分子蒸餾儀介紹Introduction To Molecular Distillation Unit：

分子蒸餾是一種特殊的液—液分離技術(shù)，它不同于傳統(tǒng)蒸餾依靠沸點差分離原理，而是與被蒸餾混合物的分子量的大小有關(guān)，能夠?qū)崿F(xiàn)遠離沸點下的操作，分子量差異越大，分子自由程相差越大，餾出物就越純。這里的分子自由程（用λ表示）是指一個分子相鄰兩次碰撞之間所走的路程。

在高真空的條件下，液體混合物沿著加熱板流動被加熱，根據(jù)不同分子量物質(zhì)的分子平均自由程的不同，它們在汽化表面與冷凝表面之間分子平均自由程的大小以及蒸發(fā)度也明顯的不同，輕組分分子的分子平均自由程的大，而重組分分子的分子平均自由程小，使得輕組分恰好能到達冷凝板上面被冷凝，使其沿冷凝板留下；而重組分分子因達不到冷凝板而沿著加熱板留下，從而將不同物質(zhì)進行分離。

Molecular distillation is a special liquid-liquid separation technology. It is different from traditional distillation. It depends on the boiling point difference separation principle, but is related to the molecular weight of the distilled mixture. It can realize the operation far away from the boiling point. The greater the molecular weight difference, the greater the molecular free path difference, and the purer the distillate. The molecular free path here λ Is the distance traveled between two adjacent collisions of a molecule.

Under the condition of high vacuum, the liquid mixture flows along the heating plate and is heated. According to the different molecular average free path of substances with different molecular weight, the size and degree of evaporation of their molecular average free path between the vaporization surface and the condensation surface are also significantly different. The molecular average free path of light component molecules is large, while the molecular average free path of recombinant component molecules is small, So that the light component can just reach the condensing plate and be condensed, leaving it along the condensing plate; The recombinant molecules are left along the heating plate because they can not reach the condensing plate, so as to separate different substances.

分子蒸餾儀技術(shù)特點Technical Features：

分子蒸餾技術(shù)作為一種與國際同步的高新分離技術(shù)，具有其他分離技術(shù)沒有的優(yōu)點：

1.遠低于物料沸點的溫度下操作,而且物料停留時間短;利于高沸點、熱敏及易氧化物料的分離；

2.有效地脫除液體中的物質(zhì)如有機溶劑、臭味等,對于采用溶劑萃取后液體的脫溶是非常有效的方法；

3.可有選擇蒸發(fā)產(chǎn)出物,去除其它雜質(zhì),通過多級分離可同時分離2種以上的物質(zhì)；

4. 可有效地脫除輕分子物質(zhì)（脫臭）、重分子物質(zhì)（脫色）及脫除混合物中雜質(zhì)；

5.其分離過程為物理分離過程，可很好地保護被分離物質(zhì)不被污染，特別是可保持天然提取物原來的品質(zhì)；

6.沒有沸騰鼓泡現(xiàn)象，分子蒸餾是液層表面上的自由蒸發(fā)，在低壓力下進行，液體中無溶解的空氣，因此在蒸餾過程中不能使整個液體沸騰，沒有鼓泡現(xiàn)象；

7. 分離度高，高于傳統(tǒng)蒸餾及普通的薄膜蒸發(fā)器；

8.容易形成連續(xù)化生產(chǎn)，操作簡單；

9.分子蒸餾的蒸程短，分子平均自由程一般不超過25mm，能耗小。

10.進料罐可選實現(xiàn)預(yù)加熱功能，預(yù)熱溫度可以調(diào)節(jié)；

11.各個接口采用的是氟膠墊片進行密封，氣密性好，如客戶需要耐腐蝕可以更換成四氟材質(zhì)。

As a high-tech separation technology synchronized with the world, molecular distillation technology has incomparable advantages over other separation technologies:

1. Operate at a temperature far below the boiling point of the material, and the residence time of the material is short; It is conducive to the separation of high boiling point, heat sensitive and easily oxidized materials;

2. Effectively remove substances in liquid, such as organic solvent and odor, which is a very effective method for the desolvation of liquid after solvent extraction;

3. The product can be evaporated selectively to remove other impurities. More than 2 substances can be separated at the same time through multistage separation;

4. It can effectively remove light molecular substances (deodorization), heavy molecular substances (decolorization) and impurities in the mixture;

5. The separation process is a physical separation process, which can well protect the separated substances from pollution, especially maintain the original quality of the natural extract;

6. There is no boiling and bubbling phenomenon. Molecular distillation is free evaporation on the surface of the liquid layer. It is carried out under low pressure and there is no dissolved air in the liquid. Therefore, the whole liquid cannot boil and there is no bubbling phenomenon in the distillation process;

7. High separation, higher than traditional distillation and ordinary thin film evaporator;

8. Easy to form continuous production and simple operation;

9. Molecular distillation has a short evaporation range, the average free path of the molecule is generally no more than 25mm, and the energy consumption is small.

10. The feed tank can optionally realize the pre heating function, and the preheating temperature can be adjusted;

11. Each interface is sealed with fluororubber gasket with good air tightness. If the customer needs corrosion resistance, it can be replaced with Teflon material.

應(yīng)用范圍Application Scope：

l 可代替常規(guī)降膜蒸發(fā)器，用于石化及化工產(chǎn)品的蒸餾、提純、濃縮、脫色使用；

l 尤其適用于熱敏性，易氧化化學工業(yè)品的蒸餾精制；

l 也可用于高沸點產(chǎn)品的蒸餾分離；

l instead of conventional falling film evaporator, it can be used for distillation, purification, concentration and decolorization of petrochemical and chemical products;

l it is especially suitable for distillation and refining of heat sensitive and easily oxidized chemical industrial products;

l it can also be used for distillation and separation of products with high boiling point;

典型應(yīng)用Typical Applications：

l 多不飽和脂肪酸（油酸、亞麻酸、魚油脂肪酸（乙酯）及其衍生物的蒸餾精制；

l 單甘脂的精制；

l 二聚酸的精制；

l VE、植物甾醇的精制；

l 液晶的蒸餾；

l 高分子聚合物脫除單體；

l 其他熱敏性產(chǎn)品的精制；

l distillation and refining of polyunsaturated fatty acids (oleic acid, linolenic acid, fish oil fatty acid (ethyl ester) and their derivatives;

l refining of monoglyceride;

l refining of dimer acid;

l refining of VE and phytosterol;

l distillation of liquid crystal;

l monomer removal by high polymer;

l refining of other heat sensitive products;

產(chǎn)品選型Product Selection

短程蒸餾的處理能力和原料（產(chǎn)品）的分子量，物料粘度、操作條件、蒸發(fā)器的有效換熱面積有直接關(guān)系。

常用進料速率：50-80 kg / (m2*h)

可選材質(zhì)：SUS304，SUS316L，SAF2205

工作溫度：最高近400℃

The processing capacity of short-range distillation is directly related to the molecular weight of raw materials (products), material viscosity, operating conditions and effective heat exchange area of evaporator.

Common Feed Rate: 50-80 kg / (m2*h)

Optional Materials: SUS304, SUS316L, SAF2205

Operating Temperature: up to nearly 400 ℃