Anticorrosion research of sulfur gas gathering pipeline network

Sulfur gas has strong corrosivity on gathering pipeline network, and it is important to control the sulfur corrosion. The corrosion mechanism of sulfur gas related to the gathering pipeline network is introduced. It is pointed out that the existence of water is the premise condition of the corrosion. All links about the corrosion prevention from design to running stages are searched. The author consider that anticorrosion measures in the design stage to be taken include the selection of pipe material, pipe laying and the design of inhibitor injector, pigging equipment, corrosion monitoring apparatus and relevant accessory device of pipeline network. And in the running stage, inhibitor injecting and cathode protection system are two key jobs to do. It is indicated that dynamic corrosion monitoring/detection is an effective approach to understanding the corrosion situation of pipeline and making decision on working out a scientific plan maintenance.