With the development of technology, drying seaweed is not as difficult as it used to be. In the past, when drying seaweed/ kelp, it was necessary to choose a sunny weather for seaweed / kelp drying. In the process of natural drying, seaweed/kelp will also be exposed to pollution such as dust and bacteria in the air. Now we have a complete set of professional seaweed drying machine, including seaweed/kelp cleaning and cutting equipment.
The seaweed drying method mainly includes: washing the seaweed, blanching the seaweed for color protection, slicing/shredding the seaweed, air-drying the seaweed, putting the dried seaweed pieces/filaments into the push tray, and putting the seaweed pieces on the tray filled with the trolley. / Wire push into the seaweed dryer. After setting the seaweed drying temperature, humidity, and drying time, the seaweed can be dried automatically.
The seaweed specific drying process
The first stage, the heating stage: put the trays with the seaweed into the oven evenly without overlapping, so as to avoid unnecessary air leakage caused by improper placement of the trays. Close the box door, heat the inside of the box to 50°, and heat it for 1.5-3 hours. When there is moisture in the box, start to drain the moisture for about 2 minutes. After the moisture is drained, the temperature in the box will drop. Continue to supply hot.
Second stage. Constant speed drying and moisture removal stage: It should be divided into two stages: high humidity and low temperature, and medium humidity and medium temperature. In the high-humidity and low-temperature section, the temperature is less than 60 degrees, and the range is 55 degrees to 60 degrees. To avoid the change of seaweed color caused by high temperature and high humidity, observe the change of water vapor on the surface of the seaweed, and remove moisture at any time. This period should be 3 to 3.5 hours. In the mid-humidity and mid-temperature section, the temperature is less than 60 degrees, and the range is 50 degrees to 60 degrees. In this section, the air inlet valve can be properly opened, the return air valve can be properly closed, and the amount of moisture can be adjusted reasonably.
The third stage, the speed reduction and shaping stage: also known as the low humidity and high temperature section, the temperature in this section is 70 degrees to 80 degrees, and it should not exceed 70 degrees in the early stage, and should not exceed 80 degrees in the later stage.