1l complete short path distillation kit
Short path ditilation unit is a special liquid-liquid separation technology carried out under high vacuum. The evaporated molecules escaped by heat reach the condenser through a short distance (much larger than the average free path of the molecules) and then condense rapidly to realize the mixture. Efficient separation.
Unlike conventional distillation and evaporation, short-path distillation process overcomes the constraints of gas-liquid equilibrium and has a higher mass transfer driving force.
Complete Short Path Distillation Kit
The main features of the short-path distillation unit:
1. Operate at a temperature far below the boiling point of the material, so that the residence time of the material is short, which is conducive to the separation of easily oxidized materials with high boiling point and high heat sensitivity;
2. Effectively remove substances in liquids such as organic solvents and odors, which is a very effective method for desolventizing liquids after solvent extraction;
3. The short-path distillation unit can choose to evaporate other impurities, and multi-stage separation can separate more than two substances at the same time;
4. The vacuum degree in the distillation process is very high, which can reach below 0.1pa, and a high degree of vacuum can also be obtained inside. Generally, molecular distillation is carried out at very low pressure, so the material is not easily damaged by oxidation;
5. The distillate film is thin, the heat transfer efficiency is high, and the thickness is less than 0.5 mm;
6. High degree of separation, molecular distillation can separate conventional substances that are difficult to separate;
7. No boiling and bubbling. Molecular distillation is a process of free evaporation from the surface of a liquid layer. It is carried out under low pressure, and there is no dissolved air in the liquid, so the whole liquid will not boil, and there will be no air bubbles during the distillation process;
Short-path distillation equipment is a special technology for liquid-liquid separation. The mean free path of vapor molecules is greater than the distance between the evaporation surface and the condensation surface under high vacuum conditions, so the difference in the evaporation rate of the components in the feed liquid can be used to separate the liquid mixture.
Molecular distillation, also known as short-path distillation, is a continuous distillation process carried out under high vacuum. The molecular distillation process is different from the traditional distillation process. The traditional distillation is separated at the boiling point temperature. The evaporation and condensation processes are reversible, and the liquid phase and the vapor phase will form an equilibrium state. Molecular distillation process is an irreversible distillation process carried out at a temperature far from the atmospheric boiling point of the substance, more precisely, it is a process of molecular evaporation.
Molecular distillation is a special distillation in a non-equilibrium state that is different from conventional distillation. Compared with conventional distillation, molecular distillation has the following characteristics:
The main features of molecular distillation unit:
(1) The operating temperature is low, which can greatly save energy consumption
Conventional distillation is based on the difference in boiling point of different substances in the material mixture, while molecular distillation is based on the difference in the mean free path of molecular motion of different substances. Separation can be achieved when volatilization escapes from the phase. Because molecular distillation is operated far from the boiling point, the energy consumption of the product is small.
(2) The distillation pressure is low, and it is required to operate under high vacuum.
The mean free path of molecular motion is inversely proportional to the system pressure. Only by increasing the degree of vacuum can a sufficiently large mean free path be obtained. Studies have pointed out that the vacuum degree of molecular distillation is as high as 0.1-100Pa.
(3) The heating time is short, which reduces the thermal damage of heat-sensitive substances.
Since molecular distillation uses the difference in the mean free path of molecular motion of different substances to achieve separation, the basic requirement is that the distance between the heating surface and the condensing surface must be smaller than the mean free path of motion of light molecules, which is usually very small, so light molecules are separated by After the liquid surface escapes, it shoots towards the condensing surface almost without collision, so the heating time is very short. Studies have determined that the heating time of molecular distillation is only a few seconds or tens of seconds, thus largely avoiding the decomposition or polymerization of substances.
(4) High degree of separation and high product yield, especially suitable for specific distillation.
1L Short Path Distillation Kit
The scope of application of short-path distillation is:
1. Fine chemicals: such as aromatic oil purification, polymer intermediate purification, lanolin extraction, etc.;
2. Pharmaceutical field: such as extracting natural vitamin AE to synthesize amino acids and glucose derivatives;
3. Food industry: such as refining fish oil, deacidification, refining higher alcohol, and separating mixed oil;
4. Other fields: petroleum industry, chemical industry, environmental protection.
The above is 1l complete short path distillation kit. If you have needs, you can contact Zhengzhou Keda Machinery Equipment Co., Ltd. For decades, Zhengzhou Keda Machinery Equipment Co., Ltd. has been committed to the production and manufacture of laboratory instruments and pipe fittings.
If you want to know about our products, or want to buy our instruments, please feel free to contact us, we will be happy to help you.
