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Partial gasification of lignite in a bed with a pulsed reverse blast

Partial gasification of lignite in a bed with a pulsed reverse blast The aim of this work is to develop a technology of thermal processing of brown coal to produce carbonizate with increased strength. Here are presented the results of an experimental study of the process of partial gasification of brown coal (grade 3B) in the bed apparatus with pulsating reversed blow. In previous work, it was shown that satisfactory strength of a particle (no less than 8 MPa compression) is achieved by limiting the heating rate, as well as, the maximum temperature of the heating medium. To provide these conditions, it was proposed to use partial gasification of the coal in the fuel-bed apparatus using a pulsating supply mode of an oxidant. Parameters of blowing: flow rate 0.022 m3/(m2 s); blowing period 25 s; stop blowing period 150 s. Under these conditions, the producing lignite coke had a crush strength in the range of 8–10 MPa. The product yield was 56%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

Partial gasification of lignite in a bed with a pulsed reverse blast

Islamov, S.; Kulesh, M.
Coke and Chemistry , Volume 58 (5) – Aug 11, 2015
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References (2)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Allerton Press, Inc.
Subject
Chemistry; Industrial Chemistry/Chemical Engineering
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/S1068364X1505004X
Publisher site
See Article on Publisher Site

Abstract

The aim of this work is to develop a technology of thermal processing of brown coal to produce carbonizate with increased strength. Here are presented the results of an experimental study of the process of partial gasification of brown coal (grade 3B) in the bed apparatus with pulsating reversed blow. In previous work, it was shown that satisfactory strength of a particle (no less than 8 MPa compression) is achieved by limiting the heating rate, as well as, the maximum temperature of the heating medium. To provide these conditions, it was proposed to use partial gasification of the coal in the fuel-bed apparatus using a pulsating supply mode of an oxidant. Parameters of blowing: flow rate 0.022 m3/(m2 s); blowing period 25 s; stop blowing period 150 s. Under these conditions, the producing lignite coke had a crush strength in the range of 8–10 MPa. The product yield was 56%.

Journal

Coke and Chemistry – Springer Journals

Published: Aug 11, 2015

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