Waste heat comprehensive utilization power generation system and power generation method for sintering production line

Abstract

The invention provides a waste heat comprehensive utilization power generation system for a sintering production line, which is characterized in that: a blanking port hood is arranged between a discharge port of a sintering machine and a feed port of a cooling machine, and an evaporator D is arranged in the blanking port hood; a hood A and a hood B are arranged at the feed port of the cooling machine, and the hood A is communicated with a heat exchanger A; the hood B is communicated with a heat exchanger B, and a hood C is arranged at the discharge port of the sintering machine; the hood C iscommunicated with a heat exchanger C, and water in a waste heat boiler continuously flows into an evaporator A, an evaporator B, an evaporator C and the evaporator D to be heated into hot water; and hot steam drives a generator through a steam turbine to generate power. The waste heat comprehensive utilization power generation system reasonably utilizes the waste heat resources of the whole sintering production line and the heat of a lot of flue gas generated when a sintering ore is cooled by the cooling machine, thereby greatly improving the waste heat recovery utilization efficiency of the sintering process, and increasing generating capacity.

Description

technical field [0001] The invention belongs to the technical field of waste heat power generation in the metallurgical industry, and relates to a power generation system and a power generation method for comprehensive utilization of waste heat in a sintering production line. Background technique [0002] The iron and steel industry is an important basic industry of the national economy and an important symbol of the country's economic level and comprehensive national strength. my country has become a major steel producer in the world. At the same time, the iron and steel industry, as a high-energy-consuming and high-polluting industry, is also one of the key targets for energy conservation and emission reduction. [0003] According to statistics, the energy consumption of the national ironmaking system accounts for 69.41% of the total energy consumption of the iron and steel industry, and the energy consumption of the sintering process accounts for about 10%-20% of the ener...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a power generation system for comprehensive utilization of waste heat in sintering production line, so as to overcome the problem of insufficient utilization of the heat of sintering flue gas and flue gas generated by cooling sinter ore in the existing sintering process waste heat power generation system, resulting in waste of high-temperature flue gas waste heat resources question

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