CN214032553U - Optimize pulverized coal combustion's blast furnace coal injection device - Google Patents
Optimize pulverized coal combustion's blast furnace coal injection device Download PDFInfo
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- CN214032553U CN214032553U CN202022809515.XU CN202022809515U CN214032553U CN 214032553 U CN214032553 U CN 214032553U CN 202022809515 U CN202022809515 U CN 202022809515U CN 214032553 U CN214032553 U CN 214032553U
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- valve
- coal
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- blast furnace
- pipe
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- 239000003245 coal Substances 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 title claims abstract description 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 239000003054 catalyst Substances 0.000 claims abstract description 44
- 230000001502 supplementing effect Effects 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000571 coke Substances 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 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
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Manufacture Of Iron (AREA)
Abstract
The utility model provides an optimize pulverized coal combustion's blast furnace coal injection device, including the jetting jar, the jetting jar is connected with the air make-up ware through going out the coal pipe, the air make-up ware is equipped with the air make-up mouth for make-up gas and catalyst. The gas can be compressed air or medium-pressure nitrogen, so that smooth injection is guaranteed; the catalyst is brown gas which is not only a clean energy source but also a strong catalyst of a combustion system; the one-time burn-out rate of the pulverized coal at the blast furnace tuyere is improved by utilizing the catalysis and combustion supporting of the brown gas and the self fuel property, so that the coal injection ratio of the blast furnace has a further rising space, and the purposes of coke saving, cost reduction and yield improvement are achieved.
Description
Technical Field
The utility model relates to a buggy system spouts equipment technical field, specifically is an optimize pulverized coal combustion's blast furnace coal injection device.
Background
The blast furnace coal powder injection can reduce coke consumption, and is an important matching process for modern steel smelting. On the premise of energy conservation and consumption reduction, the ratio of iron coal per ton is higher and higher. However, in practical application, when the coal ratio is too high, even if the oxygen enrichment rate is synchronously improved, the primary burnout rate of the pulverized coal at the blast furnace tuyere is still obviously reduced, and one of the important characteristics is that the carbon-containing substance ratio in the coal gas ash is obviously increased. In order to optimize the combustion state of the pulverized coal with high coal ratio, some enterprises adopt a method of adding a solid combustion improver into the pulverized coal, and the limitations mainly comprise poor mixing degree of the combustion improver and the pulverized coal and high cost, particularly, the combustion improver synchronously produced with a pulverizing system cannot adjust the proportion of the combustion improver at any time during injection, so that the further rise space of the large coal ratio is limited.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the technical problem of insufficient combustion of the traditional blast furnace coal powder injection is solved.
The utility model provides an optimize pulverized coal combustion's blast furnace coal injection device, including the jetting jar, the jetting jar is connected with the air make-up ware through going out the coal pipe, the air make-up ware is equipped with the air make-up mouth for make-up gas and catalyst.
The gas can be compressed air or medium-pressure nitrogen, so that smooth injection is guaranteed; the catalyst is brown gas which is not only a clean energy source but also a strong catalyst of a combustion system; the one-time burn-out rate of the pulverized coal at the blast furnace tuyere is improved by utilizing the catalysis and combustion supporting of the brown gas and the self fuel property, so that the coal injection ratio of the blast furnace has a further rising space, and the purposes of coke saving, cost reduction and yield improvement are achieved.
Further, the air supplementing port is connected with an air supplementing pipe, and an air supplementing stop valve and an air supplementing adjusting valve are arranged on the air supplementing pipe. The gas supplementing cut-off valve is used for controlling the on-off of the gas supplementing pipe and is in an open state when coal is normally injected; and the air supply regulating valve is used for regulating the air supply flow, keeping the solid-gas ratio within a set range and regulating the blowing rate.
Further, the air supplementing port is connected with a catalyst pipe, and the catalyst pipe is provided with a first cut-off valve and a second cut-off valve. The first cut-off valve is used for controlling the on-off of the catalyst pipe and is in an open state during normal coal injection; the second cut-off valve is opened and closed by pulse type and is used for adjusting the adding amount of the catalyst; the air supply adjusting valve and the second stop valve are used together, and the solid-gas ratio adjusting efficiency is higher.
Further, the catalyst pipe is connected with a catalyst generator, and the outlet of the catalyst generator is sequentially connected with a pressurizer and a buffer gas tank. The catalyst generator is a brown gas generator, brown gas is stored in the buffer gas tank by the pressurizer, the pressure in the buffer gas tank is kept stable, brown gas is supplemented to the gas supplementing device through the buffer gas tank, and the gas flow is more stable and controllable.
Furthermore, a needle valve is arranged on the catalyst pipe. The needle valve is used to limit the maximum supply flow of the catalyst during commissioning.
Further, a one-way valve is arranged at the outlet of the catalyst pipe. The one-way valve is used for limiting the one-way flow of the catalyst gas and avoiding the catalyst gas from flowing backwards.
