Star anise Drying steps
At present, there are several methods of star anise drying as follows:
Method 1: drying in the sun, spread the fresh star anise fruit directly on the drying field, and dry it in the sun for 4 days to make the finished product;
 
Method 2: blanch and dry, put the fresh star anise fruit in 90-100 degrees Celsius water, stir for 4-6 minutes, remove the star anise fruit when the color changes from green to light yellow, spread it on the drying field, and dry it in the sun for 4 Days can be dried into finished products;



Method 3: heat pump dryer drying: 
1、Before using the star anise dryer for star drying, it is necessary to fix the green first, so that the color after drying can meet the requirements. Soak the star anise in nearly boiling water for about 3 minutes. When the star anise turns yellow slightly, pick it up, spread it out into the drying room of the heat pump star anise dryer, and turn on the air energy heat pump star anise dryer for drying.
2. Carry out the drying operation, adjust the octagonal heat pump dryer to drying mode, adjust the temperature to 60°C, and dry for 1 hour. Note that dehumidification is not required at this stage, mainly for color control.
3. Adjust the drying mode of the octagonal heat pump dryer to drying + dehumidification, adjust the temperature to 55 ℃, and dry for 3 hours. Note that a lot of dehumidification is required at this stage.
4. Keep drying + dehumidification mode, adjust the temperature to 50℃, and dry for 3 hours. Note that a lot of dehumidification is required at this stage.
5. Continue to maintain the drying + dehumidification mode, adjust the temperature to 45 °C, and dry for 3 hours. Note that there is relatively little moisture at this stage, and it can be slowly dehumidified
6. Adjust the mode to drying mode, adjust the temperature to 65°C, and dry for 2 hours. The drying program ends.


 
Compare of the advantages of Star anise drying by heat pump dryer and traditional drying method
 
First of all, in terms of environmental protection, the earth-made octagonal dryer uses primitive heat generation methods such as firewood and coal. Although local firewood can be seen everywhere, it will still have a certain impact on the atmosphere. Our octagonal dryer uses electricity and Air energy is more environmentally friendly.
Secondly, in terms of manual work, the earth-made star anise dryer needs to continuously add firewood to ensure the drying temperature, while our star anise dryer adopts computer PLC intelligent control, constant temperature drying, no manual operation is required, and it can be started immediately. Can wait to dry.
Then, the drying quality, the earth-made star anise dryer, the temperature fluctuates high and low, once the control is not good, there will be problems such as poor drying effect and excessive drying; and our star anise dryer adopts intelligent The operation is optimized, the constant temperature design, and the temperature is set according to the preset temperature to achieve heating and cooling.