Chemical dry pump

Chemical dry running pumps have no oil steam or water In the process volume. This eliminates, at source, the pollution traditionally associated with wet sealed vacuum systems and provides cost and materials handling benefits as the sealing medium does not have to be replenished: no contamination of the process stream, no polluted effluent, no messy oil drums, improved processing with reduced down.

The proven and rugged non contacting designs, both screw and reverse claw mechanisms, include the ability to control pump body and internal gas temperatures allowing a comprehensive range of solvents, flammables and corrosives to be pumped. Systemised variants address the EU’s explosive atmospheres (ATEX) directive for Category (Zone 0) T4 operation.

CDX Chemical Dry Pump

CDX Chemical Dry Pump

Edwards CDX1000 represents the latest generation of dry pump technology. The CDX1000 is a double-ended screw mechanism for the chemical process, pharmaceutical and petrochemical industries. This innovative technology leverages Edwards latest manufacturing and design philosophies. The CDX1000 is suited to larger processes where repeatability and reliability are key.

Technologies and manufacturing techniques have been carefully selected to produce a robust, high performance machine that is simple to operate and maintain.

CDX dry vacuum pump can get peak pumping speed to 900 m3h-1 and ultimate vacuum to 5 x 10-3 mbar.

Features and Benefits
  • Performance: continuous from atmosphere to ultimate, excellent temperature control, large liquid slug capability
  • Environment: no effluent generated, dry running mechanizm, efficient solvent recovery, low power
  • Maintenance: on-site seal and bearing change, flushable with water, solvent or steam, low rotational speed, low rotational Speer, cooled and filtered oil, integral accessory modules
  • Simplicity: low parts count, balanced rotor design, no compression plate, industry standard motors
Applications
  • Processes
  • Distillation
  • Drying
  • Evaporation/Crystallisation
  • Solvent/Vapour Recovery

CXS Chemical Dry Pump

Pompa bezolejowa chemiczna CXS

CXS is Edwards most advanced chemical dry pump featuring tapered-screw technology for exceptional energy efficiency and performance. It offers high reliability and effluent-free pumping even in the most difficult of harsh chemical and pharmaceutical processing applications.

The CXS pumps up to one litre of liquid per minute continuously or up to 25 litre-slugs without stopping, and provides an ultimate vacuum down to 10-2 mbar.

CXS is available in two sizes, with capacities of 160 m3h.-1 and 250 m3h-1.

Features and Benefits
  • Environmental: no oil disposal, no oil emissions into atmosphere
  • Performance: very stable pumping speed gives repeatability to processes, continuous pumping at atmosphere, ability to handle particulates, dry eliminates back-streaming, thus protecting reactive alloys from contamination
  • Safety: unobtrusive noise levels, no unsightly oil spills, no hazardous oil vapours
Applications
  • Drying
  • Degassing
  • Deodorisation
  • Distillation
  • Solventrecovery

EDP Chemical Dry Pump

Pompa bezolejowa chemiczna EDP

EDP pumps are based on Edwards oil-free, non-contacting, award-winning, reverse claw mechanism. They provide consistent vacuum at high efficiencies and low costs of ownership. Dry pumps completely eliminate all problems of process contamination and creation of polluted effluent, which are experienced with traditional wet vacuum pump technologies.

This expertise is incorporated in our chemical dry pumps to satisfy the demanding requirements of the chemical, petrochemical and pharmaceutical industries.

EDP Chemical Dry Pump can get peak pumping speed from 83 m3h-1 to 427 m3h-1 and ultimate vacuum from 0,5 mbar to 0,2 mbar.

Features and Benefits
  • Staged compression for optimum temperature profile within the pump and no requirement for cooling gas injection
  • Inherently free draining
  • Able to handle liquid or particulate carry-over
  • Short gas path eliminates particulate build-up and corrosion– Edwards’ patented design
  • Can flush with solvents, water or steam
  • No internal valves to block or corrode and no interstage condensers to create potential for corrosion
  • Simple robust construction with ample power ensures reliable operation even Turing process upsets
  • Non-contacting mechanisms gives long life and high reliability
  • Pump flammable gases safely
  • Pump corrosive gases without corroding
  • Designed for long life and easy maintenance
  • Minimum of 25 years life expectancy
  • Lower cost of ownership
Applications
  • Drying
  • Distillation
  • Reactor service
  • Solvent recovery
  • House/central vacuum