The Double effect vacuum concentrator is a food-grade unit engineered by Zhonglian Machinery for beverage, juice and water production lines. As a reliable Double effect vacuum concentrator, it delivers stable performance, hygienic design and easy integration into complete turnkey beverage production solutions for markets across Central Asia, Africa, Southeast Asia and South America.
Equipment Features
- High-efficiency energy-saving double-effect structure Two effects evaporate simultaneously, and the secondary steam from the first effect is reused as heating medium for the second effect. Compared with single-effect concentrators, it reduces total energy consumption by 40%, significantly lowering long-term production operation cost.
- Low-temperature negative-pressure evaporation Adopting negative pressure external heating natural circulation technology, it operates at reduced boiling point. The first effect runs at 80–90℃ and the second effect at 55–70℃, effectively protecting heat-sensitive active ingredients and ensuring high product quality.
- Multi-functional flexible operation It recovers alcohol with concentration up to about 80%. Both single-effect and double-effect modes are available for repeated paste collection. It supports both intermittent batch feeding and continuous feeding, adapting to diverse production process requirements.
- Fast evaporation & high concentration ratio Natural circulation delivers fast evaporation speed with a concentration ratio of 1.1–1.3, meeting concentration demands of different materials and process requirements.
- Hygienic & reliable operation Full stainless steel structure with fully sealed operation avoids external contamination, complying with food and pharmaceutical hygiene standards. The equipment runs stably with straightforward operation and convenient daily maintenance.
Working Principle
The equipment combines external heating natural circulation with vacuum negative pressure evaporation technology. Fresh steam heats the material in the first-effect heater, and the secondary steam generated from first-effect evaporation is delivered to the second-effect heater as its heating source, realizing secondary utilization of steam energy.
Driven by the density difference caused by heating, materials circulate naturally between the external heater and the evaporation chamber. Under vacuum negative pressure, the boiling point of materials is reduced to realize low-temperature rapid evaporation. The whole process runs in a fully closed system with stable concentration effect and remarkably reduced energy consumption.
Technical Parameters
Some parameters in the original datasheet have typesetting deviation. The above data is for reference only, and specific specifications can be fully customized according to actual production requirements.
Application Fields
- Pharmaceutical industry: Low-temperature concentration of traditional Chinese medicine decoction, herbal extracts, liquid medicine and pharmaceutical intermediates, as well as alcohol solvent recovery
- Food & beverage industry: Concentration of fruit juice, syrup, plant extracts, dairy products and other heat-sensitive food raw materials
- Chemical industry: Concentration of chemical solutions, fine chemical products and solvent recovery, especially suitable for medium and large-scale production lines
- Biological engineering: Low-temperature vacuum concentration of heat-sensitive biological materials, enzyme preparations and biological extracts
