2017-Sustainable Industrial Processing Summit
SIPS 2017 Volume 2. Dodds Intl. Symp. / Energy Production
| Editors: | Kongoli F, Buhl A, Turna T, Mauntz M, Williams W, Rubinstein J, Fuhr PL, Morales-Rodriguez M |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2017 |
| Pages: | 306 pages |
| ISBN: | 978-1-987820-63-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Gasification of Coal Dust in Filtration Combustion Mode
Eugene Salgansky1; Andrey Zaichenko1; Dmitry Podlesnyy1;1IPCP RAS, Chernogolovka, Russian Federation;
Type of Paper: Regular
Id Paper: 375
Topic: 17
Abstract:
Gasifiers of dense layer, working in filtration combustion mode with superadiabatic heating, allow the use of high-ash and high moisture kinds of solid fuels to generate energy with high environmental friendliness and high efficiency of the process. However, the disadvantage of this type of gasifiers is that it is relatively low productivity. The goal of the work is to increase productivity.
In the present study an experimental study of steam-air gasification of coal grades K was carrying out. Laboratory experiments were carried out in a vertical continuous reactor, 66 mm in diameter and 400 mm in length. The experiments were performed on powdered coal with fraction 100-160 microns. In steam-air gasification of coal molar ratio steam/oxygen in the gaseous oxidant was equal to 3. The average consumption of the pulverized fuel in the experiments was 0.3 g/s.
Chromel-alumel thermocouples were used to measure the temperature. The gaseous products composition was analyzed using GC-CRYSTAL 5000 chromatograph.
A new method is proposed for gasification of a powdered fuel in filtration regime with continuous injection of fuel. The fuel is supplied suspended with the flow of oxidant gas, whereas the gas flow filters through a porous bed of large particles making a heat recovery medium. In the course of the experimental studies a principal possibility of pulverized fuel gasification in the fixed bed reactor with production of gaseous products containing up to 25% by volume of syngas was shown. It has been shown that increasing the steam content in the gaseous oxidant leads to combustion temperature reduction, lower carbon monoxide content and increased hydrogen content in the gaseous products. This method also provides means for a substantial enhancement of the specific throughput of a gasifier reactor compared to a vertical packed bed reactor.