LNG liquefaction process refrigerant
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I would like to ask if the seniors are aware of the issue where the temperature in the LNG liquefied natural gas cryogenic tank doesn’t drop! How should we determine what type of refrigerant is lacking? How to add it!
Check the refrigerant ratio provided by the manufacturer, and then specifically look at which temperature range is higher
There is a specified ratio, but after it runs for a while, it’s not clear which component is running low! The temperature is hard to adjust
Which cold box are you referring to, or is it the issue that the temperature of that system doesn’t drop? What cooling method do you use?
Determine which refrigerant is lacking based on the temperatures at the lower, middle, and upper sections
Observe the temperature field, as well as the temperatures before and after the throttle valve in the pre-cooling, liquefaction, and subcooling stages, along with the compressor exhaust pressure and power
It is recommended to conduct an analysis using a chromatograph to find out; compare this with the refrigerant mixture ratio provided by the manufacturer