CN219032230U - Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace - Google Patents

Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace Download PDF

Info

Publication number
CN219032230U
CN219032230U CN202223188742.0U CN202223188742U CN219032230U CN 219032230 U CN219032230 U CN 219032230U CN 202223188742 U CN202223188742 U CN 202223188742U CN 219032230 U CN219032230 U CN 219032230U
Authority
CN
China
Prior art keywords
pipe body
layer pipe
spray gun
middle layer
hydrogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202223188742.0U
Other languages
Chinese (zh)
Inventor
蒋胜
陈茅
唐文博
朱凤湘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Original Assignee
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd filed Critical Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority to CN202223188742.0U priority Critical patent/CN219032230U/en
Application granted granted Critical
Publication of CN219032230U publication Critical patent/CN219032230U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model relates to a spray gun for smelting and spraying hydrogen-rich fuel in a vanadium titano-magnetite blast furnace, which comprises a spray gun body, wherein the spray gun body consists of an outer layer pipe body, a middle layer pipe body and an inner layer pipe body; the middle layer pipe body is coaxially arranged in the outer layer pipe body at a certain distance; the inner layer pipe body is coaxially arranged in the middle layer pipe body at a certain distance; the inner wall of the front end of the outer layer pipe body is fixedly connected with the outer wall of the front end of the middle layer pipe body through structural rib blocks uniformly distributed in the circumferential direction; the inner wall of the front end of the middle layer pipe body is fixedly connected with the outer wall of the front end of the inner layer pipe body through structural rib blocks uniformly distributed in the circumferential direction. The utility model can fully mix coal powder to improve the combustion rate of the coal powder under the hydrogen-rich condition.

