CN204039426U - A kind of blast furnace oxygen-enriched injection Sweet natural gas air port - Google Patents
A kind of blast furnace oxygen-enriched injection Sweet natural gas air port Download PDFInfo
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- CN204039426U CN204039426U CN201420393478.0U CN201420393478U CN204039426U CN 204039426 U CN204039426 U CN 204039426U CN 201420393478 U CN201420393478 U CN 201420393478U CN 204039426 U CN204039426 U CN 204039426U
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- air port
- natural gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a kind of blast furnace oxygen-enriched injection Sweet natural gas air port, comprising: housing, air port ante-chamber, air port back cavity, dividing plate, Sweet natural gas passage and oxygen channel; Housing entirety is in hollow cone; Enclosure interior is enclosed space; Enclosed space is separated into air port back cavity and air port ante-chamber by dividing plate; Air port ante-chamber is positioned at the small end of hollow cone; Air port back cavity is positioned at the large end of hollow cone; Sweet natural gas passage and oxygen channel run through air port back cavity and air port ante-chamber; Sweet natural gas passage and oxygen channel are symmetrical arranged about the central shaft of housing.This Sweet natural gas air port can ensure to spray into the Sweet natural gas in stove under the condition of oxygen enrichment, combining combustion fully mixed with air blast, avoids Sweet natural gas pyrolysis to form carbon black, can save energy and reduce the cost simultaneously, control CO
2discharge.
Description
Technical field
The utility model relates to technical field of blast furnace ironmaking, particularly a kind of blast furnace oxygen-enriched injection Sweet natural gas air port.
Background technology
Blast furnace blowing Sweet natural gas is a not only energy-conservation but also Technology for environmental protection, can realize reducing blast furnace fuel ratio, reduce CO
2the target of discharge.Sweet natural gas sprays into after in stove, and methane and other hydro carbons can change CO and H into
2, add H in bosh coal gas
2content, reduces density and the viscosity of coal gas in stove, greatly reduces pressure drop in furnace, be conducive to the stable smooth operation of blast furnace.Meanwhile, improve the rate of heat exchange between coal gas and furnace charge, be conducive to the development of indirect reduction, blast furnace ironmaking fuel consumption can be reduced.But the hydrocarbon polymer in Sweet natural gas only, at the temperature of thermolysis, could start remarkable reaction occurs with oxygen.The result of reaction obtains, containing pyrotechnics flame, finally forming carbon black.Carbon black is mixed in slag, and slag viscosity can be caused to raise, and closely affects smooth operation of furnace.
Existing Sweet natural gas blowing device cannot ensure to spray into the Sweet natural gas in stove under the condition of oxygen enrichment, and combining combustion fully mixed with air blast, suppresses the formation of carbon black.
Utility model content
For solving the problem, the utility model provides a kind of can guarantee spray into the Sweet natural gas in stove under the condition of oxygen enrichment, combining combustion fully mixed with air blast, avoids Sweet natural gas pyrolysis to form carbon black, can save energy and reduce the cost simultaneously, control CO
2the blast furnace oxygen-enriched injection Sweet natural gas air port of discharge.
A kind of blast furnace oxygen-enriched injection Sweet natural gas air port that the utility model provides, comprising:
Housing, air port ante-chamber, air port back cavity, dividing plate, for the Sweet natural gas passage of transport gas and the oxygen channel for delivering oxygen;
Described housing entirety is in hollow cone;
Described enclosure interior is enclosed space; Described enclosed space is separated into described air port back cavity and air port ante-chamber by described dividing plate; Described air port ante-chamber is positioned at the small end of described hollow cone; Described air port back cavity is positioned at the large end of described hollow cone;
Described Sweet natural gas passage and oxygen channel run through described air port back cavity and air port ante-chamber; Described Sweet natural gas passage and oxygen channel are symmetrical arranged about the central shaft of described housing.
As preferably, described Sweet natural gas air port also comprises:
Back cavity water entry, back cavity water exit, ante-chamber water entry and ante-chamber water exit;
Described back cavity water entry and back cavity water exit are communicated with described air port back cavity;
Described ante-chamber water entry and ante-chamber water exit are communicated with described air port ante-chamber through described air port back cavity.
