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Device and process for making gas and reducing iron through coal derived fusion melting bed

A technology for reducing iron and coal-based, which is used in the field of gas-making reduction and coal-based fused bed gas-making and reduced iron devices, can solve the problems of not easy to increase carbon conversion rate, pollute metals, and be difficult to use, and reach the applicable scope of coal types. Wide, high carbon conversion rate, reasonable structure effect

Inactive Publication Date: 2012-04-11
刘元生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in the reduction process are: 1. The reduction technology in which the solid reducing agent and the oxide are heated together; the reducing agent will not only pollute the obtained metal, but also the conversion rate of carbon is not easy to improve
2. Gas reduction process: Since the use of natural gasification reducing agents cannot be widely obtained, the MIDREX shaft furnace cannot be widely promoted
3. Coal chemical reduction technology that converts independent solid reducing agent into gasification reducing agent: Due to the huge one-time investment and complicated process, it is not easy to be applied in industrial processes

Method used

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  • Device and process for making gas and reducing iron through coal derived fusion melting bed
  • Device and process for making gas and reducing iron through coal derived fusion melting bed
  • Device and process for making gas and reducing iron through coal derived fusion melting bed

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1, with reference to figure 1 , 2, a coal-based molten bed gas reduction iron device, it includes a fixed connection reduction furnace 1 and a gasification furnace 4, the reduction furnace 1 is provided with a reduction chamber, the reduction furnace 1 top and bottom are respectively provided with feed inlets 9. The material outlet 7 and the gas outlet 8; the gasifier 4 is a molten bed gasifier, the gasifier 4 is provided with a gasification chamber, and the gasifier 4 is provided with a coal injection nozzle 3 and an air nozzle 6 and the slagging outlet 5, a grate plate 2 is provided at the junction of the reduction furnace 1 and the gasification furnace 4, and the grate plate 2 is provided with a ventilation hole connecting the reduction chamber and the gasification chamber.

Embodiment 2

[0025] Embodiment 2, in the device for reducing iron by coal-based molten bed gas production described in Embodiment 1: the reduction furnace 1 is a shaft furnace, an open hearth furnace or a slope furnace.

Embodiment 3

[0026] Example 3, in the coal-based molten bed gas reduction device described in Example 1: the reduction furnace 1 is a shaft furnace, and the gasification furnace 4 is fixed at the lower part of the shaft furnace.

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PUM

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Abstract

The invention relates to a device for making gas and reducing iron through a derived fusion melting bed. The device is characterized by comprising a reduction furnace and a gasification furnace which are fixedly connected, wherein the reduction furnace is internally provided with a reduction chamber; the upper and lower parts of the reduction furnace are respectively provided with a feed inlet, afeed outlet and an air outlet; the gasification furnace is a fusion bed gasification furnace which is internally provided with a gasification chamber; the gasification furnace is provided with a coalnozzle, an air nozzle and a deslagging port; and the joint of the reduction furnace and the gasification furnace is provided with a grate plate which is provided with an air vent communicating the reduction chamber with the gasification chamber. The invention also relates to a process for making gas and reducing by using the device. The device is reasonable in design and high in coal gasificationrate and can be used for saving energy sources effectively.

Description

technical field [0001] The present invention relates to a non-blast furnace ironmaking device, in particular to a coal-based molten bed gas reduction iron device; the invention also relates to a gas reduction process using the aforementioned coal-based molten bed gas reduction iron device. Background technique [0002] The method of reducing metal oxides to metals with reducing agents and utilizing them is the most effective way to obtain metals. Modern methods of obtaining iron in this way can be roughly divided into two categories: one is to heat the solid reducing agent and iron oxide together, and the method of reducing the iron oxide after the solid reducing agent is burned and gasified; it is the most successful The case is the blast furnace. The other is a method of heating and reducing iron oxides by using a gasification reducing agent or converting a solid reducing agent into a gasification reducing agent; its most successful case is the MIDREX shaft furnace. Thes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/14
CPCY02P10/20
Inventor 刘元生
Owner 刘元生
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