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使用自制NiO/CaO添加剂在TGA上进行了吸碳实验、在单床和双床系统上进行了生物质气化实验。添加剂吸碳/脱碳循环性能实验结果表明,在天然石灰石上添加氧化镍强化了单位氧化钙吸碳容量,添加质量分数2%氧化镍获得最高吸碳容量(0.47 g-CO_2/g-CaO),较天然石灰石有较大提升。经过14次循环后,添加剂都出现了程度不同的烧结,引起了吸收容量的下降。气化实验表明,双床系统更利于使用添加剂来强化生物质气化,获得高氢气产率和较低的二氧化碳量。添加质量分数2%氧化镍的样品获得最大氢气产率265 mL/g生物质,相比天然石灰石提高了14%,相比单床系统提高了33%,继续增加镍含量影响不大。
Carbon adsorption experiments were performed on TGA using homemade NiO / CaO additives, and biomass gasification experiments were performed on single-bed and twin-bed systems. Adsorption / desorption cycle performance of additivesThe experimental results show that the addition of nickel oxide to natural limestone strengthens the unit capacity of calcium oxide absorption, and the highest carbon absorption capacity (0.47 g-CO 2 / g-CaO) is obtained by adding 2% , A greater improvement than natural limestone. After 14 cycles, the additives appeared to different degrees of sintering, causing a decrease in absorption capacity. Gasification experiments show that the two-bed system is more conducive to the use of additives to enhance biomass gasification, high hydrogen yield and lower carbon dioxide. The maximum hydrogen yield of 265 mL / g biomass was obtained for samples with 2% nickel oxide addition, which was 14% higher than that of natural limestone and 33% higher than that of single-bed system. The effect of increasing nickel content was insignificant.