Oxygen enriched burner and heating method using oxygen enriched burner
a burner and oxygen technology, applied in the direction of liquid fuel burners, lighting and heating equipment, combustion types, etc., can solve the problems of difficult uniform heating, and achieve the effects of high heat transfer efficiency, uniform heat, and excellent heat transfer efficiency
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example 1
[0106]In Example 1, a test was performed by changing the distance between the tip surface of the burner and a measurement surface, and convection heat transfer efficiency in the axial direction of the burner was evaluated.
[0107]FIG. 5 shows the positional relationship between the central fluid outlet and the peripheral fluid outlets in Example 1 and Comparative Examples 1 to 3. FIG. 5A is a side diagram and a plan diagram of the burner used in Comparative Example 1, FIG. 5B is a side diagram and a plan diagram of the burner used in Comparative Example 2, FIG. 5C is a side diagram and a plan diagram of the burner used in Comparative Example 3, and FIG. 5D is a side diagram and a plan diagram of the burner used in Example 1.
[0108]FIG. 6 shows the relationship between the distance from the tip surface of the burner and the amount of heat transfer in each burner of Example 1 and Comparative Examples 1 to 3.
[0109]Comparative Example 1 in FIG. 6 shows the relationship between the distance...
example 2
[0122]In Example 2, a tundish 50 as a simulated furnace as shown in FIG. 7 was used, and a heating test was performed using the oxygen enriched burner used in Example 1. Further, in Comparative Example 4, a conventional multi-tube type oxygen enriched burner was used, and a heating test was performed using the tundish 50 shown in FIG. 7.
[0123]In the tundish 50 (simulated furnace) shown in FIG. 7, the oxygen enriched burner used in Example 1 was attached to a through hole 52a formed in a furnace lid 52 so that a flame could be formed toward a furnace space 50A so as to heat the furnace space 50A covered by the furnace wall 51 and the furnace lid 52, and the furnace wall 51.
[0124]In addition, a plurality of thermocouples 55 for measuring the temperature of each part were attached to the bottom of the furnace wall 51, and a discharge outlets 53 for taking out pig iron and the like housed in the furnace space 50A were provided in two places.
[0125]In Example 2, in the heating test of the...
example 3
[0130]In Example 3, a tundish 50 as a simulated furnace as shown in FIG. 7 was used, and a heating test was performed using the oxygen enriched burner used in Example 1.
[0131]Further, in Comparative Example 5, a conventional multi-tube type oxygen enriched burner was used, and a heating test was performed using the tundish 50 shown in FIG. 7.
[0132]In Example 3, in the heating test of the tundish 50, the temperature distribution on the central axis of the burner was examined. Specifically, the relationship between the distance from the central axis of the burner and the furnace bottom temperature was measured by measuring the temperature of the parts (furnace bottom) with a plurality of the thermocouples 55 installed at the bottom of the furnace wall 51. The temperature after 40 minutes from the start of temperature increase was measured.
[0133]FIG. 9 shows the relationship between the distance from the central axis of the burner and the temperature at the bottom of the furnace when t...
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