Reliable Performance in Methylene Chloride Synthesis: the Saurus939 Vacuum Pump

The Challenges of Methylene Chloride in Industrial Processes

 

Methylene chloride (dichloromethane) is one of the most widely used solvents in the chemical and pharmaceutical industries thanks to its excellent solvency properties and its ability to mix with a wide range of organic compounds.
Its versatility makes it a key component in numerous synthesis, extraction and purification processes. However, certain operating conditions, particularly high process temperatures, can promote solvent degradation and the subsequent formation of carbonaceous residues.
These phenomena represent a significant challenge for vacuum systems, as they can compromise operational efficiency and increase maintenance requirements throughout the plant.
Methylene chloride is commonly used in several industrial applications, including:

• Production of chemical intermediates
• Synthesis of pharmaceutical active ingredients
• Extraction and purification processes
• Specialty chemical manufacturing
• Applications requiring high-performance solvents

In these environments, the selection of the appropriate vacuum system plays a crucial role in ensuring process reliability and production continuity.

Why Methylene Chloride Can Put the Plant at Risk

During synthesis processes, methylene chloride may undergo thermal degradation, leading to the formation of by-products and carbonaceous deposits.
These operating conditions can create several challenges:
 

• Formation of carbonaceous deposits: residues tend to accumulate inside the vacuum system and on critical surfaces, affecting proper operation.
• Reduced operational performance: the buildup of impurities can negatively impact pump efficiency and achievable vacuum levels.
• Increased maintenance requirements: periodic removal of deposits results in higher maintenance costs and more frequent service interventions.
• Risk of unplanned downtime: in severe cases, residue accumulation can interfere with pump operation and lead to unexpected production interruptions.

Solution: Saurus939 VVD Vacuum Pump

To address these challenges, a Saurus939 VVD vacuum pump equipped with AISI valves and integrated with an atmospheric post-condensation unit was implemented.
The solution is installed on a compact skid, simplifying installation, handling and integration within the production plant.
One of the key advantages of the Saurus technology is its low rotational speed of approximately 250 rpm, around one-twelfth of the speed of a conventional dry vacuum pump. This feature reduces mechanical stress and helps keep moving components cleaner during operation.
In addition, the continuous flow of fresh oil constantly removes residues from the vacuum area, minimizing buildup and maintaining stable operating conditions over time.
Should significant carbonaceous deposits occur, the system allows short and frequent washing cycles to be carried out without interrupting the production process. This enables the pump to quickly return to optimal operating conditions while maximizing uptime and long-term reliability.

The Competitive Advantages of the Saurus939 Vacuum Pump

 

• Reduced accumulation of carbonaceous residues
  The combination of low rotational speed and continuous fresh oil circulation helps limit deposit formation inside the pump.
• Reliable long-term performance
  The system maintains high efficiency levels even in applications characterized by process by-products and impurities.
• Improved production continuity
  In-line washing cycles help minimize the risk of unplanned shutdowns and support consistent plant productivity.
• Protection of internal pump components
  Continuous oil renewal helps keep internal surfaces clean and preserves performance over the long term.

Additional Strengths

 

• Simplified maintenance
  Routine and extraordinary maintenance operations can be carried out quickly and efficiently.
• Specialized technical support
  Experienced technicians are available to provide on-site assistance and operational support.
• Immediate spare parts availability
  Fast access to replacement components helps reduce downtime and improve plant management.
• Optimized operating costs
  The high reliability of the system contributes to lower operating and maintenance costs over the medium and long term.

Customer Feedback

An Italian chemical-pharmaceutical company adopted the Saurus939 vacuum pump for a methylene chloride synthesis process characterized by the formation of carbonaceous residues.
Despite the demanding operating conditions, the system delivered reliable performance and continuous operation. Steam cleaning cycles helped minimize maintenance requirements and extend the service life of the vacuum unit.
Would you like to learn how the Saurus939 can improve the reliability of your methylene chloride processes?
Contact our experts for a personalized technical consultation tailored to your application and production requirements.