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A hydrogen metallurgy shaft furnace system

A technology of hydrogen metallurgy and shaft furnace, applied in the field of hydrogen metallurgy shaft furnace system, can solve the problems of high metallurgical cost and high energy consumption of shaft furnace, achieve obvious energy saving effect, simple process and reduce heat loss

Active Publication Date: 2022-05-13
钢研晟华科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above analysis, the embodiment of the present invention aims to provide a hydrogen metallurgical shaft furnace system to solve the technical problems of high metallurgical cost and energy consumption of the shaft furnace caused by using different reducing gas and cooling gas in the existing shaft furnace

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  • A hydrogen metallurgy shaft furnace system
  • A hydrogen metallurgy shaft furnace system
  • A hydrogen metallurgy shaft furnace system

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Embodiment 1

[0044] The invention provides a hydrogen metallurgy shaft furnace system, such as Figure 1 to Figure 8 As shown, the hydrogen-rich reducing gas heating unit is included, and the hydrogen-rich reducing gas heating unit includes a heater body, and the heater body (ie, the heater flue gas chamber) includes a heater sub-box 52 and a smoke chamber arranged at both ends of the heater body. Gas inlet 53 and flue gas outlet 58; the heater sub-box 52 is provided with interconnected high-temperature section heating tube bundle 69, medium-temperature section heating tube bundle 64 and low-temperature section heating tube bundle 61; hydrogen-rich reducing gas 14 passes through the low-temperature section heating tube bundle in turn 61. The middle-temperature section heating tube bundle 64 and the high-temperature section heating tube bundle 69 realize reverse heat exchange with the flue gas in the heating sub-box 52 .

[0045] Specifically, the heater body provided by the present inventi...

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Abstract

The invention relates to a hydrogen metallurgical shaft furnace system, which belongs to the technical field of shaft furnace metallurgy, and solves the technical problems of high metallurgical cost and high energy consumption of the shaft furnace caused by using different reducing gas and cooling gas in the existing shaft furnace. The hydrogen metallurgy shaft furnace system provided by the present invention includes an oxidation pellet feeding unit, an oxidation pellet reduction unit, a metal pellet cooling unit, a metal pellet discharge unit, a hydrogen-rich reducing gas heating unit and a hydrogen-rich cooling gas supply unit The metal pellet cooling unit is located under the oxidation pellet reduction unit and the two are connected; the hydrogen-rich reducing gas heating unit is used to supply high-temperature hydrogen-rich reducing gas to the oxidation pellet reduction unit; the hydrogen-rich cooling gas supply unit is used It is used to supply hydrogen-rich cooling gas to the oxidation pellet reduction unit and the metal pellet cooling unit. The invention uses the hydrogen-rich cooling gas with the same components as the hydrogen-rich reducing gas to cool the metal pellets, and realizes a low-cost hydrogen metallurgy process on the basis of low energy consumption.

Description

technical field [0001] The invention relates to the technical field of shaft furnace metallurgy, in particular to a hydrogen metallurgy shaft furnace system. Background technique [0002] As the iron and steel industry continues to increase the requirements for energy conservation and emission reduction, the hydrogen metallurgy technology that replaces carbon with hydrogen as a reducing agent is expected to completely change the environmental status of the iron and steel industry and bring hope to the sustainable development of the iron and steel industry. [0003] Hydrogen is the most active reducing agent. During the gas-solid reduction reaction of iron oxides, increasing the proportion of hydrogen in the gas reducing agent can significantly increase its reduction rate and reduction efficiency. Hydrogen metallurgy does not contact with coke during the metallurgical process, and the DRI produced is high-purity iron with high product quality, which is conducive to the produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B11/02
CPCC21B11/02
Inventor 周和敏沈朋飞张俊徐洪军许海川齐渊洪林万舟王锋严定鎏郝晓东高建军何鹏王海风
Owner 钢研晟华科技股份有限公司
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