Sintering waste heat and pure burning blast-furnace gas combined generating system
A technology of blast furnace gas and waste heat recovery system, which is applied in the direction of using multiple fuels for combustion, furnace, waste heat treatment, etc., to reduce the emission of blast furnace gas, ensure stable operation, and improve utilization efficiency
Inactive Publication Date: 2009-09-30
SHOUGANG CORPORATION +1
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And to a certain extent, it solves the problem of the release of blast furnace gas in iron and steel enterprises
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[0020] The low-temperature and low-pressure or medium-temperature and medium-pressure steam generated by the sintering waste heat recovery system 13 enters the drum 14 or the superheater 9 or the primary superheater 10 of the purely fired blast furnace gas boiler, and the feed water of the sintering waste heat recovery system is supplied by the secondary economizer 7 of the boiler supply. Through the adjustment of the burners 11 and 12 of the purely fired blast furnace gas boiler, medium-temperature medium-pressure or high-temperature and high-pressure steam is generated and enters the steam turbine 1 to do work, driving the generator 2 to generate electricity.
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The invention relates to a sintering waste heat and pure burning blast-furnace gas combined generating system, and belongs to the technical field of steel metallurgy waste heat utilization. The combined generating system comprises a sintering waste heat reclaiming system, a pure burning blast-furnace gas boiler, a steam turbine and a generator; the pure burning blast-furnace gas boiler is divided into an upper combustion system and a lower combustion system and adopts a cyclone burner, and the boiler is ensured to operate safely and stably by using an arrangement mode of front and back walls or tangential four corners; the low temperature and pressure or medium temperature and pressure vapor generated by the sintering waste heat replaces desuperheating water to enter an overheater of the pure burning blast-furnace gas boiler or directly enter a boiler barrel to generate the medium temperature and pressure or high temperature and pressure vapor for generating; and water for the sintering waste heat reclaiming system is supplied by a secondary coal economizer of the boiler. When the supply of the sintering waste heat system and the blast-furnace gas is enough, the lower combustion system is put into operation, and the system operates under higher load working conditions. The combined generating system has the advantages that the system can greatly improve the utilization efficiency of the reclaimed sintering waste heat, ensures the stable operation of the system, reduces the diffusion of the blast-furnace gas, and has good economic benefit and popularization and application values.
Description
technical field [0001] The invention belongs to the technical field of iron and steel metallurgy waste heat utilization, and in particular provides a combined power generation system of sintering waste heat and purely burning blast furnace gas. Background technique [0002] Iron and steel metallurgy is an industry with high energy consumption. Energy conservation and emission reduction is an important task for the sustainable development of iron and steel enterprises. The recycling of waste energy and waste heat in the iron and steel production process is an important trend in current development. However, there are many products for the recovery of waste heat in the iron and steel process It is low-quality steam, and the direct utilization efficiency is low. [0003] Among them, sintering waste heat recovery is one of the key technologies that domestic iron and steel enterprises are paying attention to. At present, there are mainly two ways of recovering waste heat from si...
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IPC IPC(8): F27D17/00F23C5/28F23C5/32F01K11/02F01K27/02F01D15/10
CPCY02P10/25Y02P80/15
Inventor 汪洪涛张效鹏岳勇杨天助国金雁
Owner SHOUGANG CORPORATION