The extractor with three or four extraction tanks in serious will give outlet solution with solid contents of around 6-12%. This solution contains some fiber inside. Then the disc separator will separate the fiber.
If cold water soluble instant tea is required, the disc separator will also separate most tea oil. Depend on the customer’s requirements, it could be one disc separator for dual application (two phases and three phases separation) or two disc separators separately.
The separated solution will then be concentrated by the evaporator. The solid contents after evaporator is normally around 30-45% (depends on the type of tea).
The concentrated tea will then be dried into tea powder with the spray dryer. Pressure spray dryer will give bigger particle, and instant soluble tea.
If the required product size is bigger, such as 1 or 2 mm, a fluid bed granulator is provided on request.