Furthermore, a coal outlet valve and an injection valve are arranged on the coal outlet pipe, a cleaning valve is connected between the coal outlet valve and the injection valve, and the cleaning valve is communicated with the pulverized coal bin. In a conventional state, the cleaning valve is in a disconnected state, and the coal outlet valve and the injection valve are in an open state; when the injection is in failure, the injection valve is closed, the cleaning valve is opened, and the pulverized coal is introduced into the pulverized coal bin through the cleaning valve, so that the coal injection device is restored to the initial state, and the maintenance is convenient.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. a blowing tank; 2. a coal outlet pipe; 3. a gas supply device; 4. a gas supplementing pipe; 5. a catalyst tube; 6. a catalyst generator; 7. a press; 8. a buffer gas tank; 9. a needle valve; 10. a one-way valve; 21. a coal outlet valve; 22. a blow valve; 23. cleaning a valve; 31. an air supplement port; 41. a gas supplementing cut-off valve; 42. air supply regulating valve; 51. a first shut-off valve; 52. a second shut-off valve.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in figure 1, the utility model relates to an optimize pulverized coal combustion's blast furnace coal injection device, including jetting jar 1, jetting jar 1 is connected with air make-up ware 3 through coal outlet pipe 2, is equipped with out coal valve 21 and jetting valve 22 on the coal outlet pipe 2, is connected with scavenging valve 23 between coal outlet valve 21 and the jetting valve 22, scavenging valve 23 and pulverized coal storehouse intercommunication. In a normal state, the cleaning valve 23 is in a disconnected state, and the coal outlet valve 21 and the injection valve 22 are in an open state; when the injection is in failure, the injection valve 22 is closed, the cleaning valve 23 is opened, and the pulverized coal is introduced into the pulverized coal bunker through the cleaning valve 23, so that the coal injection device is restored to the initial state, and the maintenance is convenient.
The air supply device 3 is provided with an air supply port 31, and the air supply port 31 is connected with an air supply pipe 4. The air supply pipe 4 is provided with an air supply cut-off valve 41 and an air supply adjusting valve 42. The gas supplementing cut-off valve 41 is used for controlling the on-off of the gas supplementing pipe 4 and is in an open state when coal is normally injected; and the air supply adjusting valve 42 is used for adjusting the air supply flow, keeping the solid-gas ratio within a set range and adjusting the blowing rate. A catalyst pipe 5 is connected between the make-up gas cut-off valve 41 and the make-up gas regulating valve 42, and the catalyst pipe 5 is provided with a first cut-off valve 51 and a second cut-off valve 52. The first cut-off valve 51 is used for controlling the cut-off of the catalyst pipe 5 and is in an open state during normal coal injection; the second cut-off valve 52 is opened and closed in a pulse mode and is used for adjusting the adding amount of the catalyst; the make-up air regulating valve 42 is used together with the second shut-off valve 52 for improving the solid-to-gas ratio regulating efficiency.
The catalyst pipe 5 is connected with a catalyst generator 6, and the outlet of the catalyst generator 6 is sequentially connected with a pressurizer 7 and a buffer gas tank 8. The catalyst generator 6 is a brown gas generator, brown gas is stored in the buffer gas tank 8 by the pressurizer 7, the pressure in the buffer gas tank 8 is kept stable, brown gas is supplemented to the gas supplementing device 3 through the buffer gas tank 8, and the gas flow is more stable and controllable.
The catalyst pipe 5 is provided with a needle valve 9 for limiting the maximum catalyst supply flow during commissioning. The outlet of the catalyst pipe 5 is provided with a one-way valve 10 for limiting the one-way flow of the catalyst gas and avoiding the backflow of the catalyst gas.
The gas can be compressed air or medium-pressure nitrogen, so that smooth injection is guaranteed; the catalyst is brown gas which is not only a clean energy source, but also a strong catalyst of a combustion system; the one-time burn-out rate of the pulverized coal at the blast furnace tuyere is improved by utilizing the catalysis and combustion supporting of the brown gas and the self fuel property, so that the coal injection ratio of the blast furnace has a further rising space, and the purposes of coke saving, cost reduction and yield improvement are achieved.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides an optimize pulverized coal combustion's blast furnace coal injection device which characterized in that: the device comprises an injection tank (1), wherein the injection tank (1) is connected with an air supply device (3) through a coal outlet pipe (2), and the air supply device (3) is provided with an air supply port (31) for supplying air and a catalyst.
2. The blast furnace coal injection device for optimizing pulverized coal combustion as claimed in claim 1, wherein: the air supplementing opening (31) is connected with an air supplementing pipe (4), and an air supplementing stop valve (41) and an air supplementing adjusting valve (42) are arranged on the air supplementing pipe (4).
3. The blast furnace coal injection device for optimizing pulverized coal combustion according to claim 1 or 2, characterized in that: the air supplementing port (31) is connected with a catalyst pipe (5), and the catalyst pipe (5) is provided with a first cut-off valve (51) and a second cut-off valve (52).
4. The blast furnace coal injection device for optimizing pulverized coal combustion as claimed in claim 3, wherein: the catalyst tube (5) is connected with a catalyst generator (6), and the outlet of the catalyst generator (6) is sequentially connected with a pressurizer (7) and a buffer gas tank (8).
5. The blast furnace coal injection device for optimizing pulverized coal combustion as claimed in claim 4, wherein: and a needle valve (9) is arranged on the catalyst pipe (5).
6. The blast furnace coal injection device for optimizing pulverized coal combustion as claimed in claim 5, wherein: and a one-way valve (10) is arranged at the outlet of the catalyst pipe (5).
7. The blast furnace coal injection device for optimizing pulverized coal combustion as claimed in claim 1, wherein: a coal outlet valve (21) and an injection valve (22) are arranged on the coal outlet pipe (2), a cleaning valve (23) is connected between the coal outlet valve (21) and the injection valve (22), and the cleaning valve (23) is communicated with the pulverized coal bunker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809515.XU CN214032553U (en) | 2020-11-27 | 2020-11-27 | Optimize pulverized coal combustion's blast furnace coal injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022809515.XU CN214032553U (en) | 2020-11-27 | 2020-11-27 | Optimize pulverized coal combustion's blast furnace coal injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214032553U true CN214032553U (en) | 2021-08-24 |
Family
ID=77363628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022809515.XU Active CN214032553U (en) | 2020-11-27 | 2020-11-27 | Optimize pulverized coal combustion's blast furnace coal injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214032553U (en) |
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2020
- 2020-11-27 CN CN202022809515.XU patent/CN214032553U/en active Active
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