脱膜式蒸发器,容量范围高达150t/h,占地面积要求相对较小,是最广泛用于加工工业的蒸发器。
特别适用于对温度敏感的产品、含有少量固体且具有低至中度硬壳倾向的液体。
要浓缩的液体被供应到加热管的顶部,并以一种向下流动的方式分布在管壁的内侧。
由于加热管的外部加热,液膜开始沸腾并因此部分蒸发。最初由重力引起的向下流动,由于形成的蒸汽平行向下流动而增强。
残余液膜液体和二次蒸汽在列管的下部和环绕式或横向布置的离心分离器中分离。至关重要的是,整个液膜的加热表面,尤其是下部区域,均匀且充分地被液体润湿。如果不是这种情况,则会产生干点,从而导致结壳和沉积物的堆积。
若要完全润湿,为降膜蒸发器的头部选择合适的分布系统至关重要。通过使用更长的加热管、将降膜式蒸发器分成几个隔室或通过再循环产品来提高润湿率。


降膜式蒸发器采用 MVR 加热
GEA’s past fiscal year was one of significant growth and further profitability gains. In particular, the technology group substantially increased order intake, with all divisions contributing here. GEA also made progress in all Mission 30 strategic growth areas. In addition, GEA met key interim targets under its climate plan ahead of schedule. Major milestones in fiscal year 2025 were admission to the DAX index, the award of one of the largest contracts in the company’s history, and streamlining of the corporate structure.