本发明所公开的一种LNG动力船用燃料气化及冷热电三联供给系统及方法,该系统包括LNG气化及冷量回收单元、主机废气热量回收单元、低温朗肯循环单元、发电单元、富余冷量回收单元,以及各单元之间连接的船舶蒸汽、冷量和电力供应通道;本发明通过巧妙的设计使LNG在气化过程中实现冷热流体的大温差换热以保证气化完全,而在冷能回收过程中则利用冷热流体进行小温差换热以提高冷能回收效率,并通过独特的循环自蒸发设计和循环载冷剂回收冷能设计避免了传统气化器的冻结及效率不高等问题。本发明可同时进行船舶冷能、废热回收和动力循环发电,冷能及废热回收利用率较高,安全系数较大,有效提高了LNG动力船舶的能量转换利用效率。
The invention discloses a fuel gasification and combined cooling heating and power supply system and method for an LNG power driven vessel. The fuel gasification and combined cooling heating and powersupply system comprises an LNG gasification and cooling capacity recovery unit, a main engine waste gas heat recovery unit, a low-temperature Rankine cycle unit, a power generating unit, a surplus cooling capacity recovery unit and a vessel steam, cooling capacity and power supply channel connected among the units. According to the fuel gasification and combined cooling heating and power supply system and method for the LNG power driven vessel, by means of the ingenious design, large-temperature difference heat exchanging of cold fluid and hot fluid is achieved in the LNG gasification processso that thorough gasification can be guaranteed; in the cold energy recovering process, small-temperature different heat exchanging is carried out through the cold fluid and the hot fluid so that thecold energy recovery efficiency can be improved; and the problems of freezing, low efficiency and the like of a traditional gasifier are solved through the unique circular self-evaporation design andcold energy recovering through circular secondary refrigerator. According to the fuel gasification and combined cooling heating and power supply system and method for the LNG power driven vessel, cold energy and waste heat recovery and power cycle generation of the vessel can be carried out at the same time, the cold energy and waste head recovery rate is relatively high, the safety coefficient is relatively large, and the energy conversion utilization efficiency of the LNG power driven vessel is effectively improved.
LNG动力船用燃料气化及冷热电三联供给系统及方法
2023-10-24
Patent
Elektronische Ressource
Chinesisch
IPC: | F01K STEAM ENGINE PLANTS , Dampfkraftanlagen / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |