Thin film evaporation device

The scraper type thin film evaporator is a new type of high-efficiency evaporator that uses a rotating scraper to forcibly form a film for exchange based on the boiling point difference of each component in the mixture, and quickly passes through the heating surface for thermal separation under vacuum conditions. The material is added to the evaporator from above the heating zone, distributed to the heating surface of the evaporator through a liquid distributor, and pushed downwards in a spiral shape. During this process, light components are evaporated to form an evaporative vapor stream that rises and passes through a gas-liquid separator before being transferred to an external condenser for condensation and collection. Heavy components are discharged from the bottom of the evaporator

　　Working Principle:

　　The scraper type thin film evaporator is a new type of high-efficiency evaporator that uses a rotating scraper to forcibly form a film for heat exchange based on the boiling point difference of each component in the mixture, and quickly passes through the heating surface for thermal separation under vacuum conditions. The material is added to the evaporator from above the heating zone; The material is distributed to the heating surface of the evaporator through a distributor, and then the rotating scraper system continuously and uniformly distributes the material on the heating surface, and pushes it downwards in a spiral shape. During this process, light components are evaporated to form a steam stream that rises and is transferred to an external condenser for condensation and collection after passing through a vapor-liquid separator; The heavy components are discharged from the bottom of the evaporator.

　　

　　Application fields:

Scrap film evaporators have been used in the following fields for the purpose of evaporation concentration, desolvation, stripping, reaction, degassing, deodorization, etc., and have achieved good results:

Chinese and Western medicine: antibiotics, sugar solution, Chinese herbal medicines such as Leigongteng and Huangqi, intermediates such as methyl imidazole and mononitrile amine; Light industrial food: juice, gravy, pigment, essence, spice, enzyme preparation, lactic acid, xylose, starch sugar; Oil and daily chemical products: Phosphatidyl esters, VE， Oleic acid, glycerol, fatty acids, waste lubricating oil, alkyl polyglycosides; Synthetic resins: polyamide resin, epoxy resin, polyformaldehyde, PPS (sebacic acid polypropylene ester), PBT Synthetic fibers: PTA, DMT, carbon fiber, poly *, polyether polyol, etc;

Petrochemical: TDl, MDI, Trimethylhydroperoxide, Trimethylolpropane, *, etc;

Pesticide organisms: herbicides such as acetochlor, propiconazole, dung beetle, furan phenol, and chlorfenapyr, insecticides, herbicides, wastewater: inorganic salt wastewater, etc.

　　Thin film evaporation deviceperformance advantage：

▲ Low evaporation temperature ▲ High evaporation intensity ▲ Short heating time ▲ High operational flexibility

A complete thin film distillation apparatus includes:

● Thin film evaporator ● Heating system ● Material pretreatment unit ● Cooling unit ● Vacuum unit ● Material collection unit, etc

When selecting, consideration should be given to the physicochemical properties and percentages of each component of the separated material, the purity requirements of each component after separation, and the experience of enterprise process research and equipment management. Xi'an Neuset can produce a complete set of thin film evaporation equipment according to the process drawings, and can also cooperate to conduct feasibility studies and process development. Based on the experimental results, reasonable process parameters can be designed and turnkey engineering services can be provided.

　　Thin film evaporation deviceIndustrial applications:

★ Degassing of materials before short-range distillation

★ Reboiler of distillation tower

Concentration of thermosensitive compounds

★ Concentration of biological extracts

★ Recycling and utilization of industrial waste

★ Removal of toxic substances in the food industry

★ Organic compound decolorization and odor removal

High precision removal of residual solvents in compounds