Iron and steel smelting technology of blast furnace technology

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The modern blast furnace top pressure up to 0.15 ~ 0.25MPa, there are a lot of pressure in the furnace top gas can. I blast furnace top gas pressure turbine power generation unit (Top Pressure the Recovery Turbine), is internationally recognized as a valuable energy recovery, it is the use of blast furnace top gas pressure and thermal expansion work done by the turbine, which drive the generator to generate electricity. TRT process is dry, wet, including wet dust of the blast furnace gas turbine power generation for the wet TRT, dry-type dust, compared with dry-type of TRT. The current widely used wet device, but the overall trend is the dry type. Dry dedusting exhaust gas temperatures are high, gas volume, the pressure loss is small, less water, about 30% of the dry-type TRT than wet multi-power generation. TRT power generation is a technique of the energy consumed by the high-pressure operation of blast furnace recycle blower, does not produce any pollution, low cost of power generation is the major energy-saving technology of blast furnace ironmaking process.
This technology more popular in foreign countries, such as Japan TRT technology penetration has reac hed 90%. China, TRT technology in the penetration rate of 1000m3 large blast furnaces less than 40%, especially in the utilization rate of dry-type TRT fewer tons of iron capacity, with tons of iron and water saving technology index and foreign advanced steel-producing countries there is a large gap between the localization rate of the equipment is relatively low. Therefore, introduction, digestion and absorption of foreign advanced technology, especially after the digestion and absorption of integrated innovation, research and development with independent intellectual property rights of dry TRT technology and equipment, China s future direction of development of the TRT technology.
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