Premium
Pilot Loop Tests of a Threshold Hydrate Inhibitor
Author(s) -
PALERMO T.,
GOODWIN S. P.
Publication year - 2000
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2000.tb06788.x
Subject(s) - subcooling , hydrate , clathrate hydrate , chemistry , work (physics) , solvent , thermodynamics , materials science , physics , organic chemistry , boiling
A bstract : The main objective of this work was to investigate the efficiency of a threshold hydrate inhibitor (THI 178) in terms of hydrate formation temperature under multiphase flow conditions. THI has been developed by BP and is commercialized by TROS (TROS trade name: Hytreat). THI is a mixture of polymers in a solvent carrier that inhibits the formation of hydrate nuclei in solution and at surfaces. A THI blend 178 was successfully tested on the Ravenspurn to Cleeton 16‐inch gas line (Ravenspurn trial). Pilot loop tests were carried out to test the performance of THI to its limits and establish the range of its applications. The construction and operating characteristics are designed to make the loop represent a production system as closely as possible in a controlled, recirculating system. Its main outlines are a diameter of 2″, a length of 140 meters and a maximum pressure of 10 Mpa (100 bara). It has been shown that THI has a marked effect on the formation conditions at concentrations of 500 ppm and above. A relationship between the subcooling temperature corresponding to hydrate appearance and THI concentration has been determined. The effect of the pressure on hydrate formation conditions was highlighted. This work has been carried out in the framework of JIP Eucharis.