Gong Weijin, Zhou Zizheng, Liu Yue, Wang Qingyu, Guo Lina
School of Energy & Environmental Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China.
ACS Omega. 2020 Feb 14;5(7):3389-3396. doi: 10.1021/acsomega.9b03608. eCollection 2020 Feb 25.
In this work, the catalytic gasification of sewage sludge in supercritical water was investigated in a batch reactor (460 °C, 27 MPa, 6 min), and the separate and combined effects of the catalyst on the H production and phosphorus yield were investigated. The experimental results indicated that KCO alone improved the H yield, gasification efficiency (GE), and carbon gasification efficiency (CE). The largest H yield of 54.28 mol/kg was achieved, which was approximately three times that without a catalyst. Furthermore, the inorganic phosphorus (IP) yield increased with the addition of KCO. However, when HO was added, the H yield quickly decreased with increasing HO coefficient, and more than 97.8% of organic phosphorus (OP) was converted into IP. The H yield increased with the addition of various KCO/HO ratios, whereas the IP yield decreased.
在本研究中，在间歇式反应器（460℃、27MPa、6分钟）中对污水污泥在超临界水中的催化气化进行了研究，并考察了催化剂对氢气生成和磷产率的单独及联合影响。实验结果表明，单独使用KCO可提高氢气产率、气化效率（GE）和碳气化效率（CE）。实现了最大氢气产率54.28mol/kg，约为无催化剂时的三倍。此外，随着KCO的添加，无机磷（IP）产率增加。然而，当添加HO时，氢气产率随HO系数的增加而迅速降低，且超过97.8%的有机磷（OP）转化为IP。随着不同KCO/HO比例的添加，氢气产率增加，而IP产率降低。
