Steam waste heat recovery device and method

The invention relates to the technical field of waste heat recovery, and particularly discloses a steam waste heat recovery device and method.The steam waste heat recovery device comprises a cover body, a first box body is arranged below the cover body, an energy storage clamping groove unit is arranged in the first box body, and a plurality of energy storage units are detachably installed in the energy storage clamping groove unit in a matched mode; the energy storage unit comprises a second box body, an internal pipeline and a partition plate, one end of the upper surface of the second box body is provided with a first filling port communicated with the upper energy storage inner cavity, the other end of the upper surface of the second box body is provided with a second filling port, a conveying pipe is further arranged in the upper energy storage inner cavity, and the top and the bottom of the conveying pipe are communicated with the second filling port and the partition plate respectively; the internal pi