Reduce the temperature difference between pulse injection gas and flue gas inside the dust removal equipment and dehumidification treatment
① When the outside air temperature is too low and the distance between the air compressor stations is too long, the air supply path can be selected as follows: compressed air - air storage tank - air source triplet - air dryer - air heater - air bag - pulse valve. This kind of gas supply method has abundant dehumidification, small temperature difference between pulse injection gas and internal flue gas, and is not easy to condense.
② At that time, the most common way of supplying compressed gas in China was: compressed air - gas storage tank - gas source triplet - gas bag - pulse valve. This kind of gas supply method has the advantages of less investment and simple equipment, but when the outside air temperature is too low, the compressed gas treatment is not sufficient and easy to condense.
③ When the air compressor stations are not far apart and the air filter in the air source triplet can meet the dehumidification demand, it is only necessary to pay attention to the air filter close to the air bag, so the air dryer can be omitted. When the temperature is too low, the gas pipeline, air bag and pulse valve must adopt insulation method to avoid condensation of compressed air and condensation of dust collector.
Reduce air leakage
Stable flue gas temperature in a small range
When the flue gas temperature is too high, the cooling methods such as lowering the operating temperature and cooling air should be adopted immediately; when the flue gas temperature is too low, the heating methods such as increasing the operating temperature should be adopted immediately. So that the flue gas temperature can be stable in the regular range, ensure the normal and stable operation of the dust collector, reduce the condensation phenomenon.
Measures for strengthening heat insulation
The shell of the dust remover must adopt the method of heat insulation. Generally, rock wool, aluminum silicate board, pearl expanded rock and other heat insulation materials with low thermal conductivity, good heat insulation performance, low water absorption and good heat resistance are selected for the heat insulation of the equipment.
Strictly control the amount of water spray in humidifying tower
When the humidifying tower is selected as the cooling equipment at the kiln end of the cement dry process line, the water spray quantity of the humidifying tower should be strictly controlled under the condition of ensuring the inlet temperature. The humidifying tower should select outstanding spray gun as far as possible to make the water sprayed fine and uniform, and achieve outstanding cooling and tempering effect with less water consumption.
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