The drums and induced draft fans are equipped with frequency conversion; can the electric (or pneumatic) control mechanisms for the inlet dampers be removed?
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The drums and induced draft fans are equipped with frequency conversion; can the electric (or pneumatic) control mechanisms for the inlet dampers be removed?
Is your air damper affecting your operation?
Removing the damper can reduce energy consumption and initial costs; in my opinion it can be removed, with just a gate added as a partition； The only concern is that if there’s a fault with the frequency converter, there will be no way to make adjustments
There isn’t much money involved; when the inverter needs repair, it’s not necessary to shut down the furnace
The drums and induced draft fans are equipped with frequency conversion, and the electric (or pneumatic) control mechanisms for the inlet dampers cannot be removed. Reason: 1. The drum blower lost power with no means of adjustment ； ⒉The electric (or pneumatic) control mechanism for the inlet damper is removed, leaving no means for fine adjustment, which makes it difficult to control the oxygen content.
Variable frequency drives can be used to eliminate pneumatic or electric actuators, but it is better not to remove the control valves as they are not expensive. If there is a problem with the frequency converter, the air volume can be adjusted by manually operating the control valve.
It can be removed from a technical perspective, but it remains from an insurance perspective
It cannot be removed; otherwise, issues such as maintenance will become prominent. The cost of producing new gate plates and adjustment baffles is more or less the same
Generally, only one of the frequency converter and the control valve is needed; in some cases, the control method can be changed, allowing the other one to be removed. One will do; it’s okay
The large blower cannot be removed, as it is necessary to start it with no load; otherwise, the high current can easily burn out the motor.
It can be removed; our design relies solely on frequency conversion.
It seems it can be removed, but what if there are problems with the frequency conversion?
It can be kept! It doesn’t affect the frequency conversion effect anyway! It’s also a good precaution!
Taking everything into account, variable frequency is considered from the perspective of power saving, while fan dampers are considered from the perspective of the production process; each has its own focus. Each factory should decide whether to keep or discard something based on its own actual circumstances. It can’t be simply said whether it’s better to go or to stay.
It's better to keep personal opinions to oneself; there are multiple ways to make adjustments.
Personally, I don’t think it’s necessary to remove it; it’s just a matter of expanding the scope of inspections and maintenance； But there are also many benefits.
Since you already have it, keeping it offers many advantages. Why remove it? Adding a gate doesn’t save any money, and it also eliminates one means of adjustment; there’s really no need to remove it.
It is not recommended to cancel it. What if the frequency converter fails? Generally, when the frequency converter malfunctions, it has to be switched to operating at fixed frequency, and at that point there will be no possibility of making adjustments.
I think it can be removed, because that’s how the cracking furnaces in our ethylene plant work – by using variable-frequency exhaust fans, there is no need for flue dampers anymore, and no problems have arisen during operation.
For power station boilers, it is not recommended to remove them, as frequent adjustments are required.