Distributed energy system utilizing dry quenching waste heat

Abstract

The invention discloses a distributed energy system utilizing dry quenching waste heat. The distributed energy system utilizing the dry quenching waste heat comprises a waste heat recovery subsystem,a water vapor refrigeration power generation subsystem, an organic working medium power generation subsystem and a heat supply subsystem, wherein the waste heat recovery subsystem and the water vaporrefrigeration power generation subsystem are mutually connected through a water vapor superheater and a first condensate water evaporator, the waste heat recovery subsystem and the organic working medium power generation subsystem are mutually connected through an organic working medium evaporator, and the waste heat recovery subsystem and the heat supply subsystem are mutually connected through arecycle gas-heat storage water heat exchanger. According to the distributed energy system utilizing the dry quenching waste heat, through efficient recycle of the dry quenching waste heat, combined generation and combined supply of multiple energy sources including cold energy, heat energy and electric energy are realized, the waste heat utilization efficiency of the system is improved, the energy consumption of the system operation is reduced, the stability and the reliability of the system operation are improved, the energy utilizing norm that 'suitable temperature, gradient utilization' ismet, and huge economic benefits and ecological benefits can be obtained.

Description

technical field [0001] The invention relates to a distributed energy system, in particular to a distributed energy system utilizing CDQ waste heat. Background technique [0002] The traditional coke quenching process adopts wet coke quenching. After the hot coke is released from the furnace, it is transported to the coke quenching tower by the coke loading car, and the cooling water is sprayed by the upper spray device, and it is cooled to about 200°C and transported to the coke cooling platform. After separate treatment, it is stacked to the blast furnace for smelting molten iron. This method has been widely adopted in my country due to its small investment and fast start-up. However, this method of coke quenching consumes the sensible heat of hot coke, resulting in waste of waste heat. [0003] Dry coke quenching is an important energy-saving technology that uses inert circulating gas to extinguish coke in a dry quenching furnace and recovers waste heat. Dry coke quenchi...

AI Technical Summary

Problems solved by technology

[0006] Although the conventional waste heat-based distributed energy system realizes the combined supply of cold, heat and electricity through the recovery and utilization of waste heat, it usually relies on the absorption refrigeration unit to realize the cooling function, which leads to an increase in the initial investment of the system and reduces the cost of electricity. system economy

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