Blast furnace front oxygen enrichment system

A pre-oxygen-enriched, blast furnace technology, applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems such as explosions and pipeline combustion, and achieve the effects of convenient operation, precise flow control, and stable pressure

Inactive Publication Date: 2017-05-31
SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the process of repeated boosting and depressurization, high-pressure oxygen is transported, and it is easy to cause pipeline combustion and explosion accidents due to excessive oxygen flow rate at the moment the valve is opened.

Method used

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  • Blast furnace front oxygen enrichment system

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Embodiment Construction

[0026] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific examples.

[0027] Such as figure 1 As shown, a blast furnace front oxygen enrichment system includes: an oxygen generating device 1, a front oxygen enrichment pipeline 2, a mixer 3, an air filter 4, a blower 5, a hot blast stove 6 and a blast furnace 7; the mixer 3 Including a first interface 8, a second interface 9 and a third interface 10, the first interface 8 communicates with the oxygen generating device 1 through the oxygen-enriched pipeline 2 before the machine, and the second interface 9 communicates with the air The filter 4 communicates, the third interface 10 communicates with the blower 5, the blower 5 communicates with the hot blast stove 5 through an air outlet pipe 11, and the hot blast stove 6 communicates with the blast furnace 7; On the front oxy...

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Abstract

The invention discloses a blast furnace front oxygen enrichment system which comprises an oxygen generation device, a front oxygen enrichment pipeline, a mixer, an air filter, an air blower, a hot blast heater and a blast furnace. The mixer comprises a first connector, a second connector and a third connector, the first connector communicates with the oxygen generation device through the front oxygen enrichment pipeline, the second connector communicates with the air filter, and the third connector communicates with the air blower. The air blower communicates with the hot blast heater through an air outlet pipe, and the hot blast heater communicates with the blast furnace. The front oxygen enrichment pipeline is sequentially provided with an oxygen inlet check valve, an oxygen pressure adjusting valve, an oxygen flow adjusting valve, a fast cut-off valve and an oxygen flow meter. The air outlet pipe is provided with a carbon monoxide content analyzer and an oxygen content analyzer. The system does not need to conduct repeated pressurizing and depressurizing on oxygen, the oxygen content in a system pipeline is easy to monitor, safety is high, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of ironmaking, in particular to an oxygen enrichment system in front of a blast furnace. Background technique [0002] In order to increase the output of blast furnace molten iron and reduce the production cost of blast furnaces, most of the large blast furnaces in the world adopt oxygen-enriched smelting technology, which can effectively improve the production efficiency of blast furnaces and reduce the coke ratio. [0003] Oxygen-enriched smelting generally uses low-pressure oxygen from the oxygen tower to be pressurized by a compressor and entered into a spherical tank, decompressed by an oxygen-generating pressure regulating valve group, and then transported to the blast furnace, and then decompressed by a blast furnace pressure regulating valve group and pressurized by a fan The final air is mixed for oxygen enrichment, which consumes a large amount of electric energy in the process of repeated boosting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/00C21B9/00
CPCC21B7/00C21B9/00
Inventor 何益先刘德安江青芳王远征张杰闵荣辉
Owner SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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