ISSN: 0304-128X ISSN: 2233-9558
Copyright © 2024 KICHE. All rights reserved

Articles & Issues

Conflict of Interest
In relation to this article, we declare that there is no conflict of interest.
articles 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.
Copyright © KIChE. All rights reserved.

All issues

상압유동층을 이용한 석탄의 가스화

Coal Gasification in a Fluidized Bed at Atmospheric Pressure

HWAHAK KONGHAK, February 1983, 21(1), 27-34(8), NONE
downloadDownload PDF

Abstract

크기 30-100 mesh의 호주산 준강점탄(medium-volatile bituminous coal)을 유동입자로 사용한 적경 7.6 ㎝의 상압유동층 반응기에서 석탄의 전 처리와 가스와 반응에 관하여 연구하였다. 석탄의 엉김성질을 제거하기 위한 전 처리실험의 조업 조건은 반응기 온도에 따른 FSI(Free Swelling Index) 변화를 고려하여 최적 조업조건을 설정한 다음, 이 최적 조건하에서 연속적으로 전처리를 행하여 가스화 공정의 원료인 char를 생산하였다. 가스화공정은 공기와 스증기를 가스화제로 사용한 저열량 가스화 공정으로서, 반응온도(600-980℃)와 가스화 매체의 유속(공기 : 15-20 ㎤/㎠sec, 수증기 : 1-4 ㎤/㎠sec)이 생성가스 조성에 미치는 영향을 실험적으로 조사했으며, 가스화 반응목적 생성물인 CO, H2, CH4의 성분합과 CO와 H2의 몰비 등을 고려하여, 가스화 공정의 최적 조업조건을 제시하였다. 이때의 최적 조업 온도는 960 ℃이었다.
Coal pretreatment and gasification were studied in a 7.6 ㎝-diameter fluidized bed at atmospheric pressure with Australian medium-volatile Bituminous coal in the range of 30-100 mesh. The optimum operating conditions of pretreatmnt to remove caking property were obtained by considering the effect of reactor temperature on FSI changes, then chars as feeding materials of gasification were continuously produced under the optimum operating conditions of pretreatment. By using low-BTU gasification with gasifier-mediums of air and steam, the effects of reactor temperature (600-980 ℃) and gasifier-medium flow rate (air : 15-20 ㎤/㎠sec, steam : 1-4 ㎤/㎠sec) on product gas composition were experimentally investigated, and then the optimum operating conditions of gasification were determined by considering the summation of combustible gases CO, H2, CH4 and the mole ratio of CO/H2. The optimum operating temperature was found to be 960 ℃ in the operating ranges of this experiment.

Keywords

The Korean Institute of Chemical Engineers. F5, 119, Anam-ro, Seongbuk-gu, 233 Spring Street Seoul 02856, South Korea.
Phone No. +82-2-458-3078FAX No. +82-507-804-0669E-mail : kiche@kiche.or.kr

Copyright (C) KICHE.all rights reserved.

- Korean Chemical Engineering Research 상단으로