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The APSA Process In Nitrogen Generators

Some of the new-generation nitrogen generators use the APSA process to
generate nitrogen. This APSA process relies on the fractionated
distillation of air at very low (cryogenic) temperatures, and in only one
column. In other words, APSA nitrogen generators are nitrogen generators
that use cryogenic distillation of air to generate nitrogen.

After the air is being compressed, it is purified in the nitrogen
generator, so that the cryogenic operation runs smoothly. The air is being
compressed at around 9 bars with a centrifugal or a screw compressor and
afterwards cooled down with the help of a cooling unit.

The air that runs through the nitrogen generator must then be purified,
so it passes through several filters and cooled down some more.

Afterwards the criogenic process must intervene, so the air enters a
special area of the nitrogen generator, the cooling area, and then the
oxygen in the air is separated from the nitrogen. At the bottom of the
area there will be a liquid that is oxygen-rich and at the top the
desired nitrogen.
The low temperature inside the nitrogen generator is mantained using a
small quantity of liquid nitrogen, which is then added at the produced
nitrogen.

This process is designed so that it's all automatically controlled, it
requires no manual procedures. If problems occur, the nitrogen
generator is created so that it will try to solve them on its own.
For example, if the nitrogen consumption increases, a pressure
regulator will maintain the normal pressure. Or, if the concentration of oxygen
is too high, the APSA process is automatically closed and the excess of
oxygen is ventilated outside. Furthermore, the nitrogen generator waits
for the oxygen levels to decrease, and if they don't, the whole system
is shut down. When this occurs, the nitrogen generator takes safety
precautions.

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This article is written by Grosan Fabiola. Link advertisment by Site-Trade.com and Business Content Dyrectory. If you would like to find more information about Chemical Generators and especially about Nitrogen Generators please follow these links.

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