氨还原SO_2到单质硫反应条件研究

Studies of Experiment Conditions on Reduction of Sulfur Dioxide by Ammonia to Elemental Sulfur

在 Ni O/ Al2 O3 催化剂上研究了反应条件对氨还原 SO2 到单质硫反应转化率、硫的选择性及硫产率的影响 ,得到了具有较高单质硫产率的最佳反应条件 ,即温度 880℃ ,空速 780 0 h- 1及原料气摩尔进料比 (NH3 / SO2 )等于1.3时硫产率达到最大值。氧气的存在对氨还原 SO2

Effects of reaction conditions on the reduction of sulfur dioxide by ammonia to elemental sulfur were studied. A higher yield of elemental sulfur can be achieved under the following conditions:Temperature around 880°C, a space velocity 7800 h-1 and 1.3 molar feed ratio of NH3 to SO2. The NiO/Al2O3 catalyst is not resistant to oxygen.