不同添加剂油茶壳炭粉成型性能与燃烧特性研究
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国家自然科学基金项目(51706040)、黑龙江省科学基金项目(QC2015049)、中国博士后科学基金项目(2016M601405)、黑龙江省博士后启动项目(LBH-Q17024)、黑龙江省高效创新人才项目(UNPYSCT-2017001)和黑龙江省留学归国项目


Molding Fuel and Combustion Characteristics of Biochar Prepared from Camellia oleifera Shell Pyrolysis
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    摘要:

    以油茶壳炭粉为原料,纤维素和氧化淀粉为添加剂,采用万能试验机研究成型温度、成型压力、原料含水率对燃料成型品质的影响。研究发现,成型温度在60~100℃时成型燃料的品质较好,提高成型温度对燃料的松弛密度影响不明显,但比能耗增加,对径向抗压强度影响与添加剂种类有关。提高成型压力,成型燃料的松弛密度、比能耗和径向抗压强度都随之增大,成型压力在6~8kN时成型燃料品质较好。提高原料含水率对降低能耗有显著作用,但原料含水率过大不利于成型,原料含水率在15%~20%时成型燃料品质较好。对成型燃料燃烧特性研究发现,纤维素和氧化淀粉的加入,着火温度能分别降低至362.5℃和324.5℃,添加氧化淀粉后燃料品质和燃烧特性最好;添加纤维素的混合成型燃料热值降低更少,且品质受成型因素影响较小。

    Abstract:

    Biomass carbonization forming technology is one of the main utilization technologies of biomass energy, which is of great significance to achieve the sustainable development of energy. The biochar prepared from Camellia oleifera shell pyrolysis as raw materials was molded by using universal testing machine, with cellulose and oxidized starch as additives. By analyzing the relax density, specific energy consumption and compressive strength of molding fuel, the effects of different conditions of molding on physical quality of molding fuel were made sure. The results showed that the fuel quality was the best at molding temperature of 60~100℃, molding pressure of 6~8kN, moisture content of 15%~20%. The combustion characteristics of the fuel were studied by thermogravimetric analysis. The results showed that the addition of cellulose and oxidized starch decreased the ignition temperature of Camellia oleifera shell carbon powder, the ignition temperature was decreased to 362.5℃ and 324.5℃, respectively. The combustion stability index and comprehensive combustion characteristic index of fuel with oxidized starch additive were better than those of pure carbon powder and cellulose additive fuel. But the heat value of cellulose added fuel was reduced even less. The significance of the research was to optimize the parameters of the molding process, provide theoretical basis for the preparation of biomass carbon molded fuel with excellent performance and convenient storage.

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秦丽元,张世慧,高忠志,罗立娜,蒋恩臣.不同添加剂油茶壳炭粉成型性能与燃烧特性研究[J].农业机械学报,2018,49(7):303-310.

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  • 收稿日期:2018-02-13
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  • 在线发布日期: 2018-07-10
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