Читать книгу Coal-Fired Power Generation Handbook - James Speight G., James G. Speight - Страница 106

The oxidation process commences once a fresh coal surface is exposed to air; however, the oxygen absorption rate is inversely proportional to time if the temperature remains constant. Therefore, if the coal is stockpiled so that the temperature in the pile does not rise appreciably insofar as the heat is removed at least as fast as it is generated by the oxidation process, the oxidation rate and, thus, the deterioration or weathering rate of the coal will lessen with time, but nevertheless, deterioration of coal properties during storage may be a major issue for the ultimate use of the coal (Porter and Ovitz, 1917; Vaughn and Nichols, 1985).