OPTIMIZATION OF TECHNOLOGICAL PARAMETERS OF MIXED FUEL OF CORN STOVER CHARCOAL AND Pinus tabulaeformis BASED ON DESIRABILITY FUNCTION METHOD

Qian Xiaoliang; Zhang Jing; Zheng Decong; Zhang Xiuquan

doi:10.19912/j.0254-0096.tynxb.2021-1373

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 216-224. DOI: 10.19912/j.0254-0096.tynxb.2021-1373

OPTIMIZATION OF TECHNOLOGICAL PARAMETERS OF MIXED FUEL OF CORN STOVER CHARCOAL AND Pinus tabulaeformis BASED ON DESIRABILITY FUNCTION METHOD

Qian Xiaoliang, Zhang Jing, Zheng Decong, Zhang Xiuquan

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Abstract

Aming at the serious shorcoming of slagging in burning corn straw, corn stover were carbonized and mixed with Pinus tabulaeformis wastes to make an environment-friendly biochar mixed fuel. Firstly, the influences of molding process parameters to the density, durability and shatter resistance of mixed fuel were researched based on the response surface methodology, including water content, molding temperature and pressure, and the ratio of corn stover charcoal to Pinus tabulaeformis mixed material. Then a three-response optimization of molding process parameters was carried out by using the craving function method and multi-population genetic algorithm. The results show that the density, durability and shatter resistance of biochar mixed fuel are directly proportional to temperature and pressure and inversely proportional to the content of corn stover charcoal, when the water content is 6%-12%. The density, durability and shatter resistance of the mixed fuel larger than 1.02 g/cm³, 94%, 97% with the water content of 6%-12%, temperature of 70-130 ℃, corn stover charcoal content of 10%-20% and pressure is 90-150 MPa respectively. At last, the optimum technological parameters are 8.986%, 124.272 ℃, 1:9 and 120 MPa, corresponding to the water content, temperature, the ratio of corn stover charcoal to Pinus tabulaeformis mixture and pressure. Under these conditions, the density, durability and shatter resistance of mixed fuel are 1.153 g/cm³, 98.823% and 99.573% respectively, and the errors between experimental results and predicted results are only 5.81, 0.04 and 0.73%.

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biomass energy / biochar / fuel / physical properties / optimization / desirability function

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Qian Xiaoliang, Zhang Jing, Zheng Decong, Zhang Xiuquan. OPTIMIZATION OF TECHNOLOGICAL PARAMETERS OF MIXED FUEL OF CORN STOVER CHARCOAL AND Pinus tabulaeformis BASED ON DESIRABILITY FUNCTION METHOD[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 216-224 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1373

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