This evaporator is suitable for the low-temperature continuous concentration of heat-sensitive materials under vacuum conditions. It consists of a heater, evaporator chamber, hydraulic ejector, multi-stage water pump, water tank, circulating discharge pump, and control panel, with all material-contacting parts made of stainless steel. It features a compact design, high efficiency, low cost, and is considered an ideal concentration equipment.

Technical Parameters

Advantages

  Energy and Water Saving
The MVR evaporator saves more than 80% of energy compared to traditional evaporators and reduces over 90% of condensed water, thereby minimizing the required space by over 50%.

  High Steam Utilization
The secondary steam is fully utilized, making the economic efficiency of live steam equivalent to the 30-effect of multi-effect evaporation. This reduces the need for external heating and cooling resources, lowers energy consumption, and reduces pollution.

  Gentle Evaporation
Since the heat source is provided by a compressor, the temperature difference is much smaller than traditional evaporators, enabling gentle evaporation, greatly improving product quality and reducing scaling.

  Simple and Reliable
No need for a condenser or only a small condenser is required. The structure and process are very simple, with fully automatic operation. It can run continuously, ensuring safety and reliability.

  Minimal Heating Denaturation
This evaporator operates at a low temperature (evaporation temperature 40°C-100°C), ensuring uniform material flow, no material loss, minimal fouling, and minimal heating denaturation of the product.

  Scraper Heater Structure
The scraper heater structure provides a high heat transfer coefficient, large evaporation capacity, and evaporation intensity that can reach 200 kg/m²·hr with high thermal efficiency.

  Short Material Heating Time
The material heating time is short, about 5 to 10 seconds, and it works under vacuum conditions, which is beneficial for heat-sensitive materials. It ensures that the various components remain undamaged and guarantees product quality.

  Wide Viscosity Adaptability
The system can handle a wide range of viscosities, with material viscosities reaching up to 100,000 centipoise (CP).

  Compact Footprint
The equipment has a small footprint, a simple structure, easy maintenance, and is easy to clean.

  Reduced Vacuum Resistance
Due to its unique evaporation method, the treated material forms a film only on the evaporation surface, without accumulating on it. This eliminates the issue of static liquid column pressure that affects the vacuum degree in other evaporation methods.

  High Evaporation Intensity
The increased vacuum degree lowers the boiling point of the treated material, enhancing the temperature difference between the hot and cold media. The scraper's forced action makes the liquid film turbulent and thinner. The scraper's self-cleaning effect prevents the buildup of scale on the heating surface, increasing the heat transfer coefficient and improving evaporation intensity.

  Short Heating Time
As a special falling film evaporator, the material's residence time on the heating surface is very short, about 10-60 seconds (depending on the specification), making it ideal for heat-sensitive materials.

  Large Operational Flexibility
The amount of material entering the evaporator per unit time determines the thickness of the liquid film formed on the heating surface. As the scraper evaporator's liquid film is forced into formation by the scraper, the feed rate can be adjusted over a wide range.

真空阻力降小
由于其独特的蒸发形式，被处理物料只在蒸发面上成膜，不在蒸发面上积聚，因此，没有其它蒸发形式中的液柱静压抵消真空度的问题（其它的蒸发形式中真空度只反映了系统中液相主体表面的真空度），系统显示的真空度就是物料蒸发的真空度。

蒸发强度大
 真空度的提高，降低了被处理物料的沸点，加大了冷热介质的温差推动力，刮板的强制作用又使液膜呈湍流且变得更薄，刮板的自清洁作用抑制了加热面上的垢层的形成，加大了传热系数，提高了蒸发强度。

受热时间短
由于刮板蒸发器就是一种特殊的降膜蒸发器，因此，物料在加热面上的停留时间很短，约10-60秒（根据规格不等而不同），特别适用于处理热敏性物料。

操作弹性大
单位时间进入蒸发器物料的多与少，决定了加热面上形成液膜的厚度，由于刮板蒸发器的液膜是靠刮板强制形成，因此进料量可在很大范围内调节。

Equipment Introduction
The forced external circulation concentration equipment is used for vacuum concentration of heat-sensitive, high-viscosity materials. It can also be applied to materials with high viscosity or high solid content. With hourly evaporation capacities of 1000KG, 2000KG, 4000KG, 12000KG, and 20000KG, the equipment is independently manufactured by integrating Italian technology.

Structural Features
This equipment consists of a heater, evaporator chamber, and circulation system. Thanks to its unique design, it offers extremely high stability, ensuring a high final product concentration, good color, and excellent quality. Depending on the production requirements and product characteristics, single-effect, double-effect, or multi-effect evaporators can be selected.