Exhaust gas recirculation refrigerant water cooling system for low-flash-point fuel main engine

The invention relates to an exhaust gas recirculation refrigerant water cooling system for a low-flash-point fuel main engine, which belongs to the technical field of ship energy utilization and comprises a diesel engine, a supercharger and an exhaust gas recirculation system. Waste gas in the waste gas recirculation system is led out from the waste gas end of the supercharger, sequentially passes through the waste gas washing tower, the waste gas cooler and the waste gas gas-liquid separator and enters the air end of the supercharger, and a circulation loop is formed. According to the invention, the cold energy of the low-flash-point fuel is used for cooling the exhaust gas recirculation. The heating requirement of low-flash-point fuel and the cooling requirement of exhaust gas recirculation are combined, the heat energy/cold energy requirement of a ship system is reasonably distributed, and the purposes of reducing NOx emission and lowering comprehensive energy consumption of a ship are achieved. 本发明涉及一种低闪点