Micro rotational flow smoke waste heat utilizing device

Abstract

The invention provides a micro rotational flow smoke waste heat utilizing device. The device comprises a heat exchanger, and the heat exchanger comprises a heat absorption section and a heat releasingsection. The heat absorption section is mounted at the tail of a smoke flue. Smoke passes through the heat absorption section, heats a medium in the heat absorption section and then is exhausted. Theheat releasing section is mounted in an air flue, and air entering a boiler through the air flue passes through the heat releasing section. The medium is heated by the smoke and then enters the heatreleasing section to heat the air, and the medium obtained after heat releasing is completed in the heat releasing section flows back to the heat absorption section. When the medium flows in pipe cavities of the heat absorption section and the heat releasing section, micro rotational flow can be formed. The micro rotational flow smoke waste heat utilizing technology is adopted for recycling the waste heat of the smoke, the outlet smoke exhaust temperature of the smoke flue of the boiler is reduced, and the air is heated through the recycled waste heat; and the fuel consumption per unit outputis reduced, and safe and economical operation of the tail heated face of the boiler is further improved.

Description

technical field [0001] The invention relates to the technical field of energy saving and environmental protection, in particular to a device for utilizing waste heat of micro-swirl flue gas. Background technique [0002] Since the flue gas emitted by the boiler during operation contains sulfur components in varying degrees, sulfur and other components in the flue gas will form sulfuric acid, which will cause low-temperature acid dew corrosion on the heating surface of the air preheater or heat exchanger of the boiler. , Cause problems such as corrosion, leakage, and clogging of the heating surface of the boiler air preheater or heat exchanger, which directly affect the thermal efficiency of the boiler and the safe operation of the boiler. Direct discharge of flue gas into the atmosphere will lead to high exhaust gas temperature at the outlet, heavy load on the heating surface at the boiler tail, and unusable waste heat of flue gas. Exhaust is also the primary task of every ...

AI Technical Summary

Problems solved by technology

[0002] Since the flue gas emitted by the boiler during operation contains sulfur components in varying degrees, sulfur and other components in the flue gas will form sulfuric acid, which will cause low-temperature acid dew corrosion on the heating surface of the air preheater or heat exchanger of the boiler. , causing problems such as corrosion, leakage, and clogging of the heating surface of the boiler air preheater or heat exchanger, which directly affect the thermal efficiency of the boiler and the safe operation of the boiler

Direct discharge of flue gas into the atmosphere will lead to high exhaust gas temperature at the outlet, heavy load on the heating surface at the boiler tail, and unusable waste heat of flue gas. Exhaust is also the primary task of every enterprise, which requires a device that can efficiently and safely utilize the waste heat of boiler flue gas

Images