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Title: Influence of corrosion products on the efficiency of inhibitors in sour gas service

Abstract

The influence of the surface status (ground, rusted, mill scaled) on the corrosion of pipeline steels and on the performance of inhibitors was studied under conditions relevant to high pressure transport gas lines for dehydrated sour gas. In systems containing triethylene glycol (TEG), small amounts of water, NaCl and solid elemental sulfur under 16 bar H/sub 2/S at 25/sup 0/C, rusted surfaces experience increased corrosion rates, include more severe hydrogen attack and need significantly higher inhibitor concentrations. Rusted steel even in the absence of other components might undergo corrosion and hydrogen damage due to the formation of elemental sulfur and water at the interface by reaction of rust with H/sub 2/S. Mill scale gives considerable protection under moderate corrosion conditions (low water and chloride concentration in TEG) and can serve as a barrier layer against contact corrosion by elemental sulfur. The experimental results are applied for safe start-up and operation of sour gas flowlines.

Authors:
; ;
Publication Date:
OSTI Identifier:
7052477
Report Number(s):
CONF-870314-
Resource Type:
Conference
Resource Relation:
Conference: Corrosion '87, San Francisco, CA, USA, 9 Mar 1987
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; 36 MATERIALS SCIENCE; CORROSION INHIBITORS; CORROSION PRODUCTS; CORROSIVE EFFECTS; NATURAL GAS; PIPELINES; CORROSION PROTECTION; STEELS; CORROSION; DEHYDRATION; GLYCOLS; HYDRAULICS; HYDROGEN SULFIDES; NATURAL GAS DISTRIBUTION SYSTEMS; OXIDATION; SODIUM CHLORIDES; SULFUR; SULFUR CONTENT; TRANSPORT; WATER; ALCOHOLS; ALKALI METAL COMPOUNDS; ALLOYS; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; ELEMENTS; ENERGY SOURCES; ENERGY SYSTEMS; FLUID MECHANICS; FLUIDS; FOSSIL FUELS; FUEL GAS; FUELS; GAS FUELS; GASES; HALIDES; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; IRON ALLOYS; IRON BASE ALLOYS; MECHANICS; NONMETALS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; SODIUM COMPOUNDS; SULFIDES; SULFUR COMPOUNDS; 032000* - Natural Gas- Transport, Handling, & Storage; 360105 - Metals & Alloys- Corrosion & Erosion

Citation Formats

Schmitt, G, Lohe, G, and Bruckhoff, W. Influence of corrosion products on the efficiency of inhibitors in sour gas service. United States: N. p., 1987. Web.
Schmitt, G, Lohe, G, & Bruckhoff, W. Influence of corrosion products on the efficiency of inhibitors in sour gas service. United States.
Schmitt, G, Lohe, G, and Bruckhoff, W. Thu . "Influence of corrosion products on the efficiency of inhibitors in sour gas service". United States.
@article{osti_7052477,
title = {Influence of corrosion products on the efficiency of inhibitors in sour gas service},
author = {Schmitt, G and Lohe, G and Bruckhoff, W},
abstractNote = {The influence of the surface status (ground, rusted, mill scaled) on the corrosion of pipeline steels and on the performance of inhibitors was studied under conditions relevant to high pressure transport gas lines for dehydrated sour gas. In systems containing triethylene glycol (TEG), small amounts of water, NaCl and solid elemental sulfur under 16 bar H/sub 2/S at 25/sup 0/C, rusted surfaces experience increased corrosion rates, include more severe hydrogen attack and need significantly higher inhibitor concentrations. Rusted steel even in the absence of other components might undergo corrosion and hydrogen damage due to the formation of elemental sulfur and water at the interface by reaction of rust with H/sub 2/S. Mill scale gives considerable protection under moderate corrosion conditions (low water and chloride concentration in TEG) and can serve as a barrier layer against contact corrosion by elemental sulfur. The experimental results are applied for safe start-up and operation of sour gas flowlines.},
doi = {},
url = {https://www.osti.gov/biblio/7052477}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Conference:
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