Standard Type Experimental Vacuum Freeze Dryer

Sublimation is when a solid (ice) changes directly to a vapor without first going through a liquid (water) phase. Thoroughly understanding the concept of sublimation is a key building block to gaining knowledge ofStandard-Type-Experimental-Vacuum-Freeze-Dryer.
Sublimation is a phase change and heat energy must be added to the frozen product for it to occur.
Sublimation in the freeze drying process can be described simply as:
FREEZE - The product is completely frozen, usually in a vial, flask or tray.
VACUUM - The product is then placed under a deep vacuum, well below the triple point of water.
DRY - Heat energy is then added to the product causing the ice to sublime.FREEZE DRYING EQUIPMENT
The main components of freeze drying equipment are:Refrigeration SystemVacuum SystemControl SystemProduct Chamber or ManifoldCondenser
The refrigeration system cools the (ice) condenser located inside the freeze dryer. The refrigeration system can also be employed to cool shelves in the product chamber for the freezing of the product.
The vacuum system consists of a separate vacuum pump connected to an airtight condenser and attached product chamber.
Control systems vary in complexity and usually include temperature and pressure sensing ability. Advanced controllers will allow the programming of a complete "recipe" for freeze drying and will include options to monitor how the freeze drying process is progressing. Choosing a control system for the freeze dryer depends on the application and use (i.e. lab vs. production).
Product chambers are typically either a manifold with attached flasks, or, a larger chamber with a system of shelves on which to place the product.
The purpose of the condenser is to attract the vapors being sublimed off of the product. Because the condenser is maintained at a lower energy level relative to the product ice, the vapors condense and turn back into solid form (ice) in the condenser. The sublimated ice accumulates in the condenser and is manually removed at the end of the freeze drying cycle (defrost step). The condenser temperature required is dictated by the freezing point and collapse temperature of the product. The refrigeration system must be able to maintain the temperature of the condenser substantially below the temperature of the product.
In shelf freeze dryers, the condenser can be located inside the product chamber (internal condenser) or in a separate chamber (external condenser) connected to the product chamber by a vapor port.
Manifold freeze dryers rely on ambient conditions to provide the heat of sublimation to the product. This heat input does not melt the product because an equivalent amount of heat is removed by vaporization of the solvent. Advanced shelf freeze dryers can provide a heat source to control/expedite the drying process and they can also employ the refrigeration system to allow freezing of product inside the unit.
Freeze dryerscan be informally classified by the type of product chamber: (1) Manifold dryers where the product is typically pre-frozen & in flasks (2) Shelf dryers where the product is placed in a tray or directly on a shelf (3) Combination units with both drying options.AttributesFREEZE DRYING EQUIPMENT
The main components of freeze drying equipment are:Refrigeration SystemVacuum SystemControl SystemProduct Chamber or ManifoldCondenser
The refrigeration system cools the (ice) condenser located inside the freeze dryer. The refrigeration system can also be employed to cool shelves in the product chamber for the freezing of the product.
The vacuum system consists of a separate vacuum pump connected to an airtight condenser and attached product chamber.
Control systems vary in complexity and usually include temperature and pressure sensing ability. Advanced controllers will allow the programming of a complete "recipe" for freeze drying and will include options to monitor how the freeze drying process is progressing. Choosing a control system for the freeze dryer depends on the application and use (i.e. lab vs. production).
Product chambers are typically either a manifold with attached flasks, or, a larger chamber with a system of shelves on which to place the product.
The purpose of the condenser is to attract the vapors being sublimed off of the product. Because the condenser is maintained at a lower energy level relative to the product ice, the vapors condense and turn back into solid form (ice) in the condenser. The sublimated ice accumulates in the condenser and is manually removed at the end of the freeze drying cycle (defrost step). The condenser temperature required is dictated by the freezing point and collapse temperature of the product. The refrigeration system must be able to maintain the temperature of the condenser substantially below the temperature of the product.
