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Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same

A technology of molten iron and equipment, applied in lighting and heating equipment, reducing gas emissions, furnace components, etc., can solve problems such as serious environmental pollution, difficulty in furnace-gasifier activities, and failure to reduce iron ore to make contributions

Active Publication Date: 2010-11-17
浦项股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the blast furnace smelting method, there is a problem that an auxiliary device is required to manufacture coke and sinter, and due to the auxiliary device, environmental pollution is very serious
However, controlling the activity in the furnace-gasifier is difficult due to the wide variety of parameters
For example, there is a problem that some of the carbon contained in lump coal and coal briquettes is oxidized to carbon dioxide and the like and thus cannot contribute to the reduction of iron ore

Method used

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  • Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same
  • Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same
  • Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same

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Embodiment Construction

[0023] best practice

[0024] In order for those of ordinary skill in the art to be able to implement the present invention, reference will be made to Figures 1 to 4 Embodiments of the present invention will be described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Wherever possible, the same reference numerals will be used throughout the drawings for the same or like parts.

[0025] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should be further understood that terms, such as terms defined in commonly used dictionaries, etc., should be interpreted to have meanings consistent with their meanings in the relevant art and within the scope of this disclosure,...

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Abstract

The present invention relates to a method for manufacturing molten iron by injecting a hydrocarbon gas and an apparatus for manufacturing molten iron using the same. A method for manufacturing molten iron according to an embodiment of the present invention includes: i) converting iron ore into reduced materials while passing the iron ore through a reduction reactor, ii) charging lumped carbonaceous materials into a melter-gasifier connected to the reduction reactor and forming a coal-packed bed in the melter-gasifier, iii) charging the reduced materials into the melter-gasifier connected to the reduction reactor, injecting oxygen, vapor, and hydrocarbon gas together into a lower portion of the coal-packed bed and manufacturing molten iron, and iv) supplying a reducing gas discharged from the melter-gasifier to the reduction reactor. The vapor is injected to prevent the oxygen and the hydrocarbon gas from contacting each other in the manufacturing of molten iron.

Description

technical field [0001] The present invention relates to a method for producing molten iron by injecting hydrocarbon gas and an apparatus for producing molten iron using the method, and more particularly, to injecting hydrocarbon gas by injecting hydrocarbon gas into a melter-gasifier to ensure sufficient gas for melting reduced iron A heat source and a method of producing molten iron for generating high-quality reducing gas and equipment for producing molten iron using the method. Background technique [0002] The steel industry is one of the core industries, providing the basic materials needed to build and manufacture cars, ships, household appliances, and many other products used by humans. It is also one of the oldest industries developed together with human beings. Iron foundries play a key role in the steel industry where iron ore and coal are used as raw materials to produce molten iron (ie pig iron in a molten state) from which steel is produced which is then suppli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B13/00
CPCC21B13/143F27D3/16C21B7/163C21B13/002C21B13/0073Y02P10/134C21B11/00C21B13/00
Inventor 崔应洙裴辰灿李云宰
Owner 浦项股份有限公司
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