The Modification of Illinois Coal By Low Temperature Distillation
The Modification of Illinois Coal By Low Temperature Distillation
Samuel Wilson Parr
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The same statements may also be made in connection with tests No. 3 and 4. ' TABLE 10 RESULTING CONSTITUENTS COMPARED WITH UNIT ASH, DRY BASIS Atmosphere of Oxygen Test No. 1 2 3 4 Be- fore After Be- fore After fote ^ter Be- fore After Average Temperature 279 346 379 375 Ash 8. 81 8. 81 8. 78 8. 78 8. 52 8. 52 8. 52 8. 52 Volatile Matter 36. 84 35. 87 38. 30 30. 38 37. 42 18. 72 35. 81 22. 20 Fixed Carbon 54. 21 56. 80 52. 90 58. 69 54. 05 60. 20 55. 66 56. 85 Sulphur 2. 19 2. 00 2. 10 1. 88 2.... 16 1. 71 2. 17 2. 98 B. T. U. 13385 13330 13403 13072 13399 11588 13425 11633 B. T. U. , Unit Coal Basis 14819 14497 14813 14788 14768 14793 14800 14838 MODIFICATION OF ILLINOIS COAL 29 In this table as in tables No. 3a and 36, ash is used as the basis of comparison in order to show the actual variation produced in the several factors. Since the samples were not identical, a slight variation in ash makes it necessary to compare the "before" and "after" values for each test. It is interesting to note that in an atmosphere of oxygen, the same general characteristics are evident as in Series 1 and 2.
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