QN Spherical Vacuum Concentrator & Alcohol Recovery Unit

Multi-Functional Distillation | 95% Alcohol Purity | GMP-Compliant Stainless Steel


This Alcohol Recovery Unit equipment is a high-efficiency multi-functional concentration and distillation system, comprising four core components: the spherical vacuum concentrator body, condenser, gas-liquid separator, and receiving tank. Specifically engineered for the pharmaceutical, food, light industry, and chemical sectors, this versatile vacuum evaporator excels in both vacuum-reduced pressure concentration and high-efficiency alcohol recovery, purifying dilute alcohol into high-concentration finished products. The entire unit is constructed from premium stainless steel, fully adhering to GMP standards.

QN Spherical Vacuum Concentrator & Alcohol Recovery Unit

Core Value Propositions


  • High-Purity Alcohol Recovery: Engineered to distill 30-50% dilute alcohol into a 90-95% high-concentration product in a single pass, significantly reducing solvent costs.
  • Low-Temperature Protection: Utilizing vacuum negative pressure to lower boiling points, this Alcohol Recovery Unit system protects the bioactive integrity of heat-sensitive herbal extracts and juices.
  • Minimal Solvent Loss: Advanced condensation technology ensures that the alcohol content in residual liquid is kept below ≤2%, maximizing your yield.
  • Industrial-Grade Durability: Built with mirror-polished stainless steel for superior corrosion resistance and easy cleaning, fully meeting global GMP and hygiene standards.

Primary Application Scenarios


Solvent Recycling & Purification: Designed for the recovery of dilute alcohol and organic solvents used in pharmaceutical and chemical production.

Herbal & Food Concentration: Ideal for the rapid dehydration of extracts, fruit juices, and dairy products that require low-temperature processing to prevent spoilage.

Precision Rectification: Spherical Vacuum Concentrator is used for the separation of light components and the purification of chemical raw materials in industrial distillation processes.

Pilot Scale R&D: Its compact footprint and ease of operation make it a preferred choice for research institutions and small-batch experimental trials.

Solutions to Critical Technical Challenges


  • Preventing Heat Damage: Negative pressure environments eliminate the risk of discoloration or nutrient degradation common in atmospheric boiling.
  • Reducing Operational Costs: High-efficiency recovery allows factories to recycle expensive solvents rather than disposing of low-concentration waste.
  • Meeting Compliance Standards: The fully enclosed Spherical Vacuum Concentrator system prevents volatile emissions and ensures discharge residuals meet environmental and industrial benchmarks.
  • Customizable Reflux: Integrated valves allow operators to adjust the reflux ratio, providing precise control over the final alcohol concentration.
ModelQN-300QN-500QN-700QN-1000QN-1500QN-2000
Evaporation Capacity (kg/h)70120145195250350
Total Volume (L)300500700100015002000
Inner Diameter (mm)8009901115125014001600
Steam Pressure (MPa)0.150.150.150.150.150.15
Jacket Pressure (MPa)0.090.090.090.090.090.09
Vacuum Degree (MPa)-0.05 to -0.08-0.05 to -0.08-0.05 to -0.08-0.05 to -0.08-0.05 to -0.08-0.05 to -0.08
Heating Area (m²)1.622.33.245.2
Condensing Area (m²)3.955.88.21116
Water Consumption (T/H)55881012
Steam Inlet (mm)323232404040
Water Inlet (mm)323240405050
Receiver Tank Volume (L)150200220240280300
Electric Heating (kW) / Steam24272736SteamSteam
Equipment Weight (kg)400500700100016001950
Overall Dimensions (L*W*H mm)1900*1100*23002030*1200*25002100*1300*26002335*1520*27652500*1700*29002750*1800*3100
CustomizationCustomized designs available (Dimensions for reference only)

Frequently Asked Questions


Answer: The Spherical Vacuum Concentrator utilizes a rounded vessel design to optimize heat distribution and structural integrity under high vacuum. Unlike flat-bottomed tanks, the spherical shape allows the liquid to form a larger surface area relative to its volume, which significantly accelerates the evaporation rate. Furthermore, the curved walls facilitate a natural convective flow during heating, ensuring that the material is processed uniformly without “cold spots.” This excellent geometry is perfect for maintaining a stable concentration environment while maximizing your hourly output of medicinal or food-grade extracts.

Answer: Our integrated Alcohol Recovery Unit is engineered to capture volatile solvent vapors with extreme precision. As the alcohol evaporates from the mixture under vacuum, it is drawn through a high-efficiency shell-and-tube condenser. This cooling system rapidly liquifies the vapor, achieving a recovery rate of over 95%. This high level of efficiency is extraordinary for reducing the cost of raw materials and preventing the release of flammable vapors into the workspace. It ensures a successful closed-loop operation that is both environmentally compliant and highly cost-effective for industrial manufacturers.

Answer: By utilizing a high-performance vacuum pump, the Spherical Vacuum Concentrator lowers the internal pressure, which effectively reduces the boiling point of the solvent. This allows for concentration to occur at temperatures as low as 45°C to 55°C, which is ideal for protecting delicate botanical enzymes, pigments, and active pharmaceutical ingredients. This elite thermal management prevents the oxidation and thermal degradation that occur at standard boiling temperatures, ensuring your final concentrate retains its absolute potency and natural aromatic profile.

Answer: We manufacture all contact parts from high-grade 304SS or 316L stainless steel to provide a non-reactive environment for solvents and acidic plant extracts. Alcohol-based extraction involves consistent exposure to volatile organic compounds, which can cause corrosion in lower-grade metals. Our sturdy stainless steel construction, combined with a mirror-polished interior (Ra < 0.4μm), ensures that the equipment remains reliable and easy to clean. This expert sanitary design prevents metal leaching and ensures your facility meets the most rigorous GMP and food safety standards.

Answer: Absolutely. While the spherical design is primarily focused on efficient evaporation and solvent recovery, it can be equipped with an internal agitator to handle thickening materials. The vacuum pressure helps pull the viscous liquid through the discharge valve, making the final collection process effortless. Our pioneering engineering ensures that even as the density of the product increases during the concentration phase, the heat transfer remains consistent, allowing you to master the production of high-quality, high-viscosity herbal pastes and chemical concentrates.

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