Enhanced formation of α-olefins by the pulse process between Fischer-Tropsch synthesis and N<sub>2</sub> purging

SHI He-xiang; LI Zhi-kai; LIU Ke-feng; XIAO Hai-cheng; KONG Fan-hua; ZHANG Juan; CHEN Jian-gang

Volume 44 Issue 7

Jul. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(7): 822-829

SHI He-xiang, LI Zhi-kai, LIU Ke-feng, XIAO Hai-cheng, KONG Fan-hua, ZHANG Juan, CHEN Jian-gang. Enhanced formation of α-olefins by the pulse process between Fischer-Tropsch synthesis and N2 purging[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 822-829.

Citation:

SHI He-xiang, LI Zhi-kai, LIU Ke-feng, XIAO Hai-cheng, KONG Fan-hua, ZHANG Juan, CHEN Jian-gang. Enhanced formation of α-olefins by the pulse process between Fischer-Tropsch synthesis and N₂ purging[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 822-829.

Citation:

SHI He-xiang, LI Zhi-kai, LIU Ke-feng, XIAO Hai-cheng, KONG Fan-hua, ZHANG Juan, CHEN Jian-gang. Enhanced formation of α-olefins by the pulse process between Fischer-Tropsch synthesis and N₂ purging[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 822-829.

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Enhanced formation of α-olefins by the pulse process between Fischer-Tropsch synthesis and N₂ purging

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Petrochemical Research Institute of Petro China Company Limited, Beijing 100029, China

Funds:

The project was supported by the National Natural Science Foundation of China 21373254

The project was supported by the National Natural Science Foundation of China 21503256

PetroChina PRIKY14006

PetroChina PRIKY15038

PetroChina PRIKY15039

PetroChina PRIKY15042

More Information

Corresponding author: CHEN Jian-gang, Tel: +86 0351-4040290, E-mail: chenjg@sxicc.ac.cn
Received Date: 2016-03-03
Rev Recd Date: 2016-04-06

Available Online: 2021-01-23

Publish Date: 2016-07-10

Abstract

Abstract

The Fischer-Tropsch synthesis has offered an alternative way to convert coal and biomass into chemicals such as α-olefins via sygas comprised of H₂ and CO. A pulse process switching between Fischer-Tropsch synthesis and N₂ purging was carried out when the Fischer-Tropsch synthesis became stable in the fixed bed reactor. The activity and selectivity over Fe-Co catalyst for α-olefins in Fischer-Tropsch synthesis reaction were measured under the normal conditions of 2.0 MPa, 497 K, 2 000 h^-1 and H₂/CO volume ratio of 2.0. It was found that the olefin to paraffin ratio of C₃ for Fe-Co catalyst purged at 517 K and 0.2 MPa was almost nine times higher than that of the fresh one without purging under the same reaction conditions, and the CH₄ selectivity and CO conversion decreased after purging. Two possible reasons were proposed to explain these phenomena. Moreover, a batch experiment by the pulse process in fixed bed reactor was performed. Notably, a high olefins yield was obtained via the pulse process during the Fischer-Tropsch synthesis.
- alpha olefins,
- pulse process,
- N₂ purging,
- Fischer-Tropsch synthesis

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References(41)

References

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