In order to eliminate the impact and adverse effects of harp slug flow carried by gas from offshore pipelines on equipment,a tubular slug flow catcher was designed and constructed at a certain onshore terminal.By optimizing the overall structural design,setting two different slopes,and optimizing the anti load design,while reducing the floor area,it is ensured that the slug flow catcher can adapt to large liquid volume impacts and meet the storage and processing requirements of slug flow under various working conditions.This has reference significance for the construction of onshore terminal slug flow catchers.