Flue gas waste heat recovery device

Abstract

The invention relates to a flue gas waste heat recovery device, which comprises a main cylinder, wherein the main cylinder is hollow inside; a heat conversion unit is arranged in the main cylinder; and the bottom end of the main cylinder is connected with a flue gas inlet device. The flue gas waste heat recovery device is characterized in that: the main cylinder is cylindrical, wherein the bottomof the main cylinder is provided with a flue gas distributor, the flue gas distributor is communicated with the flue gas inlet device, and the heat conversion unit is arranged above the flue gas distributor; the heat conversion unit comprises a cold water storage body, a hot water storage body and a heat exchange component, wherein the cold water storage body is externally connected with a water inlet pipeline, and a hot water outlet is externally connected with a water outlet pipeline; and the bottom of the main cylinder is provided with a condensed water outlet. The flue gas waste heat recovery device is suitable for non-industrial occasions, such as families, markets, hosts, restaurants and the like and has the advantages of simple structure, wide application range and capability of deeply utilizing heat in flue gas and potential heat energy in the flue gas; and core components of the flue gas waste heat recovery device are made of stainless steel materials, so that not only scale prevention capability of the product can be enhanced, service life is prolonged, but also quality of domestic water can be ensured.

Description

technical field [0001] The invention belongs to the field of heat energy recovery and reuse, and relates to a heat energy recovery and reuse device, in particular to a flue gas waste heat recovery device for recovering flue gas waste heat in a heat exchange manner. Background technique [0002] At present, the temperature of the flue gas produced by the combustion of conventional fuels (including coal, oil and natural gas) is relatively high, and there is a considerable part of heat energy in the flue gas, especially the heat energy contained in the flue gas containing high-enthalpy water vapor is relatively high. high. If the high-temperature flue gas is directly discharged into the atmosphere through the chimney without treatment, it will cause a great waste of heat energy, especially the latent heat of condensation of the water vapor in the flue gas has not been effectively utilized, and the heat carried by the water vapor is the heat of the exhaust gas. A large part of ...

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Problems solved by technology

[0003] In the prior art, most of the heating surfaces such as boilers and water heaters use partition wall heat exchange after fuel combustion, which cannot effectively recover the latent heat of condensation of water vapor, resulting in waste of heat energy

Although there is also a waste heat recovery device that can directly contact the mixed flue gas, it is an integral boiler with a relatively complicated structure, and it is only suitable for large-capacity and high-pressure parameters on large-scale oil-fired and coal-fired industrial boilers. , with a narrow scope of application

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