Deep smoke purification system for removing smoke plume through waste heat and method of system

Abstract

The invention provides a deep smoke purification system for removing smoke plume through waste heat and a method of the system, and belongs to the field of environmental protection. The problems of anexisting method are solved that the resistance of a smoke channel is large, the running and investment cost is high, and only visual pollution can be solved. A smoke outlet of a boiler is sequentially connected with a smoker cooler, a dust remover, a desulfurizing tower, a smoke condenser, a steam reheater and a chimney; condensation circulation water at a condensation circulation water outlet ofa cooling tower / induced draft tower flows back to the cooling tower / induced draft tower through a smoke condensation circulation water pump and the smoke condenser; a cooling circulation water outletof a condensate heater is connected with a cooling circulation water inlet of the smoke cooler, and a cooling circulation water outlet of the smoke cooler is connected with a cooling circulation water inlet of the condensate heater; a condensate forming branch, entering an eighth lower heater, in the boiler is connected with a condensate inlet of the condensate heater, a condensate outlet of thecondensate heater is connected with a condensate outlet of a seventh lower heater, and a condensate outlet of the eighth lower heater is connected with a condensate inlet of the seventh lower heater;a condensate outlet of the steam reheater is connected with a condensate system.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a waste heat utilization type fume plume elimination flue gas deep purification system and method thereof. Background technique [0002] At present, the desulfurization of flue gas mostly adopts wet desulfurization process. After wet desulfurization, it becomes saturated wet flue gas at 45-55°C. When it diffuses into the ambient air with lower temperature, the water vapor in the flue gas will condense to form Droplets, small droplets refract and scatter light, so that the chimney outlet presents a white or gray colored plume. The colored plume contains desulfurization agent, SO 3 , acid mist aerosol, escaped ammonia, soluble salts, heavy metals and organic components, these pollutants are not only important components of PM2.5 fine particles, but also "contribute" to its formation and secondary transformation. It can be seen that the treatment of colored plumes...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of large flue resistance, high operation and investment costs, low heat exchange efficiency of heat exchangers, damage to the water balance of the desulfurization tower and only visual pollution in the current method of eliminating colored plumes, the present invention provides a Flue gas deep purification system and method for waste heat utilization type smoke plume elimination

Images