Linde is one of the leading providers of partial oxidation (POx) plants world-wide, and its process concept covers all type of hydrocarbon feedstocks and resulting products. Linde’s outstanding expertise is backed by more than 30 years of experience and in being the only company worldwide that engineers, installs, and operates POx plants. One of the four POx plants operated by Linde is the world's largest natural gas-fed plant (200,000 Nm³/h H2+CO).
Synthesis gas ("syngas"), a gaseous mixture comprised mostly of H2 and CO, is produced by the steam reforming or partial oxidation of hydrocarbon feedstocks or a combination of both processes (tandem reforming). Syngas is utilized in the production of an array of chemicals and energy products including but not limited to methanol, ammonia, synthetic fuel (Fischer-Tropsch products), electricity, steel-making, synthetic natural gas (SNG), and hydrogen. The H2/CO ratio required for downstream product generation is adjustable with operational modifications and additional gas shift processes.
In general, gaseous and light oil hydrocarbon are converted into syngas using catalytic steam-reforming or partial oxidation. Heavier oil and solid feedstocks like refinery by-products (residual oil, asphaltene, and petroleum coke) and coal are converted into syngas through gasification reactions in a reducing environment. Generally, the oil/solid based syngas contains unwanted compounds such as hydrogen sulfide, cyanides, and ammonia. Downstream processes are used to remove the unwanted compounds and to adjust the H2/CO ratio to its desired amount. These water-gas-shift reactions, acid gas removal technologies like RECTISOL® or amine-based designs, pressure-swing-adsorption and membrane separation can all be employed as needed.