Industrial Freeze Dryer
Industrial freeze dryer is a drying equipment that mainly uses vacuum environment and freezing technology to remove moisture from items. The material is placed in a vacuum environment and frozen, and then the moisture is removed by heating and evaporation to achieve the purpose of drying.
PALET is an expert in the design and production of freeze dryers, providing customized solutions for freeze dryers. It can be tailored according to customer needs.
PALET always adheres to the principle of winning by quality and regards user satisfaction as the product quality standard. From product design, production to user use, a series of effective quality assurance measures are strictly implemented, user files are established, and professional and high-quality after-sales services are provided to users to ensure that users have no worries.
Table of Contents
Equipment advantages and features
1.The refrigeration system adopts high-quality compressor units with high refrigeration efficiency, stable performance and easy maintenance.
2.The vacuum system adopts a dual system design of pre-extraction unit and maintenance unit to improve the stability and durability of system operation.
3.Equipped with an independent quick-freezing warehouse, pre-cooling and drying are completed separately, which is conducive to shortening the production cycle and can be produced continuously.
4.Touch screen operation, PLC control system, real-time monitoring of equipment operation, with fault alarm function.
5.Can be connected to a computer for remote control, and easily record and store freeze-drying data and freeze-drying curves.
6.Adopt refrigerants that meet international environmental standards, good refrigeration effect, green and environmentally friendly.
Equipment product parameters(PTDGF5M-PTDGF30M)
| Model | PTDG-Y50M | PTDG-Y100M | PTDG-Y200M |
|---|---|---|---|
| Control method | LC automatic control | LC automatic control | LC automatic control |
| Drying area | 50㎡ | 100㎡ | 200㎡ |
| Pacity | 500KG | 1000KG | 2000KG |
| Barrel inner diameter | Diameter2.2m | Diameter2.5m | Diameter2.5m |
| Cylinder wall thickness | 8mm | 8mm | 8mm |
| Shelf temperature | （0℃~120℃） | （0℃~120℃） | （0℃~120℃） |
| Shelf Media | Purified water | Purified water | Purified water |
| Cold trap temperature | （-50℃~-80℃） | （-50℃~-80℃） | （-50℃~-80℃） |
| Vacuum Pump | Combined pump set | Combined pump set | Combined pump set |
| Working vacuum | ≤130 pa | ≤130 pa | ≤130 pa |
| Defrosting method | Spray | Spray | Spray |
| Cooling water consumption | 6.5m³/h | 13m³/h | 25m³/h |
| Heating method | Electric heating | Electric heating | Electric steam heating |
| Steam consumption(kg\h) | 150 | 300 | 600 |
| Operating temperature | ≤40℃ | ≤40℃ | ≤40℃ |
Equipment product parameters(PTDGY50M-PTDGY200M)
| Model | PTDG-Y50M | PTDG-Y100M | PTDG-Y200M |
|---|---|---|---|
| Control method | LC automatic control | LC automatic control | LC automatic control |
| Drying area | 50㎡ | 100㎡ | 200㎡ |
| Pacity | 500KG | 1000KG | 2000KG |
| Barrel inner diameter | Diameter2.2m | Diameter2.5m | Diameter2.5m |
| Cylinder wall thickness | 8mm | 8mm | 8mm |
| Shelf temperature | （0℃~120℃） | （0℃~120℃） | （0℃~120℃） |
| Shelf Media | Purified water | Purified water | Purified water |
| Cold trap temperature | （-50℃~-80℃） | （-50℃~-80℃） | （-50℃~-80℃） |
| Vacuum Pump | Combined pump set | Combined pump set | Combined pump set |
| Working vacuum | ≤130 pa | ≤130 pa | ≤130 pa |
| Defrosting method | Spray | Spray | Spray |
| Cooling water consumption | 6.5m³/h | 13m³/h | 25m³/h |
| Heating method | Electric heating | Electric heating | Electric steam heating |
| Steam consumption(kg\h) | 150 | 300 | 600 |
| Operating temperature | ≤40℃ | ≤40℃ | ≤40℃ |
Freeze drying process
What is the working process of the freeze dryer? Please follow us to take a look.
1. Activate the vacuum system: First, activate the vacuum system in the vacuum freeze dryer to remove other gases and impurities and create a stable and reliable vacuum environment.
