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Operating Principle of short path distillation

Molecular distillation is a special liquid-liquid separation technology, which is different from the traditional distillation principle according to boiling point difference. It depends on the difference of molecular mean free path to separate different matters. Molecular mean free path means the path between molecules striking two times. When the mixture liquid flows along the heating board and are heated, light and heavy molecule will become into vapor phase. Light and heavy molecule will have different moving distance when they are in vapor phase because they have different mean free path. Supposing that we put a condensation board at the proper position, Light molecule can reach the board and will be condensed, then be guided along the condensation board; while the heavy molecule cannot reach the condensation board and will be guided along the heating board. In this way, the objective of separation has been made.

Application of molecular distillation:

Molecular distillation, also called short-path distillation, is particularly useful in isolating components of heat-sensitive liquids or in separating substances with very high boiling points.

Characteristics of molecular distillation technology:

It is an advanced, new and high separation technology, which has following advantages:

1. Operation temperature is low (lower than boiling point), with reduced pressure (lower than 1Pa), heating time is short (several seconds) and the efficiency of separation is high.

2. Removing odor, color and impurities of mixture.

3. The course of separation is physical, preventing separated matter from pollution, especially keeping original quality of natural extraction. 4. The separation degree is higher than the traditional distillation. 5. Operating at a process pressures in the range of 0,001 mbar.

Invac process Laboratory Short Path Distillation System is a small Molecular Distillation System for R&D facilities.

It is invaluable in developing formulations, generating products and proving process separations involving Molecular Distillation Technology. Since small quantities of the materials are required, this versatile tool provides the means for isolating small quantities of your formulation for evaluation. The Single Stage Distillation Plant runs at 2 to 5 liters per hour, with shorter run times possible. This is a complete system including the feed vessel,

Short Path Evaporator and internal condenser, hot oil heater, condenser cooling system, cold trap, and vacuum system.

The Short Path Evaporator and internal condenser and product piping is constructed of high quality S.S the wiper basket and rotary vacuum pump are constructed of stainless steel. Gaskets are made of Viton®. Optional materials can be specified as required.

This is a complete system, ready to install in your laboratory. The system includes:

 Jacketed feed vessel

 Feed flow control metering

 Complete Short Path Evaporator with Internal Condenser Variable rotor speed

 Condensing media nozzle Product discharge system

 Condensate discharge system

 Round bottom flasks for distillate and residue Graduated receivers

 Complete Vacuum System

 Two stage rotary vacuum pump with exhaust filter,and electric diffusion pump Vacuum control valve and electronic vacuum gauge

 Cold Trap for liquid nitrogen or dry ice Hot Oil Heating System for evaporator Cooling System for condenser

 Stainless Steel Mounting Frame Power Supply.

Applications for the Short Path Distillation are:

Oil and Fat Industry:  Separation of free fatty acids from vegetable oil Fractionation of tall oil  Concentration of glycerol Isolation of monoglyceride  Purification and deodorization of fish oil

Petrochemical Industry:

 Separation of my crocristalline wax out of crude oil high vacuum pump residue  Fractionation of synthetic and petrochemical waxes to soft-and hard waxes

Environmental care:

 Purification of spent lubricants, brake fluids, glycerol and transformer oils  Recycling of dimethylsulfoxid (DMSO) mother liquors Processing of mother liquors in pharmaceutical industry and the production of advanced organic intermediates  Waste water concentration  Solvent recover

Chemical Industry:

 Purification of polyphenol compounds  Separation of aromatic amines from oxidized components and by products  Separation of long chain acid chlorides from impurities and free acids  Solvent separation from silicon oils  Concentration and purification of esters  Purification of organic esters  Concentration of herbicides and insecticides  Purification of candelilla wax and other natural waxes

Food Industry:

 Purification Elimination of terpens and concentration of ethereal oils  Separation of solvents from flavors Concentration of juices or extracts Concentration of tocopheroles  Concentration and isolation of lactic acid Concentration of capsicum

Pesticides produce:

 Purification and refining of pesticides and its intermediate

Polymer Industry:  Purification and concentration of monomers Purification and concentration of polymers Purification of softeners

Painting industry:  Subtractive solvent of polyurethane partial polymer and separation of TDI monomer Cosmetic industry:  Producing wool alcohols and wool acid of sheep oil Wiping off pesticides of cosmetic substrate Perfume compound and perfume material:

 Purification of synthetic and natural perfume compound and perfume material

Pharmaceutical and Food Industry:

 Separation and purification of the valuable product from solvent and by products  Separation of extracting solvent from plant and herbs extracts  Volume reducing of fermentation broth  Concentration of sugar / Glycose solutions and fruit pulps.

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