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The discharge from the crystallization reactor is too slow; if pressurized discharge is used, would it then become a pressure vessel?

2019-05-05View Original

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The specific experiments have not been conducted yet. If a pressure of over 0.1 MPa is used, does that mean it becomes a pressure vessel? or slightly positive pressure (
Reply #22019-05-05
The capacity regulations specify that instantaneous discharging does not need to comply with these regulations
Reply #32019-05-05
There are too many factories that have accidents these days; it’s safer to work with pressure vessels – it won’t cost much more
Reply #42019-05-06
If a pressure of less than 0.1 Mpa is sufficient to ensure discharge, use that pressure. Although the Fixed Capacity Regulations stipulate that devices are not considered pressure vessels as long as they are under pressure only for an instant during material intake and discharge, it is difficult to determine exactly how long this \"instant\" lasts; therefore, it is recommended to avoid bringing such devices too close to the boundaries defined for pressure vessels.
Reply #52019-05-06
Does the crystallization tank discharge material through a bottom valve? What is the pipe diameter?
Reply #62019-05-20
Discharge from the bottom; the diameter has not been determined. The material is in a paste form with a very high solid content; its viscosity is not high, but the solid content is extremely high.
Reply #72019-05-20
I specifically checked the fixed capacity regulations, and I think my discharge can’t happen instantly. :'(:'(
Reply #82019-05-20
I’d like to ask the experts: in industrial applications, which method is more commonly used – micro-positive pressure discharge or negative pressure discharge?
Reply #92019-05-21
For the several crystallization tanks built some time ago, it seems that the inner cylinders are all in a vacuum state, with discharge valves at the bottom.
Reply #102019-05-21
The crystallization method might be different; evaporation crystallization requires a constant vacuum level. It’s not a material that is particularly difficult to extract, and a high-vacuum gear pump can be used for extraction. My operating conditions are different.

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