As preferably, described Sweet natural gas passage comprises: first channel main body and the first spiral high temperature nozzle;
The bottom of described first spiral high temperature nozzle is communicated with described first channel main body; Described air port ante-chamber offers the first hole; Described first spiral high temperature nozzle is located on described first hole; The jet hole of described first spiral high temperature nozzle is communicated with the described housing external world.
As preferably, described first spiral high temperature nozzle is 0 ~ 60mm apart from the scope of the end face of described housing small end; Described first spiral high temperature nozzle and described casing center axle are the angle of 30 ° ~ 85 °;
Described first spiral high temperature nozzle inwall is arranged in shape of threads.
As preferably, described oxygen channel comprises: second passage main body and the second spiral high temperature nozzle;
The bottom of described second spiral high temperature nozzle is communicated with described second passage main body; Described air port ante-chamber offers the second hole; Described second spiral high temperature nozzle is located on described second hole; The jet hole of described second spiral high temperature nozzle is communicated with the described housing external world.
As preferably, described second spiral high temperature nozzle is 0 ~ 60mm apart from the scope of the end face of described housing small end; Described second spiral high temperature nozzle and described casing center axle are the angle of 30 ° ~ 85 °;
Described second spiral high temperature nozzle inwall is arranged in shape of threads.
As preferably, the end face of described housing small end stretches into high furnace interior 300 ~ 700mm.
As preferably, described Sweet natural gas air port also comprises:
Traverse baffle;
It is inner that traverse baffle described in polylith is arranged on described air port ante-chamber; Before described traverse baffle and described air port, cavity wall is connected; Described traverse baffle can change the runner of the cooling fluid passed in the ante-chamber of described air port.
As preferably, described housing adopts highly purified casting in bronze to make and forms; The back perimeter face of described housing and the end face of housing small end arrange Al-base ceramic coating.
A kind of blast furnace oxygen-enriched injection Sweet natural gas air port that the utility model provides is by arranging Sweet natural gas passage and oxygen channel makes Sweet natural gas spray into high furnace interior by Sweet natural gas passage, oxygen sprays into high furnace interior by oxygen channel simultaneously, ensure that spray into the Sweet natural gas in blast furnace burns under the condition of oxygen enrichment, suppress the formation of carbon black, and then avoid carbon black to be mixed in slag, cause slag viscosity to raise, affect smooth operation of furnace.By Sweet natural gas passage and the oxygen channel central shaft about housing is symmetrical arranged, the Sweet natural gas that sprays into and oxygen fully can be mixed with the hot blast blasted, ensure the gas mixture physical efficiency Thorough combustion entering blast furnace further from inlet front end.By arranging air port ante-chamber and the airtight separate space of air port back cavity these two, different heat-eliminating mediums is passed into respectively to air port ante-chamber and air port back cavity, avoid this Sweet natural gas air port Yin Wendu too high and be out of shape or break, and then reduce the spoilage in Sweet natural gas air port, improve supply opening model, reduce ironmaking cost.
Accompanying drawing explanation
Fig. 1 is the section knot figure in the blast furnace oxygen-enriched injection Sweet natural gas air port that the utility model embodiment provides.
Fig. 2 is the structure left view in the blast furnace oxygen-enriched injection Sweet natural gas air port that the utility model embodiment provides.
Embodiment
In order to understand the utility model in depth, below in conjunction with drawings and the specific embodiments, the utility model is described in detail.
See attached Fig. 1 and 2, the blast furnace oxygen-enriched injection Sweet natural gas air port that the utility model provides comprises: housing, air port ante-chamber 3, air port back cavity 2, dividing plate 6, the Sweet natural gas passage 1 for transport gas and the oxygen channel 4 for delivering oxygen; Housing entirety is in hollow cone; Enclosure interior is enclosed space; Enclosed space is separated into air port back cavity 2 and air port ante-chamber 3 by dividing plate 6; Air port ante-chamber 3 is positioned at the small end of hollow cone; Air port back cavity 2 is positioned at the large end of hollow cone; Sweet natural gas passage 1 and oxygen channel 4 run through air port back cavity 2 and air port ante-chamber 3; Sweet natural gas passage 1 and oxygen channel 4 are symmetrical arranged about the central shaft of housing.Sweet natural gas air port also comprises: back cavity water entry 10, back cavity water exit 11, ante-chamber water entry 8 and ante-chamber water exit 9; Back cavity water entry 10 and back cavity water exit 11 are communicated with air port back cavity 2; Ante-chamber water entry 8 and ante-chamber water exit 9 are communicated with air port ante-chamber 3 through air port back cavity 2.Sweet natural gas air port also comprises: traverse baffle 7; It is inner that polylith traverse baffle 7 is arranged on air port ante-chamber 3; Traverse baffle 7 and air port ante-chamber 3 inwall are connected; Traverse baffle 7 can change the runner of the cooling fluid passed in air port ante-chamber 3, makes the cooling performance of the high pressure industrial water coolant passed in air port ante-chamber 3 better.
