Steam boiler steam waste heat recycling system and method

Abstract

The invention discloses a steam boiler steam waste heat recycling system and method.The system comprises a steam boiler body, an air extractor, a heat preservation water storage tank, a steam turbine, a first water pump and a second water pump, an air extraction opening is formed in the top of the steam boiler body, and the air extraction end of the air extractor is connected with the air extraction opening through an air extraction pipe; a first valve is arranged on the condensation pipe, the exhaust end of the air extractor is communicated with a steam inlet of the steam turbine through an exhaust pipe, and the water pumping end of the first water pump is connected with drain water of a steam turbine condenser. The drainage end of the first water pump communicates with a water supply pipe of the steam boiler body through a first drainage pipe. The pumping end of the second water pump communicates with the heat-preservation water storage tank through a second pumping pipe, and the drainage end of the second water pump communicates with a water feeding pipe on the back face of the steam boiler body through a second drainage pipe. The heat of the residual steam in the boiler can be utilized, and the recycling characteristic is achieved.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery, and in particular relates to a system and method for recovering and utilizing steam waste heat of a steam boiler. Background technique [0002] According to the fuel, steam boilers can be divided into electric steam boilers, oil-fired steam boilers, gas-fired steam boilers, etc.; according to the fuel supply mode, steam boilers can be divided into manual combustion steam boilers and fully automatic chain combustion steam boilers; according to the structure, they can be divided into vertical steam boilers , Horizontal steam boilers, small steam boilers are mostly vertical structures with single and double returns, and large steam boilers are mostly horizontal structures with three returns. [0003] After the steam boiler is used, the remaining steam in the boiler is usually directly discharged outside the boiler, which is too wasteful and causes certain pollution to the surrounding env...

AI Technical Summary

Problems solved by technology

[0003] After the steam boiler is used, the remaining steam in the boiler is usually directly discharged outside the boiler, which is too wasteful and causes some pollution to the surrounding environment

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