Single-Layer Glass Reactor

Rotary Evaporator

A rotary evaporator is a laboratory evaporation system designed to remove solvents efficiently under reduced pressure. By combining vacuum, controlled heating, flask rotation and condenser cooling, it allows solvents to evaporate at lower temperatures than under atmospheric pressure.

Detailed Description

Working Principle

The YRE-2000B rotary evaporator operates based on vacuum evaporation and thin-film evaporation technology. During operation, the evaporation flask rotates at a controlled speed while being heated in a temperature-controlled bath.

As the flask rotates, the liquid sample spreads evenly along the inner wall of the flask, forming a large-area thin film. This increases the effective evaporation area and promotes efficient heat transfer and solvent evaporation.

At the same time, a vacuum system reduces the pressure inside the evaporation system, lowering the boiling point of the solvent. This allows the solvent to evaporate at a lower temperature, which is particularly useful for temperature-sensitive materials.

The generated solvent vapor then enters the vertical glass condenser, where it is cooled and condensed back into liquid. The recovered solvent flows into the receiving flask for collection.

Working Process

Vacuum → Controlled Heating → Flask Rotation → Thin-Film Formation → Solvent Evaporation → Vapor Condensation → Solvent Recovery

This process enables the YRE-2000B to perform efficient solvent evaporation, concentration and solvent recovery in laboratory applications.

Product Features

1. Intelligent Temperature Control

The YRE-2000B uses a PID intelligent temperature control system and a temperature sensor to monitor and regulate the heating bath temperature. The temperature is displayed digitally for convenient operation and monitoring.

The published specifications list a heating bath temperature range of approximately room temperature to 90°C, depending on the configuration/source specification.

2. Adjustable Rotation Speed

The evaporation flask is driven by a 40 W motor and supports adjustable rotation speed. The YRE-2000B is listed with a rotation range of 20–200 rpm, with digital speed display.

The adjustable rotation speed allows users to optimize film formation and evaporation conditions for different samples.

3. Efficient Thin-Film Evaporation

During rotation, the liquid forms a thin film over a large area of the evaporation flask wall.

This helps improve:

Heat transfer
Evaporation efficiency
Solvent removal
Process stability

This is one of the key operating principles of a rotary evaporator.

4. Efficient Glass Condenser

The YRE-2000B uses a vertical glass condenser with a dual-return design, together with a receiving flask for solvent collection. This design supports efficient condensation and convenient solvent recovery.

5. Automatic Electric Lifting

The main unit uses an electric lifting mechanism, allowing the evaporation flask position to be adjusted quickly during operation. Published specifications list a lifting range of approximately 0–150 mm.

This makes it easier to:

Position the flask in the heating bath
Remove the flask
Adjust the working position
Improve operational convenience

6. PTFE-Based Sealing

The vacuum sealing system uses fluoropolymer-based sealing components. This helps maintain the vacuum environment required for rotary evaporation and provides good chemical resistance for laboratory solvent applications.

7. Compact Desktop Design

The YRE-2000B uses a compact desktop structure with aluminum-alloy and engineering-plastic components. The design is intended to provide a relatively small footprint while maintaining the necessary mechanical stability for laboratory operation.

8. Digital Display and Convenient Operation

The YRE-2000B provides digital display of operating parameters such as rotation speed and bath temperature, allowing users to monitor the main operating conditions during evaporation.

Product Specifications

Item	Specification
Model	YRE-2000B
Power Supply	220V 50Hz
Motor Power	40W
Heating Power	1200W
Max Vacuum Level	0.098Mpa
Evaporate Rate	20ml/min
Rotating fask volume	2L
Receiving flask volume	1L 35# ball mill mouth
Heating bath inner size	Φ285×140H(mm)About 5.6Liter
Heating bath outer size	285L×285W×210H(mm)
Condenser size	Φ85×375H(mm)About 0.17㎡
Rotating speed range	0-200pm/min
Temperature control range	RT-99℃
Temperature control accuracy	±1℃
Resistant temp. range of glassware	-80-250℃
Lift distance	0-140mm Electric lifting
Feeding valve	19# Standerd port
Temperature Control Accuracy	±1℃
Condenser circulating port	Pagoda joint outer diameter 12mm
Machine dimension	625×440W×600H（mm）
Machine weigth	23KG

Frequently Asked Questions (FAQ)

1. What is a single layer glass reactor used for?

A single layer glass reactor is widely used for chemical reactions, mixing, heating, evaporation, concentration, crystallization, and solvent recovery processes. It is commonly applied in laboratories, pharmaceutical research, chemical industries, universities, and R&D facilities.

2. What materials can be processed in a single layer glass reactor?

The single layer glass reactor can handle various materials, including organic solvents, chemical solutions, pharmaceutical intermediates, plant extracts, and other liquid or semi-liquid materials. The reactor body is made of high borosilicate glass 3.3, which provides excellent chemical resistance and temperature stability.

3. What is the maximum working temperature of the glass reactor?

The standard working temperature range of our single layer glass reactor is -80℃ to +250℃. The actual operating temperature depends on the reactor model, heating system, and process requirements.

4. Can the single layer glass reactor work under vacuum conditions?

Yes. The single layer glass reactor can operate under vacuum conditions when connected with a vacuum pump or vacuum system. Vacuum operation can reduce the boiling point of solvents and improve evaporation efficiency.

5. Does the reactor include a heating system?

Yes. The reactor is equipped with a constant temperature heating bath system, which provides stable and accurate heating. The heating temperature can be precisely controlled according to different process requirements.