Compared to traditional high-temperature evaporation and multi-effect evaporation technologies, low-temperature evaporation equipment demonstrates significant advantages in core performance and application adaptability. Firstly, it offers superior protection for heat-sensitive materials. Traditional high-temperature evaporation (such as single-effect evaporation) requires operation above 100°C, which readily leads to the degradation of vitamins, proteins in foodstuffs, or active pharmaceutical ingredients in the pharmaceutical industry. Low-temperature evaporation, however, reduces evaporation temperatures to 30–60°C through vacuum conditions, maximising the retention of original material components and quality. For instance, it minimises flavour loss in juice concentration and preserves the activity of vaccines and enzyme preparations in the biopharmaceutical sector – core advantages unattainable with high-temperature evaporation.

Secondly, it offers superior energy efficiency and operational stability. While multi-effect evaporation reduces energy consumption through multiple heat recovery stages, its complex equipment structure, large footprint, and sensitivity to feed concentration fluctuations make it prone to scaling and blockages. Low-temperature evaporators predominantly utilise heat pump technology, achieving 40%-60% higher energy utilisation than traditional single-effect evaporation. They also require minimal steam supply, resulting in lower operating costs. Concurrently, the low-temperature environment mitigates chemical reactions between materials and equipment components, slowing scale formation on evaporator surfaces and reducing shutdown frequency for cleaning. This extends continuous operational cycles by over 30% compared to MEV systems, significantly lowering maintenance expenses.

Moreover, it offers greater environmental compatibility and broader application scenarios. During high-temperature evaporation, elevated temperatures may cause organic wastewater to emit harmful gases (such as volatile organic compounds), complicating exhaust gas treatment. Low-temperature evaporation reduces harmful gas emissions and can process high-salinity, high-concentration organic wastewater (e.g., chemical wastewater, landfill leachate) without the frequent process parameter adjustments required by traditional technologies. For small-batch, multi-category material processing (e.g., laboratory sample concentration, medical wastewater treatment), low-temperature evaporation equipment offers a more compact footprint and greater operational flexibility. Conversely, technologies like multi-effect evaporation are better suited to large-scale, continuous processing of single materials, making them ill-suited to meet the demands of flexible, specialised applications.