Large Rotary Evaporator
(1)1L/2L---Manual lifting with irony base/Manual lifting with SS base/Electric lifting
(2)3L/5L/10L/20L/30L/50L---Manual Lifting/Electric Lifting
***Price List for whole above, inquire us to get
2. Customization:
(1)Design support
(2)Directly supply the Senior R&D organic intermediate, shorten your R&D time and cost
(3)Share the advanced purifying technology with you
(4)Supply the high quality chemicals and analysis reagent
(5)We want to assist you on Chemical Engineering (Auto CAD, Aspen plus etc.)
3. Assurance:
(1)CE and ISO certification Registered
(2)Trademark: ACHIEVE CHEM(since 2008)
(3)Replacement parts within 1-year for free
Description
Technical Parameters
Large rotary evaporator is a kind of evaporation instrument widely used in laboratory, which is mainly composed of motor, distillation bottle, heating pot, condensing tube and so on. It is mainly used for continuous distillation of volatile solvents under reduced pressure, and is applied in the fields of chemistry, chemical industry, biomedicine and so on. It can be used to recover and evaporate organic solvents.
The rotary evaporator consists of a porous spiral longitudinal shaft and a concentric cylindrical shell. No matter homogeneous or heterogeneous materials, they are forced to be added into the evaporator under internal and external conditions. A small number of scrapers in the cylinder can expand the uniform flow film on the inner wall of the cylinder and develop into a very thin liquid-liquid film. In this process, both of them change state at the same time due to the exchange of heat.
We provide Large rotary evaporator, please refer to the following website for detailed specifications and product information.
Product: https://www.achievechem.com/chemical-equipment/rotary-evaporators.html
Product Introduction
It consists of two parts: a cylinder and a jacket.
The cylinder is the main structure supporting the whole equipment, which consists of a longitudinal porous axial tube and a coaxial auxiliary cylinder shell. Among them, the longitudinal porous axial tube is the core component of the rotary evaporator. There are many micropores around it, which can transport the liquid from the bottom to the upper part of the shell.
The outer layer of the cylinder shell surrounds the whole cylinder, which can not only protect the device, but also maintain the temperature stability of the external environment and equipment. An inner eccentric strip is usually added to the jacket to help recover the liquid.
In addition, the rotary evaporator has many important components. For example, concentration meters and valves help to measure the concentration and control the flow of feed liquid. The circulating pump helps to stabilize the temperature inside the equipment and ensure the smooth operation of the equipment as a whole. At the bottom of the axial tube, you can also see the layout of rows of scrapers, which help to prevent steam from leaking from the inside.
Knowledge
It can use many kinds of substances as solvents, and each solvent has its specific characteristics and uses.
solvents
Water
◆ Features: Water is a widely used solvent with good solubility and chemical stability. It is usually used to evaporate water from solution or concentrate solution.
◆ Uses: Water is widely used in pharmaceutical, food processing, chemical and other industries, such as preparing drugs, concentrating fruit juice and extracting natural products.
Ether
◆ Features: Ether is an organic solvent, with strong solubility, high volatility and flammability. It can evaporate quickly and is suitable for extracting compounds from samples.
◆ Uses: Ether is often used in organic synthesis experiments, drug preparation and natural product extraction.
Methanol
◆ Features: Methanol is a cheap organic solvent with high solubility, but it is highly toxic and flammable. It is widely used in chemical production.
◆ Uses: Methanol is often used as a reaction solvent for preparing certain compounds and as a solvent and intermediate in chemical industry.
Ethanol
◆ Characteristics: Ethanol is a common organic solvent, which is relatively safe to human body and has good solubility. It is widely used in laboratory and industrial production.
◆ Uses: Ethanol is often used to extract active ingredients from plants, dissolve drugs and prepare solutions.
Features
The working principle of a large rotary evaporator is mainly based on the synergistic effect of centrifugal force and heating. When the device starts working, the sample solution is placed in a rotating evaporation bottle, which rotates at a certain speed.
During the rotation process, due to the centrifugal force, the solute in the solution will be thrown towards the bottle wall, forming a thin liquid film.
At the same time, the heating device begins to work, heating the evaporation bottle to quickly evaporate the solvent in the solution. As the solvent evaporates, the solute is concentrated on the bottle wall, forming a thick layer of material.
At this point, the evaporated solvent vapor is rapidly extracted through the action of a vacuum pump to reduce the pressure inside the evaporation bottle and accelerate the solvent evaporation process. In this way, after a period of rotational evaporation, the solute in the solution is successfully separated and concentrated.
