生物化学机械法制浆过程麦草废渣基棒状颗粒燃料的性能分析

Performance Analysis of Rod-shaped Granular Fuel Based on Wheat Straw Residue from Biochemical Mechanical Pulping Process

关键词:  麦草废渣  制浆废液  液压成形  颗粒燃料

Key Words:wheat straw residue  pulping waste liquid  hydraulic molding  granular fuel

摘要:为提高农业废弃物麦草全组分资源化利用效率，本研究将生物化学机械法制浆过程产生的麦草废渣和制浆废液进行混合，利用液压成形技术制备了麦草废渣基棒状颗粒燃料（简称颗粒燃料），探讨了麦渣粒径和废液添加量对颗粒燃料形貌、稳定性、物理性能和燃烧性能的影响。结果表明，颗粒燃料制备的较优工艺条件为：麦渣粒径范围[0.22，0.90） mm，制浆废液添加量36.31%。该条件下制备的颗粒燃料具有较好的稳定性、物理性能和燃烧性能，其松弛密度为1.50 g/cm³，抗跌碎性为99.94%，抗渗水性时间为105 min，横向抗压强度为75.1 MPa，径向抗压强度为1.53 MPa，热值为11 715 J/g，燃烧时间可达99 s。

Abstract:In order to improve the resource utilization efficiency of whole components of agricultural waste wheat straw， the waste residue of wheat straw and pulping waste liquid from the biochemical mechanical pulping process were mixed to prepare wheat residue based rod-shaped granular fuel （short for granular fuel） by hydraulic molding technology in this study. The effects of wheat residue size and waste liquid dosage on the morphology， stability， physical properties， and combustion performance of granular fuel were investigated. The results showed that the optimal preparing conditions of granular fuel were the wheat residue size range of ［0.22，0.90） mm and pulping waste liquid dosage of 36.31%. The prepared granular fuel at optimal preparing conditions had excellent stability， physical properties， and combustion performance， with the relaxation density of 1.50 g/cm³， the crushing resistance of 99.94%， the impermeability time of 105 min， the transverse compressive strength of 75.1 MPa， the radial compressive strength of 1.53 MPa， the caloric value of 11 715 J/g， and the combustion time of 99 s.