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发明授权
CN104964158B 用于存储和运输液化石油气的方法和系统 有权

用于存储和运输液化石油气的方法和系统
摘要：
一种用于在同一LPG船上存储和运输两种不同类型的LPG货物的方法，LPG船具有再液化单元。在再液化单元中，蒸发的气体冷凝并且然后返回至用于各个类型的LPG货物的至少一个货舱中。该方法进一步包括：使用至少一个运行的再液化单元以冷凝来自第一类型的货物的蒸气；使冷凝的蒸气通过热交换器；同时使来自第二类型的货物的蒸气流动通过热交换器，以通过与冷凝的蒸气进行热交换来冷凝蒸气；使离开热交换器的冷凝的蒸气返回至各个类型的货物内；以及如果返回至用于第二类型的货物的至少一个货舱的自由流动受到阻止，则泵送第二冷凝的蒸气以返回至第二类型的货物内。本发明还公开了用于在LPG船上存储和运输LPG的系统。
摘要（英）：

A method for storage and transport of LPG on LPG carriers, in particular two cargoes of different LPG types on same shipment, having reliquefaction units (300, 400) in which vaporized gases are condensed and then returned into at least one cargo tank (100) for the respective LPG cargo type. The method is further comprising: using the reliquefaction units (300, 400), at a minimum one running, as to condense vapour from the first cargo type; passing the condensed vapour through a heat exchanger (500); simultaneously flowing vapour from the second cargo type through the heat exchanger (500) as to condense vapour by means of heat exchanging with the condensed vapour; and returning the condensed vapours leaving the heat exchanger back into the respective cargo types. The present invention is also disclosing a system for storage and transport of LPG on LPG carriers.

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