Description

Product Overview

The Ginger Juice Concentration Evaporator is a food-grade evaporation system designed to remove excess water from fresh ginger juice and produce concentrated ginger juice with a higher soluble solids content (°Brix).

Ginger juice is widely used in beverages, food seasonings, flavorings, functional drinks, and ginger-based food ingredients. Concentrating ginger juice helps reduce product volume, lower storage and transportation costs, and facilitate further processing and packaging.

As ginger juice contains natural aromatic compounds and heat-sensitive components, excessive heating may affect its flavor, aroma, color, and overall quality. Therefore, low-temperature evaporation is essential for ginger juice concentration, with the product evaporation temperature maintained below 65°C.

Our ginger juice concentration systems adopt single-effect falling-film evaporation or Mechanical Vapor Recompression (MVR) falling-film evaporation technology, combining efficient heat transfer, short product residence time, and automatic process control.

The equipment can be customized according to the customer’s processing capacity, initial Brix concentration, target concentration, and available utilities.

Working Principle

1. Low-Temperature Falling Film Evaporation

The falling-film evaporator operates under vacuum conditions, allowing water to evaporate at temperatures below 65°C.

Fresh ginger juice is evenly distributed into vertical heat transfer tubes through a specially designed liquid distributor. The juice flows downward along the inner surfaces of the tubes, forming a thin liquid film. Heat is transferred from the heating medium on the shell side, causing water to evaporate rapidly under reduced pressure.

The resulting vapor-liquid mixture enters a separator, where secondary vapor is separated from the concentrated ginger juice.

The falling-film design provides high heat transfer efficiency and short product residence time, helping minimize thermal exposure and preserve the natural characteristics of ginger juice.

2. Mechanical Vapor Recompression (MVR) Technology

For applications requiring higher energy efficiency, an MVR falling-film evaporator can be adopted.

During operation, secondary vapor generated by the evaporator is directed to a mechanical vapor compressor, where its pressure and temperature are increased.

The compressed vapor is then returned to the evaporator as a heating medium, releasing its latent heat through condensation to support further evaporation.

By recovering and reusing secondary vapor energy, MVR technology significantly reduces external steam consumption compared with conventional steam-heated evaporation systems.

The MVR system can be designed to maintain the required low-temperature evaporation conditions while improving overall energy efficiency.

3. Flexible Concentration Process

Depending on the required final Brix concentration and product characteristics, the system can adopt a single-stage or two-stage concentration process.

For applications requiring relatively high final concentrations, a two-stage configuration can be considered:

•  First Stage: MVR falling-film evaporation for initial concentration and removal of most of the water.

•  Second Stage: Single-effect vacuum evaporation for further concentration to the required final Brix level.

Both stages are designed to maintain the product evaporation temperature below 65°C.

This configuration combines energy-efficient evaporation with flexible control of the final product concentration.

Typical Process Flow:

Fresh Ginger Juice → Feed Preheating → MVR Falling Film Evaporation → Single-Effect Final Concentration → Concentrated Ginger Juice with target concentration

Key Features and Advantages

•  Low-Temperature Concentration

Vacuum evaporation allows ginger juice to be concentrated below 65°C, helping minimize thermal degradation and preserve its natural flavor, aroma, and color.

•  Energy-Efficient Operation

MVR technology recovers and reuses secondary vapor energy, reducing external steam requirements and improving overall energy efficiency.

•  Short Product Residence Time

Falling-film evaporation provides rapid heat transfer and short residence time, making it suitable for heat-sensitive ginger juice products.

•  Automatic PLC Control

The system can be equipped with a PLC-based automatic control system and Human-Machine Interface (HMI) for monitoring and regulating temperature, pressure, liquid level, and flow rate.

•  CIP Cleaning System

A Clean-in-Place (CIP) system can be integrated to facilitate cleaning of product-contact surfaces and maintain hygienic operating conditions.

General Technical Specifications

Actual equipment specifications and operating conditions are determined according to the customer’s processing requirements and product characteristics.

Customized Ginger Juice Concentration Solutions

Different ginger juice products may vary in soluble solids concentration, viscosity, suspended solids content, and temperature sensitivity.

Therefore, selecting a suitable evaporation system requires consideration of processing capacity, initial and final Brix concentrations, allowable operating temperature, and available utilities.

We provide customized ginger juice concentration systems, including single-effect falling-film evaporators, MVR falling-film evaporators, and combined two-stage concentration systems.

Our technical team evaluates each application to recommend an appropriate process configuration that balances product quality, energy efficiency, equipment investment, and operating reliability.

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