Case Study

Volm Two-Stage Liquid Ring Vacuum Pumps Empower Efficient and Stable PVC Production

In PVC suspension polymerization processes, vacuum pumps are critical across six core stages: reactor deoxygenation, post-polymerization degassing, wet material drying, and monomer recovery. Particularly in vacuum drying, maintaining 60~80°C is essential to protect PVC’s heat-sensitive particles from thermal degradation. The client requires 5~15 kPa(A) vacuum (far below single-stage liquid ring pump’s efficient range of 20 kPa(A) to atmospheric pressure). Leveraging deep industry expertise, Volm Pump delivered a customized two-stage liquid ring vacuum pump solution, ensuring stable performance across all PVC production stages.

Volm Vacuum Pumps Solve Blackwater Treatment Challenges at Coal Deep-Processing Base

A leading Chinese coal deep-processing facility faced multi-faceted challenges in gasification blackwater treatment, including corrosive media, temperature sensitivity, high-altitude operation (1,100m), and complex vibration conditions. Leveraging 20+ years of industrial vacuum expertise, Volm delivered a customized solution ensuring reliable long-term performance under extreme conditions.

Volm Liquid Ring Compressors Enable Efficient Desulfurization & Green Emission Reduction in Sichuan High-Sulfur Gas Field

A high-sulfur gas field in Sichuan faced plummeting desulfurization efficiency (40%) in its gas stripping system due to water quality changes, resulting in effluent sulfur levels of 1,500 mg/L. This triggered excessive chemical consumption, sludge buildup, and environmental violations. Volm Pump’s customized vacuum stripping solution delivered 90% desulfurization efficiency and 150 mg/L effluent sulfur, cutting chemical costs by 74% while eliminating H₂S leakage risks.

Leading Change: Volm Achieves Efficient Transformation of the Penicillin Crystallization Process Using Screw Vacuum Pump Technology

A pharmaceutical company's penicillin plant—sodium salt section—had long used a liquid-ring vacuum pump + ejector system for the crystallization step, causing high energy and water consumption. After retrofitting to Volm screw vacuum pump systems in 2015, water use fell by 96%, energy consumption dropped 20%, and crystallization time was reduced by 20%, significantly improving production efficiency and product quality and achieving a comprehensive upgrade to efficient, energy-saving, and clean production. Thanks to this successful application, Volm has become an industry leader in introducing screw vacuum pump technology to solvent crystallization processes for APIs, driving technological advancement of the process.