Molecular distillation is different from general conventional distillation, which does not reach gas-liquid equilibrium. The separation of molecular distillation is based on the different volatilities of different substances, and the separation operation is carried out below the boiling point of materials. The process is:
• Molecular diffusion from the main liquid phase to the evaporating surface. The diffusion rate in the liquid phase is the main factor to control the molecular distillation rate;
• The molecules evaporate freely from the evaporation surface, and the evaporation happens at a temperature far below the boiling point in a high vacuum;
• Molecules flying from evaporation to condensation, under the suitable vacuum, as long as the average free path of the evaporated molecule is greater than or equal to the distance between the evaporated surface and the condensed surface;
• The molecule condenses on the condensing surface, thus completing the separation and extraction of the substance molecule;
• Distillate and residue collection.
Key parameter condition of stainless steel wiped film distillation
• The faster the feeding speed is, the more heavy components will affect the evaporation
• The faster the mixing speed is, the thinner the film is formed and the longer the residence time is, but it will also hinder the number of light molecules moving to the condenser tube
• The higher the temperature of stainless steel wiped thin-film evaporator, the better the evaporation effect, but it also affects the separation rate
• The internal cooling temperature needs to be higher than the melting point temperature of the product
• Under the vacuum, it can protect the stability of products and change the boiling point of materials. The higher the vacuum degree, the better the effect
• Feeding temperature is closer to the temperature of
• Molecular diffusion from the main liquid phase to the evaporating surface. The diffusion rate in the liquid phase is the main factor to control the molecular distillation rate;
• The molecules evaporate freely from the evaporation surface, and the evaporation happens at a temperature far below the boiling point in a high vacuum;
• Molecules flying from evaporation to condensation, under the suitable vacuum, as long as the average free path of the evaporated molecule is greater than or equal to the distance between the evaporated surface and the condensed surface;
• The molecule condenses on the condensing surface, thus completing the separation and extraction of the substance molecule;
• Distillate and residue collection.
Key parameter condition of stainless steel wiped film distillation
• The faster the feeding speed is, the more heavy components will affect the evaporation
• The faster the mixing speed is, the thinner the film is formed and the longer the residence time is, but it will also hinder the number of light molecules moving to the condenser tube
• The higher the temperature of stainless steel wiped thin-film evaporator, the better the evaporation effect, but it also affects the separation rate
• The internal cooling temperature needs to be higher than the melting point temperature of the product
• Under the vacuum, it can protect the stability of products and change the boiling point of materials. The higher the vacuum degree, the better the effect
• Feeding temperature is closer to the temperature of
stainless steel wiped thin film evaporator
, it is easier to evaporate and fractionate.
The structure of stainless steel wiped film distillation for sale
A complete set of double stage
stainless steel molecular distillation for saleA complete set of double stage
includes: feeding system + main evaporator system + heating system + cooling system + vacuum system +material collection part
The characteristic of Hawach scientific stainless Steel molecular distillation for sale
1. The jacketed feeding tank is designed to preheat the materials and speed up the rectification efficiency; the built-in filter screen can pre-filter the materials and keep the purity of the materials;
2. Gear pump continuous feeding and discharging system, with glass eyepiece design of Hawach
stainless steel wiped film distillation at the collection place, which can observe the feeding and discharging conditions;1. The jacketed feeding tank is designed to preheat the materials and speed up the rectification efficiency; the built-in filter screen can pre-filter the materials and keep the purity of the materials;
2. Gear pump continuous feeding and discharging system, with glass eyepiece design of Hawach
3. Double-layer insulation pipe design, to maintain the stability of material temperature and ensure the continuous fluidity of materials;
4. The whole double stage stainless molecular distillation unit is made of stainless steel. The part contacting with the material is made of 316. The other parts are made of food-grade 304 stainless steel, which is durable and corrosion-resistant;
5.
Double stage stainless steel molecular distillation adopts frequency conversion motor to keep the evaporator rotor rotating stably;4. The whole double stage stainless molecular distillation unit is made of stainless steel. The part contacting with the material is made of 316. The other parts are made of food-grade 304 stainless steel, which is durable and corrosion-resistant;
5.
6. The stainless steel wiped thin film evaporator has a built-in high-efficiency coil condenser, which is vertically parallel to the rotor, and the light components can condense immediately when contacting the condensing surface;
7. Standard with ball milling glass collecting bottle, optional with stainless steel collecting tank;
8. The external process coil condenser is used in combination with the waste cold well condenser to prevent the waste gas from entering the vacuum pump and causing damage;
9. The main evaporator of double stage stainless molecular distillation adopts magnetic seal with good sealing effect; the discharge port is equipped with imported three-piece vacuum ball valve; other parts are sealed with flange and PTFE / fluoro rubber, and the no-load leakage rate of the equipment is less than 0.1pa/5s;
10. Double stage stainless molecular distillation is designed with vacuum meter and regulating valve, accurate vacuum degree display, providing an effective reference for vacuum regulation or equipment maintenance;
11. The integrated control cabinet enhances the automation level of double stage stainless steel molecular distillation equipment.
7. Standard with ball milling glass collecting bottle, optional with stainless steel collecting tank;
8. The external process coil condenser is used in combination with the waste cold well condenser to prevent the waste gas from entering the vacuum pump and causing damage;
9. The main evaporator of double stage stainless molecular distillation adopts magnetic seal with good sealing effect; the discharge port is equipped with imported three-piece vacuum ball valve; other parts are sealed with flange and PTFE / fluoro rubber, and the no-load leakage rate of the equipment is less than 0.1pa/5s;
10. Double stage stainless molecular distillation is designed with vacuum meter and regulating valve, accurate vacuum degree display, providing an effective reference for vacuum regulation or equipment maintenance;
11. The integrated control cabinet enhances the automation level of double stage stainless steel molecular distillation equipment.
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