Food freeze drying is a special form of food vacuum drying. There are many other methods for freeze-drying, such as vacuum freeze-drying, sublimation drying, and freeze-sublimation drying. It freezes the material below freezing point to make the water into solid ice, and then makes it at a higher vacuum. The ice is directly removed by conversion to water vapor without a liquid state, thereby obtaining a dried product. The phase equilibrium relationship of water is the basis for the research and analysis of freeze-drying of water-containing foods...
When purchasing freeze dryer equipment, there are often many problems. From the perspective of users, Beijing Songyuan Huaxing introduced some selection techniques for experimental series freeze dryers....
Pharmaceutical freeze dryer cleaning and drug formulation cooling problems
The freeze dryer (freeze dryer) consists of a refrigeration system, a vacuum system, a heating system, and an electrical instrument control system. The main components are drying ovens, condensers, refrigeration units, vacuum pumps, heating/cooling devices, etc. Freeze-drying is referred to as lyophilization, which is a method in which an aqueous substance is first frozen into a solid state, and then the water therein is sublimated from a solid state into a gaseous state to remove water and preserve the substance. ...
in-situ vacuum freeze dryer...
How to choose the right freeze dryer, today Songyuan Huaxing's small series will be sorted out, choose the freeze dryer, first from the freeze-drying area, cold trap temperature, cooling rate, ultimate vacuum, vacuum time and lamellar temperature Considering the uniformity and flatness, let's take a look at it one by one:...
