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Working principle of blast furnace gas burner

Writer: admin Time:2022-01-11 00:00 Browse:

Blast furnace gas burners without any other high BTU gas ignition aid. Low calorific value blast furnace exhaust This product is suitable for different pressures, security, stability, reliability, have reached the international level of similar products. With the view of blast furnace operation principle of gas burners
	Working principle of blast furnace gas burner

Working principle of blast furnace gas burner
Blast furnace gas burners working principle is: the use of high calorific value gas as combustion fuel combustion burner lit, the lit burner ignition combustion, the flame is prospecting for exploration into the fire burner, the main gas pipe to open the valve, gas from the coal nozzle barrel strands flame into the combustor, combustion gun point after mixing with a strong swirling air radially, axially and then cut to small strands uniformly mixed air, as a flame-like jet stream into the furnace. Flame-tailed exploration is the main exploration and combustion flame gun fire and found flames burning suspend promptly send a signal to the controller, turn off the gas valve, cut off the delivery of gas to ensure the flame. Non-constant heating apparatus (boiler), due to the large thermal load level is not determined, the share of forced end of the burner combustion air distribution more difficult, and therefore, the body structure is generally self-diffusion type (or 15F), i.e. not with the combustion gas heat early air mixture (or only partially mixed at high hot strength requirements), but after injected into the furnace, the furnace is mixed with the combustion air side edges. Since interest diffusion burner is easy to tempering, scheduling ratio, the structure is simple, a high combustion load, good performance; big disadvantage is that the excess air ratio (typically 1.1 to 1.25), low flame intensity. Temperature heating apparatus (e.g. closed most industrial furnaces) due to the high temperature of the heat storage furnace, the combustion is not strong level small thermal load, the gas consumption is relatively stable, and therefore, a premix burner generally selected shares combustion methods, i.e., gas and combustion air in the burner or nozzle at the end of the share is premixed and then injected into the furnace combustion. Interest premix burner is a small excess air ratio (typically 1.03 to 1.05), high intensity flame; tempering the disadvantage is easy, less than scheduled. The same volume calorific value blast furnace gas is much lower than the coke oven gas, usually 3300-4200KJ / m3. Low calorific value blast furnace gas is not easy to burn, thermal effects proceeds to combustion, preheated outside air requirement in addition, blast furnace gas can be preheated. Therefore the use of blast furnace gas is heated updraft combustion system regenerator, half for preheating the air, the other half is used to preheat gas. Gas in the same air, through the chute into the combustion chamber for combustion flue.