The invention relates to a zero-carbon-emission LNG fuel power ship cold energy waste heat comprehensive gradient utilization system, and belongs to the technical field of energy utilization. The system comprises an LNG cold energy gradient utilization subsystem, a tail gas waste heat gradient utilization subsystem and a CO2 liquefaction capture subsystem; LNG and a secondary refrigerant are subjected to heat exchange, so that LNG cold energy gradient utilization is realized; a ship main engine is connected with a steam turbine through a heat exchanger to achieve tail gas waste heat gradient utilization; and CO2 generated by a ship main engine in the CO2 liquefaction capture subsystem is connected with a seawater desalination evaporator through the heat exchanger, and the seawater desalination evaporator is connected with a liquid CO2 storage tank through a steam-water separator to achieve CO2 liquefaction capture. The system can meet the requirements of ship electricity utilization, refrigeration house refrigeration, air conditioner refrigeration, seawater desalination and the like. Waste of LNG cold energy and tail gas waste heat is reduced, the ship energy utilization rate is increased, meanwhile, carbon emission is reduced, and energy conservation and emission reduction of the ship energy utilization system are achieved.
本发明涉及一种零碳排放的LNG燃料动力船冷能余热综合梯级利用系统,属于能源利用技术领域。包括LNG冷能梯级利用子系统、尾气余热梯级利用子系统和CO2液化捕获子系统;LNG和载冷剂之间通过换热,实现LNG冷能梯级利用;船舶主机通过换热器和蒸汽透平连接实现尾气余热梯级利用;CO2液化捕获子系统中船舶主机产生的CO2通过换热器和海水淡化蒸发器连接,海水淡化蒸发器通过汽水分离器和液态CO2储罐连接实现CO2的液化捕获;本发明能够满足船舶用电、冷库制冷、空调制冷、海水淡化等需求。减少了LNG冷能与尾气余热的浪费,提高船舶能源利用率,同时减少碳排放,实现船舶能源利用系统的节能减排。
Zero-carbon-emission LNG fuel power ship cold energy waste heat comprehensive gradient utilization system
一种零碳排放的LNG燃料动力船冷能余热综合梯级利用系统
2021-08-27
Patent
Electronic Resource
Chinese
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