Hydrogen-rich conveying system of propane dehydrogenation device

The utility model relates to a hydrogen-rich gas conveying system of a propane dehydrogenation device, which comprises a main conveying pipeline connected with a cold box of the propane dehydrogenation device and used for conveying hydrogen-rich gas to a downstream user gas pipe network; the online monitoring unit comprises a flow meter and a pressure meter which are arranged on the main conveyingpipeline and are respectively used for recording the flow and pressure of the hydrogen-rich gas pipeline network for the user in real time; the pressure control loop comprises a first control loop and a second control loop, the first control loop and the second control loop are both communicated with a torch system on site, a pressure control valve is arranged on the first control loop, and a safety valve is arranged on the second control loop. According to the system, a pipe conveying mode is adopted, hydrogen-rich (hydrogen) can be directly conveyed to a user from the propane dehydrogenation device, long-distance c