Wherein, Sweet natural gas sprays into high furnace interior by Sweet natural gas passage 1, oxygen sprays into high furnace interior by oxygen channel 4 simultaneously, ensure that spray into the Sweet natural gas in blast furnace burns under the condition of oxygen enrichment, suppress the formation of carbon black, and then avoid carbon black to be mixed in slag, cause slag viscosity to raise, affect smooth operation of furnace.Sweet natural gas passage 1 and oxygen channel 4 are symmetrical arranged about the central shaft of housing, can ensure that the Sweet natural gas of ejection and oxygen converge in the central position of inlet front end, speed when can ensure the converging of two kinds of gases is identical, both contacts and balance out the opposite direction component of both speed after interacting, and then ensure fully mixing of Sweet natural gas and oxygen.
Wherein, back cavity water entry 10, back cavity water exit 11, ante-chamber water entry 8 and ante-chamber water exit 9 are set, inclosed recirculated cooling water is passed into air port back cavity 2 by back cavity inlet/outlet passage, air port back cavity 2 is cooled, because blast furnace is when burning, air port back cavity 2 is lower relative to the temperature of air port ante-chamber 3, only needs recirculated cooling water can reach cooling performance to air port back cavity 2, thus the temperature of the Sweet natural gas passage 1 reduced in air port back cavity 2 and oxygen channel 4.By ante-chamber inlet/outlet passage aweather preoral cavity 3 pass into high pressure industrial water coolant, cool to air port ante-chamber 3, the cooling performance of high pressure industrial water coolant is better than recirculated cooling water, ensures the cooling intensity of air port ante-chamber 3.High pressure industrial water coolant enters air port ante-chamber 3 through ante-chamber water entry 8, then discharges air port ante-chamber 3 by ante-chamber water exit 9.Recirculated cooling water enters air port back cavity 2 through back cavity water entry 10, air port back cavity 2 is discharged again by back cavity water exit 11, can avoid Sweet natural gas passage 1 and the too high generation explosion hazard of oxygen channel 4 temperature like this, prevent the too high generation structural distortion of this Sweet natural gas air port Yin Wendu simultaneously or break.
As preferably, Sweet natural gas passage 1 comprises: first channel main body and the first spiral high temperature nozzle; The bottom of the first spiral high temperature nozzle is communicated with first channel main body; Air port ante-chamber 3 offers the first hole; First spiral high temperature nozzle is located on the first hole; The jet hole of the first spiral high temperature nozzle is communicated with the housing external world.The scope of the end face of the first spiral high temperature nozzle distance housing small end is 0 ~ 60mm; First spiral high temperature nozzle and casing center axle are the angle (as angle [alpha] in illustrating) of 30 ° ~ 85 °; First spiral high temperature nozzle inwall is arranged in shape of threads.
As preferably, oxygen channel 4 comprises: second passage main body and the second spiral high temperature nozzle; The bottom of the second spiral high temperature nozzle is communicated with second passage main body; Air port ante-chamber 3 offers the second hole; Second spiral high temperature nozzle is located on the second hole; The jet hole of the second spiral high temperature nozzle is communicated with the housing external world.The scope of the end face of the second spiral high temperature nozzle distance housing small end is 0 ~ 60mm; Second spiral high temperature nozzle and casing center axle are the angle of 30 ° ~ 85 °; Second spiral high temperature nozzle inwall is arranged in shape of threads.
