Rising Film Evaporators

Artisan Rising Film Evaporators for Preheating, Preconcentration, and Difficult Materials

Artisan Rising Film Evaporators are applied in preheating and preconcentration processes across chemical, polymer, food, and pharmaceutical applications where material behavior, heat transfer, and evaporation performance must be carefully balanced. Artisan engineers specify and configure each evaporator system around the customer’s operating conditions, material characteristics, process objectives, and integration requirements.

In operation, feed enters the evaporator on the tube side from the bottom and is heated as it moves upward. Vapor formation creates a rising film along the tube wall, while ascending vapor bubbles carry liquid and vapor through the tubes in parallel flow. This upward movement generates turbulence in the liquid phase, making rising film evaporation especially useful for materials that become highly viscous or have a tendency to foul heat transfer surfaces.

Is your material difficult to preheat or preconcentrate? Request a feasibility assessment.

Key Features

What Makes Artisan Rising Film Evaporators Different

Vapor-Driven Upward Flow

Feed enters from the bottom of the tube side and rises as vapor forms, creating parallel liquid/vapor movement through the evaporator for strong heat transfer.

Turbulence for Difficult Materials

The upward movement of vapor bubbles generates turbulence in the liquid, which is valuable for high-viscosity products and materials prone to fouling.

Preheating & Preconcentration Performance

Rising film Evaporation is well suited for applications where materials need to be heated, partially concentrated, or prepared for downstream processing.

Customizable Evaporator Configuration

Artisan designs and supplies Rising Film Evaporators, with customizations available based on product behavior, operating conditions, and customer requirements.

Technical Capabilities

Artisan Rising Film Evaporators are well suited for applications where feed behavior, viscosity development, heat transfer requirements, and fouling tendency must be carefully considered. The turbulent upward flow generated during operation can improve evaporation performance for products that challenge other evaporator arrangements.

Consistent preheating and preconcentration of process materials
Handles materials that develop high viscosity during processing
Suited to products prone to fouling heat transfer surfaces
High-temperature evaporation capability
Better steam economy than Falling Film Evaporators, depending on the process
Comparatively low capital cost for appropriate applications
Convertible to a forced circulation configuration if requirements change
Special vapor separator configurations available for foaming products
Deposit removal aided by adjusting feed rate or heat input

Where Rising Film Evaporators Are Applied

Industries Served

Artisan Rising Film Evaporator Technology. Your Preconcentration Application.

Applications involving preheating, preconcentration, viscosity changes, fouling tendency, or foaming behavior depend on the relationship between feed characteristics, heat input, vapor formation, and downstream process needs. Artisan’s engineering team can review those variables and determine whether a Rising Film Evaporator is the right equipment approach for your material and operating goals.

Contact an Engineer →

Technical Specifications

Design, Processing & Operating Parameters

Flow Configuration

Feed enters the tube side from the bottom and moves upward as vapor forms, creating parallel liquid and vapor flow through the evaporator tubes.

Steam Economy

Rising film evaporators can provide better steam economy compared with falling film evaporators, depending on the process.

Heat Transfer Behavior

As feed is heated, vapor formation creates a rising film on the tube wall, promoting heat transfer during preheating and preconcentration.

Conversion Flexibility

The system offers versatility to change to a forced circulation type evaporator if product behavior is likely to change.

Viscosity Handling

Rising film evaporation is ideal for liquids that attain high viscosity during processing and require turbulence to help maintain effective heat transfer.

Deposit Removal

Deposits can be removed more easily by increasing feed rate or reducing heat input, depending on the material and operating conditions.

Fouling Management

The upward turbulence generated during operation can benefit products with a tendency to foul heat transfer surfaces.

Foaming Product Options

Special vapor separator configurations are available for foaming products.

Temperature Capability

Suitable for high-temperature applications where rising film evaporation aligns with material behavior and process requirements.

Request a Quote for Rising Film Evaporators

Our engineering team can assess your feed characteristics, operating conditions, and concentration goals to determine whether a rising film evaporator is suited to your process. We respond within one business day.