Evaporation Equipmet for Processing CBD
— — Falling Film Evaporator
A faling film eporator can be used in the process of processing cannabis and cbd, which plays an essential role in separating substances from the mixture. During the cannabis-processing process, a falling film evaporator is to get ethanol evaporated. In this way, purer cbd can be obtained and ethanol can be recycled as well.
A falling film evaporator refers to a concentration and evaporation device used in industries. It is applicable for the concentration and evaporation of water, organic solvents and solutions in the pharmaceutical, food, chemical, light industries and other industries, and it is especially suitable for heat sensitive materials and materials with higher concentration and higher viscosity. The equipment is continuously operated under vacuum and low temperature conditions, with high evaporation capacity, energy conservation, low operating cost. It can ensure that the material is invariable during the evaporation.
A falling film evaporator is widely used in many fields, including industrial factory, chemical engineering, petroleum and other fields. It has a high efficiency on the separation of substances. It can be used in milk, glucose, starch, pharmaceutical, chemical, biological engineering, environmental engineering, waste liquid recovery and other fields.
The working principle of a falling film evaporator can be described as follows. The liquid is added to the upper tube of the heating chamber. Through the liquid distribution and film forming device, it is evenly distributed into the heat exchange tubes. Under the action of gravity and vacuum induction and air flow, it forms a uniform film from the top to the bottom. During the flow, it is heated and vaporized by the shell-side heating medium. The generated steam and the liquid phase enter the separation chamber of the evaporator. The vapor-liquid is sufficiently separated, and the steam enters the condenser for condensation (single-effect operation) or enters the next-effect evaporator. The medium is heated to achieve multi-effect operation, and the liquid phase is discharged from the separation chamber.
A falling film evaporator is suitable for heat-sensitive substances, so using it to extract cbd is a right choice. During the extracting process, hemp is added to the upper tube of the heating chamber, and evenly distributed into the heat exchange tubes through the liquid distribution and film forming device. Under the action of gravity and vacuum induction and airflow, it flows into the uniform film from top to bottom. During the flow, the cannabis is heated and vaporized by the shell-side heating medium. The generated steam and the liquid phase enter the separation chamber of the evaporator. The vapor-liquid is sufficiently separated, and the steam enters the condenser for condensation (single-effect operation) or into the next evaporation. The device acts as a heating medium to achieve multi-effect operation, and the liquid phase is discharged from the separation chamber.
Falling Film Evaporator for Sale
Working Flow Diagram of Falling Film Evaporators
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Advantages of a Falling Film Evaporator
- The heat transfer coefficient is relatively large because the material in the heat exchange tube is in the film state and has a fast flow rate.
- The low temperature difference can be selected, since the pipe material flows downward along the inner wall of the pipe by its own gravity.
- The chemical properties of heat sensitive materials won’t be affected because of the short residence time of the raw material in the heat exchange tube.
- The surface state of the heat exchange tube hardly affects the boiling of the material, because it exhibits convection boiling after the tube material is heated.
- It can save energy because the pipe side material is almost in the ambient temperature without pressure drop.
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Construction of a Falling Film Evaporator
The falling film evaporator system mainly consists of several parts.
The first part is the evaporator (the heat exchanger), which is used to heat and evaporate liquid materials.
The second part is the separator, mainly used to separate the concentrated liquid and the secondary steam generated after heating.
The third part is the preheater, which is used to preheat liquid materials entering the steam and cool the secondary steam in order to recycle and utilize it.
The fourth part is the condenser, whose function is to condense the secondary steam so that it can be recycled and utilized.
The fifth part is the condensate tank, which is connected to the pump at the outlet and capable of discharging condensate liquid automatically.
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