Desulfurizing column for flue gas desulfurization

Abstract

The invention discloses a desulfurizing column for flue gas desulfurization. The column comprises a column body, wherein a gas collecting hood is arranged at the top of the column body; the gas outletend of the gas collecting hood is connected with the gas inlet end of the flue gas outlet pipe; a flue gas inlet pipe and a blow-off pipe are arranged on one side of the column body; the blow-off pipe is positioned right below the flue gas inlet pipe; a first liquid guide pipe and a second liquid guide pipe are arranged on the other side of the column body; the second liquid guide pipe is locatedunder the first liquid guide pipe. A spray head is mounted at the liquid outlet end of the second liquid guide pipe; a filter screen is arranged in the spray head; and a slurry pool area is arrangedin the column body. By means of a cleaning rod and a rotating shaft, the first liquid guide pipe is arranged in the slurry tank area, so that a mixed solution in the slurry tank area flows into the sedimentation tank through the first liquid guide pipe, and when the mixed solution passes through the first liquid guide pipe, the liquid pushes the cleaning rod to rotate, so that the cleaning rod cleans the inner side wall of the first liquid guide pipe, and calcium sulfite or calcium sulfate mixed in the mixed solution is prevented from being accumulated in the first liquid guide pipe.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a desulfurization tower for flue gas desulfurization. Background technique [0002] Desulfurization generally refers to the process of removing sulfur from fuel before combustion and before flue gas emission. It is one of the important technical measures to prevent and control air pollution. At present, there are generally three desulfurization methods: pre-combustion, in-combustion and post-combustion desulfurization. With the development of industry and the improvement of people's living standards, the thirst for energy is also increasing, and the sulfur dioxide in the flue gas of coal combustion has become the main cause of air pollution. Reducing sulfur dioxide pollution has become an urgent task of today's atmospheric environment governance. Many flue gas desulfurization processes have been widely used in industry, and it also has important practical sign...

AI Technical Summary

Problems solved by technology

[0003] In the process of wet desulfurization, in order to make the sulfide in the flue gas fully react with the desulfurization solution, a pulp pool area is usually set in the desulfurization tower, and the sulfide in the flue gas can react with the desulfurization solution to produce sulfide with low solubility. Calcium sulfite and calcium sulfate can easily lead to scaling and blockage in the desulfurization tower

Images