Information on the composition ratios of various mixtures used for LNG mixed-refrigerant cooling
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For mixed-refrigerant cooling, the formula is crucial, but there is very little available in terms of relevant experience and theoretical knowledge. Let’s leverage everyone’s skills – let’s all do some research
Aren’t you in membrane separation? Are you interested in this too?
The proportions of mixed refrigerants are considered proprietary information held by those with experience, and are generally not disclosed
We’re just here to exchange experiences; it has nothing to do with business
Posting it in a thread would involve confidential business information. The temperature for each step of the manufacturing process varies, and the ratio of refrigerants differs significantly; many factors can affect this ratio. The process specifications can only provide an approximate range – specific situations require individual consideration. The original poster should describe the problem they’re facing; perhaps other users can help!
Our company’s liquefaction plant uses the MRC process, and the mixture ratio of refrigerants is determined based on the composition of the feed gas; different compositions result in different ratio combinations
Among all companies, this is considered the most crucial trade secret; it seems that it will not be provided to those without business partnerships. Moreover, the ratio of refrigerants varies depending on the equipment and production volume!
The ratio is determined based on the components of the feed gas and the manufacturing process, and it’s not completely fixed; it can be adjusted slightly. It’s not as strictly regulated as in the case of foods and pharmaceuticals, for example. It can only be said that the commonly used mixed refrigerants currently include methane, ethylene, propane, isopentane, and nitrogen, with the proportions determined according to the actual process requirements.
That’s true; moreover, when the amount of processing is large, the impact of ambient temperature is also significant
There is no fixed ratio for the mixture; it depends on the composition of the feed gas as well as the process flow of the facility. In actual operation, the ratios are not always determined solely based on theoretical calculations, and the specific mixing requires experience