May I ask how the oil dumping ports for dumping contaminated oil are designed in various companies?
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The area where our company dumps used oil is a flared nozzle; below this nozzle there is a manual valve, and pipes lead from there to underground tanks for storing used oil. A vent pipe is connected to these tanks, with a manual valve on it as well. Another pipe runs from the tanks to the flare system. Every time oil needs to be drained, the valve below the flared nozzle is opened to allow the oil to flow out through that nozzle. However, due to the pressure of the oil inside the tanks, it doesn’t flow down on its own, so it’s necessary to open the valve on the vent pipe in order for the oil to be able to flow out. The problem is that the oil in those tanks contains toxic gases such as hydrogen sulfide, and since they are also connected to the flare system, having an open vent pipe represents a safety hazard. Yet, after hours of discussion, no solution has been found to address this issue
1: The on-site oil pouring port is not used very frequently； II: According to you, venting to the flare line is not the same as venting on-site; since it’s all about discharge, why not release the pressure to the flare? III: Are there any regulations regarding the emptying of oil tanks, and what is the quantity and nature of the material contained within them?
There’s pressure in the flare pipeline network; is the line leading to the flare open, or can’t fluid get through it?
The pressure in torch pipelines is generally only a few thousand pascals of positive pressure; is the pressure in your torch pipeline system very high?
The vent pipe height is increased, resulting in higher exhaust. After all, it is intermittent manual operation, and it’s not easy to achieve zero leakage at all
The U-shaped tube design tends to freeze in winter; there is some pressure in the torch, and it’s not possible to pour the liquid in directly without making adjustments for venting~~~~ Usually, we use a positive-pressure respirator to pour the oil in~~~
Our company has the same problem!