Description

Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace
Technical Field
The utility model relates to the technical field of ferrous metallurgy, in particular to a spray gun for blowing hydrogen-rich fuel in the blast furnace smelting of vanadium titano-magnetite.
Background
In the smelting process of the blast furnace, coal dust injection is favorable for reducing the coke ratio and the smelting cost, is a wider measure for saving energy and reducing consumption, along with the implementation of CO2 emission reduction in China, the injection of hydrogen-rich gas into the blast furnace becomes one of effective means for reducing CO2 emission, after the injection of the hydrogen-rich gas into the blast furnace, the temperature of a revolving region of a hearth tuyere is reduced, a certain amount of oxygen is required to be supplemented to compensate the reduction of the theoretical combustion temperature of the revolving region, along with the increase of the hydrogen-rich gas, the combustion rate of coal dust is influenced to a certain extent, the combustion rate of the coal dust is directly influenced by the improvement of the coal ratio and the replacement ratio of the coke, and particularly in the smelting process of vanadium-titanium magnetite, the combustion rate is low, unburned coal dust enters slag, and adverse influence is directly generated on the performance of the slag, so that the smelting of the blast furnace is not smooth. Therefore, how to increase the combustion rate of pulverized coal is important when the blast furnace is injecting hydrogen-rich gas.
Disclosure of Invention
The utility model aims to provide a spray gun for smelting and spraying hydrogen-rich fuel in a vanadium titano-magnetite blast furnace, which can effectively improve the combustion rate of coal dust so as to improve the combustion rate of the coal dust under the hydrogen-rich condition.
The technical scheme adopted by the utility model is as follows:
the utility model provides a spray gun for smelting and spraying hydrogen-rich fuel in a vanadium titano-magnetite blast furnace, which comprises a spray gun body, wherein the spray gun body consists of an outer layer pipe body, a middle layer pipe body and an inner layer pipe body; the middle layer pipe body is coaxially arranged in the outer layer pipe body at a certain distance; the inner layer pipe body is coaxially arranged in the middle layer pipe body at a certain distance; the inner wall of the front end of the outer layer pipe body is fixedly connected with the outer wall of the front end of the middle layer pipe body through structural rib blocks uniformly distributed in the circumferential direction; the inner wall of the front end of the middle layer pipe body is fixedly connected with the outer wall of the front end of the inner layer pipe body through structural rib blocks uniformly distributed in the circumferential direction.
Preferably, the structural rib blocks are inverted triangle rib blocks; the vertex of the inverted triangle rib block points to the direction opposite to the flow direction of the pulverized coal and the hydrogen-rich gas.
Preferably, four structural rib blocks are uniformly distributed between the front ends of the outer layer pipe body and the middle layer pipe body in the circumferential direction; three structural rib blocks are uniformly distributed between the front ends of the middle layer pipe body and the inner layer pipe body in the circumferential direction.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model relates to an inner layer pipe body O 2 The cavity between the inner layer pipe body and the middle layer pipe body is used for conveying coal dust, the cavity between the outer layer pipe body and the middle layer pipe body is used for conveying hydrogen-rich gas, the problem of insufficient coal dust combustion rate can be solved, oxygen is conveyed through the inner layer pipe body, as the oxygen outlet speed is higher than the wind speed outside the pipe, after oxygen is sprayed out of a muzzle, the coal dust conveyed out of the cavity between the inner layer pipe body and the middle layer pipe body is dispersed, contact with oxygen is enlarged, coal dust and oxygen are fully mixed and combusted, coal dust combustion is more sufficient, and the hydrogen-rich gas of the cavity between the outer layer pipe body and the middle layer pipe body is also beneficial to coal dust diffusion. Meanwhile, the problems of insufficient and uneven coal powder combustion when one gun sprays hydrogen-rich gas are solved.
Drawings
FIG. 1 is a schematic view of an axial cross-sectional structure of the present utility model;
FIG. 2 is a schematic view of a radial cross-sectional structure of the present utility model;
fig. 3 is a schematic view of A-A of fig. 2.
Wherein, the reference numerals: 1-an outer layer tube; 2-middle layer pipe body; 3-inner layer tube body; 4-structural rib blocks.
Detailed Description
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
In the description of the present utility model, it should be noted that the terms "upper," "lower," "top," "bottom," "one side," "another side," "left," "right," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not mean that the device or element must have a specific orientation, be configured and operate in a specific orientation.
Referring to fig. 1, a specific structure of an embodiment of a spray gun for smelting and spraying hydrogen-rich fuel in a vanadium titano-magnetite blast furnace is provided. The spray gun comprises a spray gun body, wherein the spray gun body is formed by sequentially nesting an outer layer pipe body 1, a middle layer pipe body 2 and an inner layer pipe body 3; the middle layer pipe body 2 is coaxially arranged in the outer layer pipe body 1 at a certain distance; the inner layer pipe body 3 is coaxially arranged in the middle layer pipe body 2 at a certain distance; the inner wall of the front end of the outer layer pipe body 1 is fixedly connected with the outer wall of the front end of the middle layer pipe body 2 through structural rib blocks 4 uniformly distributed in the circumferential direction, in the embodiment, the number of the structural rib blocks 4 between the outer layer pipe body 1 and the middle layer pipe body 2 is four, and the four structural rib blocks 4 form included angles of 90 degrees respectively; the inner wall of middle level body 2 front end links firmly through the structure muscle piece 4 of circumference equipartition equally between the outer wall of inlayer body 3 front end, and in this embodiment, the quantity of structure muscle piece 4 between middle level body and the inlayer body is three, is 120 contained angles between three structure muscle piece 4 respectively.
In this embodiment, the structural rib block 4 is an inverted triangle rib block with isosceles shape, and the vertex angle points of the inverted triangle rib block point to the direction opposite to the flow direction of the pulverized coal and the hydrogen-rich gas.
Wherein, during operation, the utility model leads O to the inner layer pipe body 3 2 The cavity between the inner layer pipe body 3 and the middle layer pipe body 2 is used for conveying pulverized coal, the cavity between the outer layer pipe body and the middle layer pipe body is used for conveying hydrogen-rich gas, the problem of insufficient pulverized coal combustion rate can be effectively solved, oxygen-rich gas is conveyed through the inner layer pipe body 3, and the oxygen outlet speed is higher than that of the outside of the pipeThe air speed is so that the coal powder conveyed by the cavity between the inner layer pipe body 3 and the middle layer pipe body 2 is dispersed after the oxygen is sprayed out of the muzzle, the contact area between the coal powder and the oxygen is enlarged, the coal powder and the oxygen are fully mixed, the combustion of the coal powder is more sufficient, and the hydrogen-rich gas conveyed by the cavity between the outer layer pipe body 1 and the middle layer pipe body 2 is also beneficial to the diffusion of the coal powder. Meanwhile, the problems of insufficient and uneven coal powder combustion when one gun sprays hydrogen-rich gas are solved.
The utility model is not particularly limited to the known technology.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims (3)

