Study on regeneration characteristics and dust deposition mechanism of nickel based tar-cracking catalyst

LIANG Peng; ZHANG Ya-qing; WEI Ai-fang; Wang Xiao-hang; WU Jia-feng

Volume 42 Issue 08

Aug. 2014

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(08): 945-951

LIANG Peng, ZHANG Ya-qing, WEI Ai-fang, Wang Xiao-hang, WU Jia-feng. Study on regeneration characteristics and dust deposition mechanism of nickel based tar-cracking catalyst[J]. Journal of Fuel Chemistry and Technology, 2014, 42(08): 945-951.

Citation:

LIANG Peng, ZHANG Ya-qing, WEI Ai-fang, Wang Xiao-hang, WU Jia-feng. Study on regeneration characteristics and dust deposition mechanism of nickel based tar-cracking catalyst[J]. Journal of Fuel Chemistry and Technology, 2014, 42(08): 945-951.

Citation:

LIANG Peng, ZHANG Ya-qing, WEI Ai-fang, Wang Xiao-hang, WU Jia-feng. Study on regeneration characteristics and dust deposition mechanism of nickel based tar-cracking catalyst[J]. Journal of Fuel Chemistry and Technology, 2014, 42(08): 945-951.

PDF( 3141 KB)

Study on regeneration characteristics and dust deposition mechanism of nickel based tar-cracking catalyst

Shandong University of Science and Technology, College of Chemical and Environmental Engineering, Qingdao 266590, China

Received Date: 2014-02-12
Rev Recd Date: 2014-04-18
Publish Date: 2014-08-30

Abstract

Abstract

The catalysis and in-situ regeneration of 1.0%NiO/0.1%MgO-Al₂O₃ catalyst were investigated in an atmospheric fixed bed reactor, in which the dust was also introduced in the feed to simulate the real dust environment of coal and biomass pyrolysis. The results show that the catalyst has a higher activity but a shorter life as the reaction temperature increases. Cycle regeneration of the catalyst exhibits a good durability, while a significant hydrothermal deactivation phenomenon happens at the regeneration temperature of 800 ℃. As a result, the preferable regeneration temperature range of 600~700 ℃ and regeneration time of 20 min are determined. The increased ratio of air/steam will gradually change the specific surface area and pore structure of the catalyst. EPMA and XRD results show that the introduction of dust does not change the composition of catalyst except the introduction of MgO that will be converted to a new phase of (Mg_0.4Al_0.6)Al_1.8O₄. MgO plays a positive anti-carbon deposition role, while SiO₂ is reverse. The negative effect of SiO₂ on the activity of catalyst can be reduced by a lower operating gas velocity.
- dust,
- tar cracking,
- nickel based catalyst,
- regeneration,
- carbon deposition

FullText(HTML)

References(14)

References

BAUMHAKL C, KARELLAS S. Tar analysis from biomass gasification by means of online fluorescence spectroscopy[J]. Opt Laser Eng, 2011, 49(7): 885-891.

张晓东, 周劲松, 骆仲泱, 陈花, 孙立. 催化裂化生物质焦油构成变化[J]. 燃料化学学报, 2005, 33(5): 582-585. (ZHANG Xiao-dong, ZHOU Jin-song, LUO Zhong-yang, CHEN Hua, SUN Li. Constitution variation of tar from catalytic cracking of biomass[J]. Journal of Fuel Chemistry and Technology, 2005, 33(5): 582-585.)

EL-RUB Z A, BRAMER E A, BREM G. Review of catalysts for tar elimination in biomass gasification[J]. Ind Eng Chem Res. 2004, 43(22): 6911-6919.

杨骏, 陈满英, 任杰. Mo、W对Ni/Al₂O₃催化剂加氢脱氧性能的影响[J]. 化工进展, 2005, 24(12): 1386-1389. (YANG Jun, CHEN Man-ying, REN Jie. Effect of Mo, W addition on performance of Ni/Al₂O₃ catalyst for hydrodeoxygenation[J]. Chemical Industry and Engineering Process, 2005, 24(12): 1386-1389.)

王雪峰, 王锋, 陈满英, 任杰. Ni基双金属催化剂加氢脱氧性能的研究[J]. 燃料化学学报, 2005, 33(5): 612-616. (WANG Xue-feng, WANG Feng, CHEN Man-ying, REN Jie. Studies on nickel-based bimetallic catalysts for hydrodeoxygenation[J]. Journal of Fuel Chemistry and Technology, 2005, 33(5): 612-616.)

王欣, 张舜光, 侯凯湖, 非负载Ni(Co)-Mo-Al₂O₃纳米催化剂的制备及其生物油模型化合物加氢脱氧性能研究[J]. 分子催化, 2010, 24(2): 153-157. (WANG Xin, ZHANG Shun-guang, HOU Kai-hu. Preparation and hydrodeoxygenation performance of unsupported Ni(Co)-Mo-Al₂O₃ Nano-catalysts[J]. Journal of Molecular Catalysis, 2010, 24(2): 153-157.)

SATO K, FUJIMOTO K, Development of new nickel based catalyst for tar reforming with superior resistance to sulfur poisoning and coking in biomass gasification[J]. Catal Commun, 2007, 8(11): 1697-1701.

杨占林, 唐兆吉, 姜虹, 王继锋. 加氢裂化预处理催化剂复活研究[J]. 石油炼制与化工, 2012, 43(6): 58-61. (YANG Zhan-lin, TANG Zhao-ji, JIANG Hong, WANG Ji-feng. Study on the reactivation or hydrocracking pretreating catalyst[J]. Petroleum Processing and Petrochemicals, 2012, 43(6): 58-61.)

TRIMM D L. The regeneration or disposal of deactivated heterogeneous catalysts[J]. Appl Catal A: General, 2001, 212(1-2): 153-160.

AL-FATESH A S A, IBRAHIM A A, FAKEEHA A H, ABASAEEDA A E, SIDDIQUIB M R H. Oxidative CO₂ reforming of CH₄ over Ni/α-Al₂O₃ catalyst[J]. J Ind Eng Chem, 2011, 17(3): 479-483.

ALENAZEY F, COOPER G G, DAVE C B, ELNASHAIE S S E H, SUSU A A, ADESINA A A. Coke removal from deactivated Co-Ni steam reforming catalyst using different gasifying agents: An analysis of the gas-solid reaction kinetics[J]. Catal Commun, 2009, 10(4): 406-411.

FURUSAWA T, MIURA Y, KORI Y, SATO M, SUZUKI N. The cycle usage test of Ni/MgO catalyst for the steam reforming of naphthalene/benzene as model tar compounds of biomass gasification[J]. Catal Commun, 2009, 10(5): 552-556.

Yue B H, Zhou R X, Zheng X M, Lu W C. Promotional effect of Ca on the Pd/Ce-Zr/Al₂O₃ catalyst for low-temperature catalytic combustion of methane[J]. Fuel Process Technol, 2008, 89(8): 728-735.

BARTHOLOMEW C H, PANNELL R B, FOWLER R W. Sintering of alumina-supported nickel and nickel bimetallic methanation catalysts in H₂/H₂O atmospheres[J]. J Catal, 1983, 79(1): 34-46.

Relative Articles

Supplements(0)

Cited By

Proportional views