High-temperature coke oven raw gas reformed gas waste heat recovery device and method

The invention relates to a waste heat recovery device and method for high-temperature coke oven raw gas reformed gas, the high-temperature coke oven raw gas reformed gas enters a reformed gas waste heat boiler from a reforming furnace through a reformed gas connecting pipe, the reformed gas is primarily cooled through a front evaporator, and then is cooled to 180 +/-10 DEG C through a superheater, the evaporator and an economizer in sequence; conveying the reformed gas to a downstream reformed gas washing section through an outlet of the boiler; boiler feed water in the reformed gas waste heat boilers is heated by high-temperature coke oven raw gas reformed gas to form superheated steam, the superheated steam of the multiple reformed gas waste heat boilers is combined with the superheated steam of the dry quenching boiler after being combined, and the superheated steam and the superheated steam are sent to a steam turbine power generation unit together for power generation. And the demineralized water tank is