| 摘要 |
The present invention provides high-strength activated carbon having a high adsorption capacity, excellent in desulfurization and denitration performance and capable of withstanding re-circulated use in a moving bed type dry desulfurization and denitration process. <??>The present invention is activated carbon produced from coal wherein: desulfurization performance is enhanced by securing required pore volume by controlling volatile matter to 2.0% or more and the content of fixed carbon to 87 to 95%; denitration performance is enhanced and strength is secured, while economical efficiency is maintained, by controlling the amount of an Fe2O3 + TiO2 component to 0.7% or more; the fusion of the pores of the activated carbon by the SO3 + H2O component during desulfurization is suppressed by controlling the amount of a K2O + Na2O + CaO + MgO component to 0.3 to 1.0%; and durability is enhanced by suppressing the powdering during denitration caused by the ammonium sulfate formation resulting from the adsorption of ammonia. <??>Further, the present invention is a method of producing activated carbon by using semicoke produced from coal by low-temperature carbonization as the main material: in which method the kind of coal, wherein the amount of the mobile hydrogen components calculated from the results of the NMR measurement at a temperature at which the coal is in a plastic state is 30% or less, is used as the material coal of the semicoke. <IMAGE> |
