Évaporateurs à film ascendant et descendant

Name: Évaporateurs à film ascendant et descendant
Brand: Buflovak
Availability: InStock

The Buflovak Rising Falling Evaporator or Concentrator (RFC) delivers high tube velocities which assures uniform product distribution and high coefficients of heat transfer. These concentrators are suitable for evaporating liquids that are heat sensitive and require minimum process time, pure or non-crystal forming, low to medium viscosities, foamy, and those containing fine suspended solids.

Détails du produit

The rising falling film evaporator (RFC), or recirculating version (RRFC), works on uniform metered flow entering the bottom of the steam chest and rises through the first pass with rapidly increasing velocity. After leaving the first pass the flow of the vapor liquid mixture is reversed and directed downward through the second pass at extremely high velocity. The mixture then enters the separator where the vapor and liquid are separated.

When not designed as a circulation unit, the rising falling film evaporator provides once through evaporation of heat sensitive materials, requiring minimum retention time. It is particularly adaptable to multiple effect systems but provides a lesser turn-down capability than the RRFC configuration.

CARACTÉRISTIQUES ET AVANTAGES

Rising Falling Film Evaporator

High tube velocoties minimize fouling.

Designed to achieve high concentrations at low temperatures

Liquid passes directly out of steam chest rather than being re-entrained with vapor from the separator to significantly reduce entrainment.

System may be turned down without loss of efficiency or effectiveness.

RFC’s quick holding time provides maximum efficiency.

Low headroom requirement for space-constraining installations.

RFC evaporator design handles thixotropic materials.

Indiquez vos exigences en matière de conception

Exigences en matière de conception

rising-falling-film-concentrator-recirculating-RRFC-schematic

RRFC (Recirculating) Configuration

rising-falling-film-concentrator-RFC-schematic

RFC (Once Though) Configuration

Téléchargements

Buflovak-Evaporation-Distillation-Separation Group Brochure
Capabilities Brochure

Our experienced application engineers are ready to address your rising-falling film evaporation process and equipment needs.

Rising–Falling Film Evaporators – FAQs

What is the advantage of combining rising and falling film evaporation?

This hybrid design increases liquid velocity and heat-transfer efficiency, enabling faster evaporation and better handling of heat-sensitive materials.

What types of materials are suitable for rising–falling film evaporators?

They are ideal for low- to medium-viscosity liquids, heat-sensitive materials, foamy solutions, and liquids containing fine suspended solids.

How do these systems reduce fouling and scaling?

High tube velocities help prevent buildup on heat transfer surfaces, improving operational reliability and maintaining consistent evaporation performance.

Can rising–falling film evaporators be used in multi-effect systems?

Yes. They are commonly integrated into multi-effect evaporation setups to increase energy efficiency and throughput.

What industries use rising–falling film evaporators?

Applications include sugar processing, juice concentration, chemical manufacturing, pharmaceuticals, and specialty ingredient production.

Essais et location de laboratoires

Testez vos matériaux dans l'une de nos installations d'essai à l'échelle pilote de classe mondiale. Le centre de recherche et d'essai Buflovak situé à Tonawanda, dans l'État de New York, donne accès à plusieurs séchoirs, floconneuses, unités à tambour simple et double, ainsi qu'à des tambours en fonte et chromés. Le centre d'innovation et le laboratoire d'essai de CPEG à Louisville, dans le Kentucky, donnent accès à une variété de technologies supplémentaires d'équipement de traitement pour le traitement en plusieurs étapes. Il est possible de louer des laboratoires lorsqu'il n'est pas possible d'effectuer des essais dans l'une de nos installations.