Removal of Residual Chlorine in Coal by Steam Stripping
As a part of process engineering study of the perchloroethylene (PCE) coal desulfurization process, the minimization of residual chlorine content after the desulfurization process has been studied in detail. The residual chlorine in the coal is removed by a novel process, which involves the use of steam as the displacing agent. Steam, when passed through a bed of the PCE treated coal, washes away the residual solvent in coal. Two designs, viz. fluidized bed and packed bed steam strippers are discussed in detail. This paper presents the results of the design implementations and discusses the advantages and disadvantages of each design. It was found that the chlorine content of the coal treated in the packed bed steam stripper was not only decreased to a level lower than before steam stripping, but to a level lower than that of the raw samples before the PCE extraction.
P. Vishnubhatt et al., "Removal of Residual Chlorine in Coal by Steam Stripping," Fuel Science and Technology International, Taylor & Francis, Jan 1993.
The definitive version is available at http://dx.doi.org/10.1080/08843759308916100
Chemical and Biochemical Engineering
Article - Journal
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