1. The utility model provides a spray gun of blowing hydrogen-rich fuel is smelted to vanadium titano-magnetite blast furnace, includes the spray gun body, its characterized in that: the spray gun body consists of an outer layer pipe body, a middle layer pipe body and an inner layer pipe body; the middle layer pipe body is coaxially arranged in the outer layer pipe body at a certain distance; the inner layer pipe body is coaxially arranged in the middle layer pipe body at a certain distance; the inner wall of the front end of the outer layer pipe body is fixedly connected with the outer wall of the front end of the middle layer pipe body through structural rib blocks uniformly distributed in the circumferential direction; the inner wall of the front end of the middle layer pipe body is fixedly connected with the outer wall of the front end of the inner layer pipe body through structural rib blocks uniformly distributed in the circumferential direction.
2. The spray gun for smelting and spraying hydrogen-rich fuel in a vanadium titano-magnetite blast furnace according to claim 1, wherein the spray gun is characterized in that: the structural rib blocks are inverted triangle rib blocks; the vertex of the inverted triangle rib block points to the direction opposite to the flow direction of the pulverized coal and the hydrogen-rich gas.
3. The spray gun for smelting and spraying hydrogen-rich fuel in a vanadium titano-magnetite blast furnace according to claim 2, which is characterized in that: four structural rib blocks are uniformly distributed between the front ends of the outer layer pipe body and the middle layer pipe body in the circumferential direction; three structural rib blocks are uniformly distributed between the front ends of the middle layer pipe body and the inner layer pipe body in the circumferential direction.
CN202223188742.0U 2022-11-29 2022-11-29 Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace Active CN219032230U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223188742.0U CN219032230U (en) 2022-11-29 2022-11-29 Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223188742.0U CN219032230U (en) 2022-11-29 2022-11-29 Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace

Publications (1)

Publication Number Publication Date
CN219032230U true CN219032230U (en) 2023-05-16

Family

ID=86284765

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223188742.0U Active CN219032230U (en) 2022-11-29 2022-11-29 Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace

Country Status (1)

Country Link
CN (1) CN219032230U (en)

Similar Documents

Publication Publication Date Title
CN106051769B (en) A kind of new and effective ultra-low nitrogen volumetric combustion device
CN101319787A (en) Coal powder lance for blast furnace
CN208260527U (en) One kind being used for SNCR denitration Double layer high efficient atomizing lance
CN219032230U (en) Spray gun for smelting and spraying hydrogen-rich fuel in vanadium titano-magnetite blast furnace
CN112322814B (en) System and method for blowing hydrogen-containing gas into blast furnace
CN101929674A (en) Burner for main burning furnace of sulfur recovery unit
CN216786172U (en) Composite fuel spray gun for iron making
CN202465742U (en) Cavity type blast furnace ironmaking device
CN108220515B (en) A kind of vertical two-part pulverized coal injection in blast furnace method
CN201250239Y (en) Blast furnace coal injection gun
CN110396572A (en) A kind of the dephosphorization of molten iron device and dephosphorization method of smelting stainless steel
CN217459482U (en) Flash is smelted and is used improved blast furnace
CN102605120B (en) Cavity type blast furnace iron-smelting device and method
CN214307102U (en) Special dense-dilute combustion low-emission natural gas combustor for asphalt stirring equipment
CN213208603U (en) Rotary kiln head sealing device
CN201250242Y (en) Non-blast furnace ironmaking furnace
CN108265146B (en) The vertical apparatus of gas fluid distrbution in a kind of improvement blast furnace
CN107326144B (en) Two-section type single-channel melting bath smelting oxygen lance
CN207159255U (en) A kind of blast-furnace coal powder shower nozzle
CN111454004A (en) Double-chamber lime kiln
CN221051903U (en) Coal gas and coal dust multi-channel air supply device
CN201028509Y (en) Blast furnace supercharging abrasion-proof coal powder injector
CN220183322U (en) Converter bottom blowing component
CN111074025A (en) Method for determining blast air volume of blast furnace
CN106051755B (en) Flue gas purification device and the circulating fluidized bed boiler for being equipped with the device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant