Feed water heating system utilizing boiler flue temperature

Abstract

The utility model discloses a system for heating water by utilizing the temperature of a boiler flue, which belongs to the technical field of boiler waste heat recovery and utilization and is provided with the boiler flue for providing a heat source, and a sleeve is hermetically sleeved on the outer wall of the boiler flue; an interlayer space is formed between the inner wall of the sleeve and the boiler flue, and a water inlet and a water outlet which are communicated with the interlayer space are formed in the side wall of the sleeve; the first pipeline is communicated with the liquid storage tank and the water pump; the water outlet end of the water pump is communicated with a second pipeline which is communicated with the water tank or the water gun; the sleeve is communicated with the first pipeline through the water outlet and the water inlet and is used for heating liquid entering the second pipeline; one end of the third pipeline is communicated with the liquid storage tank, and the other end of the third pipeline is communicated with the second pipeline. According to the utility model, boiler waste heat is utilized to heat water, steam energy is saved, steam scalding is prevented, and the beneficial effects of improving production safety, recycling energy and being low in improvement cost are achieved.

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