Abstract: This paper introduces the outline features of equipment, the plane layout and the key points of connecting pipeline planning for the reformer drum of the 40000 Nm3/h hydrogen plant in a refinery. The reformer drum is connected with two waste heat boilers at the same time. The riser from the outlet of the two waste heat boilers to the inlet of the drum can be considered as belonging to the same drum riser piping system. The stress analysis software CAESARII is used to calculate and optimize the design of the steam drum piping system of the reformer. The problems in the design are discussed in this paper, which can provide reference for the design of similar units in the future.

Key words: hydrogen plant, reformer, drum riser, piping stress analysis