Cooling and heat recovery comprehensive utilization system

The utility model relates to a cooling and heat recovery comprehensive utilization system in the field of heat energy utilization, which comprises a workshop heat recovery system and a tail gas heat utilization system, the workshop heat recovery system comprises a first heat exchanger, a workshop cooler, a second heat exchanger and a cooling reservoir; the tail gas heat recovery system comprises a smoke temperature recovery device and a water storage tank, the water storage tank comprises a low-temperature water storage tank and a high-temperature water storage tank, the bottoms of the low-temperature water storage tank and the high-temperature water storage tank are communicated, and the smoke temperature recovery device acts on a smoke outlet of the gas-fired boiler. The smoke temperature recovery device at least comprises a first-stage smoke temperature recoverer, a second-stage smoke temperature recoverer and a third-stage smoke temperature recoverer which are communicated in sequence; the heat of tail ga