Purge/Gas sweep models



Purging operations are usually realised on industrial units (tank, reactor, etc.) in order to maintain product quality (e.g., by using a dry sweep gas to minimise water vapour in system), to reduce concentrations of flammable vapours or also to purge all residual vapour from an installation.

Purge/gas sweep operations are realised:

  • By direct injection of a gas (nitrogen, air or other) in the installation,
  • By forced extraction (canalised output) of vapours.

Following picture present reactors with forced extractions (used for purging the headspace in order to maintain vapour concentration below the inferior explosive limit):


In order to evaluate atmospheric emissions during purging operations, Envmodels propose two calculation tools:


Environmental Models
Your online calculation tool
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