Intermediate medium heat exchanging device for supercritical water oxidation system

An intermediate medium heat exchanging device for a supercritical water oxidation system, which comprises:

• a material main loop and an intermediate medium loop, wherein:
• a material pump (1), a preheater (3), a spray desuperheater (5), a reactor (4) and a regenerator (8) are connected in sequence to form the material main loop;
• a buffer tank (2), a circulating pump (12), the regenerator (8), the preheater (3) and a water cooler (10) form the intermediate medium loop;
• the material pump (1) is connected with an inner pipe inlet of the preheater (3), an inner pipe outlet of the preheater (3) is connected with the spray desuperheater (5), the reactor (4) is connected with an inner pipe inlet of the regenerator (8);
• the buffer tank (2) is connected with an outer pipe inlet of the regenerator (8) through the circulating pump (12), an outer pipe outlet of the regenerator (8) is communicated with an outer pipe inlet of the preheater (3), an outer pipe outlet of the preheater (3) is connected with the buffer tank (2) through the water cooler (10);
• a back pressure valve (11) is located above the buffer tank (2);
• the intermediate medium heat exchanging device further comprises a replenishment branch, the replenishment branch comprises a cooling water pump (6), an outlet of the cooling water pump (6) is divided into two sub-branches, one sub-branch is connected with the spray desuperheater (5);
• another sub-branch is connected with the buffer tank (2).