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Freeze drying refers to the process of removing water or other solvents from frozen biological products by sublimation. Sublimation refers to the process in which a solvent, such as water, like dry ice, changes directly from a solid state to a gaseous state without going through a liquid state. The product obtained by freeze-drying is called lyophilizer, and this process is called lyophilization.
The core technology of food freeze-drying machine is freeze-drying, that is, freeze-drying. Freeze-drying is to freeze a substance that contains a lot of water into a solid by cooling it in advance. Then under vacuum conditions, the water vapor is directly sublimated from the solid, and the substance itself remains in the frozen ice shelf, so that the dried product does not lose the original solid skeleton structure, maintains the original shape of the material, and the product is restored Excellent water quality. The purpose of freeze-drying is to store moist materials, usually an aqueous solution containing microbial tissue, or an aqueous solution containing no microbial tissue. After the product is frozen, it is placed under a low water pressure. At this time, it contains the sublimation of ice, which directly changes from a solid state to a vapor state without melting. Compared with other drying methods, it avoids chemical, physical and enzymatic changes. Thus, the physical properties of the packaged product are not easily changed.
Dry warehouse/Plate layer
No dead Angle, surface roughness ≤0.5 m, meets the requirement of sterility
The storehouse body, plate layer and hose are inspected in multiple procedures to ensure no leakage
Rotary door lock design, easy to open (automatic hydraulic door lock optional)
The heating and cooling of the plate layer are controlled by PLC, and the temperature control precision is ≤±1ºC
Plate heating mode is optional: constant temperature/stage heating
2.Cold trap
All Su304/316L stainless steel manufacturing
A variety of water traps structure optional, flexible layout, in line with the actual
space requirements
Argon arc welding, one - time inside and outside molding, beauty is not smooth,
no leakage of pipeline
3.Vacuum system
Adopt pre-pumping and maintenance dual system design, each unit can be used alone, to ensure the stability and durability of the system
Multistage vacuum Roots pump is adopted to improve the pumping rate and limit vacuum ≤1Pa
4.Refrigeration system
Adopt high quality imported compressor unit, accurately calculate cooling capacity demand, energy saving and environmental protection
Bipolar piston/cryogenic screw compressors are optional to meet different refrigeration requirements
The system is equipped with multiple protection functions: high pressure protection, low pressure protection, differential oil pressure protection, etc., to ensure the stable operation of the unit
Multiple compressor units can be connected in parallel with adjustable refrigerating capacity and high efficiency and energy saving
The system adopts compound refrigerant, which meets the international environmental protection requirements
5. Circulation system
Electric/steam heating is optional
The indirect heating method uses circulating pump and plate heat exchanger to provide uniform heat for the plate layer
High stability medium is selected to ensure that the heating temperature meets the customer's requirements
6.Control system
The lyophilizer can be controlled manually or automatically with multiple passwords and electronic signatures
Friendly man-machine interface, detailed display of the working state of the equipment
PLC control, constant temperature heating and phase heating control optional
There is no interlocking protection and automatic fault alarm function for the power source for lyophilization operation
Can be connected with the computer, remote real-time monitoring equipment run
Automatic record and storage of lyophilized data and lyophilized curve, with data storage function of power failure
|
Mold |
Power (kw) |
Size (mm) |
energy |
remark |
|
2.5m²~25kg |
10 |
1800*1400*1600 |
Electric heating |
Manually put the pallet |
|
10m²~100kg |
19 |
1400*3000*1600 |
Medium (alcohol, heat transfer oil) |
Manually put the pallet |
|
30m²~300kg |
43 |
1700*5000*1800 |
Medium (alcohol, heat transfer oil) |
Manually put the pallet |
|
50m²~500kg |
70 |
2200*7000*1800 |
Medium (alcohol, heat transfer oil)) |
Crane to put pallets |
|
100m²~1000kg |
150 |
2800*8000*1800 |
Medium (alcohol, heat transfer oil) |
Crane to put pallets |
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