Fundamental:

       Short-path distillation is a distillation process in which a liquid evaporated on a heating surface is condensed by a shortest distance to a condensation surface under high vacuum (<10 Pa) to achieve liquid-liquid separation. The distillation process is also referred to as molecular distillation when the distance between the heating surface and the condensation surface is less than or equal to the mean free path of the vaporized molecules under operating vacuum and temperature.

       Distillation process: the material enters the short-distance distiller from the upper flange cover, and the distribution disc is continuously and evenly distributed to the vertical heating surface of the cylinder. While the material is lowered by gravity, the rotating wiper device is forced to form a very thin surface on the heating surface. Turbulent liquid film. The evaporated molecules reach the built-in condenser over a short distance and condense, exit through the discharge port at the bottom of the evaporator, and the reformed portion enters the residue collection tank of the short path distiller and is discharged from the side outlet.

Performance characteristics:

◆High working vacuum and low distillation temperature

◆High heat transfer coefficient and high evaporation efficiency

◆ Short heating time

     The “no dead angle” design of the DZ series short-range distiller avoids the accumulation of materials in the distribution plate, heating surface and wiper system, and reduces the thermal polymerization and thermal decomposition of heat sensitive materials.

Structural features:

     The transmission and mechanical seal of the DZ series short-range distiller are specially designed and manufactured to meet the high-precision equipment for long-term stable operation. According to the working condition and material characteristics of the short-distance distiller, the reduction ratio of the transmission and the lubrication of the mechanical seal are determined. Mode (forced circulation lubrication, static lubrication) and mechanical seal cooling.

◆Evaporation cylinder is integrally formed without intermediate flange connection

◆The surface of the cylinder has high surface finish and is not easy to stick: the finish surface finish can reach Ra0.8μm, and the special polishing finish can reach Ra0.2μm.

◆Unique liquid distributor and splash-proof device design to ensure product quality

     The high-precision design and manufacture of the DZ series of short-range distillers ensures long-term smooth operation of the unit. The evaporation process is very gentle and produces little splashing and entrainment. In most cases, even without splash-proof devices, the product requirements can be met. When dealing with certain special materials and special requirements for products, the DZ series short-range distiller's splash-proof device can ensure the product quality more reliably.

◆ A variety of scraper formats are available, and the range of use is wide:

     Oblique groove scraper type, drum type, metal hinge type, fixed scraper type, etc.

Scope of application and typical applications:

     Distillation, purification, concentration, decolorization of petrochemical and chemical products; distillation and refining of heat-sensitive and easily oxidized chemical industrial products; distillation separation of high-boiling products. Such as: distillation purification of polyunsaturated fatty acids (oleic acid, linolenic acid, fish oil fatty acid (ethyl ester)) and its derivatives; purification of monoglyceride; purification of dimer acid; refining of VE, plant sterol; Removal of the stripping liquid; removal of the monomer by the polymer; preparation of the wax of the coal-based oil, and the like.

product model:

     Conventional feed rate: 100 kg / (m2·h)

     Minimum specification: DZ-4800 Effective evaporation area 48 square

Note: The main cylinder and jacket material can be selected according to actual needs or user requirements; (equipment materials: SUS304, SUS316L, SAF2205, and Hastelloy, etc.)

   The jacket and the cylinder are designed according to the process requirements;

   The above dimensions are for reference only, the actual size is subject to the drawings provided by our company;

   The weight of the above equipment is offensive reference. The actual weight is based on the actual product. The total weight of the equipment does not include the weight of the material.

       Operating temperature: up to 350 ° C (depending on the process and the choice of heating medium).