公开一种船舶的废气余热回收系统。本发明的船舶的废气余热回收系统包括:热介质循环管线,设置于船舶上且工作流体经由所述热介质循环管线循环;气化器,设置于热介质循环管线中,且在气化器中,工作流体通过与从船舶的发动机排出的废气进行热交换而被气化;以及透平膨胀机,设置于热介质循环管线中,且在接收工作流体且使工作流体膨胀的同时生产轴功率,其中发动机发动机接收低闪点液化气体作为燃料,且工作流体在闭合回路的热介质循环管线中循环,同时使用通过使用低闪点液化气体作为燃料从发动机排出的废气作为热源而引起从液体到气体的相变。
A ship exhaust gas waste heat recovery system is disclosed. The ship exhaust gas waste heat recovery system of the present invention comprises: a heat medium circulation line provided on a ship and through which a working fluid circulates; a vaporization unit provided in the heat medium circulation line and in which exhaust gas discharged from the engine of the ship supplied with low flash point liquefied gas as fuel and the working fluid exchange heat; a gas-liquid separator provided in the heat medium circulation line and receiving the heated working fluid from the vaporization unit to separate gas-liquid; an expansion turbine for receiving the gaseous working fluid separated from the gas-liquid separator and expanding the working fluid to produce axial power; a condenser for receiving the expanded and cooled working fluid that passes through the expansion turbine, cooling the working fluid, and changing the phase of the working fluid into liquid; a supply pump provided in the heat medium circulation line and receiving and pressurizing the working fluid condensed from the condenser; a first recuperator for receiving a portion of the pressurized working fluid from the supply pump, heating the working fluid, and supplies the working fluid to the vaporization unit; and a second recuperator provided in parallel with the first recuperator, receiving the remaining part of the pressurized working fluid from the supply pump, heating the working fluid, and supplying the working fluid to the vaporization unit. The vaporization unit includes a vaporizer and a superheater provided along the direction in which the working fluid transferred from the supply pump flows. In the first recuperator, the working fluid pressurized by the supply pump exchanges heat with the working fluid to be supplied to the condenser after expansion and cooling in the expansion turbine, and in the second recuperator, the working fluid pressurized by the supply pump is heated by receiving waste heat from an onboard compression device or cooling device. Therefore, the energy efficiency of a ship can be improved.
船舶的废气余热回收系统
2024-07-30
Patent
Elektronische Ressource
Chinesisch
IPC: | B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F01K STEAM ENGINE PLANTS , Dampfkraftanlagen / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / F02G HOT-GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS , mit Heißgas oder Verbrennungsgasen betriebene Kraftmaschinenanlagen, wobei die Kraftmaschinen mit Verdrängerwirkung arbeiten |