Water Eductors for Process Vacuum
Process Vacuum is an essential requirement in the Chemical Industry & the Pharmaceutical Industry and is required for following purposes
• Carrying out chemical reactions under vacuum
• Evacuating gases
• Evacuation of Reactors and Vessels.
But at the same time the vacuum equipment working in the Chemical & Pharmaceutical Industry also faces the below challenges
• Corrosion due to corrosive vapours coming from the Chemical media
• Liquid droplets & Solid particles carryover
• Less tolerance for shutdown as vacuum is essential for production.
Water Eductors are essentially Liquid jet Vacuum Ejectors that operate on the basis of the jet Venturi principle.
Water Eductors utilize the energy in pumped water for their operation and can be put to use to create vacuum conditions at its suction inlet.
The capacity of the Water Eductor or Liquid jet Vacuum ejector in terms of suction flow and max vacuum depends upon the internal design of the ejector and the operating pumped water pressure.
A Water Eductor or Liquid jet Vacuum ejector can develop ultimate vacuum upto 30 Torr i.e 40mbar.
The water Eductor commonly operates with wide range of motive liquid pressure from 2.5 bar(a) to 7 bar(a).
Water Eductors are suited for the process vacuum demands in the Chemical & Pharmaceutical sector because of their inherent characteristics
• Can be manufactured in a large range of materials (Plastics, Stainless Steels, Exotic Materials)– it helps to select the best possible material compatible with the involved chemicals and reduces the risk of corrosion
• Water Eductors do not contain any moving parts and have large internal passage areas, hence are not vulnerable to liquid entry or clogging by solid particles.
• As they have no moving parts, maintenance requirements are very less. Also it reduces largely the risk of abrupt breakdowns, helps in maintaining the regular production schedule
• Service Water at 2.5~7 bar(a) is a commonly available utility and hence no additional infrastructure is typically required.