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VPSA Oxygen Gas Plant in UAE

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Product Description

VPSA ( Vacuum pressure Swing Adsorption ) Oxygen gas Generators are based on well proven technology using Zeolite Molecular Sieves (ZMS) & Vacuum system for regeneration . When ZMS is used in the VPSA process, nitrogen Molecules, having a higher diameter than oxygen Molecule, passes through the pores and are adsorbed. Therefore, the Oxygen is recovered, while Nitrogen is adsorbed. Adsorption of Nitrogen Molecules happens at Low pressure, which make it efficient & suitable for higher flow rates. In VPSA based Oxygen gas plants Regeneration process is dine with vacuum pumps, which ensures complete regeneration of ZMS. Adsorptive air separation is a cyclic process, in which adsorbent material is alternately, Fed with pressurised air to produce the required product and Regenerated by vacuum to remove the waste gases from the adsorbent.

Adsorptive air separation is a cyclic process, in which adsorbent material is alternately

 
  • It consist three stage
    • Purification
    • Absorption
    • Desorption
 

Purification:-The ambient (inlet) air is filtered before being compressed moderately by a blower system.

Adsorption:-The pre-treated air passes into a vessel containing zeolites to remove any moisture and CO2 and adsorbs the nitrogen while oxygen passes through the vessel outlet. Before the adsorption capability of the zeolite is exhausted the adsorption process is interrupted.

Desorption:-The saturated zeolite is regenerated (i.e. the adsorbed gases released) by means of pressure reduction below adsorption pressure. This is achieved by a dry running vacuum pump. The resulting off gas is vented to atmosphere. To maintain a continuous flow of oxygen supply a surge tank is installed and so the cycle continues.

Salient Features

  • Many years of experience in plant design and manufacturing guarantee high reliability of all VPSA systems.
  • Full Automation All systems are designed for continuous operation and automatic Oxygen demand adjustment.
  • Independent and low-cost on-site production:
    • Production is not affected by road transportation or weather conditions
    • Low power consumption
    • Less injection of water
    • Minimized maintenance and operating costs
  • Fast Start-up time is only 5 minutes to get desired Oxygen purity. So these units can be switched ON & OFF as per Oxygen demand changes.
  • High Reliability Very reliable for continuous and steady operation with constant Oxygen purity.
  • Expected Molecular sieves life is around 15-years i.e. whole life time of

Industrial Application

Oxygen finds broad application in various technological processes and in almost all industry branches.

  • Metal gas welding, cutting and brazing – Oxygen allows generating high-temperature flame in welding torches thus ensuring high quality and speed of work performance.
  • Metal industry – Oxygen is heavily used in the metal industry where it helps to increase burning temperature by the production of ferrous and non-ferrous metals and significantly improve the overall process efficiency.
  • Chemical and petrochemical industries – In the chemical and petrochemical industries, oxygen is widely used for oxidation of raw chemicals for recovery of nitric acid, ethylene oxide, propylene oxide, vinyl chloride and other important chemical compounds.
  • Fish farming – The use of oxygen in the fish farming helps increase the survival and fertility ratios and reduce the incubation period. Along with fish culture, oxygen is applied for shrimps, crabs and mussels rearing.
  • Glass industry – In glass furnaces oxygen is effectively used for burning temperature increase and burning processes improvement.

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Technical Specifications

Plant VPSA Oxygen Generator
Product Flow (NM3/hr) 50 to 5000
Product Purity(%O2) 90-95
Product Pressure – Base Plant (brag) -0.5 to 0.5
Pressure with O2 Compressor (brag) 2-150

 

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