Abstract: According to the design concept of industrial pipeline flexibility, CAESAR Ⅱ software is used to calculate the stress of high-pressure hydrogen-containing gas piping system in slurry-bed residue hydrocracking unit. The necessary π-bends are added to increase the pipeline flexibility, and some reasonable suggestions are put forward for the layout of furnace tubes in radiation chamber inside the heating furnace, greatly reducing the forces and torque values at the inlet and outlet of the heating furnace, reducing the number of spring supports and hangers used for the piping system, increasing the safety factors of the piping system, and reducing the investment. This optimization scheme provides convenience for on-site installation, later operation and reconstruction。

Key words: slurry-bed residue hydrocracking；furnace；high pressure hydrogen pipeline; furnace tube')">

slurry-bed residue hydrocracking；furnace；high pressure hydrogen pipeline; furnace tube, stress analysis