In the long-term use of natural gas steel pipelines, liquid accumulation in the pipeline and corrosion of the inner wall will occur during the long-term operation of the two-phase flow pipeline. These liquids accumulate at the low points of the pipeline, causing the pressure drop of the pipeline to increase. , reducing the flow area in the pipeline, and the efficiency of transporting natural gas will also be reduced.
The factors that affect the cleaning effect of steel pipes in two-phase flow pipelines include the flow rate and pressure drop that the gas-liquid mixture is allowed to pass through in the gas pipeline; the gas-liquid ratio in the pipeline, the shape of the longitudinal section of the pipeline; The amount of accumulated liquid; the size of the liquid slug capture device; and in offshore pipeline systems, the height between the bottom of the riser and the liquid slug capture device.
The commonly used method for cleaning steel pipes in two-phase flow pipelines is to use ordinary steel pipe cleaning balls and steel pipe cleaning tools. You can also use a steel pipe cleaning tool with a bypass to clean the steel pipes.
Post time: Sep-22-2023