Flue gas desulfurization process

Abstract

The invention discloses a flue gas desulfurization process, which comprises the following steps that an absorption tower body is made into a cylindrical vertical structure; a flue gas inlet is formedin the side surface of the bottom; a flue gas outlet is formed in the top; the flue gas enters an inner cavity of the tower body from the flue gas inlet and is exhausted from the flue gas outlet at the top; three scattered edge annular plates are arranged at the inner side of the cylinder wall according to a certain dimension; a water distribution device consists of an upright post, three conicalwater distribution caps and a water overflowing groove; the water overflowing groove and the three conical water distribution caps are connected in series onto the upright post according to a certaindimension. Through the arrangement of a novel water distribution structure, the process solves the problems that in the prior art, water mist sprayed from a spray nozzle cannot cover the whole cross section space; a blind angle exists in the spraying space; the spray nozzle is prone to blockage and damage, so that the gas and liquid phases cannot realize sufficient contact; the absorption efficiency on sulfur dioxide is reduced; the subsequent treatment on the desulfurization waste water is incomplete. The advantage of high desulfurization efficiency is realized; the process is worthy of beingpopularized and used.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a flue gas desulfurization process. Background technique [0002] As one of the main environmental pollutants, sulfur dioxide is the main cause of acid rain. Sulfur dioxide can damage the physiological functions of plants and slow down the growth of crops and forests. At the same time, if the human body inhales high concentrations of sulfur dioxide gas, it will have a strong impact on the respiratory tract. Therefore, sulfur dioxide is the main air pollutant, and its emission control technology has been widely valued. In recent years, sulfur dioxide emission has caused 40% of my country's land area to be harmed by acid rain, and the annual loss caused by it is as high as 1,100. According to the current emission control level, the sulfur dioxide emitted by the petroleum refining industry will reach 126,993 t / a by 2020. Therefore, controlling pollution and reducing s...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a flue gas desulfurization process, which has the advantages of high desulfurization efficiency, and solves the problem that in the existing technology, the water mist sprayed from the nozzle cannot cover the entire cross-sectional space of the tower body, and there is a dead angle in the spray space. , and the nozzles are prone to clogging and damage, which makes the gas-liquid phases unable to fully contact, reduces the absorption efficiency of sulfur dioxide, and the follow-up treatment of desulfurization wastewater is not perfect