Conversion of sulfur-free black liquor into fuel gas by supercritical water gasification
-
Marion Huet
,
Anne Roubaud
Abstract
Supercritical water gasification of weak sulfur-free black liquor (BL) was performed in a batch autoclave at temperatures between 430°C and 470°C, pressure between 24 and 27 MPa and residence time between 2 and 63 min. Results show that the gas produced was a mixture of mainly hydrogen, methane, and carbon dioxide. Maximum conversion was achieved at 470°C and 60 min. Energy recovery (ER, ratio between the energy in the gas and in the initial BL) was 46%. Thirty-four percent of the carbon and 53% of the hydrogen initially present in BL were converted into gases. Nearly 15% of initial organic carbon remains in the liquid phase and consists mainly of phenolic compounds, which are stable under those conditions. A higher temperature is needed to convert all the organic carbon. Thermodynamic equilibrium should be reached at 700°C leading to a complete conversion and a better efficiency. Sodium recovery is close to typical kraft recovery value and compatible with causticizing.
Acknowledgments
Authors would like to thank Institut Carnot Energie du Futur for the funding of this study in the case of project ENERLIG, Capucine Dupont and Geert Haarlemmer for their external review and Julien Roussely for his technical support during experiments.
References
Adams, T.N. (1997) Kraft recovery boilers. AF&PA, Tappi Press, Atlanta, USA.Search in Google Scholar
Boucher, J., Chirat, C., Lachenal, D. (2014) Extraction of hemicelluloses from wood in a pulp biorefinery, and subsequent fermentation into ethanol. Energy Convers. and Manage. 88:1120–1126.10.1016/j.enconman.2014.05.104Search in Google Scholar
Cao, C., Guo, L., Chen, Y., Guo, S., Lu, Y. (2011) Hydrogen production from supercritical water gasification of alkaline wheat straw pulping black liquor continuous flow system. Int. J. Hydrogen Energ. 36:13528–13535.10.1016/j.ijhydene.2011.07.101Search in Google Scholar
Chirat, C., Lachenal, D., Sanglard, M. (2012) Extraction of xylans from hardwood chips prior to kraft cooking. Process Biochem. 47:381–385.10.1016/j.procbio.2011.12.024Search in Google Scholar
Feria, M.J., García, J.C., Díaz, M.J., Garrotec, G., López, F. (2012) Optimization the soda-AQ process for cellulose pulp production and energy content of black liquor from L. leucocephala K360. Bioresource Technol. 120:173–179.10.1016/j.biortech.2012.06.034Search in Google Scholar
Fiori, L., Valbusa, M., Castello, D. (2012) Supercritical water gasification of biomass for H2 production: Process design. Bioresource Technol. 121:139–147.10.1016/j.biortech.2012.06.116Search in Google Scholar
Flynn, B.L. (1976). Wet Air Oxidation for black liquor Recovery. Chem. Eng. Progr. 72:66–68.Search in Google Scholar
Huelsman, C.M., Savage, P.E. (2012) Intermediates and kinetics for phenol gasification in supercritical water. Phys. Chem. Chem. Phys. 14:2090–2910.10.1039/c2cp23910hSearch in Google Scholar
Kruse, A. (2009) Hydrothermal biomass gasification. J. Supercrit. Fluid. 49:391–399.10.1016/j.supflu.2008.10.009Search in Google Scholar
Kruse, A., Meier, D., Rimbrecht, P., Schacht, M. (2000) Gasification of pyrocatechol in supercritical water in the presence of potassium hydroxide. Ind. Eng. Chem. Res. 39: 4842–4848.10.1021/ie0001570Search in Google Scholar
Myréen, L., Rönnlund, I., Westerlund, T, (2011) Integration of supercritical water gasification (SCWG) in pulp and paper production – a feasibility study of integration options. Chem. Engin. Trans. 25:429–434.Search in Google Scholar
Naqvi, M., Yana, J., Fröling, M. (2010) Bio-refinery system of DME or CH4 production from black liquor gasification in pulp mills. Bioresource Technol. 101:937–944.10.1016/j.biortech.2009.08.086Search in Google Scholar
Peterson, A., Vogel, F., Lachance, R., Fröling, M., Antal, M., Tester, J. (2008) Thermochemical biofuel production in hydrothermal media: a review of sub- and supercritical water technologies. Energy Environ. Sci. 1:32–65.10.1039/b810100kSearch in Google Scholar
Resende, F.L.P., Savage, P.E. (2010) Kinetic model for noncatalytic supercritical water gasification of cellulose and lignin. AIChE J. 56:2412–2420.10.1002/aic.12165Search in Google Scholar
Sricharoenchaikul, V. (2009) Assessment of black liquor gasification in supercritical water. Bioresource Technol. 100:638–643.10.1016/j.biortech.2008.07.011Search in Google Scholar
