The Zemag BGL slagging gasifier is a hybrid coal gasification technology combining fixed-bed gasification characteristics with entrained-flow slag discharge features, which key innovation resides in the gasification layer reaction temperature that can exceed coal ash fusion temperature, producing molten slag rather than dry ash.

The detailed description covers: technology ownership evolution, process thermodynamics, feedstock flexibility, slag management, equipment specifications, and environmental performance.

Key technology features
🔬 50+ years of proven technology: From British Gas/Lurgi origins to Shanghai Zemag Mingda's current ownership—complete technology transfer history documented
⚡ Superior performance metrics: 99⁺% carbon conversion, 87-92% cold gas efficiency, produces premium synthesis gas (CO: 58-67%, H₂: 25-35%)
♻️ Circular economy application: Coprocesses coal with biomass, MSW, or plastic waste—while reducing steam consumption 50% vs. conventional gasifiers
🌍 Recent innovation: CO₂ reduction-type variant now operational at Hebei Jiantao (Jan 2025), consuming 150,000 tonnes CO₂/year for chemical synthesis
📊 Industrial track record: 500K-1M+ tons/year ammonia/methanol facilities operating 13+ years continuously at China Coal Ordos Energy & Chemical Co., Ltd, with 284 days operating cycle and nr. 4 furnace achieving a record-breaking 364 days uninterrupted run

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