Thin-film evaporator is a type of evaporator. It is characterized by the material liquid flowing along the heating tube wall in a film shape for heat transfer and evaporation. The advantages are high heat transfer efficiency, fast evaporation speed, and short material residence time, so it is especially suitable for heat sensitivity. Evaporation of substances.

According to the different reasons of film formation and flow direction, it can be divided into rising film evaporator and falling film evaporator. Three types of wiped film evaporator. The thin-film evaporator unit consists of three parts: evaporator, vapor-liquid separator, preheater and a simple separator. The evaporator is a rising film tube heat exchanger.

The evaporator has the characteristics of large production capacity, high efficiency, and short heating time of materials. It is suitable for the concentration of dilute solutions in the pharmaceutical, food, chemical and other industries. The parts in contact with the materials are made of stainless steel, which has good corrosion resistance. It is durable and meets the requirements of pharmaceutical hygiene.

In the selection of thin film evaporators, various factors must be considered. Generally, production capacity and operating parameters must be considered, including throughput, inlet and outlet concentration, temperature, annual operating hours, etc.; product characteristics, including heat sensitivity, viscosity and flow Properties (at operating temperature), foamability, solid content, crystallization and polymerization tendency, etc.

In addition, there are operating media, such as steam (pressure), cooling water (temperature), cleaning fluid (solvent), etc.; material selection and surface polishing requirements for manufacturing; site conditions, such as space, climate (outdoor), energy and product connection , Work platforms, etc.; also include regulations on safety, noise, and environmental protection.