Abstract Natural catalysts (dolomite and olivine) not only reduce the tar content, they also have a high potential to enhance hydrogen production during gasification process. In this study, a bubbling fluidized bed (BFB) was used to evaluate the effect of the operating parameters on co-gasification of pine sawdust and brown coal namely gasification temperature (Tg) in the range of 700–1000 °C, fuel particle size (dp) in the range of 2.0–3.5 mm, steam/fuel ratio (S/F) in the range of 0.5–0.8, equivalence ratio (ER) in the range of 0.1–0.4, biomass ratio (BR) in the range of 0.0–100%, and catalyst loading in the range of 3.0–12.0 wt%. With increase in catalyst loading from 3.0 to 12.0 (wt %), the hydrogen yield was increased from 52.9 to 55.5 (g/kg-fuel) for dolomite and from 47.5 to 52.1 (g/kg-fuel) for olivine, while the tar yield sharply decreased from 5.4 to 0.4 (g/Nm3) and from 7.0 to 0.8 (g/Nm3), respectively. Fuel particle size showed a negligible influence on the upgrading of hydrogen production and tar yield.

中文翻译：

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使用白云石和橄榄石作为催化剂的煤和生物质混合物的共气化

摘要 天然催化剂（白云石和橄榄石）不仅可以降低焦油含量，而且在气化过程中具有提高氢气产量的潜力。在本研究中，鼓泡流化床 (BFB) 用于评估操作参数对松木屑和褐煤共气化的影响，即气化温度 (Tg) 在 700-1000 °C 范围内，燃料粒径(dp) 在 2.0–3.5 mm 范围内，蒸汽/燃料比 (S/F) 在 0.5–0.8 范围内，当量比 (ER) 在 0.1–0.4 范围内，生物质比 (BR) 在范围内0.0–100%，催化剂负载量在 3.0–12.0 wt% 范围内。随着催化剂负载量从 3.0 增加到 12.0 (wt %)，白云石的氢产率从 52.9 增加到 55.5 (g/kg-燃料)，橄榄石的氢产率从 47.5 增加到 52.1 (g/kg-燃料)，而焦油产量分别从 5.4 急剧下降到 0.4 (g/Nm3) 和从 7.0 急剧下降到 0.8 (g/Nm3)。燃料粒径对氢气产量和焦油产量的升级影响可以忽略不计。