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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 11, 2005
Accepted November 21, 2005

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Characteristics of air-blown gasification in a pebble bed gasifier

Young Chan Choi^† Jae Goo Lee Jae Ho Kim Jae Chang Hong Young Ku Kim Sang Jun Yoon See Hoon Lee Moon Hee Park¹

Energy Conversion Research Dept., Korea Institute of Energy Research, Daejeon 305-343, Korea ¹Daesung Institute for Clean Energy, Daegu 703-833, Korea

Korean Journal of Chemical Engineering, May 2006, 23(3), 380-384(5), 10.1007/BF02706738

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Abstract

High temperature air-blown gasification is a new concept to utilize the waste heat from gasifier that is called multi-staged enthalpy extraction technology. This process was developed to solve the economic problems due to air separation costs for the oxygen-blown as a gasifying agent. In this study, we have constructed a pebble bed gasifier and operated it by controlling the pebble size and bed height with three different types of coal (Kideco, Datong and Drayton coal). As a result, we can produce syngas with a calorific value of 700 kcal/Nm3 at an air temperature of 650 °C; the performance of high temperature air gasification was strong in the order of Kideco coal, Datong coal and Drayton coal. Also, from the data of the exterior analysis of slag that is attached to the surface of pebbles, we can know that the iron component is considerably high. This means the increase in restored metallic iron component seems to contribute to the solidification of slag.

Keywords

Gasification Pebble Bed Solid Waste Coal High Temperature Air

References

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