The science and technology of combustion in highly preheated air

Kinetic and fluid dynamics modeling of methane/hydrogen jet flames in diluted coflow

“…The combustion chamber was operated close to well stirred reactor conditions and found to have a high and uniform radiative flux on chamber walls. Katsuki and Hasegawa [5] studied MILD combustion in a heat recirculating semi industrial furnace to find this technique as highly energy efficient and with significantly low NOx emissions. De Joannon et al [6] studied the applicability of existing reaction mechanisms to study MILD combustion technique.…”

Studies on a new high-intensity low-emission burner

“…Weber et al [9] have shown in their work that both air and fuel entrain considerable amounts of combustion products, and combustion proceeds at rates lower than in conventional burners. A recent study by Katsuki and Hasegawa [10] indicates the need for highly preheated air for creating mild combustion, and this has been commented upon by Wunning, indicating that it would work even without Regenerative burner Natural gas 23 1573 1.23 Not known [12] High-heat intensity burner LPG 5000 300 0.35 1650 [13] Blue-flame burner at ( ‫ס‬ 0.91) Kerosene Not known 300 0.77 1750 preheating. The authors [10], in response, hint further that this feature will be true in large systems not affected by heat losses leaving a residual position of non-clarity on the issue as to what happens for small power systems.…”

“…A recent study by Katsuki and Hasegawa [10] indicates the need for highly preheated air for creating mild combustion, and this has been commented upon by Wunning, indicating that it would work even without Regenerative burner Natural gas 23 1573 1.23 Not known [12] High-heat intensity burner LPG 5000 300 0.35 1650 [13] Blue-flame burner at ( ‫ס‬ 0.91) Kerosene Not known 300 0.77 1750 preheating. The authors [10], in response, hint further that this feature will be true in large systems not affected by heat losses leaving a residual position of non-clarity on the issue as to what happens for small power systems. The present work will answer the question in favor of Wunning's assertion by demonstrating mild combustion at low power level with high heat release rates using fuel and air at ambient temperature.…”

Effect of Air-Fuel Ratio on Temperature Distribution and Pollutants for Biogas Mild Combustion

“…MILD combustion produces higher thermal efficiency due to re-cycling of Exhaust Gas by using exhaust gas recirculation (EGR) [7,[9][10][11][12]. Others call it flameless oxidation (FLOX) [13,14], High-Temperature Air Combustion (HiTAC) [15,16] and Colourless Distributed Combustion (CDC) [17,18]. It emits low nitrogen oxides and carbon monoxide pollutant emissions [2,[19][20][21][22][23][24].…”

“…The MILD combustion required lower oxygen in oxidant stream and higher temperature of the reactant mixture. Exhaust gas recirculation (EGR) has previously been used for MILD combustion [11,15]. In this case, the combustion chamber needs to be enclosed in order to collect the exhaust gas and mixed with the supply fresh air.…”