Heat accumulating type steel slag heat stewing waste heat ORC power generation system and device

Abstract

The invention discloses a heat accumulating type steel slag heat stewing waste heat ORC power generation system and device. The heat accumulating type steel slag heat stewing waste heat ORC power generation system comprises a plurality of heat stewing pools, the heat stewing pools are connected with horizontal flow sedimentation pools, the horizontal flow sedimentation pools are connected with a water return pool, the two sides of the water return pool are provided with a heat accumulating pool and a cold water pool, the heat accumulating pool and the water return pool are connected with an ORC generator set, the cold water pool is connected with the plurality of heat stewing pools, the water return pool is connected with a cooling mechanism, the water return pool is connected with a spraywashing condensing tower through a first-stage spray pump, the cold water pool is connected with the spray washing condensing tower through a second-stage spray pump, and the cold water pool is connected with the plurality of heat stewing pools through a heat stewing water pump. The system is reasonable in structure, discontinuous steam generated by hot stewing of steel slag is recycled, and theenergy consumption ratio of iron and steel enterprises is reduced; and meanwhile, dust carried in steam can be effectively eliminated, the problem of white smoke elimination is solved, pollutant emission of the iron and steel enterprises is reduced, and the purification degree of industrial tail gas is further improved.

Description

technical field [0001] The invention relates to the technical field of steelmaking steel slag thermal waste steam treatment, in particular to a regenerative steel slag thermal residual heat ORC power generation system and device. Background technique [0002] Steel slag is the waste slag produced in the metallurgical industry, and its production rate is 8% to 15% of the crude steel output. At the beginning of simmering, its temperature is about 650°C, which contains a lot of heat. Steel slag hot stewing is to pour steel slag higher than 650°C into the hot stew pool, and intermittently draw water to reduce the temperature of steel slag to 650°C. Then cover the pit cover and continue to spray water. At this time, a large amount of low-pressure steam will be generated. [0003] But because the generation of steam is only within about 3 hours of the front section of hot stewing, the back section of hot stew seldom produces steam. The continuity of steam generation is very poor...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the steam generated during the steel slag heating process is discontinuous and cannot be directly used for power generation, and a regenerative steel slag heating waste heat ORC power generation system and device are proposed.

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