Molecular distillation is a special liquid-liquid separation technology, which is different from the separation principle of traditional distillation depending on boiling point difference. It is depending on the difference of molecular mean free path to separate different matters. Here, molecular mean free path (λ) refers to the path between a molecule strikes two times.
When the mixture of liquid flows along the heating board and is heated, light and heavy molecule will leave the surface of liquid and enter the 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 putting a condensation board at the proper position, light molecule can reach the board and will be condensed, then be discharged along the condensation board; while the heavy molecule will not reach the board and be discharged along the heating board.
Therefore, the objective of separation has been reached.
Vacuum Molecular Distillation Equipments
|Chart of Principle of Molecular Distillation||GMD -01(B)|
|Three Levels Molecular Distillation Experimental Apparatus||Three Levels Molecular Distillation Pilot Plant Equipments|
■ Advanced automatic control of continuous rectification section of molecular distillation, the equipment can separate natural matters, complex components and matters with a smaller molecular weight difference.
■ Control the temperature of heating body by thermal superconducting technology. The temperature control accuracy can reach 0.5℃.
■ The equipment has a small size, simple piping, and short stating time and is easy to operate. The energy consumption of equipment is reduced by 25% compared with conduction oil to heat.
■ Oil diffusion pump with unique bundling nozzles has a very high compression ratio, and the backpressure can reach more than 160 Pa, thus reduce greatly the demand for fore vacuum system. So the energy efficiency ratio is improved and at the same time the cost of production and maintenance is reduced.
■ Highest temperature of the system can reach 400℃
► Stainless steel material for distillation equipment can choose AISI304, AISI316L, AISI2205
■ Operation temperature is low (lower than boiling point), with high vacuum (no load ≤1Pa), heating time is short (several seconds) thus no thermal decomposition occurs and the efficiency of separation is high. Specially, it is adapted to separation of high boiling point, heat-sensitive and easy oxidized matters.
■ Removing low molecule matter (odor removal), heavy molecule matter (decolor) and impurities of mixture.
■ The course of molecular distillation is a physical separation, preventing separated matter from pollution, especially keeping original quality of natural extraction.
■ The separation degree is higher than the traditional distillation and common thin film evaporator.
■ Molecular distillation is suitable to realize continuous production and the operation is simple.
√ Fine Chemicals
√ Separation of nitric acid from organic high boiling liquids
√ Separation of butane (butyne) diol from high boiling liquids
√ Recovery of methanol from high boiling liquids
√ Recovery of xylenol (dimethylphenol) from a purification solution
√ Removal of hexane from PP and PE waxes
√ Drying of salt via the evaporation of water and solvent
√ Separation of phenol from bituminous coal pitch
√ Distillation of starting products for the production of insecticides
√ Separation of byproducts in the production of synthetic fibers
√ Distillation of TDI, HDI and MDI (isocyanates)
√ Final removal of toluene from epoxy resin
√ Separation of THF from polymers
√ Distillation of trimethylpentane from high boiling liquids
√ Recovery of solvents from synthetic resin production
√ Lactic acid, starch and sugar
√ Upgrading and distillation of lactic acid
√ Upgrading of tartaric acid derivatives
√ Concentration of sweetening agents
√ Concentration of modified starch
√ Concentration of active ingredient solutions
√ Distillation of pharmaceutical substances
√ Upgrading of substances for artificial feeding
√ Oleo chemicals, Fatty Acids, Biodiesel
√ Separation of dioxin from surfactants
√ Removal of free fatty acids from mon, di and triglycerides
√ Distillation of monoglycerides
√ Distillation of fatty acids from tall oil
√ Distillation of fatty acid methyl esters
√ Separation of residual glycerine from residues in biodiesel production (glycerine dryer)
√ Drying of industrial sludge
√ Drying & pre-concentration of municipal sewage sludge
√ Drying of hydroxide sludge
√ Drying of inorganic salt solutions
√ Drying of preliminary and intermediate products from chemical industry
√ Drying of suspensions, pastes and moist solids into powder
√ Drying of lubricants for forging industry
Effective evaporation area
※The above data is for reference only! In conclusion, the two rigid test conditions are ① a suitable vacuum ② heat preservation and material properties. ③（A）means standard model (B) means customized model
Symbol Instruction: ■ General Features, ► For Selection, ※Attention, — Non, ●Standard Equipped, ○Optional（Optional features should be stated in the order）