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Liquefied natural gas process

2020-09-24View Original

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For an LNG processing plant with a capacity of 300,000 cubic meters per day, there is a separate unit for removing heavy hydrocarbons before the material enters the cold box. The dehydration unit utilizes a dual-tower system: one tower for dehydration, another for adsorption, and yet another for regeneration. The regeneration cycle lasts 12 hours, during which time the material is heated for 360 minutes and then cooled for 360 minutes. The dehydrogenation unit uses a three-tower system for dehydrogenation: one tower is used for adsorption, another for regeneration, and the third for pre-adsorption. The regeneration cycle lasts 12 hours, with 390 minutes allocated for heating and 330 minutes for cooling; the cooling time during both dehydration and dehydrogenation processes is 240 minutes. When both the dehydration tower and the dehydrogenation tower are cooled simultaneously for this short period, the temperature of the natural gas entering the cold box will decrease. How will this affect the liquefaction rate in the cold box? Please ask

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