Feasible process conditions for reforming of gas mixtures of CH₄ and CO₂ into CO-rich synthesis gas are dictated by the risk of carbon formation. To overcome this risk, a minimum steam requirement exists for the process as determined by thermodynamic considerations. This work describes an approach for using a well-known nickel-based catalyst system to enable production of CO-rich synthesis gas at low steam-to-hydrocarbon-carbon (S/C) ratios. The concept utilizes a two-reactor approach where traditional steam reforming is done initially, followed by CO₂ addition to the hot synthesis gas and subsequent conversion in an adiabatic reactor, a so-called Adiabatic POst Converter (APOC). This allows for operating at overall S/C ratios of below 1.5; which is much lower than what is possible in a conventional fired reformer. The central element of the APOC is that the temperature is kept higher than 700–800 °C to circumvent the carbon limits. The process elements were demonstrated by a combination of thermodynamic calculations, process calculations, and laboratory experiments. The concept allows for design of significantly more compact reformers (up to 30 % reduced size), which in turn also reduces firing and thereby CO₂ emissions. The concept can also be used in existing plants where the capacity can be boosted by adding an APOC.

将CH ₄和CO ₂的气体混合物重整为富含CO的合成气的可行工艺条件取决于形成碳的风险。为了克服该风险，通过热力学考虑确定该过程的最低蒸汽需求。这项工作描述了一种使用众所周知的镍基催化剂系统的方法，该方法能够以低的蒸汽与烃碳（S / C）比率生产富含CO的合成气。该概念利用了两反应器方法，该方法首先进行传统的蒸汽重整，然后再进行CO ₂转化。除了热合成气和在绝热反应器中的后续转化，即所谓的绝热POst转化器（APOC）。这样可以在低于1.5的总S / C比下运行；这比传统的燃烧重整器要低得多。APOC的中心要素是保持温度高于700–800°C以规避碳限制。通过热力学计算，过程计算和实验室实验的结合证明了过程要素。该概念允许设计更紧凑的重整器（尺寸减小多达30％），这反过来又减少了燃烧，从而减少了CO ₂排放。该概念还可以用于现有工厂，在这些工厂中，可以通过添加APOC来提高产能。