The effect of centrifugal force in a rotary evaporator is mainly reflected in the following aspects:
Forming liquid film
In a rotary evaporator, when the rotary evaporator bottle begins to rotate at high speed, due to the centrifugal force, the solute in the solution will be thrown towards the bottle wall, forming a thin liquid film on the bottle wall. The formation of this liquid film greatly increases the contact area between the solvent and air, thereby accelerating the evaporation rate of the solvent.
Accelerated evaporation
The formation of a liquid film makes it easier for solvent molecules to escape from the surface of the liquid, come into contact with hot air, and undergo heat exchange. The continuous action of centrifugal force continuously updates the liquid film, ensuring the continuity and efficiency of solvent evaporation.
Concentrated solute
As the solvent evaporates, the solute is gradually concentrated on the bottle wall. The effect of centrifugal force enables solutes to be evenly distributed on the bottle wall, avoiding local accumulation and precipitation of solutes. This helps to obtain a purer and more uniform concentrated product.
Separation of solutes
In a rotary evaporator, solvents with different boiling points can be selectively evaporated and separated by adjusting parameters such as speed and temperature. The effect of centrifugal force makes this process more efficient and accurate. Meanwhile, due to the centrifugal force, solutes are thrown towards the bottle wall and gathered at the bottom, thereby achieving solute separation and concentration.
Two important parameters affecting centrifugal force:
Rotation radius (R)
The radius of rotation refers to the distance from the central axis of the rotating bottle body to the rotating shaft. The increase of rotation radius will lead to the increase of centrifugal force, because centrifugal force is proportional to the square of rotation radius. A larger radius of rotation means a larger centrifugal force, and the components in the solution can be separated more effectively.
However, increasing the rotating radius will also increase the volume and power consumption of the equipment, so it is necessary to comprehensively consider the process requirements, equipment size and energy consumption when selecting the rotating radius.
Rotational speed (N)
Rotation speed refers to the number of revolutions per minute of the rotating bottle body, usually in rpm (revolutions per minute). The increase of rotating speed will lead to the increase of centrifugal force, because centrifugal force is directly proportional to the square of rotating speed. Higher rotating speed can produce greater centrifugal force, thus promoting the separation of components in the solution.
However, too high rotating speed may cause problems such as temperature rise, volatile loss and equipment wear, so it is necessary to comprehensively consider process requirements and equipment safety when selecting rotating speed.
Benefits & Advantages
The use of large rotary evaporators offers numerous benefits and advantages. They are highly efficient, capable of handling large volumes of samples and solvents in a relatively short period of time. This makes them ideal for high-throughput experiments and large-scale production processes.
Moreover, they are designed for ease of use and safety. Their advanced control systems allow users to set and monitor parameters such as temperature, rotation speed, and vacuum level with precision and accuracy. This ensures that the evaporation process occurs within the desired range, minimizing the risk of sample degradation or contamination.
In addition, the robust design and high-quality materials used in the construction ensure their durability and reliability. They are built to withstand the rigors of daily use and are designed to meet the highest standards of safety and performance.
Technological Advancements & Future Trends
Large rotary evaporators, critical tools in chemical, pharmaceutical, and food industries, have undergone significant advancements in recent years, driven by demands for efficiency, safety, and sustainability. Key innovations include enhanced sealing systems, automated controls, and energy-efficient designs. Modern models now utilize self-lubricating materials and PTFE components to achieve ultra-high vacuum tightness-as low as 0.01 mbar-reducing evaporation times by up to 30% compared to traditional systems. For instance, the ST20 model from ChemtronSci employs a hydraulic-lifted heating bath with automatic fail-safes to prevent overheating during power disruptions, ensuring operator and sample safety.
Automation has also transformed usability. Digital controllers with LCD displays now monitor and adjust parameters like temperature, rotation speed, and vacuum levels in real time. Some advanced systems, like Laboao's 20L model, integrate microcomputer-powered switches and anti-vibration vacuum meters, enabling seamless continuous feeding and discharge operations. These features streamline workflows in R&D labs and industrial-scale production.
Energy efficiency is another focal point. Innovations in heating baths-such as dual water/oil compatibility and high-temperature resistance up to 180°C-reduce energy consumption by optimizing thermal management. Additionally, vertical coiled condensers with expanded cooling surfaces, like SciQuip's 1,500 cm² design, enhance solvent recovery rates while minimizing refrigerant use.
Looking ahead, the future will prioritize smart integration and green chemistry. Expect developments in IoT-enabled remote monitoring, predictive maintenance, and AI-driven process optimization. Manufacturers are also exploring biodegradable materials for non-critical components and modular designs to adapt to evolving lab needs. As industries like biopharma and renewable energy demand scalable, eco-friendly solutions, they will continue evolving as indispensable tools for sustainable innovation.
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