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将放大制备的原颗粒K-Fe-MnO/Silicalite-2催化剂在单管扩大试验装置上进行CO加氢制低碳烯烃反应,可达到CO转化率70%~90%、C_2~C_4烯烃选择性72%~74%的反应结果,并具有很好的稳定性和单程操作寿命;研究单管扩大试验工艺参数对该催化剂CO加氢制低碳烯烃性能的影响。结果表明,该催化剂可适合于较宽的反应工艺条件范围。反应温度、压力、空速的变化对催化剂CO加氢反应制低碳烯烃选择性的影响较温和;考察了催化剂的单程运转寿命,并进行了单管试验物料平衡计算,取得一些关键性数据,表明在反应尾气不循环的情况下,1m~3(STP,下同)(H_2/CO＝2:1)的合成气可转化为68.1gC_2~C_4烯烃,如将未转化的CO和H_2进行循环反应即可生成高达86.6g的低碳烯烃。
The K-Fe-MnO / Silicalite-2 catalyst prepared by enlarging was used to carry out CO hydrogenation to produce light olefins on a single pipe expansion test unit, and the CO conversion of 70% ~ 90%, the selectivity of C_2 ~ C_4 olefins 72% ~ 74% of the reaction results, and has good stability and one-way operation life; study single tube expansion test process parameters on the performance of the catalyst CO hydrogenation of light olefins. The results show that the catalyst can be suitable for a wide range of reaction conditions. The changes of reaction temperature, pressure and space velocity have mild effects on the selectivity of light olefins via CO hydrogenation of catalyst. The one-way running life of catalyst was investigated, and the single-tube test material balance calculation was carried out. Some key data were obtained, The results show that the synthesis gas of 1m ~ 3 (STP, the same below) (H_2 / CO = 2: 1) can be converted into 68.1g C_2 ~ C_4 olefins under the condition of no reaction off-gas, such as circulating unconverted CO and H_2 The reaction produces up to 86.6 g of light olefins.