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Integrated coal pyrolysis with CO2 reforming of methane over Ni/MgO catalyst for improving tar yield by Jiahe Liu; Haoquan Hu; Lijun Jin; Pengfei Wang; Shengwei Zhu is a Engineering article available to read on EtoBox.

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## Coal pyrolysis CO 2 reforming of methane Tar yield Ni/MgO catalyst A new process to integrate coal pyrolysis with CO 2 reforming of methane over Ni/MgO catalyst was put forward for improving tar yield. And several Chinese coals were used to confirm the validity of the process. The experiments were performed in an atmospheric fixed-bed reactor containing upper catalyst layer and lower coal layer to investigate the effect of pyrolysis temperature, coal properties, Ni loading and reduction temperature of Ni/MgO catalysts on tar, water and char yields and CH 4 conversion at fixed conditions of 400 ml/min CH 4 flow rate, 1:1 CH 4 /CO 2 ratio, 30 min holding time. The results indicated that higher tar yield can be obtained in the pyrolysis of all four coals investigated when coal pyrolysis was integrated with CO 2 reforming of methane. For PS coal, the tar, water and char yield is 33.5, 25.8 and 69.5 wt.%, respectively and the CH 4 conversion is 16.8%, at the pyrolysis temperature of 750 °C over 10 wt.% Ni/MgO catalyst reduced at 850 °C. The tar yield is 1.6 and 1.8 times as that in coal pyrolysis under H 2 and N 2 , respectively.

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Author

Jiahe Liu; Haoquan Hu; Lijun Jin; Pengfei Wang; Shengwei Zhu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-3820)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)