Issues regarding the determination of the size of gas-liquid separators
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The dimensions of the gas-liquid separators equipped with wire mesh demisters, as specified in the Chemical Process Design Manual and HG-T20570.8 Design Specifications for Gas-Liquid Separators, are based on the values given in the diagrams. When calculating the dimensions of a gas-liquid separator for the inlet of a compressor, where the amount of liquid is very small and the distance between the high and low liquid levels is only 500 mm, the axial height of the gas-liquid separator calculated according to these specifications will be quite small. However, the SYT0515-2014 _ Specification for Oil-Gas Separators specifies that the minimum height-to-diameter ratio for such separators is 3. I would like to ask the experts: when designing and calculating gas-liquid separators, how do you determine their height?
The height-to-diameter ratio of the gas-liquid separator should be at least three, which is applicable to conditions with a high amount of mist entrainment. As for the height-to-diameter ratio of the gas-liquid separator associated with the compressor not reaching three, you can find out by checking the manufacturer’s drawings for the compressor. The key is to ensure the separation space at the upper part, while the lower part is mainly concerned with the liquid residence time.