天然气、CO_2转化制合成气催化反应性能的研究──(Ⅰ)催化反应性能的研究  

Research on Reforming Natural Gas with Carbon Dioxide to Produce Synthesis Gas ----(I) Activities of Catalysts

作　　者：叶青[1] 金钧[1] 王道[1] 武少华[1] 沈忱 周克斌 

机构地区：[1]北京工业大学化学与环境工程学系,北京100022

出　　处：《北京工业大学学报》1999年第1期50-55,共6页Journal of Beijing University of Technology

摘　　要：以ＣＨ４、ＣＯ２转化反应所筛选出的Ｎｉ－５和Ｎｉ－５ＰＭ为催化剂，在固定床石英反应器上 考察了天然气及天然气主要成分与ＣＯ２转化反应的活性，并将考察筛选出的消炭剂加入到原料 气中，考察了Ｎｉ－５ＰＭ的活性和稳定性。结果表明：对于ＣＨ４、ＣＨ４（含４．８％Ｃ２Ｈ６）、Ｃ２Ｈ４与 ＣＯ２反应体系，低空速时Ｎｉ－５和Ｎｉ－５ＰＭ活性相似、合成气接近平衡，高空速时Ｎｉ－５ＰＭ的活 性大于Ｎｉ－５；对于天然气、ＣＯ２转化反应体系Ｎｉ－５ＰＭ仍具有高活性和高抗积碳性能，加入适 当消碳剂后，产物合成气（Ｈ２＋ＣＯ）摩尔百分含量保持在９６％左右，接近理论值，表明 Ｎｉ－５ＰＭ对天然气、ＣＯ２反应体系具有高的活性、选择性及良好的稳定性．Reforming natural gas with CO2 into Synthesis gas was studied on the base of Ni-5 and Ni-SPM catalyst which was previously selected in the reforming of methane with CO2. The activity, stability, and ability of inhibiting the carbon deposition of Ni-5 and Wi-5PM catalyst was studied in the reform of natural gas with CO2. The results showed that the activity of Ni-5 was higher than that of Ni-5 catalyst and its resistance to carbon deposition was higher than that of Wii-5 catalyst. However, there was carbon deposition in the reactor, formed by cracking of high hydrocarbon of natural gas in the reforming of natural gas with CO2. Therefore a gas "A" was added to feed gas to remove the carbon deposition. The resuts show that it can effectively inhibit carbon deposition with little effect on synthesis yield, catalyst activity, selectivity and stability, and it didn't pass into the gases at exit as well. Thus, Ni-5PM has high activity, selectivity and stability in the reforming of natural gas with CO2.

关 键 词：二氧化碳 天然气 合成气 催化反应 

分 类 号：TE665.3[石油与天然气工程—油气加工工程]