I can’t access the full article because it’s protected, but here’s a concise overview based on established practice: Dry-feed entrained-flow gasification pneumatically injects dried, pulverized coal with oxygen and steam to make H2/CO syngas while ash vitrifies to slag. For high-ash coals (common in India/China), success hinges on managing ash fusion via fluxing/blending, robust slagging and refractory/cooling design, reliable dense-phase dry feeding (lock hoppers), and accepting higher oxygen demand. Benefits include high carbon conversion, good cold-gas efficiency, low water use versus slurry systems, and flexible outputs (power/IGCC, methanol, ammonia, SNG, hydrogen) with CCS compatibility. Challenges are variable ash chemistry, slag handling and erosion, feed-system plugging, and syngas-cooler fouling; plants weigh quench versus radiant cooling and hot versus cold gas cleanup. Commercial deployments include dry-feed systems historically from Shell (now marketed by Air Products) and Siemens-derived designs used in coal-to-chemicals projects handling higher-ash feedstocks.

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