Liquid level control issue in gas-liquid separators
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Gentlemen, in natural gas purification, what are the consequences of too high or too low liquid levels in the gas-liquid separator? What is the specific impact of high or low liquid levels on the gas-liquid separation efficiency? Personally, I think that a high liquid level can lead to excessive liquid carried in the natural gas, resulting in poor separation efficiency ； Too low a liquid level can easily lead to air ingress into the drainage system. Also, are there any standards or best practices regarding liquid level control in separators? Please share your thoughts freely.
The key is to check whether the separation space is sufficient, taking into account the customer’s process conditions; if there is a significant amount of liquid present, it is necessary to determine whether there is enough separation space above the liquid level
Our company also has gas-liquid separators, used for PTA mother liquor recovery. As for control systems, I’ve just started learning about them; I’ll ask our experienced colleagues here next time
Reply to 3# chen3316407: Is the gas-liquid separator vertical? Is the internal element a filter element, a wire mesh, or blades? If it is a filter element, there is no issue of gas-liquid entrainment at high liquid levels; however, an excessively high liquid level may submerge the filter element, reducing its effective area. A low liquid level has little impact on the separation efficiency. If it is a screen or blade, there should be a large volume of space for storing liquid; in other words, there is the issue of the liquid residence time, and the high and low liquid levels are determined based on this residence time.
I also want to know what the lowest liquid level should be?
I’m new to PTA. How do you handle the recovery of mother liquor?
I’m new to PTA. How do you handle the recovery of mother liquor? Can the relevant materials be shared? dcy20002001@163.com
Is the discharge pipeline at the bottom of the gas-liquid separator a type with a water seal U-bend? Should it be kept open at all times?