Furnace kiln wet flue gas white-elimination system

Abstract

The invention discloses a furnace kiln wet flue gas white-elimination system, and relates to a white-elimination process of a wet flue gas after spray cooling of furnace kiln flue gas. The system comprises a gas-gas heat exchanger, a flue gas spray cooling apparatus and a fan. A flue gas and air are subjected to heat exchange, the flue gas after cooling enters the flue gas spray cooling apparatus,the wet flue gas after cooling is mixed with hot air to obtain a mixture, the mixture is heated and dehumidified, and then discharging is carried out through a chimney, and thus the white-eliminationrequirement is realized. The process system is simple, emission of air pollution and secondary pollutants is reduced while the consumption of a spray cooling liquid is reduced during a flue gas cooling process, and at the same time, the demand of flue gas white elimination is solved, so that the system has multiple purposes. Moreover, the implementation cost is low, and economic and social benefits are remarkable.

Description

technical field [0001] The present invention relates to the application field of flue gas whitening, in particular to a wet flue gas whitening process after furnace flue gas is sprayed and cooled. The heat exchange between flue gas and air is used to realize the flue gas cooling, and then the cooled wet flue gas is mixed with the flue gas. After the hot air is mixed, the temperature is raised and the humidity is lowered, and it is discharged through the chimney. After the flue gas is cooled, the consumption of spray cooling fluid can be effectively reduced. At the same time, the emission of air pollution and secondary pollutants can be reduced under the condition of whitening the flue gas . Background technique [0002] Most of the furnace flue gas in my country contains sulfur dioxide, nitrogen oxides, particulate matter and acid gas, and has the characteristics of high moisture content, easy to form acid mist, and high acid dew point temperature. Taking the titanium dioxid...

AI Technical Summary

Problems solved by technology

[0014] In view of the high moisture content of flue gas from furnaces and kilns, and the common problems of existing technologies: corrosion, clogging, high energy consumption, poor whitening effect, etc., by adjusting the whitening system process, the smoke is reduced on the basis of solving low-temperature corrosion problems. On the basis of lowering the flue gas temperature, the amount of spraying can be reduced, thereby reducing the moisture content and solid content of the flue gas, reducing energy consumption, reducing equipment volume, controlling transformation costs, and improving system reliability.

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