F－T合成铁催化剂羰基硫中毒行为的研究

在获得Ｆ－Ｔ合成本征动力学模型的基础上，对Ｆ－Ｔ合成Ｆｅ－Ｃｕ－Ｋ业催化剂ＣＯＳ中毒本征失活动力学进行了研究。所考察条件为：合成气中ＣＯＳ浓度分别为５１、１２９和２４５ｐｐｍ，空速为１８００～２０００ｈˉ１，温度为５０４～５５６Ｋ，压力为２．３ｌＭＰａ，催化剂粒度为０．１５４～０．１８０ｍｍ。中毒过程催化活性模型值与实验值符合较好，且催化剂在合成气中低硫浓度时其失活速率快。并用ＸＲＤ和ＴＥＭ考察了催化剂表面硫的形貌。

Study of poisoning behavior of Fe-Cu-K catalyst by COS in Fischer-Topsch synthesis

ased on the intrinsic kinetics model for F-T synthesis,kinetics for the deactivation of Fe-Cu-K commercial catalyst in Fischer-Topsch synthesis was studied.The investigation was carried out tinder the following conditions: COS concentrations in syngds, 51,129,and 245 ppm respectively; space velocity, 1800-2000 h-1; temperature, 504-556K; pressure, 2.31 MPa; particle size of catalyst, 0.154-0.180mm. The catalytic activity model data in the posisoning course were in better keeping with the experimental data. The deactivation rate of te catalyst was more rapid at lower concentrations of sulphur in syngas. The appearances and shapes of sulphur on the catalyst surface were determined by XRD and TEM methods.