The Gasification of Acetone via Partial Oxidation in Supercritical Water

Authors: Shyh-Ming Chern, Kai-Ting Hsieh

Abstract:

Organic solvents find various applications in many industrial sectors and laboratories as dilution solvents, dispersion solvents, cleaners and even lubricants. Millions of tons of spent organic solvents (SOS) are generated each year worldwide, prompting the need for more efficient, cleaner and safer methods for the treatment and resource recovery of SOS. As a result, acetone, selected as a model compound for SOS, was gasified in supercritical water to assess the feasibility of resource recovery of SOS by means of supercritical water processes. Experiments were conducted with an autoclave reactor. Gaseous product is mainly consists of H₂, CO, CO₂ and CH₄. The effects of three major operating parameters, the reaction temperature, from 673 to 773K, the dosage of oxidizing agent, from 0.3 to 0.5 stoichiometric oxygen, and the concentration of acetone in the feed, 0.1 and 0.2M, on the product gas composition, yield and heating value were evaluated with the water density fixed at about 0.188g/ml.

Keywords: Acetone, gasification, SCW, supercritical water.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1091946

References:

[1] M. Watanabe, H. Inomata and K. Arai, "Catalytic hydrogen generation from biomass (glucose and cellulose) with ZrO2 in supercritical water,” Biomass and Bioenergy, vol. 22, no. 5, pp. 405-410, 2002.
[2] M. Sasaki, B. Kabyemela, R. Malaluan, S. Hirose, N. Takeda, T. Adschiri and K. Arai, "Cellulose hydrolysis in subcritical and supercritical water,” J. of Supercritical Fluids, vol. 13, no. 1-3, pp. 261-268, 1998.
[3] T. Adschiri, R. Shibata, T. Sato, M. Watanabe and K. Arai, "Catalytic Hydrodesulfurization of Dibenzothiophene through Partial Oxidation and a Water-gas Shift Reaction in Supercritical Water,” I&EC Research, vol. 37, no. 7, pp. 2634-2638, 1998.
[4] Y. Park, J. T. Reaves, C. W. Curtis and C. B. Roberts, "Conversion of Tire Waste using Subcritical and Supercritical Water Oxidation,” Journal of Elastomers and Plastics, vol. 31, no. 2, pp. 162-179, 1999.
[5] Y. L. Kim, S. J. Chung, J. D. Kim, J. S. Lim, Y. W. Lee and S. C. Yi, "Uncatalyzed Partial Oxidation of P-xylene in Sub- and Supercritical Water,” Reaction Kinetics and Catalysis Letters, vol. 77, no. 1, pp. 35-42, 2002.
[6] M. Watanabe, T. Adschiri and K. Arai, "Polyethylene Decomposition via Pyrolysis and Partial Oxidation in Supercritical Water,” Kobunshi Ronbunshu, vol. 58, no. 12, pp. 631-641, 2001.
[7] M. Watanabe, H. Inomata, M. Osada, T. Sato, T. Adschiri and K. Arai, "Catalytic Effects of NaOH and ZrO2 for Partial Oxidative Gasification of n-Hexadecane and Lignin in Supercritical Water,” Fuel, vol. 82, no. 5, pp. 545-552, 2003.
[8] T. Richter and H. Vogel, "The partial oxidation of cyclohexane in supercritical water,” Chemical Engineering and Technology, vol. 25, no. 3, pp. 265-268, 2003.
[9] T. Sato, T. Adschiri, K. Arai, G. L. Rempel and F. T. Ng, "Upgrading of Asphalt With and Without Partial Oxidation in Supercritical Water, Fuel, vol. 82, no. 10, pp. 1231-1239, 2003.
[10] Y. Z. Wang, S. Z. Wang, Y. Guo, Y. M. Gong,; X. Y. Tang and J. Zhang, "Partial oxidative gasification of coking wastewater in supercritical water,” Advanced Materials Research, vol. 788, pp. 409-412, 2013.
[11] Z. Y. Ning, Q. Q. Guan, N. Ping and J. J. Gu, "Partial oxidation of phenol in supercritical water,” Advanced Materials Research, vol. 726, pp. 2714-2717, 2013.
[12] Z. Ge, S. Guo, L. Guo, C. Cao, X. Su, H. Jin, "Hydrogen production by non-catalytic partial oxidation of coal in supercritical water: Explore the way to complete gasification of lignite and bituminous coal,” International Journal of Hydrogen Energy, vol. 38, no. 29, pp. 12786-12794, 2013.
[13] T. Sato, P. H. Trung, T. Tomita, N. Itoh, "Effect of water density and air pressure on partial oxidation of bitumen in supercritical water,” Fuel, vol. 95, pp. 347-351, 2012.
[14] M. T. Liang, S. M. Chern, M. Y. Yu, S. C. King and S. Y. Lin, "Gasification of Oil and Sewage Sludges in Subcritical and Supercritical Water,” in Proc. 8th Meeting on Supercritical Fluids, Bordeaux, 2002.