Yoshida, Y., Dowaki, K., Matsumura, Y., Matsuhashi, R. (2003) Comprehensive comparison of efficiency and CO2 emissions between biomass energy conversion technologies – position of supercritical water gasification in biomass technologies. Biomass Bioenerg. 25:257–272.10.1016/S0961-9534(03)00016-3Search in Google Scholar
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Articles in the same Issue
- Frontmatter
- Effect of hydroxide and sulfite ion concentration in alkaline sulfite anthraquinone (ASA) pulping – a comparative study
- Novel insight in carbohydrate degradation during alkaline treatment
- Activated hydrogen peroxide decolorization of a model azo dye-colored pulp
- Effects of inorganic salts on the degradation of 2,5-dihydroxy-[1,4]-benzoquinone as a key chromophore in pulps by hydrogen peroxide under basic conditions
- Analysis of degradation products in rayon spinning baths
- Effect of cellulase-assisted refining on the thermal degradation of bleached high-density paper
- Synthesis and characterization of functionalized 4-O-methylglucuronoxylan derivatives
- Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer
- Depolymerization of cellulose during cold acidic chlorite treatment
- Enhanced stability of PVA electrospun fibers in water by adding cellulose nanocrystals
- Micro-nanoparticle gels obtained from bark for their use alone and with chitosan and Na-CMC in paper coatings
- Conversion of sulfur-free black liquor into fuel gas by supercritical water gasification
- Modification of acid hydrolysis lignin for value-added applications by micronization followed by hydrothermal alkaline treatment
- Preparation of lignin-containing porous microspheres through the copolymerization of lignin acrylate derivatives with styrene and divinylbenzene
- Wood-based activated carbons for supercapacitors with organic electrolyte
- Functionality and physico-chemical characteristics of wheat straw lignin, Biolignin™, derivatives formed in the oxypropylation process
- Antioxidant activity of various lignins and lignin-related phenylpropanoid units with high and low molecular weight
- Characterization of technical lignins by NMR spectroscopy: optimization of functional group analysis by 31P NMR spectroscopy
- Chemical composition of volatiles extracted from indigenous tree species of Uganda: composition of bark extracts from Psorospermum febrifugum and Milicia excelsa
Articles in the same Issue
- Frontmatter
- Effect of hydroxide and sulfite ion concentration in alkaline sulfite anthraquinone (ASA) pulping – a comparative study
- Novel insight in carbohydrate degradation during alkaline treatment
- Activated hydrogen peroxide decolorization of a model azo dye-colored pulp
- Effects of inorganic salts on the degradation of 2,5-dihydroxy-[1,4]-benzoquinone as a key chromophore in pulps by hydrogen peroxide under basic conditions
- Analysis of degradation products in rayon spinning baths
- Effect of cellulase-assisted refining on the thermal degradation of bleached high-density paper
- Synthesis and characterization of functionalized 4-O-methylglucuronoxylan derivatives
- Hydrophobic materials based on cotton linter cellulose and an epoxy-activated polyester derived from a suberin monomer
- Depolymerization of cellulose during cold acidic chlorite treatment
- Enhanced stability of PVA electrospun fibers in water by adding cellulose nanocrystals
- Micro-nanoparticle gels obtained from bark for their use alone and with chitosan and Na-CMC in paper coatings
- Conversion of sulfur-free black liquor into fuel gas by supercritical water gasification
- Modification of acid hydrolysis lignin for value-added applications by micronization followed by hydrothermal alkaline treatment
- Preparation of lignin-containing porous microspheres through the copolymerization of lignin acrylate derivatives with styrene and divinylbenzene
- Wood-based activated carbons for supercapacitors with organic electrolyte
- Functionality and physico-chemical characteristics of wheat straw lignin, Biolignin™, derivatives formed in the oxypropylation process
- Antioxidant activity of various lignins and lignin-related phenylpropanoid units with high and low molecular weight
- Characterization of technical lignins by NMR spectroscopy: optimization of functional group analysis by 31P NMR spectroscopy
- Chemical composition of volatiles extracted from indigenous tree species of Uganda: composition of bark extracts from Psorospermum febrifugum and Milicia excelsa
