How to Control Humidifying Tower

The humidification tower plays an important role in dust exhaust preheater

humidification cooling. It is lower than the resistance value of the exhaust

gas in the dust and will improve the collection efficiency of ESP.

For systems with five preheaters, in the case of normal production operations,

the exhaust gas temperature is from 320 ℃ to 350 ° C. The temperature of

the humidification tower gas is generally controlled at 120 °C. to 150 °C,

when the exhaust gas is in the dust which has the specific resistance of 1010

Ω • cm or less, the temperature can be reduced to meet this requirement the

unit water quantity of clinker 0.18 ~ 0.22t / t. The actual production is for

the humidification tower regulation and control, it can not only control the

amount of water spray atomization but will the check the operation parts. This

work is often overlooked, so screw conveyor is often blocked and this will

results in operation difficulties.

Under normal circumstances, if the kiln ignition temperature is low, the kiln

will stop feeding during humidification tower sprinkler, users also do not

have to open the electrostatic precipitator. Because the amount of dust in

this case the system is not significant, more important factor is that in the

above-mentioned two cases, the coal-fired combustion has good instability.

The chemical is incomplete combustion of the CO concentration , although it

is relatively high, this situation is not conducive to the safe operation of

the electrostatic precipitator. When the preheater export ultra-high exhaust

gas temperature, you can open the cold valve in order to protect the high-

temperature fan and ESP plates, when the gas temperature is up to 300 ℃,

humidification tower should be put into operation.

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