Sintered cooled waste gas waste heat power generating system with organic Rankine cycle function

Abstract

The invention relates to a sintered cooled waste gas waste heat power generating system with an organic Rankine cycle function. The sintered cooled waste gas waste heat power generating system comprises sintered ore waste heat recovery equipment, a waste heat boiler, a cooling tower, a steam condenser, a coal economizer and the like and further comprises an organic Rankine cycle power generating system composed of an evaporator, an expander, a second motor, a heat regenerator and a condenser. Sintered cooled waste gas waste enters the evaporator firstly, exchanges heat with an organic medium,then enters the coal economizer to heat boiler fed water, and finally enters the sintered ore waste heat recovery equipment to serve as a cooling medium to be circularly used; the heat-exchanged organic working medium enters the expander to do work for power generation, enters the condenser to be condensed through the heat regenerator and finally is pressurized through a working medium pump into the evaporator to be circularly used; and cooling water coming out of the cooling tower cools the organic working medium in the condenser and then comes back into the cooling tower to be circularly used again under the effect of a cooling water pump. Through the sintered cooled waste gas waste heat power generating system, deep recycling of sintered cooled waste gas waste heat is achieved, and thesintered ore waste heat power generating quantity is further increased.

Description

technical field [0001] The invention relates to the field of waste heat recovery and utilization, in particular to a sintering cooling waste gas waste heat power generation system with an organic Rankine cycle. Background technique [0002] At present, the energy consumption of the sintering process accounts for 10%~15% of the total energy consumption of my country's iron and steel enterprises, but the average energy consumption of the sintering process is more than 19% higher than that of foreign developed countries. The main reason is that the waste heat utilization rate of the sintering process is low. , less than 30%. In the composition of waste heat resources in the sintering process, sinter waste heat resources account for 65% to 71%. Therefore, how to efficiently recycle sinter waste heat resources is of great significance to reduce energy consumption per ton of steel in iron and steel enterprises and improve the utilization rate of waste heat and waste energy. . [...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of energy waste caused by unutilized waste heat of cooling waste gas at the exit of the sintering waste heat boiler, further recycle and utilize the sensible heat of sintering cooling waste gas, and increase the power generation capacity of sinter waste heat, the present invention provides a sintering cooling system with an organic Rankine cycle. Exhaust gas waste heat power generation system

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