It is a kind of high-efficiency and energy-saving evaporation equipment, especially suitable for dealing with high viscosity, heat-sensitive, easy to crystallise and easy to scale materials. Its working principle is to scrape off the concentrated liquid film formed on the heating surface through the scraper system continuously to prevent coking and clogging and ensure the continuous and stable evaporation process.

Structure composition

  ●Heating system: provide heat energy for evaporation process, the common heating method is steam heating, the heating jacket is wrapped in the outer side of the evaporator cylinder, there are also other heating media such as heat-conducting oil.

  ●Scraper system: It is composed of scraper and rotating shaft, and is the core part of the equipment. The scraper is installed on the rotating shaft, rotating with the rotating shaft, constantly scraping off the concentration film formed on the heating surface, preventing coking and clogging, to ensure that the evaporation process is continuous and efficient.

  ●Evaporation room: the main place of material evaporation, where the material to be evaporated forms a film and evaporates by heat.

  ●Condensation system: used to collect the evaporated vapour and convert it into liquid products, usually composed of condenser, cooling medium, etc..

  ●Transmission device: drive the scraper rotation, generally consists of motor, reducer, etc., to provide power for the scraper.

  ●Control system: monitor and adjust the whole evaporation process, including temperature, pressure, liquid level and other parameters of the control, to ensure the stable operation of the equipment.

Working principle

  The material to be evaporated is sent into the evaporation chamber, forming a film on the heating surface. The heating system provides thermal energy to make the material film evaporated by heat, and at the same time, the rotating scraper of the scraper system constantly scrapes off the concentrated liquid film on the heating surface to keep the heating surface clean and efficient heat transfer effect. The evaporated vapour is collected and converted into liquid product through condensation system, while the concentrated material remains in the evaporation chamber and continues to evaporate until it reaches the required concentration.

Performance characteristics

  ●Low-temperature evaporation: evaporation operation can be carried out under low temperature, especially suitable for heat-sensitive materials, which can reduce the loss of heat-sensitive components in the materials and maintain the natural flavour, nutrients and activity of the products.

  ●High-efficiency evaporation: the scraper constantly scraping the material on the heating surface is a film-like turbulence, greatly improving the heat transfer coefficient, accelerating the evaporation speed, and improving the evaporation efficiency.

  ●Prevent coking and blocking: the scraper scrapes off the concentrated liquid film in time, effectively preventing the material from coking, scaling and blocking on the heating surface, ensuring the continuous and stable operation of the equipment.

  ●Short overflow time: the residence time of the material in the evaporator is short, about 10 seconds, which can prevent the product from decomposition, polymerisation or deterioration in the process of evaporation, and it is especially suitable for dealing with easily deteriorated materials.

  ●Strong adaptability: it can deal with materials with high viscosity, containing particles, heat-sensitive and easy to crystallise, with a wide range of applications, it can meet the evaporation needs of different industries and materials.

Application Fields

  ●Chemical industry: used in the production of fine chemical products, petrochemical separation and purification, such as resins, adhesives, coatings, lubricants, synthetic rubber and other production processes.

  ●Pharmaceutical industry: widely used in the concentration, purification and drying of drugs, suitable for biological products, antibiotics, traditional Chinese medicine extracts and other heat-sensitive drug production.

  ●Food industry: used in the concentration of fruit juice, beverage, dairy products, food additives, etc., can retain the maximum degree of nutrients and flavour substances.

  ●Environmental protection industry: it can deal with high concentration organic wastewater, concentrate organic matter in wastewater for further treatment or recycling, and can also be used in rubbish leachate treatment, solvent recovery and other fields.

  ●Other industries: in the paper industry, it can be used for the concentration and treatment of pulp black liquor, and in the field of new energy, it can be used for the concentration and purification of electrolyte of lithium-ion battery.

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