Syngas

In B-XTL processes, a gasification step converts the feed into a synthesis gas (CO and H₂ mixture), which undergoes the Fischer-Tropsch reaction after H₂/CO ratio adjustment and CO₂ removal. The synthesis gas can also be produced by Autothermal reforming from natural gas. Due to the large feedstocks variety that can be processed, significant variations of the composition of the synthesis gas can be expected. Especially, this affects the nature of the impurities that are present (element, speciation), as well as their relative contents. These are mainly H₂S, COS, HCN, NH₃, HCl, arsine and mercury as well as metal carbonyls. A multi-step purification of the syngas is thus required, to ensure a deep removal of trace contaminants remaining in the syngas downstream acid gas removal section. Severe syngas specifications regarding its purity are required. For these reasons, synthesis gas purification constitutes a major challenge for the development of B-XTL processes.

Axens Solutions provides a complete Catalysts and Adsorbents range of products that are specially optimized for the desulfurization, drying and elimination of trace contaminants present in the feedstock. On another hand, Heurtey Petrochem Solutions provides a comprehensive range of unique and tailor-made furnaces for hydrogen or syngas production units (steam reforming), ammonia and methanol production units.