Partitioning of nitrogenous species in the fuel-rich stage of reburning
Partitioning of nitrogenous species in the fuel-rich stage of reburning
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DOI：
10.1021/ef00026a001
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发表时间：
1991-03
期刊：
影响因子：
5.3
通讯作者：
T. Burch;F. Tillman;Wei-yin Chen;T. Lester;R. Conway;A. Sterling
中科院分区：
文献类型：
--
作者：
T. Burch;F. Tillman;Wei-yin Chen;T. Lester;R. Conway;A. Sterling
在小型流动反应器中研究了再燃燃料种类对再燃富燃段固定氮组分分配的影响。甲烷、己烷、苯、烟煤和褐煤被用作再燃燃料。在1100 ° C、约1000 ℃下，用CO2（16.8%）、O2（1.95%）、NO（1000ppm）和氦气组成的模拟烟气进行了实验。0.2s停留时间。总固定氮（TFN）的形态被发现强烈依赖于燃料类型和化学计量比（SR）。富化学计量比促进NO向HCN的转化，而贫化学计量比促进HCN向N2的转化。在此模拟再燃阶段，气态燃料的最佳TFN生成化学计量比为约100。SR=0.95
The effect of reburning fuel type on the partitioning of fixed-nitrogen species in the fuel-rich stage of reburning was studied in a bench scale flow reactor. Methane, hexane, benzene, bituminous coal, and lignite were used as reburning fuels. A simulated flue gas consisting of CO 2 (16.8%), 0 2 (1.95%), NO (1000ppm), and helium was used for experiments at 1100 o C and ca. 0.2s residence time. The total fixed nitrogen (TFN) speciation was found to depend strongly on fuel type ans stoichiometric ratio (SR). Rich stoichiometries promoted conversion of NO to HCN, whereas conversion of HCN to N 2 was promoted by lean stoichiometries. In this stimulated reburning stage, the optimum stoichiometry of TFN production for gaseous fuels was ca. SR=0.95