Co-Pyrolysis of Lignite and Oil Plant Cake Blends

Document Type : Research Article


Firat University, Chemical Engineering Department, 23279, ELAZIĞ, TURKEY


Although today’s fossil fuel reserves have been still considered a long-term energy supply, biomass has received worldwide attention as a cheap and renewable energy source due to the known global environmental impact of fossil fuel usage. Then co-processing of fossil fuels and biomasses to produce substitute liquid fuels is one option to appraise fossil fuel reserves for
 the economy. In this work, pyrolysis of Soma lignite and an oil plant cake, and their blends of varied proportions in the form of pellets were studied to elucidate the main differences between the behavior of these materials and their blends during fast thermal decomposition carried to convert their valuable products. A special vertical heating chamber, which enabled very fast heating, was used in the experiments conducted at 500-700oC temperature range. The results showed that these two materials mutually interacted when the cake ratios of the pellets were below 50%. For blends with 75% cake, some interaction was observed only at 700oC. It is concluded that the interaction between two materials during pyrolysis is affected by the outflow rates of volatiles into the sweeping gas.
Maximum liquid yields corresponded to blends containing OPC greater than 75%.


Main Subjects

[1] Chen X., Liu L., Zhang L., Zhao Y., Qiu P., Ruan R., A Review on the Properties of Copyrolysis Char from Coal Blended with Biomass, Energ. Fuel., 34: 3996−4005(2020).
[2] Chen W-H.,  Lin  B-J., Lin Y-Y., Chu Y-S., Ubando A.T.,  Show P.L., Ong H.C., Jo-Chang S., Ho S-H., Culaba A.B., Pétrissans A., Pétrissans M., Progress in Biomass Torrefaction: Principles, Applications and Challenges, Prog. Energy Combust. Sci., 82: 100887 (2021).
[3] Guedes R.E., Luna A.S., Torres A.R., Operating Parameters for Bio-Oil Production in Biomass Pyrolysis:
A Review.
, J.Anal. Appl. Pyrol., 129: 134-149 (2018). 
[4] Li S., Chen X., Liu A., Wang L., Yu G., Study on Co-Pyrolysis Characteristics of Rice Straw and Shenfu Bituminous Coal Blends in a Fixed Bed Reactor, Bioresour. Technol.,155:252-257 (2014).
[5] Chen W-H., Peng J., Bi X.T., A State-of-the-Art Review of Biomass Torrefaction, Densification and Applications, Renew. Sust. Energ. Rev., 44:847-866 (2015).
[6] Lu Z.,  Chen X., Jiang Y., Li X.,  Chen, J., Li Y., Lu W., Lu J., Yao S., Application of Laser Induced Breakdown Spectroscopy for Direct and Quick Determination of Fuel Property of Woody Biomass Pellets, Renew. Energ.,164:1204-1214 (2021).
[7] Ghiasi B., Kumar L., Furubayashi T., Lim C.J., Bi X.T., Kim C.S., Sokhansanj S., Densifiedbiocoal from Woodchips: Is it Better to Do Torrefaction Before or after Densification?, App. lEnerg., 134: 133–142 (2014).
[8] Singh R.K., Trilok Patil T., Pandey D., Tekade S.P., Sawarkar A.N., Co-Pyrolysis of Petroleum Coke and Banana Leaves Biomass: Kinetics, Reaction Mechanism, and Thermodynamic Analysis, J.Environ. Manage., 301:113854 (2022). 
[9] Thibanyane N., Agachi P., Danha G.,  Effects of Biomass/Coal Copyrolysis Parameters on the Product Yield: A Review, Procedia Manuf., 35: 477-487  (2019).
[10] Li S.D., Li J.Z., XuJ., Investigating the Release Behavior Of Biomass and Coal During the Co-Pyrolysis Process, Int. J.Hydrogen Energy., 46: 34652-34662 (2021).
[11] Li J., Zhu J., Hu H., Jin L., Wang D., Wang G., Co-pyrolysis of Baiyinhua Lignite and Pine in an Infrared-Heated Fixed Bed to Improve Tar Yield, Fuel, 272:117739 (2020).
[13] Aboyade A.O., Carrier M., Meyer E.L., Knoetze H., Görgens J.F., Slow and Pressurized Co-Pyrolysis of Coal and Agricultural ResiduesEnergy Convers. Manage., 65: 198–207(2013).
[14] Abnisa F., Wan Daud W.M.A., A Review on Co-Pyrolysis of Biomass: An Optional Technique to Obtain a High-Grade Pyrolysis Oil, Energy Convers.  Manage., 87: 71–85 (2014).
[15] Zhang Y., Fan L., Liu S., Zhou N., Ding K., Peng P., Anderson E., Addy M., Heng Y., Liu Y., Li B., Snyder J., Chen P., Ruan R., Microwave-Assisted Co-Pyrolysis of Brown Coal and Corn Stover for Oil Production, Bioresour. Technol., 259: 461-464 (2018).
[17] Chen X., Liu L., Zhang L., Zhuo Y., Xie P., Chen G., Pei J., Thermogravimetric Analysis and Kinetics of the Co-Pyrolysis of Coal Blends with Corn Stalks, Thermochim. Acta., 659: 59-65 (2018).
[21] Merdun H., Laougé B. Z., Kinetic and Thermodynamic Analyses During Co-Pyrolysis of Green House Wastes and Coal by TGA. Renew.  Energ., 163: 453-464 (2021).
[22] Zhang C., Li S., Ouyang  S., Tsang C-W., Xiong D., Yang K., Zhou Y., Xiao Y., Co-Pyrolysis Characteristics of camellia oleifera Shell and Coal in a TGA and a Fixed-Bed Reactor, J.Anal. Appl. Pyrol., 155:105035 (2021).
[23] Chen J., Fan X., Jiang B., Mu L., Yao P., Yin H., Song X., Pyrolysis of oil-plant wastes in a TGA and a fixed-Bed Reactor: Thermochemical Behaviors, Kinetics, and Products Characterization, Bioresour. Technol. 192:592-602 (2015).
[24] Quan C., Xu S., An Y., Liu X., Co-pyrolysis of Biomass and Coal Blend by TG and in a Free Fall Reactor, J. Therm. Anal. Calorim., 117:817–823(2014).
[25] Yilgin M., Yildirim S., Pehlivan D., Combustion of Hazelnutshell-Lignite Blends in Poly-Particulate beds, Biomass Conv. Bioref., [in press]. 
[26] Saikia M., Ali A.A., Borah, R.C., Bezbarua M.S., Saikia B.K.,  Saikia N., Effects of Biomass Types on the Co-Pyrolysis Behaviour of a Subbituminous High-Sulphur Coal, Energ. Ecol. Environ., 3:251–265 (2018).
[27] Guo M., Bi J.C., Characteristics and Application of Co-Pyrolysis of Coal/Biomass Blends with Solid Heat Carrier. Fuel Proces. Tech., 138:743–749 (2015).
[28] Abnisa F., Arami-Niya, A., Wan Daud W.M.A., Sahu J.N., Characterization of Bio-Oil and Bio-Char from Pyrolysis of Palm Oil Wastes, Bioenerg. Res., 6:830–840 (2013).