Level control system for gas-liquid separators

Details Level control system for gas-liquid separators Level control system for gas-liquid separators

1994-09-26

1996-06-11

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137188, B01D 1700

Patent

active

055246656

ABSTRACT:
A gas-liquid separator system having a control system for controlling and maintaining a "normal" liquid level in the separator vessel. The system is capable of operating without the need for external power (e.g. electric, etc.) or the need for process gas to operate the valves. Also, the system is "fail safe" since the control valves for both the gas and liquid from the vessel will be in an open position if the control system fails. The system has control valve units on both the liquid and the gas outlets of the vessel. Each control valve unit is basically similar in constructon and has a valve element moveable between an open and a closed position by changes in differential pressure across a diaphram. The valve units are connected to the vessel and to each other to sense and response to any changes in the differential pressure between the top and the bottom of the vessel to open or close the respective valves to maintain or to reattain the normal level in the vessel.

REFERENCES:
patent: 4852395 (1989-08-01), Kolpak
patent: 5205310 (1993-04-01), Kolpak et al.

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