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Plot No. 304-305, Mahagujarat Industrial Estate, Opposite Nova Petro-Chemical
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Soxal Hydrogen Plant

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Specifications:


  • These plants incorporate design features which enables to produce high quality nitrogen gas simultaneously with oxygen gas production. This results in higher economical viability.
  • Plants are equipped with a highly efficient Expansion Engine, which helps rapid and adequate coolin.On account of this operation is exceedingly stable with a consistency in gas purity.
  • High standard of purity of gases.
  • Low Power Consumption.
  • A special bupass valve is provided for quick production and better cooling.
  • Full proof temperature indicating system-electronic scanner.
  • International class pressure differential gauges are fullproof liquid level indicators with stainless steel control panel.
  • High quality insulation by perlite power to prevent cold losses.
  • Liquid Nitrogen withdrawal facility.
  • Separate Nitrogen pump.
  • Heavy duty compressor (4 stage) suitable to operate with the power supplied by a diesel generating set or normal power supply of 415/440 V-50 cycle.
  • No bulky gas holder required.
  • An industrial refrigerator (chilling plant) with air-cooling facility both before and offer the drier battery is included in our scope of supply.
  • Low maintenance cost.
  • Safe and easy to operate.
  • Plants layout,foundation drawings for easy an economical installation.
  • On line Oxygen purity analyzer.
  • Liquid pumps are with non-lubricated cross head and therefore are hazard free for oxygen pumping.
  • Facility for Oxygen pumping.
  • Minimum percentage of Oxygen is lost through wast Nitrogen to achieve optimum production.


Process Description:


  • Atmosphereic air mainly consists of oxygen and nitrogen gas along with small quantities of vapour, carbon dioxide, argon helium,etc.Oxygen and nitrogen from the air are separated due to difference in boiling points by distillation through fractional column.
  • Atmosphereic air is sucked in by a multi stage compressor through a filter and is compressed to the design pressure. the compressed air is then passed through inter-coolers,industrial refrigerator.moisture separators,and then to the molecular sieve battery for removal of carbon dioxide,hydrocarbons and moisture from the process air. This pure air then passes through the 1st heat exchanger,where it is cooled by the out going nitrogen and oxygen. Part of this cooled air is passed through expansion engine and 2nd heat exchanger help in further cooling down the air, which is finally released to the bottom of the column through an expansion valve The air bones liquid at this stage.
  • The column consists of two parts. The lower column and upper column.In between the lower and upper column there is a condenser,which acts as a re-boiler for the upper column..The liquid air at the bottom of lower column separates through the trays to give crude oxygen at the bottom and approximately 90% pure Nitrogen at the top.Crude oxygen termed as rich liquid is then expanded through another expansion valve from the top of the lower column to the top of the upper column. Due to difference in the boiling points, the pure nitrogen boils over and accumulates at the top of the upper column and oxygen which accumulates at the bottom of the upper column.
  • Both nitrogen and oxygen are removed through separate paths in heat exchangers, for cooling the incoming air. Oxygen is compressed to a prescribed settled pressure by a liquid pump and is directly filled into cylinders. Nitrogen is however available at a pressure of approximately 0.5kg/cm2 and the same can be compressed into cylinders with help of an independent high pressure compressor.

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