Falling-Film Evaporator and Concentrator

Fall film evaporator-concentrator | Continuous film-type low-temperature vacuum concentrator for heat-sensitive materials

💡 The falling-film evaporator is a specialized piece of equipment for membrane vacuum evaporation. The feed solution forms a uniform film and evaporates at low temperatures from top to bottom, with an extremely short residence time for the material. It is highly efficient for concentrating heat-sensitive, foam-prone, and high-viscosity feed solutions, and supports single/ double-effect, or triple-effect energy-saving configurations and are widely used in pharmaceutical, botanical extraction, and food and health supplement production lines.

I. Product Overview

A falling-film evaporator is a type ofMembrane Vacuum Evaporation EquipmentThe feed enters from the top, forming a uniform film on the inner wall of the heating tube as it flows downward, while heat transfer and evaporation occur rapidly. The equipment features extremely short heating times, high evaporation rates, and resistance to coking and scaling. It is particularly suitable for the concentration of heat-sensitive, foam-prone, and high-viscosity materials, and is widely used in the pharmaceutical, plant extraction, food, and health supplement industries for the concentration of extraction liquids, clear extracts, fermentation broths, and other materials.

II. Structural Configuration Description

The equipment consists primarily of a film distributor, a heating chamber, a separation chamber, a condenser, a collection tank, a vacuum system, and a control system. It can be designed to meet specific production capacity and energy consumption requirements.Single-effect, double-effect, triple-effectMultiple configuration options, fully enclosed sanitary-grade construction:

✅ Top-mounted uniform film application device

The feed solution is distributed evenly, forming a complete, continuous liquid film on the tube wall, which significantly improves overall heat transfer efficiency and prevents localized high temperatures caused by dry walls.

✅ Short-residence-time membrane heat exchanger design

The feed solution flows rapidly downward, resulting in an extremely short exposure time to heat, which prevents heat-sensitive materials from caramelizing and minimizes the degradation and loss of active ingredients at the source.

✅ High-Efficiency Gas-Liquid Separation Unit

The multi-stage demisting and separation design eliminates material carryover, significantly improving the recovery rates of organic solvents and finished liquid products.

✅ Sanitary-grade complete system with CIP cleaning

The interior surfaces of the equipment are mirror-polished with no blind spots, and the piping features quick-connect fittings, allowing for full integration with a CIP (Clean-in-Place) system to ensure residue-free, hygienic production.

III. Key Features

✅ Short-term membrane evaporation to preserve heat-sensitive active ingredients

The feed solution undergoes film formation and flow for an extremely short period of time, thereby maximizing the retention of natural active compounds in traditional Chinese medicine, fruit juices, and biological raw materials under vacuum and low-temperature conditions.

✅ High evaporation rate, suitable for complex materials

With high heat transfer area utilization and fast evaporation rates, it is specifically designed for various difficult-to-process liquids, including those with high viscosity, as well as those prone to foaming and foaming.

✅ Operates at low temperatures under vacuum, making it resistant to scaling and coking

Gentle negative-pressure evaporation is maintained throughout the process, with the liquid film continuously renewing itself on the tube walls, thereby reducing the likelihood of material adhesion, carbonization, and scaling, and extending the equipment’s continuous operating cycle.

✅ A combination of multiple functions in series, offering outstanding energy-saving and consumption-reduction benefits

Dual-effect and triple-effect units can be constructed, with secondary steam recycled for reuse, significantly reducing steam consumption; this makes them suitable for large-scale, continuous mass production projects.

✅ Manufactured entirely from stainless steel in compliance with sanitation standards

Constructed entirely of 304/316L stainless steel, with polished surfaces inside and out leaving no blind spots, it fully complies with GMP standards for pharmaceutical and food production safety.

✅ Fully automated, continuous, and stable operation

The entire system features automatic control and interlocking mechanisms, enabling 24-hour uninterrupted continuous concentration production. It operates smoothly and requires minimal manual supervision.

IV. Scope of Application

Widely used in the pharmaceutical, herbal extraction, food, health supplement, daily chemical, and fine chemical industries, specifically forHeat-sensitive extracts, high-viscosity clear pastes, fermentation broths, and foaming solutionsProvides stable, low-temperature vacuum continuous concentration solutions.

V. General Technical Specifications

VI. Service Commitment

We provide end-to-end, one-stop implementation services: equipment selection and matching based on operating conditions, customized concentration process design, in-house manufacturing of complete units, on-site installation and commissioning, process training for operators, and lifetime after-sales maintenance and support. We support custom solutions tailored to various production capacities and material conditions. We offer nationwide delivery of complete units and provide rapid on-site inspection and maintenance services in the Southwest region of Chongqing.

🔗 Recommended Compatible Devices

Complete Membrane Concentration Line Configuration:
✅ Extraction of raw materials from the front end:Extraction equipment
✅ Online Equipment Cleaning:CIP (Clean-in-Place) System
✅ Purification and Impurity Removal from Feed Solutions:Separation and Purification Equipment