Vehicle-mounted hydrogen supply method and device for hydrogen-rich smelting of blast furnace or shaft furnace

Abstract

The invention relates to a vehicle-mounted hydrogen supply method and device for hydrogen-rich smelting of a blast furnace or a shaft furnace. A vehicle-mounted hydrogen supply system applied to the hydrogen-rich smelting of the blast furnace or the shaft furnace is constructed by combining the hydrogen supply demand of a steel plant and a vehicle-mounted hydrogen supply technology used by a hydrogen energy vehicle in the traffic field, and an effective and reliable way is provided for safe and stable hydrogen supply in the smelting process of the blast furnace or the shaft furnace for hydrogen-rich smelting test and production. Compared with a newly-built hydrogen production plant, the method and the device are low in investment and construction cost, simple in operation process, free of limitation of technology upgrading and transformation and high in flexibility. Meanwhile, two working long pipe vehicles and two gas inlet pipelines of a pressure reduction system are used for achieving continuous hydrogen supply required by the hydrogen-rich smelting of the blast furnace. Due to the fact that the hydrogen production technology is not mature and the difficulty of building a hydrogen production plant is high, supplying hydrogen through the vehicle-mounted hydrogen supply system not only solves the problem of hydrogen source supply of hydrogen-rich smelting, but also can conform to the change of rapid development of the hydrogen energy technology.

Description

technical field [0001] The invention belongs to the technical field of hydrogen-rich metallurgy, and in particular relates to a vehicle-mounted hydrogen supply method and equipment for hydrogen-rich smelting in blast furnaces or shaft furnaces. Background technique [0002] In order to cope with global climate change and reduce CO2 greenhouse gas emissions, low-carbon production has become the focus of social attention. my country plans to achieve CO2 emissions to peak before 2030, and strive to achieve carbon neutrality by 2060. The iron and steel industry is an important responsible entity for implementing carbon emission reduction goals and tasks, and is a core participant in the carbon trading market. In the whole process of iron and steel production, the blast furnace or shaft furnace ironmaking process accounts for about 80% of CO2 emissions. Therefore, the blast furnace or shaft furnace ironmaking process is the process with the largest CO2 emissions and is also the ...

AI Technical Summary

Problems solved by technology

At present, there are more than 1,000 blast furnaces or shaft furnaces in my country. How to conduct hydrogen-rich smelting tests and production for safe and stable hydrogen supply in the blast furnace smelting process has not found a suitable method and a mature approach

And most steel plants do not have coking plants, so they cannot provide hydrogen sources for blast furnaces at close range

The cost of building a new hydrogen production plant is too high and the construction period is long

At present, the hydrogen production technology is not yet mature, and the hydrogen production technology changes rapidly. The cost of upgrading the hydrogen production plant in the later stage is high, and it is not conducive to safe and stable hydrogen supply for the blast furnace smelting process.

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