Main characteristics of several common

The most commonly used desulfurizer for removing sulfur dioxide from flue gas are cheap lime, limestone and alkaline solution prepared with lime. Desulfurizer can absorb most of sulfur dioxide in flue gas and fix it in fuel residue. Chemical plants and smelters often use sodium carbonate, alkaline aluminum sulfate and other solutions as desulfurizer to treat tail gas containing sulfur dioxide, which can be desorbed and recycled.


Iron oxide desulfurizer is a kind of solid desulfurizer, which can be desulfurized with or without oxygen. The principle is to chemically adsorb the sulfur compounds in the waste gas into the small holes of the desulfurizer, change its chemical composition and purify the gas. When the desulfurizer reaches saturation, that is to say, it is no longer capable of desulfurization, so it needs to be regenerated, such as steam stripping regeneration. However, after a long time of use, the activity of iron oxide desulfurizer will continue to decline. For example, the small hole in the desulfurizer will be blocked by some impurities, and then the desulfurizer will be inactivated. However, when there is trace oxygen in the reaction system, its desulfurization activity can be improved and its service life can be prolonged. The active components can be recovered from waste desulfurizer.