Heat recovery coincidence economizer

The utility model provides a heat recovery coincidence economizer, sewage is imported, outlet of sewer formula structure as an organic whole, the sewage passageway on by sewage under passageway and the sewage passageway form, passageway, dirty underway communicate with each other with sewage import, outlet of sewer respectively on the sewage, cooling device is divided into cooling plate, well intercooling but board and lower cooling plate, goes up the cooling plate and covers on sewage on the passageway, and lower cooling plate covers on dirty underway, and well intercooling is but on plate holder and the sewage in the middle of passageway and the dirty underway, power module comprises last thermoelectric module and lower thermoelectric module, goes up thermoelectric module and places in on the sewage between passageway and the last cooling plate, and lower thermoelectric module is placed in between dirty underway and time cooling plate, fixing device is fixed as an organic whole with sewage passageway, power