Abstract: With the "carbon peaking" and "carbon neutrality" goal proposed, the enterprises have to pay more attention to the removal of sulfur dioxide. Due to the characteristics of low cost, simple preparation, high desulfurization performance and easy operation, the granular dry desulfurization process will become the trend of flue gas desulfurization in the future. Binder and pore-forming agent used in granular dry desulfurizer were introduced. Adding binder to the desulfurizer could increase the mechanical strength and desulfurization efficiency of desulfurizer and make desulfurizer difficult to pulverize. Adding pore-forming agent to desulfurizer could increase its specific surface area and porosity, thus increasing the contact chance between desulfurizer and sulfur dioxide, and improving the desulfurization efficiency. By adding binder and pore-forming agent to granular dry desulfurizer, the utilization rate of granular dry desulfurizer could be greatly improved, so the cost of desulfurization was reduced. In the future, it is the development trend to add cheap binder and pore-forming agent into granular dry desulfurizer to improve the mechanical strength and desulfurization efficiency of desulfurizers and reduce the cost.

Key words: granular dry desulfurizer, binder, pore-forming agent