Flue gas dehumidification and white removal apparatus for wet desulfurization

Abstract

A flue gas dehumidification and white removal apparatus for wet desulfurization comprises a flue gas treatment chamber positioned on the upper portion of a chimney, the flue gas treatment chamber is hermetically connected with the chimney through a transitional buffer chamber, the inner upper portion of the flue gas treatment chamber is provided with a gas mixing area, the inner lower portion of the flue gas treatment chamber is provided with a plurality of spaced heat transfer partitions, forming alternated flue gas passage and air passage, the flue gas passage is connected at one end to the transitional buffer chamber and connected at the other end to the gas mixing area, the air passage is connected to an air inlet arranged on the lateral side of the flue gas treatment chamber and is communicated with the gas mixing area, and the upper end of the gas mixing area is provided with a gas outlet. Flue gas subjected to heat exchanging is mixed well with air in the gas mixing area, uniform dispersion of wet gas is facilitated, teat balance is also guaranteed for the parts of the mixed gas, and post-discharge stable rise and diffusion of the mixed gas is facilitated. The flue gas dehumidification and white removal apparatus for wet desulfurization has no additional heating device and has low energy consumption, pollutant emission is decreased at the premise of removing white smoke from the chimney, and environmental protection is benefited.

Description

technical field [0001] The invention relates to a device for treating flue gas after wet desulfurization, in particular to a flue gas dehumidification and whitening device for wet desulfurization. Background technique [0002] Ultra-low emission refers to the use of integrated technologies for the efficient and coordinated removal of various pollutants in the process of exhaust gas treatment of boilers, heating furnaces, kilns and other combustion and heating devices in industries such as electric power and petrochemical industries, so that the emission concentration of air pollutants meets the corresponding requirements. standard. The denitrification and desulfurization process is a common technology to remove and reduce nitrogen oxides (NOx) and SO2 content in flue gas, and to achieve ultra-low emission standards of flue gas, and is widely used in large quantities. [0003] There are two mainstream out-of-stock process methods: SCR and SNCR, both of which require the use ...

AI Technical Summary

Problems solved by technology

Although this method helps to solve the problems of "white smoke" and "gypsum rain", it will breed new problems at the same time. The flue gas reheater is easily blocked by sulfate crystals and corroded during use. Ammonium sulfate and other crystalline particles are very fine, and will form aerosols when discharged into the atmosphere with smoke, which is one of the culprits of PM2.5, smog

Images