Understand the Underlying Principles Behind Innopipe’s Reliable Liquids Removal System

The video below explains why Innopipe provides such an elegantly simple solution for removing liquids from predominantly gas streams.

Take a step back in time with this video to the early days of the Dutch gas boom in the Groningen gas fields and learn about annular flow regimes in branched lines.

Discussed are:

  1. formation of liquids in gas systems as they vary with pressure and temperature variations
  2. drying by expansion is shown to remove the majority of condensation
  3. at lower velocities, stratified, wave and atomized flows are observed, but at velocities over 5 m/s and annular flow regimes are observed
  4. liquid accumulation at low areas is discussed as liquids can accumulate at these crossings and can form liquid “slugs”.
    1. at velocities of ~4 m/s (often seen during times of increased periods of gas use such as cold snaps of seasonally) these slugs are forced through the low location.
  5. gas and liquid flow behaviours at tee-branch points are discussed separately, observing that:
    1. Gas divides between the branches
    2. in the case of annular down to laminar flows liquids are shown to follow the tee preferentially until gas flow is reduced drastically (even when branch dia. is smaller)
  6. the conclusion is that in a branched network, liquid flow will typically terminate at a single branch
  7. traditional separation with “siphon traps” is discussed, and shows such separation is effective only when liquids flow along the bottom of the pipeline
    1. at higher flowrates, and as soon as annular and/or turbulent flow occurs, the siphon’s effectiveness deteriorates as it misses the rest of the diameter’s liquid flows
  8. even in the case of a rising branchline, liquids are shown to prefer to flow uphill through the branch rather than the main line.
  9. in both laboratory and actual situations empirical findings confirm the 5 m/s threshold
    1. Gasunie’s model of what is now available as Innopipe’s non-piggable drip design is shown.
  10. a system much like Innopipe’s gravity drain system shows its effectiveness in calming down liquids behaviour by removing it quickly from the main line, reducing blow-by.
  11. various cyclonic devices are shown and discussed.

Discover Innopipe’s evolution in design which does away the need for flow sensitive cyclonic systems; eliminates the majority of filtration systems; is piggable yet removes 99% of liquids using inexpensive to build, design code-adaptable Piggable Pipeline Drips. Ask your Innopipe technical staff how we can save you money and help your project get online faster. [email protected] Our ability to design in-house and build locally near your installation will save you money and time. We guarantee it!