Document Type

Book Chapter

Research Focus Area

Catalysis and Reaction Engineering

Publication Version

Published Version

Publication Date

1977

Journal or Book Title

Coal Desulfurization

Volume

64

First Page

305

Last Page

320

DOI

10.1021/bk-1977-0064.ch023

Abstract

The pioneering investigation of Jacobs and Mirkus (1) showed that substantial amounts of sulfur could be removed from Illinois No. 6 coal by treatment with mixtures of air, nitrogen, and steam in a fluidized bed reactor at moderately elevated temperatures. Thus by treating coal, which had been ground in a hammer mill (100% through 8-mesh screen), with a gas mixture containing 2.7% oxygen, 35% steam, and 62.3% nitrogen at 510°C for 30 min, the sulfate and pyritic sulfur content of the solids was reduced about 80% and the organic sulfur content 10%. However, at the same time the content of combustible volatile matter was reduced about 65%. Desulfurization improved with increasing residence time and decreasing particle size, but it was affected only slightly by oxygen concentrations in the range of 2-10% or steam concentrations in the range of 0-85%. The sulfur content of the char declined as the treatment temperature.

Comments

Reprinted (adapted) with permission from Coal Desulfurization Chapter 23, pp 305–320 DOI: 10.1021/bk-1977-0064.ch023. Copyright 1977 American Chemical Society.

Copyright Owner

American Chemical Society

Language

en

File Format

application/pdf

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