Wherein, the scope of the end face of first and second spiral high temperature nozzle distance housing small end is 0 ~ 60mm, causes mixed Sweet natural gas and oxygen in the burning of this center, Sweet natural gas air port, make the temperature in this Sweet natural gas air port too high apart from meeting too far away; Distance end face is too closely then unfavorable for the processing and manufacturing in this Sweet natural gas air port.First and second spiral high temperature nozzle and casing center axle are the air flow line that the angle of 30 ° ~ 85 ° can ensure Sweet natural gas or the oxygen sprayed, and when angle is greater than 85 °, air flow line is vertical direction, is unfavorable for the conveying of mixed gas to blast furnace; The processing and manufacturing difficulty in this Sweet natural gas air port can be increased when angle is less than 30 °.First and second spiral high temperature nozzle inwall arranges and can change gas flow track to a certain extent in shape of threads, and spiral helicine inwall makes part when the gas of inwall is ejected, have the trend of rotation, is conducive to the abundant mixing of Sweet natural gas and oxygen.
As preferably, the end face of housing small end stretches into high furnace interior 300 ~ 700mm, to ensure in Sweet natural gas and the oxygen raceway zone in blast furnace Thorough combustion after mixing.Housing adopts highly purified casting in bronze to make and forms; The back perimeter face of housing and the end face of housing small end arrange Al-base ceramic coating, can strengthen the high temperature resistant of this Sweet natural gas air port and wear resisting property.
A kind of blast furnace oxygen-enriched injection Sweet natural gas air port that the utility model provides is by arranging Sweet natural gas passage 1 and oxygen channel 4 makes Sweet natural gas spray into high furnace interior by Sweet natural gas passage 1, oxygen sprays into high furnace interior by oxygen channel 4 simultaneously, ensure that spray into the Sweet natural gas in blast furnace burns under the condition of oxygen enrichment, Sweet natural gas pyrolysis is suppressed to form carbon black, and then avoid carbon black to be mixed in slag, cause slag viscosity to raise, affect smooth operation of furnace.By Sweet natural gas passage 1 and oxygen channel 4 central shaft about housing is symmetrical arranged, the Sweet natural gas that sprays into and oxygen fully can be mixed with the hot blast blasted, ensure the gas mixture physical efficiency Thorough combustion entering blast furnace further from inlet front end.By arranging air port ante-chamber 3 and the airtight separate space of air port back cavity 2 these two, different heat-eliminating mediums is passed into respectively to air port ante-chamber 3 and air port back cavity 2, avoid this Sweet natural gas air port Yin Wendu too high and be out of shape or break, and then reduce the spoilage in Sweet natural gas air port, improve supply opening model, reduce ironmaking cost.The housing in this air port adopts highly purified casting in bronze to make and forms, and the end face of the back perimeter face of housing and housing small end arranges Al-base ceramic coating, can strengthen the high temperature resistant of this Sweet natural gas air port and wear resisting property, improves the work-ing life in this Sweet natural gas air port.Energy-saving and cost-reducing, control CO can be played in this Sweet natural gas air port
2the effect of discharge.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only embodiment of the present utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a blast furnace oxygen-enriched injection Sweet natural gas air port, is characterized in that, comprising:
Housing, air port ante-chamber, air port back cavity, dividing plate, for the Sweet natural gas passage of transport gas and the oxygen channel for delivering oxygen;
Described housing entirety is in hollow cone;
Described enclosure interior is enclosed space; Described enclosed space is separated into described air port back cavity and air port ante-chamber by described dividing plate; Described air port ante-chamber is positioned at the small end of described hollow cone; Described air port back cavity is positioned at the large end of described hollow cone;
Described Sweet natural gas passage and oxygen channel run through described air port back cavity and air port ante-chamber; Described Sweet natural gas passage and oxygen channel are symmetrical arranged about the central shaft of described housing.
2. Sweet natural gas air port according to claim 1, is characterized in that, described Sweet natural gas air port also comprises:
Back cavity water entry, back cavity water exit, ante-chamber water entry and ante-chamber water exit;
Described back cavity water entry and back cavity water exit are communicated with described air port back cavity;
Described ante-chamber water entry and ante-chamber water exit are communicated with described air port ante-chamber through described air port back cavity.
