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System and method for supplying heat to sponge iron production process through nuclear reaction system

A technology of sponge iron and reforming system, applied in the field of metallurgical chemistry, can solve problems such as increasing greenhouse gas emissions, and achieve the effects of reducing CO2 emissions, good safety, and reducing consumption

Pending Publication Date: 2017-12-01
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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Problems solved by technology

[0004] The heat source in the two processes all comes from the oxidative combustion of natural gas and top gas, and all the carbon in the final fuel produces CO 2 , increasing greenhouse gas emissions

Method used

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  • System and method for supplying heat to sponge iron production process through nuclear reaction system
  • System and method for supplying heat to sponge iron production process through nuclear reaction system
  • System and method for supplying heat to sponge iron production process through nuclear reaction system

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Embodiment Construction

[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0054] Such as figure 1 As shown, the system used in the present invention includes a nuclear reaction system 9 , a reforming system, an intermediate heat exchanger, a shaft furnace system, a water vapor addition system, a decarbonization device, a mixing device 10 and a gas purification system 11 . In this example, the nuclear reactor of the nuclear reaction system 9 uses a pebble bed type high-temperature gas-cooled reactor, and has a first gas inlet for feeding helium and a first gas outlet for outputting helium; the reforming system includes a preliminary Heater 6 and reformer 7; reformer 7 ha...

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Abstract

The invention relates to a system for supplying heat to a sponge iron production process through a nuclear reaction system. The system comprises the nuclear reaction system, a reforming system, an intermediate heat exchanger, a vertical furnace system, a vapor adding system, a decarburization device, a mixing device and a gas purifying system. The invention further relates to a method of producing sponge iron through the system. According to the system and the method provided by the invention, nuclear energy adopted is a clear primary energy source, and is used as an energy source of a direct-reducing iron-making process, so that temperature conditions needed for reforming reaction are guaranteed, greenhouse gas and other harmful waste are not exhausted into environment; and the system is applied to the direct-reducing iron-making field of a gas-based vertical furnace, can effectively reduce consumption of stone energy, and reduces CO2 emission from source.

Description

technical field [0001] The invention relates to the field of metallurgical chemistry, and more specifically relates to a system and method for using a nuclear reaction system to supply heat for the process of producing sponge iron. Background technique [0002] my country is a big country in steel production. In 2015, the crude steel output in mainland China was 804 million tons, accounting for 49.5% of the global total. However, the structure of the iron and steel industry is unreasonable, the ratio of iron and steel is high, and the proportion of electric furnace steel is small. Some special steel varieties still need to be imported. my country's pig iron production is mainly produced by the long process of blast furnace ironmaking-converter steelmaking, which consumes energy and resources. Large, CO 2 Emissions are high. As the main non-blast furnace ironmaking technology, gas-based shaft furnace direct reduction technology has been maturely applied abroad. Gas-based sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/02
CPCC21B13/0073C21B13/02Y02P10/122Y02P10/143
Inventor 员晓范志辉刘亮曹志成吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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