The efficiency of the hot air furnace of the spray dryer

- Jun 05, 2020-

The efficiency of the hot air furnace of the spray dryer


The efficiency of the hot blast stove mainly depends on the fuel atomization nozzle. When the fuel atomization is uniform and the combustion is sufficient, the pressure and flow of the atomizing air and the fuel pressure and flow should be strictly controlled for this purpose. In addition, the atomization angle, spray height, and spray gun angle of the atomizing nozzle should be controlled within an appropriate range. The atomizing angle (α) of the general atomizing nozzle is 90°~120°, the spray height is 4~4.5 m, and the angle of the spray gun is kept between 110°~120°, to ensure that the spray material and the hot air can be fully Heat exchange. The choice of hot blast stove fuel can directly affect the cost of fuel consumption, such as the use of clean petroleum gas, light diesel oil, etc. will greatly increase the cost, the use of heavy oil, mixed oil, etc. must control its sulfur content, otherwise it is difficult to ensure SO2 in the exhaust gas Emissions meet standards. At present, many ceramic factories use pulverized coal separated from coal gas to blend coal ash to make coal water slurry, and spray the phenolic water and tar generated from coal-to-gas into the hot air furnace to burn, which can eliminate these harmful substances. , In the high temperature combustion, it will be turned into harmless water and CO2 discharged. This can not only greatly reduce the cost of combustion, but also make full use of these waste residues, waste liquid, energy saving and consumption reduction.

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