CN221071554U - Blowing pipe of air supply device special for hydrogen-rich smelting of blast furnace - Google Patents
Blowing pipe of air supply device special for hydrogen-rich smelting of blast furnace Download PDFInfo
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- CN221071554U CN221071554U CN202322201245.8U CN202322201245U CN221071554U CN 221071554 U CN221071554 U CN 221071554U CN 202322201245 U CN202322201245 U CN 202322201245U CN 221071554 U CN221071554 U CN 221071554U
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- hydrogen
- gun
- rifle
- channel
- blast furnace
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 44
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 44
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000003723 Smelting Methods 0.000 title claims abstract description 13
- 238000007664 blowing Methods 0.000 title claims description 8
- 210000001015 abdomen Anatomy 0.000 claims abstract description 22
- 239000003245 coal Substances 0.000 claims abstract description 17
- 239000002817 coal dust Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 abstract description 14
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 4
- 239000006229 carbon black Substances 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model relates to the technical field of blast furnace air supply devices, in particular to a blowpipe of an air supply device special for hydrogen-rich smelting of a blast furnace, which is improved on the existing blowpipe equipment to improve the combustion efficiency; the device comprises a conical belly pipe body, wherein an air duct is formed in the belly pipe body in a penetrating way along the axis of the belly pipe body, a first gun channel and a second gun channel which are connected with the air duct are formed in two sides of the air duct, the first gun channel is internally inserted with a first gun body for spraying hydrogen or coal dust into the air duct, and the second gun channel is internally inserted with a second gun body for spraying hydrogen or coal dust into the air duct; according to the scheme, the angle and the insertion depth of the coal injection gun between the two guns are designed, so that the time of hot air formed after the combustion of the hydrogen-rich gas is increased, the hydrogen-rich gas can be more fully contacted with the hot air and can be subjected to more full mixed combustion, the amount of carbon black generated by cracking the hydrogen-rich gas is further reduced, the air permeability of the blast furnace can be further improved, and the production of the blast furnace is stabilized.
Description
Technical Field
The utility model relates to the technical field of blast furnace air supply devices, in particular to a blowpipe of an air supply device special for hydrogen-rich smelting of a blast furnace.
Background
The blast furnace air supply device is a vital component in the front equipment of the blast furnace, and the straight blow pipe is provided with a coal injection system-a coal injection gun for improving the yield and reducing the coke consumption, so that the energy efficiency is low due to the combustion of pure pulverized coal. The hydrogen energy gradually becomes the driving force for global energy technical innovation and industrial revolution due to the characteristics of low carbon, high reduction speed, wide sources and safety and controllability. The hydrogen energy is renewable energy, has no pollution emission and has very broad application prospect.
The hydrogen metallurgy process is an ideal green metallurgy mode, and generally refers to a non-blast furnace ironmaking process mainly represented by direct reduction of a gas-based shaft furnace for producing DRI by reducing iron ore under the condition that the hydrogen content of reducing gas fed into the furnace is more than 55 percent. The development of hydrogen metallurgy process is a necessary trend of the process selection of emission reduction CO2 in the 21 st century steel industry, and the steel productivity of China is half of the world, so that the demand for hydrogen metallurgy is more urgent. Hydrogen metallurgy is an important direction of low-carbon development and energy resource transformation, and is also an important way for green low-carbon and high-quality development in the steel industry.
The belly pipe is a key component of the whole air supply device, has severe environment and high requirement, and is specially designed for hydrogen-rich smelting of the blast furnace, and coal and hydrogen are sprayed into the blast furnace by double guns at the same time, so that the combustion efficiency is improved.
Disclosure of utility model
Based on the expression, the utility model provides the blowpipe of the air supply device special for the blast furnace hydrogen-rich smelting, which is improved on the existing blowpipe equipment so as to improve the combustion efficiency.
The technical scheme for solving the technical problems is as follows:
The utility model provides a special air supply arrangement belly pipe of blast furnace hydrogen-rich smelting, includes conical belly pipe body, the wind channel has been seted up in the belly pipe body run through along its axis, the first rifle way and the second rifle way of even air flue have been seted up to the both sides in wind channel, first rifle is said and is inserted first rifle body and spray into hydrogen or buggy in the wind channel, second rifle is said and is inserted second rifle body and spray into hydrogen or buggy in the wind channel.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the first gun channel blows hydrogen into the air channel, and the second gun channel is inserted with a coal injection cavity to blow coal dust into the air channel.
Further, the intersection point of the axis extension line of the first gun channel and the axis of the air channel is A, the intersection point of the axis extension line of the second gun channel and the axis of the air channel is B, and the A is farther from the inlet end of the belly pipe body than the B.
Further, the first gun channel is larger than the insertion depth of the second gun channel.
Further, the included angle alpha between the first gun channel and the axis of the belly pipe body and the included angle alpha between the second gun channel and the axis of the belly pipe body are 20-24 degrees.
Further, the axis of the belly pipe body is used as the circle center, and the included angle beta between the connecting line of the first gun channel and the circle center and the connecting line of the second gun channel and the circle center is 90-180 degrees.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
According to the scheme, the angle and the insertion depth of the coal injection gun between the two guns are designed, so that the time of hot air formed after the combustion of the hydrogen-rich gas is increased, the hydrogen-rich gas can be more fully contacted with the hot air and can be subjected to more full mixed combustion, the amount of carbon black generated by cracking the hydrogen-rich gas is further reduced, the air permeability of the blast furnace can be further improved, and the production of the blast furnace is stabilized.
