Chlorine in Coal: Proceedings of an International Conference(v. 17 Coal Science & Technology S.)

The Illinois basin coals have a chlorine content which varies from 0.1% to values in excess of 0.5%. The mean chlorine content of the coal being mined is steadily rising. Customers are already expressing some unease and contracts limiting the chlorine content of coal have been reported. This has potentially significant implications for the industry. The object of this Conference was to attempt to quantify the impact of coal chlorine content on a variety of coal-using technologies, and to identify new research which is necessary to allow a rational definition of the limits of chlorine content required for each technology. The distribution of chlorine in the Illinois Basin coals was considered, and the current state of knowledge of the forms in which the chlorine is present in the coal was reviewed. The release of the chlorine from the coal during its processing, and the forms in which it is present in the products was examined. This information permits an assessment of the viability of methods of removing chlorine, either in coal preparation or from the post-processing products. The effect of chlorine on the coal conversion and combustion processes, and on the balance of the plant was reviewed. The most important effects are on the corrosion of construction materials at both high and low temperatures. These proceedings should be of interest to power plant, corrosion, and chemical engineers, and to coal cleaning technologists and researchers.

Table of Contents:
Introductory Remarks (W.L. Wells and J. Stringer). Distribution of Chlorine in United States Coal (L.J. Bragg et al.). Distribution and Forms of Chlorine in Illinois Basin Coals (C.L. Chou). Chemical, Extraction-Based, and Ion Chromatographic Methods for the Determination of Chlorine in Coal (J.A. Cox). An XAFS Investigation of the Form-Of-Occurrence of Chlorine in U.S. Coals (F.E. Huggins and G.P. Huffman). The Effect of Coalbound Chlorine on Corrosion in Coal Gasification Plants (W.T. Bakker and R.A. Perkins). Effects of Chlorine on Hot Gas Desulfurization Sorbents (S.C. Jain et al.). Chlorine Related Degradation of Materials in Coal Liquefaction (J.R. Keiser and R.R. Judkins). Chloride Corrosion in Direct Coal Liquefaction (B.H. Davis). Corrosion Behavior of Metallic Materials in Chlorine-Containing Gaseous Environments (M.J. McNallan). Effect of Chlorine on Corrosion in AFBC's (V.K. Sethi). Effect of Coal Chlorides on Furnace Wall Corrosion (P.L. Daniel). The Effects of Coal Chlorine on Fireside Corrosion (E. Latham et al.). The Use of High Chlorine Coals in Industrial Boilers (J.E. Oakey et al.). Pressurized Fluidized-Bed Combustion of Illinois High-Sodium/High-Chlorine Coal and its Derived Char (S.H.D. Lee et al.). Effects of Coal Chloride on Spray Dryer FGD Systems (G.M. Blythe and R.G. Rhudy). Materials Experience in the Ratcliffe Chloride Presrubber Rig (F.G. Hicks et al.). Impact of Chlorine-Containing Species on Coal-fired, Open-Cycle, Magnetohydrodynamic Power Generation System (A.C. Sheth et al.). The Influence of Coal Chlorine Contents upon the FGD Process System Configuration for Drax (UK) Power Station (J.R. Cooper and I.A. Johnson). Effect of Chlorine Content on Materials Exposed in Coal Fired Fluidized Beds (R.Q. Vincent and A.M. Manaker). Evaporator Tube Wastage and Chlorine (V.K. Sethi and I.G. Wright). Studies of Chlorine Removal from Coal: Hot Water Leaching and Heat Treatment (H.L. Chen et al.). Engineering, Environmental, and Economic Limits of Chlorine Removal in Coal Preparation (J.M. McCormick and J.A. Fitzpatrick). Conceptual Design and Economic Evaluation of a Coal Dechlorination Plant (W. DePriest et al.).