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Method for increasing the penetration depth of an oxygen beam

A technology of oxygen and oxygen nozzles, which is applied in lighting and heating equipment, furnaces, electric charge manipulation, etc., can solve the problems of low gas permeability, etc., and achieve the effects of reducing clogging, high volume flow, and reducing pressure loss

Inactive Publication Date: 2019-02-22
PRIMETALS TECH AUSTRIA GMBH
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  • Description
  • Claims
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Problems solved by technology

In the case of a blast furnace operated with oxygen, in order to obtain the penetration depths that occur in a blast furnace of the same power operated with hot blast, it is necessary to increase the velocity of oxygen in comparison with the velocity of the hot blast - but this may lead, as mentioned above, due to Increased mechanical damage to the coke in the blast furnace due to impulse transfer and correspondingly lower gas permeability of the solid bed in the blast furnace due to particle formation

Method used

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  • Method for increasing the penetration depth of an oxygen beam
  • Method for increasing the penetration depth of an oxygen beam
  • Method for increasing the penetration depth of an oxygen beam

Examples

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[0068] figure 1 An example is shown in which the penetration depth of the oxygen jet increases when the ratio of the volume flow to the mass flow of the oxygen jet increases. The mass flow is constant. figure 1 As an example it is shown that at a ratio of volume flow to approximately 90% of mass flow from approximately 0.22m 3 / kg increases to about 0.42m 3 / kg increases the penetration depth of the oxygen beam by approximately 15%. This applies to the two flow velocities shown.

[0069] figure 2 An example is also shown in which the penetration depth of the oxygen jets into the packed bed of the melter-gasifier increases when the ratio of the volume flow to the mass flow of the oxygen jets increases. The mass flow of the oxygen jet remains constant. In order to keep the flow velocity constant when the temperature of the oxygen jet is increased, larger oxygen nozzle diameters (abbreviated in the figures as nozzle diameters) are used at higher temperatures. Depend on ...

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Abstract

The invention relates to a method for increasing the penetration depth of an oxygen jet of technically pure oxygen entering a pig iron production plant, preferably a smelter-reduction plant / melter-gasifier or a blower with a volume flow rate and a mass flow rate. In a packed bed of an oxygen blast furnace for gasifying carbon supports present in the packed bed, characterized in that the ratio of the volume flow to the mass flow of the oxygen jet is increased.

Description

technical field [0001] The invention relates to a method for increasing the penetration depth of an oxygen jet of technically pure oxygen, which enters a packed bed (Schüttung) of a pig iron production plant with a volume flow rate and a mass flow rate for gasification Carbon support present in a packed bed. Background technique [0002] During the production of pig iron in pig iron production plants such as blast furnaces or smelter-gasifiers such as the melter-gasifiers used in the processes COREX® or FINEX®, by gasification of carbon carriers by blowing hot air or oxygen jets A reducing gas is obtained. The oxidized siderophores are reduced by means of this reducing gas and the resulting reduced material is subsequently melted into pig iron. [0003] In the melter-gasifiers used in the COREX® and FINEX® methods, oxygen nozzles are installed around the melter-gasifier between the hearth and the carbon bed of the melter-gasifier to convert the carbon used for gasification...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00C21B7/16C21B13/00F27D3/16F27D3/18
CPCC21B5/00C21B5/001C21B5/003C21B7/16C21B13/00F27B1/10F27D3/16C21B3/00
Inventor L.W.科普林格J.L.申克R.米尔纳J-F.普劳尔K.韦德J.武尔姆
Owner PRIMETALS TECH AUSTRIA GMBH
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