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Jet Stream
Pig:
Jet Stream
Pig:
The Jet Stream Pig
system is used to remove Wax encrusted on the
inside wall of a
pipeline.
It accomplishes
wax removal by using a train of Hydrochloric
acid in front of the pig
and Anhydrous Ammonia behind the pig,and a
further slug of Xylene at
the rear of the train to pacify any corrosive
effects and prevent
crystallization. Except for the Jet Stream pig
separating the
Hydrochloric acid and Anhydrous Ammonia the rest
of the train is
contained by batching pigs.
When the pig's
travel is impeded by a wax build-up, the
pressure across the pig
increases, a valve inside the pig will open
allowing the anhydrous
ammonia to be jetted, through holes in the nose
cone, into the acid at
the wall of the pipe.
The resultant
thermal reaction of the mixing of the two
chemicals, melts the wax, and
the flow keeps any particles of wax in
suspension. The residual of the
chemicals at the end of the run will be Nitrogen
and Brine which can
easily be disposed.
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