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Desulfurization wastewater treatment process and treatment device thereof

A desulfurization wastewater and treatment device technology, which is applied in the direction of gaseous effluent wastewater treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high salt content, corrosiveness, and high operating cost of desulfurization wastewater , to achieve the effect of reducing investment and construction costs and operating costs, prolonging service life and improving evaporation efficiency

Pending Publication Date: 2022-01-07
HUANENG CHAOHU POWER GENERATION
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Problems solved by technology

[0003] Desulfurization wastewater has high salt content, complex composition, corrosiveness, and strong pollution. It must be treated separately before it can be discharged, otherwise it will cause great pollution to the environment. In the existing desulfurization wastewater treatment process, the wastewater will be treated multiple times. evaporation, this process will consume a lot of resources and make the operation cost very high, so we propose a desulfurization wastewater treatment process and its treatment device to solve the above problems

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  • Desulfurization wastewater treatment process and treatment device thereof
  • Desulfurization wastewater treatment process and treatment device thereof
  • Desulfurization wastewater treatment process and treatment device thereof

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0038] refer to Figure 1-8 , a desulfurization wastewater treatment process and treatment device thereof, the steps are as follows:

[0039] The hot flue gas produced by the boiler can absorb the high-temperature heat of the exhausted flue gas when it flows through the economizer, recycle the high temperature, and reduce the exhaust temperature of the flue gas at the same time;

[0040] After the flue gas passes through the economizer, it will enter the air heat exchanger, and the high-temperature flue gas contained in the flue gas will be cooled again, and the cooled flue gas will be passed into the flue gas cooler for the final cooling of the flue gas Work;

[0...

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Abstract

The invention discloses a desulfurization wastewater treatment process which comprises the following steps: when hot flue gas generated by a boiler flows through an economizer, high-temperature heat of exhausted flue gas can be absorbed and recycled, and meanwhile, the exhaust gas temperature of the flue gas is reduced; according to the invention, the desulfurization wastewater is conveyed to the wastewater spray evaporator through the wastewater pump, the atomized desulfurization wastewater is sprayed into the flue by adopting the atomizing nozzle, the atomized desulfurization wastewater is quickly evaporated in the flue by utilizing the heat of the flue gas, and impurities in the wastewater enter the dust removal equipment together with fly ash in the form of solid substances along with the flue gas, so that compared with direct flue spray evaporation, bypass spray evaporation can greatly reduce the influence of spray on safe operation of a dust remover; and flue gas waste heat is used for evaporation drying, and desulfurization waste water can be economically and efficiently treated, so that the investment construction cost and the operation cost of a power plant waste water zero discharge system are greatly reduced; and the exhaust gas temperature is reduced through spray, and economic and stable operation of dust removal, a fan and desulfurization equipment is facilitated.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a desulfurization wastewater treatment process and a treatment device thereof. Background technique [0002] In order to maintain the balance of substances in the slurry circulation system of the desulfurization device, prevent the soluble part in the flue gas, that is, the chlorine concentration from exceeding the specified value, and ensure the quality of gypsum, a certain amount of wastewater must be discharged from the system. The desulfurization wastewater mainly refers to the wet desulfurization of boiler flue gas. (Limestone / Gypsum method) During the process, the discharge water from the absorption tower and the flue gas generated by the boiler enter the wet desulfurization system after being dedusted by the dust collector. In the atmosphere, as the flue gas is washed continuously in the absorption tower, the effective components of the absorbent are continuou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/12C02F1/16F23J15/06F23J15/02F23J15/04C02F103/18
CPCC02F1/12C02F1/16C02F1/048C02F1/043F23J15/06F23J15/022F23J15/04C02F2103/18C02F2303/14Y02E20/30
Inventor 孙宝仁侯生存李延怀赖福生
Owner HUANENG CHAOHU POWER GENERATION
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