2. Turn on the refrigeration system: Turn on the refrigeration system to start the circulation of the refrigerant in the condenser. The function of the condenser is to condense the moisture in the air into liquid so that it can be removed.
3. Freezing stage: Place the material to be treated in the freezer to lower its temperature. The freezing process will convert the moisture from the material into ice, forming an ice layer, which effectively reduces the moisture content.
4. Heating stage: Heat in the freezer to increase the temperature so that the ice layer melts quickly and turns into water vapor. Due to the low pressure in the vacuum environment, the moisture can be directly converted into gas when it evaporates without passing through the liquid state.
5. Remove moisture: During the heating process, the refrigerant in the condenser will cool the water vapor, causing it to condense into liquid and discharge again. This completes the removal of moisture.
6. Dry the material to be treated: Repeat the freezing and heating stages until the moisture in the material to be treated reaches the required dryness.
It is worth noting that the working principle of the vacuum freeze dryer is based on the physical principles of condensation and evaporation, and utilizes the characteristics of materials in a vacuum environment. By controlling parameters such as temperature and pressure, an efficient drying effect can be achieved.
Freeze drying equipment components
Each high-quality freeze dryer comes from PALET‘s pursuit of excellence in quality. Let us show you in detail the specific structure and functions of our freeze-drying equipment.
●Vacuum system
The vacuum system consists of a vacuum pump or a Roots pump. Its main function is to establish system vacuum and exhaust gas. An automatic shut-off valve is installed at the air inlet of each vacuum pump to prevent gas reflux due to power outage.
●Refrigeration system
The refrigeration system consists of a refrigeration compressor, a water-cooled condenser, an expansion valve, a plate evaporator, an oil separator, etc. The main unit uses an imported single-machine two-stage semi-enclosed compressor. Each main unit constitutes an independent refrigeration cycle system, and the plate layer and the cold trap are cooled respectively through a plate heat exchanger or a condenser tube.
The system pipeline design is advanced and the installation is precise, which can ensure long-term stable and efficient operation. The refrigeration system is designed with sufficient cooling capacity to cope with the water vapor load generated by sublimation. The system is also equipped with many functions such as motor overload thermal protection, high pressure protection, low pressure protection, medium pressure protection, oil pressure difference protection, automatic liquid collection, cooling water shortage protection, etc.
●Circulation system
The circulation system is a system that can accurately control the temperature of the heating plate, thereby ensuring the sublimation heat energy required for the product during the sublimation process. Its working principle is that steam heats the heat transfer fluid through the plate heat exchanger, and the circulation pump sends the heated distilled water to the heating plate, thereby achieving the purpose of heating the heating plate. To cool the heating plate, it is necessary to use cooling water to exchange heat with the heat transfer fluid in the plate heat exchanger, thereby achieving the purpose of cooling the heating plate.
●Heating system
The main components of the heating system are steam flow control valve, safety valve, steam trap, temperature sensor, etc. The main function of the system is to control the steam supply through the flow control valve, control the temperature of the heating plate, and meet the heat required for sublimation of the product. The system is also equipped with a safety valve to ensure safety.
●Heating plate
The heating plate is made of D31 (6363) aluminum alloy profile and is installed on the left and right sides of the warehouse. The top heating plate is a heating compensation plate. When working, the material plate is in the middle of the two layers of heating plates. The surface of the heating plate is anodized + natural color treated. The function of the heating plate layer is to provide sufficient sublimation heat for the material.
●Condenser
The condenser is a device that captures sublimated water vapor and is integrated with the drying chamber to minimize the movement resistance of water vapor. The condenser tube is made of stainless steel material, which is mechanically bent and welded by an automatic welding machine. It is assembled after 1.6MPa pressure test and leak detection. A window is installed at the rear of the condenser.
●CJS-Freeze Dryer Control System
CJS-Freeze Dryer Control System is an intelligent operating system developed based on terminal and remote control. It consists of relays, contactors, temperature sensors, pressure sensors, digital-to-analog conversion modules, programmable controllers, touch screens, etc.
It is a large-scale industrial-grade software that can intuitively display the operating status of each component, system operation process and records, alarms and alarm records, freeze-drying process settings and storage and calls, and fault self-diagnosis systems. Its hardware is all made of internationally renowned brands. It provides programs and operating interfaces for communication with computers, so as to realize wireless remote control and diagnosis.