Short Path Distillation Machine

Product Description:

Short path distillation machine (molecular distillation) is a new separation technology that can solve a large number of problems that cannot be solved by conventional distillation technology. Short path distillation machine (molecular distillation) is a special liquid-liquid separation technology, which can operate under extremely high vacuum. Its separation is especially suitable for the separation of high boiling point, heat sensitive and easily oxidized systems. Due to its characteristics of distillation temperature lower than the boiling point of the material, low distillation pressure, short heating time and high separation degree, it can greatly reduce the separation technology of high boiling point materials and excellently protect the characteristic quality of heat sensitive materials. This technology is used for the extraction of natural health products, which can get rid of the shackles of chemical treatment methods and truly maintain the characteristics of pure nature.
 

 

Advantages of Short path distillation machine:

According to the principle of molecular distillation separation, molecular distillation separation mainly relies on the difference in molecular mean free path between light molecules and heavy molecules, and at the same time, the light molecules to be separated that escape during the separation process are easily obtained by cooling Light weight, so the short path distillation machine has the following basic features:

 

(1) Low-temperature distillation away from the boiling point of the compound Conventional distillation technology mainly relies on the difference in boiling point between compounds to separate, so to achieve efficient separation, the compound to be separated must be in a boiling state, so the separation process of conventional distillation technology needs more high temperature. Molecular distillation separation technology relies on the difference in the mean free path of molecular motion of the compound to separate. The high vacuum distillation process can not only reduce the full point of the compound but also further increase the difference in the mean free path between the compounds, so the distillation process can be in Efficient distillation at low temperatures.

 

(2) Distillation under ultra-low pressure The theoretical molecular distillation separation process occurs between 0.01Pa and 0.1Pa. Ultra-low distillation pressure can increase the mean free path of molecular motion of the compound, thereby expanding the difference in mean free path between compounds , to achieve efficient separation. The traditional distillation technology is mostly pot distillation. The compound to be separated is first vaporized at the boiling point and becomes a gas, and the gaseous compound is extracted as a whole under the action of a vacuum pump, and can only be condensed when it flows through the condenser. The long distance between the condenser and the evaporating surface makes this distance full of gaseous compounds, making it difficult to reduce the pressure at the evaporating liquid surface. For molecular distillation technology, since the condenser and the evaporating surface are arranged very closely, once the compound to be separated volatilizes and escapes, it will be condensed immediately, so the partial pressure of the gaseous compound between the condenser and the evaporator surface is very low, and the super Compound separation at low pressure.

 

(3) Fast and efficient separation During the separation process of molecular distillation, the compound to be separated flows in from the upper part of the separator body and flows out from the lower part. On the surface of the evaporator, the compound to be separated will form a liquid film with a thickness of about 2 mm under the action of the film forming part. The liquid film distillation is conducive to the efficient escape of the compound to be separated. At the same time, in the process of molecular distillation separation, the close distance between the condensation surface and the evaporation surface enables the compound to be separated to be condensed rapidly once it escapes, thus reducing the residence time of the heat-sensitive compound to be separated at high temperature, which is conducive to maintaining the compound’s concentration. characteristic. In general, molecular distillation technology can not only reduce the residence time of the compound to be separated on the heated surface, but also shorten the high-temperature gaseous residence time between the escape and condensation of volatile components.
 

 

Application of Short path distillation machine:

1. Fine chemical industry, such as the purification of aromatic oil, the purification of high polymer intermediates, the extraction of lanolin, etc.

2. Food industry: such as refined fish oil, oil deacidification, refined high-carbon alcohol, separation of mixed oils, etc.

3. Other fields: petroleum industry, daily chemistry, environmental protection, etc.

 

The short path distillation machine is an instrument that realizes liquid-liquid separation based on the difference in the mean free path of molecular motion of different substances, and can solve problems that cannot be solved by conventional distillation techniques. There are some precautions in operation, which need to be paid attention to during use to avoid malfunction of the instrument due to misoperation.

1. The liquid level of each effect separator needs to be strictly controlled so that it is in a suitable position required by the process.

2. When distilling materials that are prone to crystallization, scaling and clogging of pipelines, plate evaporators, valves and other parts are prone to occur. Therefore, it needs to be washed with water regularly to keep it unblocked, or to take measures such as vacuum pumping to remedy it.

3. The instrumentation of the device needs to be adjusted frequently to make it sensitive and reliable. If the instrument is found to be malfunctioning, find out the reason and deal with it in time.

4. The equipment and pipelines of the short-range molecular distillation apparatus need to be strictly inspected and inspected frequently, and the sight glass should be inspected frequently and replaced in due course to prevent accidents caused by corrosion.

5. Before overhauling the equipment, release the pressure and discharge the material, rinse with water to cool down, and remove the remaining corrosive liquid in the equipment.

6. Operators and maintenance personnel should wear protective clothing to avoid personal injury caused by hot liquid and hot steam.