Fuel catalytic reformer based on waste heat utilization

The invention provides a fuel catalytic reformer based on waste heat utilization, the fuel catalytic reformer comprises a heat exchange evaporator, a swirler, a mixing chamber, a collecting tank, a catalytic reaction chamber and a shell, the heat exchange evaporator comprises a first flow channel and a second flow channel; a cyclone, a mixing chamber and a catalytic reaction chamber which are connected in sequence are arranged in the shell from top to bottom in sequence; a first accommodating space is formed among the outer walls of the cyclone, the mixing chamber and the catalytic reaction chamber and the shell; high-temperature waste gas enters the first accommodating space through a high-temperature waste gas inlet, enters the top of the first flow channel through a medium-temperature waste gas connector, and is discharged from the bottom of the first flow channel through a low-temperature waste gas outlet; liquid water enters the bottom of the second flow channel through the liquid water inlet, enters the