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Catalytic upgrad for pyrolysis of food waste in a bubbling fluidized-bed reactor
Environmental Pollution ( IF 7.6 ) Pub Date : 2020-11-20 , DOI: 10.1016/j.envpol.2020.116023
Hoang Vu Ly , Quoc Khanh Tran , Seung-Soo Kim , Jinsoo Kim , Suk Soon Choi , Changho Oh

Biofuel production via pyrolysis has received increasing interest as a promising solution for utilization of now wasted food residue. In this study, the fast pyrolysis of mixed food waste (MFW) was performed in a bubbling fluidized-bed reactor. This was done under different operating conditions (reaction temperatures and carrier gas flow rate) that influence product distribution and bio-oil composition. The highest liquid yield (49.05 wt%) was observed at a pyrolysis temperature of 475 °C. It was also found that the quality of pyrolysis bio-oils (POs) could be improved using catalysts. The catalytic fast pyrolysis of MFW was studied to upgrade the pyrolysis vapor, using dolomite, red mud, and HZSM-5. The higher heating values (HHVs) of the catalytic pyrolysis bio-oils (CPOs) ranged between 30.47 and 35.69 MJ/kg, which are higher than the HHVs of non-catalytic pyrolysis bio-oils (27.69-31.58 MJ/kg). The major components of the bio-oils were fatty acids, N-containing compounds, and derivatives of phenol. The selectivity for bio-oil components varied depending on the catalysts. In the presence of the catalysts, the oxygen was removed from oxygenates via moisture, CO2, and CO. The CPOs contained aliphatic hydrocarbons, polycyclic aromatic compounds (such as naphthalene), pyridine derivatives, and light oxygenates (cyclic alkenes and ketones).



中文翻译:

鼓泡流化床反应器中用于食品垃圾热解的催化升级

通过热解生产生物燃料作为利用现在浪费的食物残渣的有前途的解决方案已引起越来越多的兴趣。在这项研究中,在鼓泡的流化床反应器中进行了混合食物垃圾(MFW)的快速热解。这是在影响产品分布和生物油成分的不同操作条件(反应温度和载气流速)下完成的。在475℃的热解温度下观察到最高的液体产率(49.05wt%)。还发现使用催化剂可以提高热解生物油的质量。研究了使用白云石,赤泥和HZSM-5对MFW进行催化快速热解以提高热解蒸气的能力。催化热解生物油(CPO)的较高热值(HHV)在30.47至35.69 MJ / kg之间,高于非催化热解生物油的HHV(27.69-31.58 MJ / kg)。生物油的主要成分是脂肪酸,含氮化合物和苯酚衍生物。生物油组分的选择性取决于催化剂。在催化剂存在下,通过水分,CO从含氧化合物中除去氧气2,和CO。纲要包含脂族烃,多环芳族化合物(如萘),吡啶衍生物,和轻质含氧(环烯烃和酮)。

更新日期:2020-11-20
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