色溶液组成、雾化喷涂时间等指标对干花品质的影响。结果表明：超声雾化喷涂保色液具有明显的保色、保形作用,冷冻干燥后牡丹干花的颜色和形状保持得很好。