Pressure of the torch separator tank
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I would like to ask everyone: is the pressure in the liquid separation tank under the torch positive or negative? What is it approximately? Please share your thoughts; extra points for that
It should be positive pressure; otherwise, how can condensate be drained?
A slight positive pressure, of several tens of kilopascals, is required; otherwise, condensate cannot be drained and air will flow back into the flare venting system
Positive pressure, generally below 2 kPa; the specific value depends on the liquid level height in the water seal tank
Positive pressure. Our pressure is around 7 kPa, which is related to the water level in the water seal tank behind the liquid separation tank; the pressure is slightly higher than that water level.
It mainly depends on whether you have a medium for the torch; if not, a water seal tank is needed, whereas if it is available, a slight positive pressure can be maintained
If a gas holder is available, the flare water seal tank and the gas holder work in parallel; if gas does not enter the gas holder, it is released to the flare for combustion
Now most enterprises have gas cabinets, which makes it easier to eliminate flares and reduce air pollution
The separation tank is definitely under positive pressure; otherwise, there would be backflow due to negative pressure. With a slight positive pressure, any gas that cannot be stored in the gas holder is sent to the flare
Positive pressure operation; negative pressure allows air to enter the system, which is unsafe