Spraying type enhanced heat exchange flue gas heat exchange device

Abstract

The invention belongs to the technical field of heat exchange devices, and provides a spraying type enhanced heat exchange flue gas heat exchange device. The device is provided with a flue gas inlet, a flue gas outlet, a plurality of flue gas heat exchangers, a wastewater treatment part and a spraying part, flue gas generated by an engine passes through the flue gas heat exchangers through the flue gas inlet, so that the flue gas flows through the flue gas heat exchangers from top to bottom, and sufficient heat exchange can be achieved. The wastewater treatment part is arranged below the flue gas heat exchangers and can treat wastewater, a spray head of the spraying part can spray water to the flue gas before the flue gas enters into the flue gas heat exchangers, water-soluble nitric oxide in the flue gas is removed, and heat exchange of the flue gas heat exchangers is enhanced. The flue gas and condensed water flow through the flue gas heat exchangers in the same direction, and pulsation noise of liquid in the flue gas is avoided. A water pump assembly is arranged on a pipeline between the spray head and the wastewater treatment part, the treated wastewater is pumped into the spray head to spray the flue gas, at least one flue gas heat exchanger is arranged on the upstream of the spray head, spraying is not needed when the heat exchange temperature is low, water is effectively saved, and resource waste is avoided.

Description

technical field [0001] The invention belongs to the technical field of heat exchange devices, and in particular relates to a spray-type flue gas heat exchange device for enhanced heat exchange. Background technique [0002] During the operation of a gas heat pump driven by a gas engine, the gas engine will generate high-temperature flue gas. The flue gas discharged from the gas engine contains a large amount of heat energy. If it is directly discharged into the air, it will cause energy waste. At present, the way to solve this waste of flue gas heat energy is to install a flue gas heat exchanger on the gas engine, through which the flue gas heat exchanger absorbs the sensible heat and latent heat of water vapor contained in the flue gas, and the condensed water energy generated Take away part of the nitrogen oxides in the flue gas, thereby purifying the flue gas. However, the heat exchange efficiency of this kind of flue gas heat exchanger is poor, the heat exchanger has a ...

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Problems solved by technology

However, the heat exchange efficiency of this kind of flue gas heat exchanger is poor, the heat exchanger is large in size and high in cost, and the heat exchange distribution between each flue gas heat exchanger cannot be adjusted when there are multiple flue gas heat exchangers

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