Organic solvent spray dryer for ethanol laboratory

Organic solvent spray dryer for ethanol laboratory

Main features:

1. 7-inch touch screen operation control, fully Chinese operation interface, PID constant temperature control for heating temperature, can directly set inlet temperature, air flow rate, automatic needle frequency, pump speed, realize data acquisition, process monitoring and control, adopt dual control mode of fully automatic control and manual control, and the entire experimental process is dynamically displayed on the color touch screen (animation).

2. The self-priming peristaltic pump enters the drying chamber from the container through the nozzle, and the compressed nitrogen enters the drying chamber from the outer casing to make the liquid particles. The heated nitrogen enters the drying chamber from the upper layer and meets the liquid particles after spray, and the articles begin to dry. The dried powder particles are separated from the exhaust gas through the rotary air separator and enter the collection bottle. The air flow containing organic steam is cooled down in the heat exchanger, and then the solvent is condensed and recovered in the refrigeration device. The clean nitrogen enters the next cycle.

3. The spray dryer in the inert gas closed cycle laboratory will seal these toxic gases in the system and collect them in the next process, which can reduce environmental pollution and help environmental protection. To avoid the problem of toxic gas pollution in raw material production.

4. The explosion-proof closed laboratory spray dryer enables materials to circulate in the closed drying system, which can avoid the contact between organic solvent gas and external oxygen air, ensure safe production, and effectively solve the problem of flammable, explosive and difficult drying of organic solvent materials.

5. The drying and transportation of materials in a closed-loop system with antioxidant properties serve the purpose of isolating them from oxygen, ensuring the quality of drying and production of easily oxidizable materials;

6. During the experiment, the spray head is not eccentric when atomizing, and will not affect the recovery rate when spraying to the bottle wall when spray. The spray head can move up and down to change the atomization position, so as to improve the drying effect of spray; The spray head has very good adaptability to high viscosity materials, and the phenomenon of blocking the spray head rarely occurs.

7) Standard exhaust dust removal device reduces environmental pollution, effectively improves yield, and increases the yield of difficult to recycle materials.

Organic solvent spray dryer for ethanol laboratory

Technical Specifications:

1. Material handling capacity: 20-1000ML/H (depending on the difference in solid content of the material)

2. Real time PID constant temperature control technology, heating and temperature control accuracy: ± 1 ℃;

3. Inlet air temperature control: maximum 250 ℃, outlet air temperature: maximum 140 ℃

4. Nozzle diameter: 0.5mm/0.7mm/0.75mm/1.0mm/1.5mm/2.0mm optional, and can be customized according to requirements

5. The whole machine is made of stainless steel, with two fluid spray atomization structure. The spray, drying and collection system is made of high quality SUS304 stainless steel (with observation mirror)

6. Whole machine power: 2KW/220V

7. It can be used for spray drying of aqueous and organic solutions

8. Dimensions: 950mm * 980mm * 1060mm

What inspections should be carried out for spray dryer before experiment

Before using the spray dryer, it is necessary to check the state of the machine in all aspects, so as to ensure that faults can be found in case, which is conducive to time troubleshooting maintenance. Moreover, the real-time inspection of various performances of spray dryer will greatly improve the safety performance.
1. Check whether the connection between the bearing and the sealing part of each device of the spray dryer is loose;

2. Check the lubricating oil condition of each mechanical part and whether the valve ports of each water, air and laboratory spray dryer slurry pipe are in the required position;
3. Check if the sealing material is installed at the pipeline connection, and then connect it to ensure that unheated air does not enter the drying chamber;

4. Check if the door and observation window are closed and if there is any air leakage;
5. Check whether the rotating direction of the centrifugal fan of the spray dryer is correct;
6. Check if the regulating butterfly valve at the outlet of the centrifugal fan is open. Do not close the butterfly valve tightly, otherwise it will damage the electric heater and air inlet duct. This must be taken into full attention;
7. Check if the connecting pipeline of the feed pump is properly connected and if the rotation direction of the motor and pump is correct;
8. Check whether the spray head on the top of the drying chamber is properly covered to avoid air leakage;
9. Whether the lubricating oil cooling pipe joint of the atomizer is well connected, and whether the cooling water of the laboratory spray dryer is turned on.
10. Then, turn on the power supply of the spray dryer to check whether the voltage and instrument are normal, and then check the amount and concentration of slurry in the slurry mixing bucket. If any problem occurs, it should be eliminated in time and notified to the manufacturer's technicians for immediate maintenance and repair.

Difference between freeze dryer and spray dryer

There are significant differences between freeze dryer and spray dryer in process principle, application field, drying time, product structure, property and cost. ‌

Process Principle

Freeze dryer: uses physical principles to separate and remove moisture from materials. The process includes three steps: pre cooling, freezing, and dehydration. Pre cooling is the process of lowering the temperature of materials, while freezing is the process of cooling materials below freezing point, causing water to directly transform from solid to gaseous state; Dehydration is the process of evaporating water from materials and extracting it through a vacuum pump.

Characteristics: Moisture is directly transformed from solid to gaseous state, avoiding the crystallization process and providing good protection for the structure and function of the material.

Spray dryer: It disperses materials into small droplets through mechanical action, contacts with hot air, and the water vaporizes rapidly to obtain dried products. This process is usually carried out at high temperatures, where the material is thoroughly mixed and in contact with hot air to achieve rapid drying

Features: Through high-temperature hot air drying, the material is fully mixed and in contact with hot air, achieving rapid drying.