Abstract
A gasification/melting facility that can operate up to 10 bar and 1,550 °C with a maximum 1 ton/day capacity was developed for liquid and slurry-type combustible wastes. The main focus of the system development was minimal use of expensive fuel for maintaining the reaction temperature by replacing it with cheap waste oil for energy input. The carbon conversion obtained was 97% while the cold gas efficiency reached 77.6% for the refined waste oil. When the feed was refined oil mixed with fly ash from a municipal waste incinerator, the carbon conversion and cold gas efficiency were 93% and 71.9%, respectively, with a slag conversion ratio of 0.93. The slag produced from fly ash exhibited environmentally acceptable heavy-metal leaching values and thus can be applicable as road material and for other purposes. The optimal O2/feed ratio was 0.9–1.0 when only the refined waste oil was gasified, whereas the O2/feed ratio had to be higher than 1.2 when fly ash was mixed. In addition, data showed that gasifier temperature can be estimated by on-line methane concentration measurements.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ahn, Y. S. and Park, D. W., “Vitrification of Incineration Ash by Thermal Plasma,”J. Korean Ind. Eng. Chem.,12, 34 (2001).
Gu, J. H, Yeo, W. H, Seo, Y C, Lee, S. H. and Lee, J. K, “The Characteristics of Co-Incineration of Dewatered Sludge, Waste Oil and Waste Solvent in Commercial-Scale Fluidized Bed Incinerator,”Korean J. Chem. Eng.,19, 324 (2002).
Kim, J. J., Park, M. H. and Kim, C, “Performance Improvement of IGCC by a New Approach in Exergy Analysis,”Korean J. Chem. Eng,18, 94(2001).
Lee, S. J. and Yun, Y, “Optimal Oxygen and SteamFeed Ratios in Waste-Oil and Refined-Oil Gasification”J. Korean Ind. Eng. Chem.,13, 372 (2002).
Song, M. J. and Park, J. K., “Nuclear Wastes Vitrification Technology,”Chemical Industry & Technology,16, 212 (1998).
Wallman, P. H., Thorsness, C. B. and Winter, J. D., “Hydrogen Production from Wastes,”Energy,23, 271 (1998).
Yang, H. S., Lee, K. C. and Park, C. S., “Studies on the Fusibility of Fly Ash-Flux Mixtures,”J. Korean Ind. Eng. Chem.,8, 985 (1997).
Yun, Y and Yoo, Y D., “Performance of a Pilot-Scale Gasifier for Indonesian Baiduri Coal,”Korean J. Chem. Eng,18, 679 (2001).
Yun, Y, Yoo, Y D, Kim, W B. and Chung, S. W, “Combustion Melting Technology for Wastewater Sludges,” Proceedings of 2001 Fall KACIT Workshop on Ash Treatment and Application Technology, 95 (2001).
Yun, Y and Ju, J. S., “Development of Gasification/Melting Process for Coal and Combustible Wastes,”ACS Fuel Chemistry Division Preprints,47,175 (2002).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yun, Y., Ju, J.S. Operation performance of a pilot-scale gasification/melting process for liquid and slurry-type wastes. Korean J. Chem. Eng. 20, 1037–1044 (2003). https://doi.org/10.1007/BF02706934
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02706934