Abstract
Desulfurization and denitrogenation were systematically investigated by analyzing the chars and tars from pyrolysis of high sulfur Chinese Yanzhou bituminous coal with coke-oven gas (COG) at different operating conditions. The results were also compared with pyrolysis of coal under synthesis gas (SG), H 2 and N 2. It is found that desulfurization and denitrogenation in coal pyrolysis with COG, SG and H 2 are about 20% and 10–20% higher than those under N 2, respectively. At the same hydrogen partial pressure, desulfurization under COG (5 MPa) is about 4.5% higher than that under H 2 (3 MPa), while the denitrogenation is about 3.5% lower.
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