Apparatus and method for collecting dust of reducing gas

A technology for manufacturing equipment and gas dust removal, which is applied in the field of molten iron manufacturing, can solve the problems of clogging of nozzles of distribution plates, unstable operation of fluidized bed reduction furnaces, clogging of nozzles of distribution plates, etc., so as to reduce costs, reduce equipment construction costs, and improve The effect of competitiveness

Inactive Publication Date: 2015-05-13
POHANG IRON & STEEL CO LTD
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  • Abstract
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Problems solved by technology

[0005] However, in the past, during operation, there was a problem that the distribution plate nozzles in the fluidized bed reduction furnace were clogged by the reducing gas supplied to the fluidized bed reduction furnace
[0006] That is to say, the reducing gas produced in the melter-gasifier contains dust, and if too much dust flows into the fluidized bed reduction furnace together with the reducing gas, the nozzles of the distribution plate will frequently be blocked by dust. Accidents, so the problem of unstable operation of the fluidized bed reduction furnace will occur

Method used

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  • Apparatus and method for collecting dust of reducing gas
  • Apparatus and method for collecting dust of reducing gas
  • Apparatus and method for collecting dust of reducing gas

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Embodiment Construction

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement them. Those skilled in the art should understand that the following embodiments can be modified into various forms without departing from the concept and scope of the present invention. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0024] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms are also intended to include the plural unless the context clearly dictates otherwise. It should also be understood that the terms "comprising" and "comprising" do not specifically refer to certain characteristics, fields, integers, steps, actions, elements and / or components, but exclude other characteristics, fie...

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Abstract

The invention provides an apparatus and method for collecting dust of reducing gas, so as to properly remove the dust in the reducing gas supplied to a reducing furnace of a fluidized bed. Moreover, the apparatus can employ conventional equipment to remove dust in the reducing gas. The method comprises the following steps: carrying out the reduction of ore fines through a plurality of reducing furnaces arranged in a multistage manner, enabling reduced iron to be melted in a melting gasifier for molten iron manufacture, and removing dust from the reducing gas which is generated from the melting gasifier and supplied to the reducing furnaces.

Description

technical field [0001] The present invention relates to technology for manufacturing molten iron, and more particularly, the present invention relates to a reducing gas dedusting device for a molten iron manufacturing facility that pretreats reducing gas supplied from a melting furnace to a fluidized bed reduction furnace to remove dust, and dust removal thereof method. Background technique [0002] In the smelting reduction ironmaking method, a reduction furnace for reducing iron ore and a melter-gasifier for melting the reduced iron ore are used. When melting iron ore in the melter-gasifier, coal briquettes are charged into the melter-gasifier as a heat source for melting the iron ore. After the reduced iron is melted in the melter-gasifier, it is converted into molten iron and slag and discharged outside. The coal briquettes charged to the melter-gasifier form a packed bed of coal. [0003] Oxygen is blown in through the tuyeres provided in the melter-gasifier to burn ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B13/00
CPCC21B13/00F27B15/12F27D17/00
Inventor 郑载勋金东珍金度昇
Owner POHANG IRON & STEEL CO LTD
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