碳酸盐中CO2气化生物质制合成气

以杉木屑为原料,CO2为气化剂,熔融碳酸盐Li2CO3-Na2CO3-K2CO3(LNK)为热介质和催化剂进行气化制合成气(H2+CO)的研究,考察气化剂CO2流量、CO2通入方式、复合熔盐体系中添加的金属氧化物种类和Cr2O3含量等因素对气体产物组成分布及产率的影响.结果表明:CO2流量显著影响气化反应的平衡;以鼓泡...

SYNGAS PRODUCTION FROM CO GASIFICATION BIOMASS IN CARBONATE SALTS

Gasification of fir sawdust using CO₂ as gasifying agent to produce syngas(H2+CO)was performed in molten carbonate salts Li2CO3-Na2CO3-K2CO3(LNK)which was adopted as gasification medium and catalyst,and the effects of operating parameters such as CO₂ flow,CO₂ access method,kinds of metal oxides added and the additive Cr2O3 content in composite molten salts system on the distribution and yield of gas composition were investigated. The results show that CO₂ flow significantly affects the equilibrium of gasification reactions. The gasification effect of bubbling method is superior to that of sweeping method. The better gasification effect is achieved when the CO₂ flow is 99.8 L/h with bubbling method,and the content and yield of syngas reach 61.4% and 350.2 mL/g biomass,respectively. Among the added metal oxides,the promotion effect of Cr2O3 on biomass gasification is superior to that of MgO and Fe₂O₃. With the increase of Cr₂O₃ content,the syngas content first increases and then slightly decreases,and the maximum of syngas content is obtained at the Cr₂O₃ content of 10.0%,which is 67.9%.