Developments of Gas Turbine Combustors for Air-Blown and Oxygen-Blown IGCC

Gas Turbine Combustion and Ammonia Removal Technology of Gasified Fuels

“…However, the expression (34), could be supposed to have a range of both the gradient and the y-intercept occupied by two-staged combustion designs and exhaust temperature. The expression (35) as a function of φ p exhibits some range with the fuel CO/H 2 molar ratio, as shown in Figure 16 indicate that the conversion rates of NH 3 to NOx through HCN account for over half of the total conversion rates of NH 3 to NOx.…”

“…The Central Research Institute of Electric Power Industry (CRIEPI), developed an air-blown pressurized, two-stage entrained-flow coal gasifier [24], a hot/dry synthetic gas cleanup system [25], 150 MW, 1573 K-class [26], and 1773 K (1500 °C)-class gas turbine combustor technologies for low-Btu fuel [27]. In order to accept the various IGCC systems, 1773 K-class gas turbine combustors of medium-Btu fuels by wet-type or hot/dry-type synthetic gas cleanup methods have undergone study [28][29][30][31][32][33][34][35][36].…”

“…Since the power to premix the surplus nitrogen with the medium-Btu fuel is great, Hasegawa et al studied low-NOx combustion technologies using surplus nitrogen injected from the burner [29,30] and with the lean combustion of instantaneous mixing [31]. Furthermore, Hasegawa et al developed a low-NOx combustion technology for reducing both fuel-NOx and thermal-NOx emissions, in the case of employing hot/dry synthetic gas cleanup with an oxygen-blown IGCC [32][33][34][35][36].…”

“…Fuel constituents depend on the raw materials of feedstock, the gasification agents, gasifier types, and plant operations. Expressions (34) and (35) show that the conversion rate of nitrogenous compounds in the fuel to NOx, as part of the combustor's performance, could be guessed in the case where the fuel contained a CH 4 constituent at any given concentration, if experimental data on the intended gas turbine combustor was preliminarily obtained both in fuel containing no CH 4 and in a typical example of fuel containing an CH 4 at two φ p conditions each. In terms of its engineering implications, it is noteworthy that the above mentioned method can be applied to various fuels, as shown in Tables 1 and 2. 3.1.4.…”

Computational and experimental basis of the project of hybrid CCPP

“…Поэтому для некоторых вариантов ги-бридной схемы экономически оправданным может стать применение мокрой системы газо-очистки. А поскольку в схеме, приведённой на рис.1, предусматривается установка реакторов атмосферного типа, система газоочистки будет заканчиваться газопромывателем, понижаю-щим температуру газа перед дожимным ком-прессором с отмывкой от NH3, что позволяет уйти от известных проблем дожигания амми-ака [3,4].…”