Applicability Evaluation Method of Coal Synthetic Natural Gas Pipeline Material

Through combing the existing standards of hydrogen pipelines and hydrogen storage vessels, combined with relevant literature, the applicability evaluation methods of coal gas pipelines in hydrogen-containing environment are summarized. From the aspects of strength, plasticity, fracture toughness and fatigue of pipelines, the evaluation methods and judgment basis of hydrogen embrittlement sensitivity are proposed, which provides technical support for the evaluation of serviceability and safe operation of hydrogen-containing coal-made synthetic natural gas pipeline materials.