An integrated flue gas dehumidification and whitening desulfurization device and its operating method

Abstract

The invention relates to the technical field of flue gas treatment equipment, and discloses a flue gas dehumidification and whitening integrated desulfurization device and its operation method, including a treatment tank, the inner cavity of the treatment tank is divided into two independent left and right chambers for desulfurization Chamber I and desulfurization chamber II, the inner walls of the desulfurization chamber I and desulfurization chamber II are equipped with a collecting bucket, the middle of the collecting bucket is sleeved with an exhaust pipe, and the top of the exhaust pipe extends out of the treatment tank The top of the desulfurization chamber Ⅰ and desulfurization chamber Ⅱ and the inner cavity of the desulfurization chamber Ⅱ and located below the collecting bucket are equipped with heat exchange condensation pipes, and the two heat exchange condensation pipes are respectively connected with the bottom ends of the two exhaust pipes. One side of the treatment tank is provided with a tail gas return pipe. In the present invention, the heat exchange condensation tube is placed in the treatment tank, so that the flue gas enters from the flue gas inlet I or the flue gas inlet II and exchanges heat with the desulfurized tail gas in the heat exchange condensation pipe, so as to achieve the condensation and dehumidification before the flue gas desulfurization Effect, so as to achieve condensation before desulfurization, heat after desulfurization to achieve whitening.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment equipment, in particular to a flue gas dehumidification and whitening integrated desulfurization device and an operating method thereof. Background technique [0002] When the saturated or nearly saturated wet flue gas discharged from the chimney outlet after fossil fuel combustion is in contact with the lower temperature ambient air during the diffusion process of the flue gas, the saturated or nearly saturated wet flue gas will condense and condense due to the temperature drop, showing White or gray, called plume. The smoke plume not only causes visual pollution, but also acid rain or gypsum rain in severe areas. Therefore, the exhaust gas from the chimneys of each factory needs to be cleaned. [0003] At present, for the whitening treatment, the flue gas condensation in front of the desulfurization tower is mainly used to reduce the temperature of the flue gas at the outlet of the d...

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Problems solved by technology

[0005] In view of the deficiencies in the use of the existing flue gas treatment equipment proposed in the background technology, the present invention provides an integrated desulfurization device for dehumidification and whitening of flue gas and its operation method, which is equipped with low-temperature corrosion prevention equipment and high utilization rate of waste heat 1. The advantages of small footprint of the equipment solve the problems raised in the above-mentioned background technology

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