Natural gas combustor and hot-blast stove design method

Abstract

The invention relates to a natural gas combustor and hot-blast stove design method. The designed gas consumption of a natural gas combustor is 1600 Nm<3> / h; the natural gas combustor comprises an ignition combustor, a main combustor and an acceleration combustor; the designed gas consumption of natural gas of the ignition combustor is 50 Nm<3> / h; the designed gas consumption of natural gas of themain combustor is 1200 Nm<3> / h; the designed gas consumption of natural gas of the acceleration combustor is 350 Nm<3> / h; the design of a hot-blast stove comprises the design of the natural gas combustor; the hot-blast stove combines a combustion chamber and a mixing chamber into one; secondary mixing air is from hot air of kiln object rotating drum cooler; and the hot air uniformly enters from apyramid segment of the front end of the hot-blast stove. According to the natural gas combustor and hot-blast stove design method provided by the invention, the structure is simple, the number of finish machining parts is few, the convenience in production, installation and maintenance is realized, various working conditions of titanium dioxide rotary calcining kiln production can be met, the natural gas consumption amount is favorably saved, and the discharge of nitrogen oxide is reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide rotary calcining kilns, and in particular relates to a design method of a natural gas burner and a hot blast stove. Background technique [0002] The natural gas burners used in the existing titanium dioxide rotary calcining kiln include domestic burners and imported burners. The design of domestic burners is not easy to control the ignition and combustion, and the stability of the flame is not good, resulting in incomplete combustion and natural gas consumption. large. However, the imported burner is complex in design and expensive, and the repair and maintenance costs are relatively high. At the same time, in the design of the hot blast stove of the existing titanium dioxide rotary calcination kiln, the circumferential flame temperature at the interface between the hot blast stove and the burner is high, the lining material is easily damaged, and the NOX emission in the flue gas is hig...

AI Technical Summary

Problems solved by technology

[0002] The natural gas burners used in the existing titanium dioxide rotary calcination kiln include domestic burners and imported burners. The design of domestic burners is not easy to control the ignition and combustion, and the stability of the flame is not good, resulting in incomplete combustion and natural gas consumption. large

The imported burner is complex in design and expensive, and the repair and maintenance costs are high

At the same time, in the design of the hot blast stove of the existing titanium dioxide rotary calcination kiln, the circumferential flame temperature at the interface between the hot blast stove and the burner is high, the lining material is easily damaged, and the NOX emission in the flue gas is high. In addition, the existing hot blast stove The fixed support method is not conducive to the expansion and maintenance of the rotary kiln and hot blast stove

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