Evaporation

Evaporator technology varies from tubes to plates, inside versus outside, and up, down or flooded. Systems may have a single effect or multiple effects. Most requirements involve the efficient use of heat from steam to evaporate water from a process liquid to either recover chemical or purify the water or both.

Mechanical vapour re-compression, external product pre-heaters, and multi-stage condenser systems may be incorporated into the process.

Design considerations:

• Tubular design for reduced maintenance requirements
• Rising film technology, where appropriate, for simplicity and low installed cost
• Falling film technology under more rigorous conditions
• Flooded forced circulation technology with enhanced flow characteristics for the most difficult to handle liquids and slurries
• Positive noncondensible gas venting
• Innovative condensate segregation
• High efficiency entrainment separators to reduce soda losses
• Foaming control
• Integration of condensate stripping systems

For applications ranging from black liquor evaporators for the pulp and paper industry, sugar refining, alcohol, and Produced Water from the oil & gas industries, A.H. Lundberg Systems offers the knowledge and experience to be able to choose the best technology for each application.