Main characteristics of desulfurizer

The most commonly used desulfurizers to remove sulfur dioxide in flue gas are cheap lime, limestone and alkaline solution prepared with lime. The desulfurizer can absorb most of the sulfur dioxide in the flue gas and fix it in the fuel slag. 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. It can be desulfurized with or without oxygen. The principle is that sulfur compounds in the waste gas are chemically adsorbed into the pores of the desulfurizer to change its chemical composition so as to purify the gas. When the desulfurizer reaches saturation, that is, it no longer has desulfurization capacity, it needs to be regenerated, such as steam stripping regeneration. However, after long-term use, the activity of ferric oxide desulfurizer will continue to decline. If the pores are blocked by some impurities, the desulfurizer will be deactivated. 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.