3. Sweet natural gas air port according to claim 1, is characterized in that:
Described Sweet natural gas passage comprises: first channel main body and the first spiral high temperature nozzle;
The bottom of described first spiral high temperature nozzle is communicated with described first channel main body; Described air port ante-chamber offers the first hole; Described first spiral high temperature nozzle is located on described first hole; The jet hole of described first spiral high temperature nozzle is communicated with the described housing external world.
4. Sweet natural gas air port according to claim 3, is characterized in that:
Described first spiral high temperature nozzle is 0 ~ 60mm apart from the scope of the end face of described housing small end;
Described first spiral high temperature nozzle and described casing center axle are the angle of 30 ° ~ 85 °;
Described first spiral high temperature nozzle inwall is arranged in shape of threads.
5. Sweet natural gas air port according to claim 1, is characterized in that:
Described oxygen channel comprises: second passage main body and the second spiral high temperature nozzle;
The bottom of described second spiral high temperature nozzle is communicated with described second passage main body; Described air port ante-chamber offers the second hole; Described second spiral high temperature nozzle is located on described second hole; The jet hole of described second spiral high temperature nozzle is communicated with the described housing external world.
6. Sweet natural gas air port according to claim 5, is characterized in that:
Described second spiral high temperature nozzle is 0 ~ 60mm apart from the scope of the end face of described housing small end;
Described second spiral high temperature nozzle and described casing center axle are the angle of 30 ° ~ 85 °;
Described second spiral high temperature nozzle inwall is arranged in shape of threads.
7. Sweet natural gas air port according to claim 1, is characterized in that:
The end face of described housing small end stretches into high furnace interior 300 ~ 700mm.
8. Sweet natural gas air port according to claim 1, is characterized in that, described Sweet natural gas air port also comprises:
Traverse baffle;
It is inner that traverse baffle described in polylith is arranged on described air port ante-chamber; Before described traverse baffle and described air port, cavity wall is connected; Described traverse baffle can change the runner of the cooling fluid passed in the ante-chamber of described air port.
9. Sweet natural gas air port according to claim 1, is characterized in that:
Described housing adopts highly purified casting in bronze to make and forms; The back perimeter face of described housing and the end face of housing small end arrange Al-base ceramic coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393478.0U CN204039426U (en) | 2014-07-16 | 2014-07-16 | A kind of blast furnace oxygen-enriched injection Sweet natural gas air port |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393478.0U CN204039426U (en) | 2014-07-16 | 2014-07-16 | A kind of blast furnace oxygen-enriched injection Sweet natural gas air port |
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| CN204039426U true CN204039426U (en) | 2014-12-24 |
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| CN201420393478.0U Active CN204039426U (en) | 2014-07-16 | 2014-07-16 | A kind of blast furnace oxygen-enriched injection Sweet natural gas air port |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980833A (en) * | 2018-09-20 | 2018-12-11 | 张家港市鑫州焊割机械有限公司 | Pure oxygen natural gas combustion nozzle |
| CN115975402A (en) * | 2022-12-05 | 2023-04-18 | 云南云维飞虎化工有限公司 | Carbon black production equipment for quality improvement by adopting pure oxygen |
| WO2023231125A1 (en) * | 2022-05-31 | 2023-12-07 | 昌黎县兴国精密机件有限公司 | Small sleeve apparatus for hydrogen injection tuyere |
-
2014
- 2014-07-16 CN CN201420393478.0U patent/CN204039426U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980833A (en) * | 2018-09-20 | 2018-12-11 | 张家港市鑫州焊割机械有限公司 | Pure oxygen natural gas combustion nozzle |
| WO2023231125A1 (en) * | 2022-05-31 | 2023-12-07 | 昌黎县兴国精密机件有限公司 | Small sleeve apparatus for hydrogen injection tuyere |
| CN115975402A (en) * | 2022-12-05 | 2023-04-18 | 云南云维飞虎化工有限公司 | Carbon black production equipment for quality improvement by adopting pure oxygen |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Co-patentee after: Shougang Jingtang Steel & Iron United Co., Ltd. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Co-patentee before: Shougang Jingtang Steel & Iron United Co., Ltd. Patentee before: Capital Iron & Steel General Company |