2BW Liquid Ring Vacuum Package – Chemical Process Systems

The 2BW Liquid Ring Vacuum Package is a complete vacuum system designed for demanding chemical process applications where safe, reliable, and continuous gas handling is required. Developed by Guangdong Kenflo Pump Co., Ltd., the package is based on proven 2BE1 and CBF liquid ring vacuum pump technologies and can be configured to meet different process requirements and operating conditions.

The 2BW series is divided into four series, from 2BW5 to 2BW8, allowing the package to be customized according to the characteristics of different chemical processes. It can be integrated with the required auxiliary equipment and control systems to provide a complete vacuum solution.

The package is particularly suitable for handling flammable, explosive, and toxic gases, making it an important solution for chemical, pharmaceutical, and special-gas processing applications.

Complete Liquid Ring Vacuum System

The 2BW package integrates the major components required for closed-loop liquid ring vacuum operation. Its configuration can be adapted to different process requirements and working conditions.

The standard system can include:

• Liquid ring vacuum pump

• Heat exchanger

• Gas-liquid separator

• Working-fluid circulation system

• Liquid replenishment and discharge system

• Liquid-level control system

• Process control and monitoring equipment

Closed-Circulation Working Fluid System

The package is equipped with a heat exchanger that allows the working fluid to circulate in a closed loop. Water can be used as the working fluid, while other suitable liquids such as ethylene glycol, diesel oil, and DOP may also be used depending on the application and process requirements.

During operation, the vacuum pump discharges a gas-liquid mixture into the gas-liquid separator. The separator separates the gas from the working fluid. The liquid is cooled through the heat exchanger and returned to the vacuum pump for continued circulation.

The separated gas is discharged through the separator outlet to the designated downstream location.

Flexible Liquid-Level Control

The 2BW vacuum package provides several liquid-level control options to accommodate different operating requirements.

Manual Liquid-Level Control

With manual control, the operator monitors the working-fluid level and adjusts the replenishment valve when necessary. A small amount of working-fluid vapor may be carried away with the discharged gas during operation, causing the liquid level to gradually decrease.

Electric Liquid-Level Control

For automated operation, liquid replenishment and discharge solenoid valves can be installed on the gas-liquid separator.

When the liquid level falls below the lower limit, the replenishment solenoid valve automatically opens to add working fluid. Once the required level is reached, the valve closes automatically.

If the working-fluid level rises above the upper limit, the discharge solenoid valve opens automatically to remove excess liquid and closes once the appropriate level has been restored.

Technical Parameters