In shelf freeze dryers, the condenser can be located inside the product chamber (internal condenser) or in a separate chamber (external condenser) connected to the product chamber by a vapor port.
Manifold freeze dryers rely on ambient conditions to provide the heat of sublimation to the product. This heat input does not melt the product because an equivalent amount of heat is removed by vaporization of the solvent. Advanced shelf freeze dryers can provide a heat source to control/expedite the drying process and they can also employ the refrigeration system to allow freezing of product inside the unit.
Freeze dryers can be informally classified by the type of product chamber: (1) Manifold dryers where the product is typically pre-frozen & in flasks (2) Shelf dryers where the product is placed in a tray or directly on a shelf (3) Combination units with both drying options.Parameter
Technical Parameters
freezedryingarea:0.12
material traydia.:Ф240mm
No. of tray:4pcs
trayspacing:70mm
cold traptemperature:≤-56C,optional≤-80ºC
cold trapdept:140mm
cold trapdia.:Ф215mm
icecollecting capacity:3-4kg/24h
pumping speed:2L/S
ultimatevacuum:≤5pa
power:970w
weight:41kg
overall dimensions:615x450x370mm
-80ºC overall dimensions:850x680x405mm
drying chamber size:Ф260x430mm
cooling mode:wind cooled
defrosting mode:air cooled
shipping weight:1.2L(thickness 10mm)
Optional accessories and functions
·cold trap temperature -80ºC
·vacuum pump anti-returned oil device
.cold trap electrical heat defrosting
·oil mist filter system
·imported vacuum pump
·non-standard customizedRange
Suitable for freeze-drying bulk(liquid, paste or solidity) conventional materials.Related users
Related users (part)
Tsinghua University Peking University Huazhong Agricultural University
Beihang University, Chinese Academy of Medical Sciences, Nanjing University of Science and Technology
Beijing University of Science and Technology China Agricultural University South China University of Technology
Beijing Institute of Technology Nanjing University of Technology Xi'an University of Technology
Sichuan University Hunan University Qiqihar University
Tianjin University Lanzhou University Xiamen University
Tongji University Nanjing University Shenyang Pharmaceutical University
Zhejiang Sci-Tech University Zhongshan University Wuhan University
Zhejiang University Hunan University of Science and Technology Wuhan University of Technology
University of Science and Technology of China, Guangdong Ocean University Hubei Hong Pharmaceutical Co., Ltd.
Civil Aviation University of China Shenyang University of Technology Institute of Process Engineering, Chinese Academy of Sciences
Huazhong University of Science and Technology Beijing Orchard Research Institute Changsha Qixi New Material Technology Co., Ltd.
Beijing University of Chemical Technology Shandong Daguan Pharmaceutical Technology Co., Ltd. Dongguan City Original Ecological Biotechnology Co., Ltd.
Guizhou Institute of Biotechnology Sanming Hezhong Biotechnology Co., Ltd Harbin Children's Pharmaceutical Factory
National University of Defense Technology Changchun Hengchen Biotechnology Co., Ltd. Jinan Hengjian Pharmaceutical Technology Co., Ltd.
Institute of Chemistry, Chinese Academy of Sciences Dongguan Lujian Biotechnology Co., Ltd. Institute of Materia Medica, Chinese Academy of Medical Sciences
South China Sea Fisheries Research Institute Shanghai Institute of Materia Medica, Chinese Academy of Sciences Jiangsu Ouwei Pharmaceutical Co., Ltd.
Ministry of Agriculture Planning and Design Institute Shenzhen Jianyuan Pharmaceutical Technology Co., Ltd. Hangzhou Baicheng Pharmaceutical Technology Co., Ltd.
China Institute of Metrology Science Dongguan Sanwei Biotechnology Co., Ltd. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences
Liaoning Wanjia Pharmaceutical Technology Co., Ltd. Suzhou Global Chromatography Co., Ltd. China Food and Drug Testing Institute Food Institute