Abstract Cattle manure with different moisture contents was carbonized under different temperatures to investigate the products distribution and cattle manure char’s properties. And the cattle manure char’s gasification performance was compared with cattle manure to explore the manure char’s gasification potential. Results showed that temperature and moisture content exerted a strong influence on products distribution and cattle manure char properties. Manure char yield decreased and gas yield increased with increasing temperature. Moisture content of 56.20% was favor to improve the gas yield, while moisture content of 85.12% promote the liquid yield. Carbon content in manure char decreased as the moisture content increased, and it increased as temperature increased. The product distribution and elemental analysis results indicated that the C in cattle manure was converted to gas phase at 56.20% moisture content and to liquid phase at 85.12% moisture content. Steam gasification results showed that syngas and hydrogen yields from manure char increased by 1.79 and 2.27 times, respectively, comparing with gasification of cattle manure. And weight loss of manure char (52.00%) was lower than that of cattle manure (83.70%). These indicated that using cattle manure char as gasification feedstock can enhance the reduction of tars in the product gas. In addition, the H2 concentration from manure char reached 59.22%. Therefore, the cattle manure char is a good feedstock for producing hydrogen.

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水分含量对牛粪炭特性的影响及其富氢气体生产潜力

摘要 将不同水分含量的牛粪在不同温度下进行炭化，研究其产物分布和牛粪炭的特性。并将牛粪炭的气化性能与牛粪进行比较，探讨粪炭的气化潜力。结果表明，温度和水分含量对产品分布和牛粪炭特性有很大影响。粪炭产率随温度升高而降低，产气量增加。56.20%的水分含量有利于提高产气率，而85.12%的水分含量有利于提高产液率。粪炭中的碳含量随着水分含量的增加而降低，随着温度的升高而增加。产品分布和元素分析结果表明，牛粪中的 C 在水分含量为 56.20% 时转化为气相，在水分含量为 85.12% 时转化为液相。蒸汽气化结果表明，与牛粪气化相比，粪炭的合成气和氢气产率分别增加了1.79和2.27倍。粪炭的失重(52.00%)低于牛粪(83.70%)。这些表明使用牛粪炭作为气化原料可以增强产品气中焦油的减少。此外，来自粪炭的 H2 浓度达到 59.22%。因此，牛粪炭是生产氢气的良好原料。蒸汽气化结果表明，与牛粪气化相比，粪炭的合成气和氢气产率分别增加了1.79和2.27倍。粪炭的失重(52.00%)低于牛粪(83.70%)。这些表明使用牛粪炭作为气化原料可以增强产品气中焦油的减少。此外，来自粪炭的 H2 浓度达到 59.22%。因此，牛粪炭是生产氢气的良好原料。蒸汽气化结果表明，与牛粪气化相比，粪炭的合成气和氢气产率分别增加了1.79和2.27倍。粪炭的失重(52.00%)低于牛粪(83.70%)。这些表明使用牛粪炭作为气化原料可以增强产品气中焦油的减少。此外，来自粪炭的 H2 浓度达到 59.22%。因此，牛粪炭是生产氢气的良好原料。这些表明使用牛粪炭作为气化原料可以增强产品气中焦油的减少。此外，来自粪炭的 H2 浓度达到 59.22%。因此，牛粪炭是生产氢气的良好原料。这些表明使用牛粪炭作为气化原料可以增强产品气中焦油的减少。此外，来自粪炭的 H2 浓度达到 59.22%。因此，牛粪炭是生产氢气的良好原料。