Preparing Mn-CoO-supported pyrolysis coke catalyst with plasma and its application in the SCO denitration process

• Autorzy: Lei Z. , Jihao C. , Zhang L. , Xiangling S. , Yonghui L. , Min F.
• Języki publikacji: EN

Abstrakty

EN

In order to reduce nitrogen oxides in the flue gas and improve the quality of the atmosphere, an Mn-CoO-supported pyrolysis coke catalyst was prepared using equivalent-volume impregnation, and then its denitration efficiency was studied in a simulated flue gas denitrification device in the paper. The composition of the flue gas was a mixture of N₂, O₂, NO, and SO₂. Good denitration catalysts were prepared by changing plasma modification time and modified power, MnO load and Mn-CoO load. The denitration mechanism of the catalyst was analyzed by XRD, BET and SEM. The results are: optimal modified power in the plasma system was 60W, and the best modified time in plasma system was 3min; after being modified by plasma, the denitration efficiency of catalysts were significantly higher than conventional calcination catalyst; among catalysts with different CoO loadings (5%, 8%, 10%), 8% CoO loading had the best denitration efficiency, the best denitration efficiency reached 98% and time of higher denitration efficiency had also been extended a lot; Mn-CoO-supported catalysts had a certain SO₂-resistance, and the denitration efficiency of Mn-CoO-supported catalyst > MnO/supported catalyst > un-supported catalyst.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2019
• Tom: 28
• Numer: 5
• Opis fizyczny: p.3323-3332,fig.,ref.

Twórcy

autor

Lei Z.

• School of Geology and Environment, Xi’an University of Science and Technology, Xi’an, China

autor

Jihao C.

• School of Geology and Environment, Xi’an University of Science and Technology, Xi’an, China

autor

Zhang L.

• China National Heavy Machinery Research Institute Co. Ltd, Xi’an, China

autor

Xiangling S.

• Shandong Baichuan Tongchuang Energy Co. Ltd, Jinan, China

autor

Yonghui L.

• China National Heavy Machinery Research Institute Co. Ltd, Xi’an, China

autor

Min F.

• School of Geology and Environment, Xi’an University of Science and Technology, Xi’an, China

Bibliografia

• 1. SHI Y.L., CUI S.H., XU S., et al. Nitrogen oxide emission in energy consumption in China from a consumption-based perspective. Acta Scientiae Circumstantiae, 34 (10), 2684, 2014.
• 2. GAO F.Y., TANG X.L., YI H.H., ZHAO S.Z., WANG J.E., SHI Y.R., MENG X.M. Novel Co-or Ni-Mn binary oxide catalysts with hydroxyl groups for NH₃-SCR of NOx at low temperature. Applied Surface Science, 443 (15), 103, 2018.
• 3. YAO X.J., MA K.L., ZOU W.X., HE S.G., AN J.B., YANG F.M., DONG L. Influence of preparation methods on the physicochemical properties and catalytic performance of MnOx-CeO₂ catalysts for NH₃-SCR at low temperature. Chinese Journal of Catalysis, 38 (01), 146, 2017.
• 4. FENG Q.W., ZHANG Y., WANG F.G., ZHU Y. Analysis on Operating Status of SCR Facilities in Active Coal-Fired Units. Electric Power, 50 (04), 157, 2017.
• 5. CHENG J.N., ZHANG X.L., YANG B.J., WU X.P., ZHANG H.J., ZHANG L.F. Preparation and NO catalytic oxidation activity of Mn /ZrO₂ catalyst. Acta Scientiae Circumstantiae, 34 (3), 620, 2014.
• 6. BI B.K., WANG X.M. New Desulfurization Process of DXY Selective Catalytic Oxidation. Chemical Fertilizer Industry, 43 (01), 41, 2016.
• 7. HU J.L., TANG X.L., YI H.H., LI K., SUN X. Recent Progress in Selective Catalytic Oxidation of Ammonia. Chemical World, 55 (05), 297, 2014.
• 8. YANG J.Q., MEI Y., WANG C., LONG G.H., LI S. Current status and trends on wet flue gas denitration technology. Chemical Industry and Engineering Progress, 36 (02), 695, 2017.
• 9. LIU L., ZHANG Y., XUE L., CHENG Y. Selective catalytic reduction of NO with NH₃ over Mn/USY catalysts at low temperature. Chinese Journal of Environmental Engineering, 11 (07), 4112, 2017.
• 10. HAJNAJAFI M., KHORSHIDI A., GILANI A.G., HEIDRI B. Catalytic degradation of malachite green in aqueous solution by porous manganese oxide octahedral molecular sieve (OMS-2) nanorods. Research on Chemical Intermediates, 44 (5), 3313, 2018.
• 11. YUE D.T., QIAN X.F., KAN M., FANG M.Y., JIA J.P., YANG X.D., ZHAO Y.X. A metal-free visible light active photo-electro-Fenton-like cell for organic pollutants degradation. Applied Catalysis B-Environmental, 229, 211, 2018.
• 12. LEE C.T., CHEN W.S., LEE H.Y. Quadruple Gate-Embedded T Structured GaN-Based Metal-Oxide-Semiconductor High-Electron Mobility Transistors. IEEE Journal of the Electron Devices Society, 6 (01), 63, 2018.
• 13. TASBIHI M., ACHARJYA A., THOMAS A., RELI M., AMBROZOVA N., KOCI K., SCHOMACKER R. Photocatalytic CO₂ Reduction by Mesoporous Polymeric Carbon Nitride Photocatalysts. Journal of Nanoscience and Nanotechnology, 18 (8), 5636, 2018.
• 14. ZHAO T.W., YAO M.Y., FU K.L., CHENG G.G., YANG S., LI Y., CAI M. Review of study on catalysts for selective catalytic oxidation of NO in flue gas. Thermal Power Generation, 46 (04), 1, 2017.
• 15. ZHANG L., CHEN J.H., ZHANG L., LI Y.H., HE H., MA Z.H. Preparation of hydrogen-rich gas by heavy tar cracking with pyrolysis coke catalyst modified by plasma. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 39 (15), 1647, 2017.
• 16. ZHANG L., LIU X., ZHANG L. Study on Desulfurization Performance of Modified Pyrolysis Char Loaded Catalyst. Coal Technology, 11 (35), 305, 2016.
• 17. LIANG X.Y., CHI J.J., YANG Z. The influence of the functional group on activated carbon for, acetone adsorption property by molecular simulation study. Microporous and Mesoporous Materials, 262, 77, 2018.
• 18. YANG Y.L., XU D.Y., CHAO C.Y., GAO M. Research advance review on supported Mn-based catalysts at low-temperature selective catalytic reduction of NOx with NH₃. Chemical Industry and Engineering Progress, 35 (04), 1094, 2016.
• 19. CHEN L., ZENG C., GUO X., MAO Y., ZHANG Y., ZHANG X., LI W., LONG Y., ZHU H. Gas evolution kinetics of two coal samples during rapid pyrolysis. Fuel processing technology, 91 (8), 848, 2010.
• 20. ZHANG L., JIA Y., ZHANG L., HE H.B., YANG C., LUO M., MIAO L.T. Preparation of soybean oil factory sludge catalyst by plasma and the kinetics of selective catalytic oxidation denitrification reaction. Journal of Cleaner Production, 217, 317, 2019.

Identyfikatory

DOI

10.15244/pjoes/94287