Boiler drum blowdown rate
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Has everyone’s boiler drum blowdown rate met the **standard? Hand valves are difficult to control; what about installing flow-limiting orifice plates? Please share your analysis
This post was last edited by Refiner on 2017-7-21 08:53. A perforated plate can be used
No control valve, dn20 manual valve
Add a flow control orifice plate, and use a drain control valve for regulation.
After continuous drainage by the unit, there is a continuous drainage tank; the steam at the top of this tank is recovered and sent to the deaerator, while the waste liquid at the bottom of the tank is discharged into a pool. The drain valve on the steam drum is controlled, and the valve position of the liquid level control valve in the drainage tank is set between 50% and 60%
The waste discharge rate is related to the steam generation pressure level of the boiler; generally, low-pressure boilers have a waste discharge rate of 4% based on the amount of steam generated, while medium-pressure boilers have a rate of around 6% They usually come with orifice plates, but can be controlled via a manual valve!