甲烷三重整制合成气

甲烷三重整是利用CO₂-H₂O-O₂ 同时重整甲烷的过程。该工艺既可以生产H₂/CO 为1.5 —2.0的合成气,又可以缓解甚至消除催化剂的积炭,适合于更廉价地生产用于合成甲醇、二甲醚以及清洁燃料等下游产品的合成气。本文重点评述了近年来国内外甲烷三重整制合成气在热力学、催化剂、反应器、动力学等方面的研究进展,指出甲烷三重整反应在电厂烟气、煤层气、天然气综合利用方面具备良好前景,但要通过该过程实现廉价合成气的生产,仍需研制高活性、抗积炭性能强的催化剂,并对反应器进行改进,以及进行反应机理和反应动力学的深入研究。

Tri-Reforming of Methane to Synthesis Gas

Tri-reforming of methane is a novel process of methane reforming by carbon dioxide , steam , and oxygen simultaneously in one reactor. Tri-reforming of methane can not only produce synthesis gas with H₂/CO ratio of 1.5 —2.0 but also mitigate or eliminate coke deposition of catalyst . It is fit for producing synthesis gas which can be used for production of chemicals (such as methanol and dimethyl ether) , and ultra-clean fuels (such as liquid hydrocarbons) at lower cost than current process of steam reforming of methane. In this paper , the progress in tri-reforming of methane to synthesis gas is reviewed , including thermodynamics , catalyst development , reactor and kinetic behavior. We also point out the favorable foreground of tri-reforming on synthetical utilization of flue gas , coal-bed methane and natural gas. In order to make the process of tri-reforming of methane to synthesis gas economically feasible , what still should be done are developing high-active and coke-resistant catalyst , improving reactor , and probing mechanism of reaction and kinetic behavior.