Boiler water replenishing system capable of collecting waste heat and condensed water

Abstract

The invention discloses a boiler water replenishing system capable of collecting waste heat and condensed water. A boiler blowdown pipe of a boiler is connected with a blowdown expansion tank, a steam outlet of the blowdown expansion tank is connected into a hot water tank through a blowdown flash steam pipe, a blowdown water pipe of the blowdown expansion tank is connected into a continuous-discharge heat exchanger which is further connected with a softened water feeding pipe, the softened water feeding pipe is connected with a water softening station through a water supply pump, the softened water feeding pipe for the continuous-discharge heat exchanger is connected with a boiler secondary energy saver prior to being connected into the hot water tank, and the hot water tank is connected with a hot water outlet pipe which is sequentially connected with a circulating pump, a heat deaerator and a boiler water feeding pump prior to being connected into a boiler water inlet. The boiler water replenishing system has the advantages that centralized use of the waste heat and the condensed water is achieved, steam consumption of the deaerator is reduced, waste heat absorption effect is enhanced, connection of the deaerator is simplified, pollution of the heat and the condensed water to the environment is reduced, and water replenishing for the boiler is unaffected when heat exchange equipment fails.

Description

technical field

[0001] The invention relates to the application of waste heat and condensed water in boiler replenishment water in a cigarette factory, in particular to a boiler water replenishment system for collecting waste heat and condensed water. Background technique

[0002] The sewage and flue gas discharged from the fire tube boiler have a high temperature and contain a lot of heat. Tobacco companies' silk production equipment, combined air conditioners, heat exchangers, etc. produce a large amount of high-temperature and relatively pure condensed water and flash steam, especially the condensed water produced by silk-making equipment has a high temperature. If these waste heat and condensed water are not recycled, it will not only cause energy waste, but also pollute the environment. Although some enterprises directly recycle part of the waste heat, condensed water, flash steam, etc. to the deaerator or other places for utilization, the utilization points are scatte...

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