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Dosing Ejectors for Chemical Dosing

Chemical Dosing is a regular process commonly observed in the Chemical, Pharmaceutical & Water Treatment sector.
Generally the below media is subject to Dosing
• Acids (Hydrochloric acid, Sulphuric Acid, Nitric Acid)
• Alkalis
• Caustic
• Lime
• Powdered Activated Carbon (PAC)

The Dosing equipment is expected to take care of the following
• Ensuring the required quantity of Dosing
• Ability to withstand corrosion due to the corrosive nature of the acids & alkalis

Dosing Ejectors are essentially liquid eductors that operate on the basis of the jet Venturi principle. Dosing Ejectors utilize the energy in pumped liquid (in most cases the diluting liquid) for their operation. Dosing Ejector operate by first sucking the chemicals through their suction inlet, mixing it with the pumped liquid inside the ejector and pumping out the mixture from its outlet.
This mixture contains the required dosage of the chemicals / powders and can be directly supplied to the downstream equipment.

The quantity of the sucked chemicals / powders i.e the dosage depends upon the design of the ejector. For a Dosing Ejector in operation the quantity of the dosage can be regulated by controlling the operating pressures. Thus the same Dosing Ejector can deliver multiple dosage quantity depending upon the concentration requirements

For continuous Dosing requirement, Dosing ejectors are a perfect solution because of their inherent characteristics
• Ability to regulate the dosage at the Dosing Ejector outlet.
• Performs a dual function of dosing the required quantity of chemicals & powders and pumping it tot their destination.
• 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
• Dosing Ejectors do not contain any moving parts and have large internal passage areas, hence are not vulnerable to 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.