The Function and the Use of Desulphurizer

Ⅰ. Introduction of the the desulphurizer


Desulphurizer generally refer to agents that remove free sulfur or sulfur compounds in fuels, raw materials, or other materials; in the control and treatment of pollutants, desulphurizer can remove sulfur oxides (including SO2 and SO3) in the exhaust gas. This mixed solution desulfurizer has surface activity, can catalyze the oxidation of SO2, accelerate the dissolution of CaCO3, promote the rapid oxidation of CaSO3 to CaSO4, strengthen the precipitation of CaSO4, reduce the liquid-gas ratio and the calcium-sulfur ratio, and decline the evaporation of water. When the SO2 concentration at the flue gas inlet increases and is higher than the design value, the PH value in the reaction tank of the absorption tower decreases, and a larger Ca/S ratio is required. When the volume of the reaction tank of the absorption tower is not enlarged, CaCO3 can quickly dissolve, increase the concentration of calcium ions, keep the pH value of the slurry in the normal range, and have a certain buffering effect on the pH value.


Ⅱ. The use of desulfurizer


The role of the desulphurizer is to desulfurize, and the desulfurizer used in different applications will be different. For example, iron oxide red is a solid desulfurizer, and it can be desulfurized with or without oxygen. The principle is to adsorb the sulfur-containing compounds in the exhaust gas into the pores of the desulfurizer and change its chemical composition to purify the gas. It is generally used for coloring and rubber devulcanization, and it is also conducive to the adhesion of rubber and metal. You can use related desulphurizer according to your own needs.


Commonly used method of desulfurization agent. Most desulfurizers used to remove sulfur dioxide in the flue gas are composed of cheap lime, limestone, and alkaline solutions prepared with lime-based agents. The desulfurizer can absorb most of the sulfur dioxide in the flue gas and fix it in the fuel slag. Chemical plants, smelters, etc. often use sodium carbonate, alkaline aluminum sulfate and other solutions as desulfurizers to treat tail gas containing sulfur dioxide, which can be recycled. Calcium manganese is a composite alloy composed of silicon, calcium, and manganese, an ideal composite deoxidizer and desulfurizer. It is widely used in the production of high-quality steel, low-carbon steel, stainless steel and other steel grades, and special alloys such as nickel-based alloys and titanium-based alloys. It can also be used as a warming agent in a converter steelmaking workshop or as an inoculant for cast iron and an additive in the production of ductile iron.

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