Method and device for removing sulfuric acid smoke in tail gas pipeline of flue gas acid-making system

Abstract

The invention relates to a method and a device for removing sulfuric acid smoke in a tail gas pipeline of a flue gas acid-making system; SiO2 particles are used as crystal nucleuses to be fed into thetail gas pipeline of an acid-making device, and sulfuric acid smoke in tail gas continuously grows on the SiO2 crystal nucleuses drop by drop until the sulfuric acid smoke is separated from gas flowso as to remove the sulfuric acid smoke in the tail gas. The number of the SiO2 crystal nucleuses fed into the tail gas pipeline is determined according to the content of the sulfuric acid smoke in the tail gas so as to remove the sulfuric acid smoke with different concentrations. According to the invention, the acid smoke in the acid-making tail gas is removed by introducing the SiO2 crystal nucleuses into the tail gas pipeline of an acid-making system to condense the sulfuric acid smoke, the method is simple and effective, and no new pollution is formed. Organic silicon is gasified and thencombusted to form the SiO2 crystal nucleuses, the quantity of the SiO2 crystal nucleuses is adjusted by adjusting the quantity of the gasified organic silicon, the adjusting method and the structure are simple, and the quantity of the acid smoke in the tail gas can be flexibly adjusted.

Description

technical field [0001] The invention relates to a method and a device for regulating sulfuric acid fume, in particular to a method and a device for removing sulfuric acid fume in a tail gas pipeline of a flue gas acid making system, and belongs to the technical field of sulfuric acid manufacturing. Background technique [0002] In the flue gas acid system, SO in the converter 2 Catalytic conversion to SO 3 During the process, due to the moisture in the flue gas, acid mist (SO 3 / H 2 SO 4 ), and mixed in the conversion outlet flue gas to the next acid production process and then directly discharged into the tail gas. The usual acid production system is only equipped with washing and other acid removal processes in the latter part of the acid production process, which cannot be based on the exhaust gas. The acid mist content is removed in a targeted manner, therefore, the acid mist content in the exhaust gas is not stable. According to the latest 2020 "Comprehensive Emiss...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the acid mist in the tail gas is not effectively removed in the current flue gas acid making system, the present invention proposes a method and device for removing sulfuric acid mist in the tail gas pipeline of the flue gas acid making system, which can be used according to the concentration of sulfuric acid fume in the tail gas. Targeted reduction of acid mist concentration

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