碳酸盐中CO2气化生物质制合成气  

SYNGAS PRODUCTION FROM CO GASIFICATION BIOMASS IN CARBONATE SALTS

作　　者：姬登祥 金科 黄加艳 韦一 聂勇 计建炳 Ji Dengxiang;Jin Ke;Huang Jiayan;Wei Yi;Nie Yong;Ji Jianbing(College of Chemical Engineering,Zhejiang University of Technology,Zhejiang Province Key Laboratory of Biofuel,Biodiesel Laboratory of China Petroleum and Chemical Industry Federation,Hangzhou 310014,China)

机构地区：[1]浙江工业大学化学工程学院,浙江省生物燃'料利用技术研究重点实验室,石油和化工行业生物柴油技术工程实验室,杭州310014

出　　处：《太阳能学报》2021年第1期360-364,共5页Acta Energiae Solaris Sinica

基　　金：浙江省自然科学基金青年基金(2018B060006);浙江省海洋经济创新发展区域示范成果转化及产业化项目(2015-83)。

摘　　要：以杉木屑为原料,CO_(2)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CO_(2)流量、CO_(2)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:CO_(2)流量显著影响气化反应的平衡;以鼓泡法通入CO_(2)时生物质的气化效果优于吹扫法的情况,CO_(2)流量为99.8 L/h时气化效果较好,合成气含量和产率分别达到61.4%和350.2 mL/g生物质;添加的金属氧化物中Cr_(2)O_(3)对生物质气化过程的促进作用优于MgO和Fe_(2)O_(3),随着Cr_(2)O_(3)含量的增大,合成气含量先增大后略微减小,在Cr_(2)O_(3)含量为10.0%时最高,为67.9%。Gasification of fir sawdust using CO_(2) 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 CO_(2) flow,CO_(2) 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 CO_(2) 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 CO_(2) 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 Fe_(2)O_(3). With the increase of Cr_(2)O_(3) content,the syngas content first increases and then slightly decreases,and the maximum of syngas content is obtained at the Cr_(2)O_(3) content of 10.0%,which is 67.9%.

关 键 词：生物质 气化 合成气 碳酸盐 CO_(2) 

分 类 号：TK6[动力工程及工程热物理—生物能]