Drawings
FIG. 1 is a cross-sectional view of the internal structure of a blowpipe of a special air supply device for blast furnace hydrogen-rich smelting, which is provided by the utility model, from a top view perspective;
FIG. 2 is a left side view of the overall structure of the present utility model;
Fig. 3 is an enlarged view of the area C in fig. 1.
In the drawings, the list of components represented by the various numbers is as follows:
1. A belly pipe body; 2. an air duct; 3. a first gun path; 4. a second gun path; 5. a first gun body; 6. and a second gun body.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be appreciated that spatially relative terms such as "under …," "under …," "under …," "over …," "over" and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below …" and "under …" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. In the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", and the like, if the connected circuits, modules, units, and the like have electrical or data transferred therebetween.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
The blowing pipe of the blowing device special for the blast furnace hydrogen-rich smelting shown in fig. 1 and 2 comprises a conical blowing pipe body 1, an air channel 2 is arranged in the blowing pipe body 1 in a penetrating way along the axis of the blowing pipe body, a first gun channel 3 and a second gun channel 4 which are connected with the air channel 2 are arranged on two sides of the air channel 2, a first gun body 5 is inserted into the first gun channel 3, hydrogen or coal dust is sprayed into the air channel 2, and a second gun body 6 is inserted into the second gun channel 4, hydrogen or coal dust is sprayed into the air channel 2.
The two gun passages have the function of simultaneously spraying coal and hydrogen, can further improve the coal spraying amount or the pulverized coal combustion rate, and have the characteristics of saving coke of a blast furnace, reducing consumption, reducing production cost and improving environment. The front ends of the central lines of the first gun channel 3 and the second gun channel 4 are staggered and intersected with the central line of the belly pipe body 1, the included angle alpha between the first gun channel 3 and/or the second gun channel 4 and the axis of the belly pipe body 1 is 20-24 degrees, the axis of the belly pipe body 1 is taken as the center of a circle, and the included angle beta between the connecting line of the first gun channel 3 and the second gun channel 4 and the center of the circle is 90-180 degrees, so that the belly pipe has the requirements of being capable of adapting to blast furnaces of different models and different capacities.
In one embodiment, the first gun channel 3 blows hydrogen into the air channel 2, and the second gun channel 4 is inserted with a coal injection cavity to blow coal dust into the air channel 2. Accordingly, the first gun path 3 is larger than the insertion depth of the second gun path 4. As shown in fig. 3, the intersection point of the axis extension line of the first gun channel 3 and the axis of the air channel 2 is a, the intersection point of the axis extension line of the second gun channel 4 and the axis of the air channel 2 is B, and the a is farther from the inlet end of the belly pipe body 1 than the B, i.e. the position of the hydrogen sprayed into the air channel 2 is more backward than the pulverized coal.
The angle and the insertion depth of the coal injection gun between the two guns are designed to increase the time of hot air formed after the hydrogen-rich gas is combusted to contact coal dust, so that the hydrogen-rich gas can be more fully contacted with the hot air and can be fully mixed and combusted, the amount of carbon black generated by cracking the hydrogen-rich gas is further reduced, the air permeability of the blast furnace can be further improved, and the production of the blast furnace is stabilized. The high-temperature oxygen-containing gas generated after the hydrogen-rich gas is fully combusted with hot air has the temperature higher than that of the hot air and contacts with the injected pulverized coal, so that the ignition and combustion of the pulverized coal are easier to promote, the combustion rate of the injected fuel can be further improved by setting the outlet angle of the hydrogen-rich gas and the pulverized coal, and the smelting condition of the blast furnace is improved.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (3)
1. The utility model provides a special air supply arrangement belly pipe of blast furnace hydrogen-rich smelting, its characterized in that includes conical belly pipe body, the belly pipe body runs through along its axis and has seted up the wind channel, the first rifle way and the second rifle way of even air flue have been seted up to the both sides in wind channel, first rifle is said and is inserted the first rifle body that spouts hydrogen or buggy in the wind channel, second rifle is said and is inserted the second rifle body that spouts hydrogen or buggy in the wind channel, first rifle way and or second rifle way is 20 ~ 24 with the axis contained angle alpha of belly pipe body, regard the axis of belly pipe body as the centre of a circle, the contained angle beta of first rifle way and second rifle way and centre of a circle line is 90 ~ 180, first rifle way is greater than the depth of insertion of second rifle way.
2. The blowpipe of the air supply device special for the hydrogen-rich smelting of the blast furnace according to claim 1, wherein the first gun passage blows hydrogen into the air duct, and the second gun passage is internally inserted with a coal injection cavity for blowing coal dust into the air duct.
3. The blowpipe of the air supply device special for the hydrogen-rich smelting of the blast furnace according to claim 2, wherein an intersection point of an axis extension line of the first gun channel and an axis of the air channel is A, an intersection point of an axis extension line of the second gun channel and an axis of the air channel is B, and the A is farther from an inlet end of the blowpipe body than the B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322201245.8U CN221071554U (en) | 2023-08-15 | 2023-08-15 | Blowing pipe of air supply device special for hydrogen-rich smelting of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322201245.8U CN221071554U (en) | 2023-08-15 | 2023-08-15 | Blowing pipe of air supply device special for hydrogen-rich smelting of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221071554U true CN221071554U (en) | 2024-06-04 |
Family
ID=91264792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322201245.8U Active CN221071554U (en) | 2023-08-15 | 2023-08-15 | Blowing pipe of air supply device special for hydrogen-rich smelting of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221071554U (en) |
-
2023
- 2023-08-15 CN CN202322201245.8U patent/CN221071554U/en active Active
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