Boiler waste heat recycling system based on flue gas waste heat recovery boiler economizer

Abstract

The invention discloses a boiler waste heat recycling system based on a flue gas waste heat recovery boiler economizer. The boiler waste heat recycling system comprises a boiler and a flue gas waste heat recoverer; the flue gas waste heat recoverer is installed at an outlet of a flue of the boiler; one end of the flue gas waste heat recoverer is connected to tap water through a first heat recoverypump, a second stop valve, a heat preservation hot water tank and a first stop valve; the other end of the flue gas waste heat recoverer is connected to one end of a heat preservation water tank through a third stop valve, the heat preservation hot water tank, a fourth stop valve and a second heat recovery pump; and the other end of the heat preservation water tank is connected to a user througha fifth stop valve and a booster pump. The boiler waste heat recycling system based on the flue gas waste heat recovery boiler economizer is high in heat exchange efficiency, remarkable in energy saving effect and flexible in temperature control, and the flue gas waste heat recoverer has good corrosion resistance; the using efficiency of the boiler can be improved; and operation cost is not needed, a large amount of heat discharged to the atmosphere is recycled, and waste heat recycling is achieved.

Description

technical field [0001] The invention relates to a boiler, in particular to a boiler waste heat recycling system based on a flue gas waste heat recovery boiler economizer, and belongs to the technical field of energy-saving products. Background technique [0002] With the rapid development of my country's economy and the improvement of environmental protection requirements, more and more factories and enterprises (coal-fired, gas-fired, oil-fired) boilers are put into use; due to the increasingly tight resources of diesel and gasoline, the cost continues to rise, the user's fuel With the substantial increase in cost, it is increasingly urgent to improve the efficiency of boilers. Energy conservation and environmental protection are important issues of contemporary global concern, and people's awareness of energy conservation and improvement of energy utilization is getting higher and higher. [0003] Due to the needs of boiler engineering design, the exhaust gas temperature c...

AI Technical Summary

Problems solved by technology

[0003] Due to the needs of boiler engineering design, the exhaust gas temperature can generally reach 160 ℃ ~ 500 ℃. The high temperature flue gas discharge not only causes heat waste, but also causes great harm to environmental pollution.

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