* Gas Liquid Separation* - Theory and equations which describe settling of liquid droplets in gas phase as well as rise of gas bubble from liquid phase based on the density difference between two phase. The equations can be used to determine the terminal velocities of settling liquid droplets or rising gas bubbles and this terminal velocity which is sometimes called as critical velocity is used for sizing of gas liquid separation vessels.

* Liquid Liquid Separation* - Similar to gas-liquid separation principles, liquid-liquid separation is also governed by settling of heavier phase droplets or rise of the droplets of lighter liquid phase. The equations and theory that govern such separation are discussed here. The equations of terminal velocity are given which can be reduced to Stokes Law by making some simplifying assumptions.

** ***Liquid residence time calculator for vertical 2 phase separator vessels* - Calculate volume and residence time values between High High (HHLL), High (HLL), Low (LLL) and Low Low (LLLL) liquid level settings for a vertical separator vessel.

* Residence Time* - The term ‘residence time’ is usually used for continuous process flow through a process vessel, equipment or even a piece of pipe. Residence time for a vessel, equipment or a piece of pipe can be defined as the average time spent by a random fluid particle passing through the vessel during a continuous process.

* Two Phase separator calculator for horizontal Knock Out Drum (KOD) sizing* - This calculator can be used to size a horizontal two phase separator for removal of liquid droplets, such as a knock out drum. This calculator determines the minimum required size of such a separator to handle the given flowrates based on settling velocity of liquid particles (also reported in results).

* Two phase separator calculator for vertical degasser sizing* - This calculator can be used to size a vertical two phase separator for removal of gas bubbles or a vertical degasser vessel. This calculator determines the minimum required size of such a separator to handle the given flowrates based on terminal velocities velocity of gas bubbles (also reported in results).

* Two phase separator calculator for vertical Knock Out Drum (vertical KOD) sizing* - This calculator can be used to design a vertical Knock Out Drum (KOD) for removal of liquid droplets. This calculator determines the minimum required size of such a separator to handle the given flowrates based on settling velocity of liquid particles (also reported in results).

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