Selection of gasification technology

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Selection of gasification technology: Currently, the more advanced large-scale coal gasification technologies include Texaco water-coal slurry gasification, Shell pressurized coal gasification, and Lurgi fixed-bed pressurized gasification. Comparison Table of Major Overseas Gasification Technologies Item Texaco Shell Lurgi (traditional) Gasification pressure 3.0–6.5 2.0–4.0 3.0 Gasification temperature, °C 1300–1400 1400–1600 850 Maximum capacity per furnace, tons of coal/day 500–2000 2000 600 Type of gasifier Hot-wall, single nozzle; Cold-wall, four nozzles; Hot-wall furnace Coal feeding method Pumped coal slurry with concentration >60%; Coal powder transported using nitrogen; Particle size: 90% at 99, 90 Effective components (CO+H2) High >80% High >90% 68% Content of inert gases in the purified gas