Single-Stage Stainless Steel Molecular Distillation

Overview

Single-stage stainless molecular distillation is a piece of special liquid-liquid separation equipment, which is different from traditional distillation such as rotary evaporator and reactors, stainless steel wiped film molecular distillation has its unique separation principle, which relies on different average free path of molecular movement rather than the different boiling point.

Short path molecular distillation units

 

has its special advantages which are high distillation efficiency and low-temperature physical distillation property(which will not affect the property of distillate material). short path molecular distillation equipment technology is widely used in distillation, purification, solvent removing, decoloration, and deodorization of many substances, especially the heat-sensitive substance.

Working process of single-stage stainless molecular distillation

Stainless steel wiped film molecular distillation

 

is a combination of vacuum evaporator and thin film evaporator. When the liquid mixture enters the interior of the short path stainlness molecular distillation units, with the rotation of the stirring motor, the scraper scrapes the liquid mixture along the inner wall of the evaporator into a very thin liquid film and the thickness of the liquid film is less than 0.5um, that’s why we call this technology stainless steel wiped film evaporator distillation.

And at the same time heats the inner wall of the evaporator. After being heated, molecules with sufficient energy will overflow from the surface of the liquid film of

short path molecular distillation equipment

 

. The average free path of the light molecule is large, but the average free path of the heavy molecules is small, and then set a condensation plate inside of the stainless steel wiped film molecular distillation where the distance is smaller than the average free path of the light molecules and greater than the heavy molecules. The right place where to place the condensation is the key point for the function of short path stainless molecular distillation units.

At this time, light molecules in the gas can reach the condensation plate, the condensation plate continuously condense the light molecular, the dynamic balance of the light molecules in the system is disrupted, then the light molecules can constantly overflowing, then we can get the light molecules from the short path stainless molecular distillation equipment. Conversely, the heavy molecules in the gas cannot reach the condensation plate, they will soon be in dynamic equilibrium with the heavy molecules in the surface of the liquid film. From the performance, we see that the heavy molecules no longer overflow from the liquid phase so that a mixed liquid can be separated by single-stage stainless molecular distillation.

Features

(1). The operating temperature of the short path molecular distillation equipment is far below the boiling point of the material, and the residence time of the material is really short, which is beneficial to separate materials with the high boiling point, heat sensitive and easy oxidized.

(2). The short path molecular distillation units can effectively remove substances in liquids such as organic solvents, odors, etc, which is a very effective method for liquid desolventizing after solvent extraction.
(3). The vacuum degree of the stainless steel wiped film molecular distillation can reach below 0.1Pa which ensures the material not to be oxidized easily during distillation.
(4). The short path molecular distillation equipment can form a very thin liquid film less than 0.5mm and this special film make sure that distillation with high heat transfer efficiency.
(5).

Single-stage stainless steel molecular distillation

with a high degree of separation, conventional substances that are not easily be separated can be separated by molecular distillation.
(6). No boiling or bubbling phenomenon. Single-stage stainless steel molecular distillation is a kind of free evaporation on the surface of the liquid film. As a very low pressure without any dissolved air in the liquid ensures the entire liquid cannot be boiled during the distillation process and no bubbling either.
(7). The short path molecular distillation units is a physical separation method, non-toxic, non-harmless, pollution-free, no residue, make sure to obtain pure and safe products.
(8). The scraper system of the short path molecular distillation equipment is made of PTFE material and SS316L stainless steel, which make sure this equipment with extremely high corrosion resistance.
(9). Each connector of the single-stage stainless steel molecular distillation is sealed with a PTFE gasket, which makes sure good leakproofness and corrosion resistance.
(10). The surface of the short path molecular distillation equipment was contacting with materials are made of 316L stainless steel, which makes sure good resistance to weakly corrosive media such as air, steam, water, and chemically corrosive media such as acid, alkali, and salt. The exterior surfaces of the short path molecular distillation equipment are made of 304 stainless steel, which make sure good corrosion resistance, wear-resistance and low-temperature resistance. The overall thermal expansion performance and thermal insulation performance of the stainless steel wiped film molecular distillation are really good.
(11). The main evaporator of the single-stage stainless steel molecular distillation has a unique hierarchical design which is easy to disassemble and clean.

Single-Stage Stainless Steel Molecular Distillation