Direct synthesis of LPG from syngas in a single-tube reactor

LÜ Yong-xing; XU Hai-yan; ZHOU Yi; CHEN Jian; WU Chuang-zhi

Volume 43 Issue 03

Mar. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(03): 331-337

LÜ Yong-xing, XU Hai-yan, ZHOU Yi, CHEN Jian, WU Chuang-zhi. Direct synthesis of LPG from syngas in a single-tube reactor[J]. Journal of Fuel Chemistry and Technology, 2015, 43(03): 331-337.

Citation:

LÜ Yong-xing, XU Hai-yan, ZHOU Yi, CHEN Jian, WU Chuang-zhi. Direct synthesis of LPG from syngas in a single-tube reactor[J]. Journal of Fuel Chemistry and Technology, 2015, 43(03): 331-337.

LÜ Yong-xing, XU Hai-yan, ZHOU Yi, CHEN Jian, WU Chuang-zhi. Direct synthesis of LPG from syngas in a single-tube reactor[J]. Journal of Fuel Chemistry and Technology, 2015, 43(03): 331-337.

Citation:

LÜ Yong-xing, XU Hai-yan, ZHOU Yi, CHEN Jian, WU Chuang-zhi. Direct synthesis of LPG from syngas in a single-tube reactor[J]. Journal of Fuel Chemistry and Technology, 2015, 43(03): 331-337.

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Direct synthesis of LPG from syngas in a single-tube reactor

1.
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Energy Research Institute Co., Ltd of Henan Academy of Sciences, Key Biomass Energy Lab of Henan Province, Zhengzhou 450008, China

Received Date: 2014-08-15
Publish Date: 2015-03-30

Abstract

Abstract

A hybrid catalyst for the direct synthesis of liquefied petroleum gas (LPG) from syngas was prepared through mechanical mixing of methanol synthesis catalyst with dehydration catalyst; its catalytic performance was tested in a single-tube reactor with a simulated biogas at 220~330 ℃, 1.2~5.1 MPa and a space velocity of 500~3 000 h^-1. The results indicated that the hybrid catalyst has a good activity; at 325 ℃, 2.1 MPa, and a space velocity of 1 500 h^-1, CO conversion and LPG content in the hydrocarbons product are 72.36% and 71.21%, respectively. At 325 ℃ and 2.1 MPa, a stable operation can be realized at a space velocity below 2 500 h^-1, whereas the temperature cannot be well controlled at a space velocity over 3 000 h^-1, which may lead to the catalyst deactivation. The NH₃-TPD, XRD, N₂ sorption and TPO characterization results suggest that the deposition of coke and decrease of the mount of strong acid sites and surface area are responsible for the catalyst deactivation.
- syngas,
- liquefied petroleum gas,
- hybrid catalyst,
- catalyst deactivation,
- coke deposition

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References(16)

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