Indexed by:Journal Papers

Date of Publication:2020-04-15

Journal:FUEL

Included Journals:EI、SCIE

Volume:266

ISSN No.:0016-2361

Key Words:Coal pyrolysis; Dry reforming; Low carbon alkane; Ni/La2O3; Tar

Abstract:Integrated coal pyrolysis with dry reforming of methane with addition of low carbon alkane provides an effective method for improving tar yield. One of the key issues is the development of catalysts for dry reforming of low carbon alkane (DRA). In this study, Ni/La2O3 was prepared by co-precipitation and used for DRA. A mixture of ethane and methane in molar ratio of 1:8 was reformed by CO2 and integrated with coal pyrolysis to improve tar yield. The result showed that tar yield under integrated process of coal pyrolysis with DRA over Ni/La2O3 at 600 degrees C is 1.18 times that under N-2. Ni/La2O3 shows less carbon deposition, and better performance than Ni/Al2O3, and the tar yield over Ni/La2O3 is 1.09 times that over Ni/Al2O3 at 600 degrees C. Less carbon deposition over Ni/La2O3 is mainly due to the formation of La2O2CO3 under dry reforming. The tar yield remains stable after the Ni/La(2)O(3 )was used for 6 times, indicating good regenerability of Ni/La2O3.