【摘要】 利用大型流化床制得了适用于脱除烟道气中二氧化硫的不定形活性焦ACA,并对其进行了特性分析,在固定床上考察了不同条件下脱除SO2的性能。与硫容相近的商业活性焦ACB的脱硫性能对比,发现其脱硫性能较好。实验结果表明,在烟气中的二氧化硫的体积分数为0.05%～0.12%,反应温度为80℃～100℃,空速(GHSV)为1200h-1,O2的体积分数为6%,水蒸气为10%的情况下,活性焦ACA保持SO2脱除率在90%以上达5h。再生循环脱硫实验表明,活性焦ACA具有良好的再生脱硫活性。更多还原

【Abstract】 A kind of active coke （AC-A） for SO₂ removal from flue gas was directly produced from a large scale fluidized bed gasifier. The desulphurization behavior and characteristics of the active coke （AC-A） were investigated under different conditions and compared with a commercial active coke （AC-B） with approximate saturated sulphur capacity. It is found tht adsorption temperature has complicate effect on the adsorption behavisor of AC-A produced. AC-A has a maximum sulfur removal ability at 100℃. It is not surprised to see a short adsorption period of AC-A with the increase of gas hourly space velocity （GHSV） or SO₂ concentration. There are suitable values of oxygen concentration （about 6%） and steam concentration （about 10%） for AC-A to obtain high sulfur removal ability. AC-A prepared shows higher desulfurization ability than commercial AC-B at the same adsorption conditions. Meanwhile, the desulphurization ability of regenerated active coke AC-A is also better than that of regenerated AC-B after every regeneration courses. This kind of active coke can be potentially used in the flue gas desulfurization, though efforts are needed to modify it.更多还原