Multiple Effect
Falling Film Evaporators from Shachi

Shachi Engineering is one of the top manufacturers of falling film evaporators in India. We are a two decades-old company with a long experience in manufacturing a wide range of solutions. Our industrial drying, cooling, and evaporation solutions include thin film evaporator solutions, falling film evaporator and agitated thin film dryer. Designing a falling film evaporator requires skill and experience. At Shachi our design process for the falling film evaporator starts with building a thorough understanding of your requirements and processes by which they can be met.

Our experience endows us with strong process expertise and enables us to deliver products of world class quality. Along with an experienced team, we also bring to the table tried and tested designs made using advanced simulation technology. Factors such as energy-efficiency, environmental impact, and ease of operation and maintenance are prime guiding principles of machine design at Shachi. We deliver customized solutions to help you precisely achieve the desired product quality.

Working principle of falling film evaporators

A falling film evaporator is essentially a shell & tube type of heat-exchanger used to evaporate heat sensitive liquids. The feed enters the evaporator through the top of the unit. It is then distributed evenly in the unit’s heating tubes. The liquid flows through tubes and forms a thin film on the walls of the tube while being partially evaporated. The heat is provided through the heating medium (generally steam) to ensure high heat-transfer coefficient. The liquid and the vapor then flow downwards under the pull of gravity. The co-current vapor flow serves to augment the downward movement of the liquid. Concentrated product and its vapor are then separated from each other at the bottom of the falling film evaporator unit.

Two critical factors considered in the designing of Shachi's falling film evaporators are

  • Maximum heat transfer in the least time so as to minimize the residence time of the feed
  • The uniform distribution heat to ensure that the feed transfer is free of clump-formation or fouling on the inner side of the walls.

A standard process followed while material selection which takes into account the feed properties ensures high & efficient heat transfer. The distributor head which feeds into the tubes is designed to ensure uniform wetting of the tube surfaces thus avoiding any crusting which is the root of major maintenance problems pertaining to falling film evaporators. Shachi's high end design capabilities clubbed with meticulous manufacturing practices ensure that your process happens just the way you designed it.

Falling Film Evaporator For Process Industry


  • Food & Beverages
  • Pharmaceuticals
  • Papers
  • Dairy Industry
  • Fit for products with low fouling property
  • Chemical industry

Benefits to the customer

Minimal thermal degradation due to short product contact time

with advanced analysis

Highly energy efficient for multiple effect designs

manufacture and commission evaporator for any capacity

Reduced foaming due to high vapor shear

with world class quality

Little to no fouling due to low tube wall temperature

to provide you continuous

Fit for heat sensitive product

with lesser cleaning and maintenance