CN210420009U - Electromagnetic induction vertical pulverized coal heater for blast furnace coal injection - Google Patents
Electromagnetic induction vertical pulverized coal heater for blast furnace coal injection Download PDFInfo
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- CN210420009U CN210420009U CN201921409757.0U CN201921409757U CN210420009U CN 210420009 U CN210420009 U CN 210420009U CN 201921409757 U CN201921409757 U CN 201921409757U CN 210420009 U CN210420009 U CN 210420009U
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Abstract
The utility model relates to an electromagnetic induction vertical pulverized coal heater for blast furnace coal injection, which belongs to the technical field of metallurgical iron-making equipment. The technical scheme is as follows: the heating body (1) is a metal rod which is vertically arranged, and a plurality of through holes (17) are axially formed in the metal rod; an upper pulverized coal bin (7) is arranged at the top of the heating body (1), a lower pulverized coal bin (8) is arranged at the bottom of the heating body, the upper pulverized coal bin (7) and the lower pulverized coal bin (8) are communicated through a plurality of through holes (17) in a metal rod, and an electromagnetic induction heating device (2) is sleeved outside the metal rod. The utility model has the advantages that: the heat loss is small and the heat efficiency is improved because the heat exchanger is arranged between the blast furnace coal powder distributor and the blast furnace; the electromagnetic induction heating device is used as a heat source and is vertically arranged, so that stable heating temperature of pulverized coal is guaranteed, the overall dimension is small, the occupied area is small, and the improvement and the popularization and the use of the original blast furnace are facilitated.
Description
Technical Field
The utility model relates to an electromagnetic induction vertical pulverized coal heater for blast furnace coal injection, which belongs to the technical field of metallurgical iron-making equipment.
Background
At present, in the field of metallurgical iron making, the pulverized coal heating technology for blast furnace injection can effectively improve the combustion efficiency of pulverized coal and reduce the fuel ratio of a blast furnace, and the technology is gradually popularized and used. However, the prior art generally adopts the transverse arrangement, so that the prior pulverized coal preheaters for blast furnace blowing have large overall dimension and large occupied area, and the improvement, popularization and use of the technology on the prior blast furnace are limited. In addition, the pulverized coal preheater in the prior art is large in size and can only be arranged in front of the pulverized coal distributor of the blast furnace, and the pulverized coal preheater is far away from the blast furnace, so that the preheated pulverized coal has high heat loss, wastes energy and reduces the coal injection efficiency of the blast furnace.
Disclosure of Invention
The utility model aims at providing an electromagnetic induction vertical pulverized coal heater for blast furnace coal injection, which is arranged between a pulverized coal distributor and a blast furnace, has small heat loss and improves the heat efficiency; the electromagnetic induction heating device is used as a heat source and is vertically arranged, so that the stable heating temperature of the pulverized coal is ensured, the overall dimension is small, the occupied area is small, and the technical problems existing in the background technology are solved.
The technical scheme of the utility model is that:
an electromagnetic induction vertical pulverized coal heater for blast furnace coal injection is arranged between a blast furnace pulverized coal distributor and a blast furnace, and comprises a heating body, an upper pulverized coal bin, a lower pulverized coal bin and an electromagnetic induction heating device, wherein the heating body is a vertically arranged metal rod, and a plurality of through holes are axially arranged on the metal rod; the top of the heating body is provided with an upper pulverized coal bunker, the bottom of the heating body is provided with a lower pulverized coal bunker, the upper pulverized coal bunker and the lower pulverized coal bunker are communicated through a plurality of through holes in the metal rod, and the electromagnetic induction heating device is sleeved outside the metal rod.
The shape of the cylindrical interface of the metal rod is arbitrary and comprises a cylinder, a square, a rhombus and the like. For example: the metal rod is cylindrical and is made of steel materials; a plurality of through holes are uniformly distributed on the cross section of the metal rod, the coal dust in the upper coal dust bin leaks into the lower coal dust bin through the through holes, and the coal dust is heated by an electromagnetic induction heating device sleeved outside in the falling process.
The shape of the through hole is arbitrary and comprises a circular hole, a square, a rhombus and the like. For example: the through hole is not limited to a circular hole.
The upper pulverized coal bin is connected with a pulverized coal distributor branch pipeline of a blast furnace pulverized coal distributor through a pulverized coal inlet pipeline; the lower coal powder bin is connected with a tuyere device of the blast furnace through a coal powder outlet pipeline.
And a bleeding valve is arranged at the top of the upper pulverized coal bin. A pressure relief pipeline is arranged between the top of the upper coal powder bin and the coal powder outlet pipeline. The blow-off valve is used for exhausting air. The coal gas pressure relief pipeline is used for discharging the coal powder bin gas at the upper part into the outlet coal powder pipeline during the operation of the utility model.
The pulverized coal outlet pipeline is connected with the gas pipeline through a pressure supplementing valve and is used for boosting pulverized coal to enter the blast furnace at an accelerated speed and controlling the coal injection amount of the pulverized coal entering the blast furnace.
A pulverized coal inlet valve is arranged on the pulverized coal inlet pipeline; a coal powder outlet valve is arranged on the coal powder outlet pipeline. The coal powder inlet valve is used for cutting off the electromagnetic coal powder heater.
The coal powder of the blast furnace coal powder distributor enters the upper coal powder bin through a coal powder inlet pipeline, and the coal powder enters the lower coal powder bin after being heated and enters the tuyere device of the blast furnace from a coal powder outlet pipeline.
The utility model relates to an electromagnetic induction heating device, for the electromagnetic heating product of market, the equipment publicly known in the art is publicly used, for example: an electromagnetic induction heating apparatus manufactured by commercially available general electric technology limited.
The utility model relates to a valve is the general part of the market commonly used in this field, and a lot of valve manufacturers all have the production, for example: jiangsu Qidong valve works.
The utility model relates to a pulverized coal distributor and a tuyere device for a blast furnace, which are all known and used technologies in the field and are completely the same as the pulverized coal distributor and the tuyere device which are commonly used on the blast furnace.
The utility model has the advantages that: the heat loss is small and the heat efficiency is improved because the heat exchanger is arranged between the blast furnace coal powder distributor and the blast furnace; the electromagnetic induction heating device is used as a heat source and is vertically arranged, so that stable heating temperature of pulverized coal is guaranteed, the overall dimension is small, the occupied area is small, and the improvement and the popularization and the use of the original blast furnace are facilitated.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of embodiment A-A of the present invention;
fig. 3 is a system connection diagram of the embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a heating body according to an embodiment of the present invention;
in the figure: the device comprises a heating body 1, an electromagnetic induction heating device 2, a coal powder inlet pipeline 3, a coal powder inlet valve 4, a blow-off valve 5, a pressure relief pipeline 6, an upper coal powder bin 7, a lower coal powder bin 8, a coal powder outlet valve 9, a gas pipeline 10, a pressure compensating valve 11, a coal powder outlet pipeline 12, a blast furnace coal powder distributor 13, a blast furnace 14, a tuyere device 15, a coal powder distributor branch pipeline 16 and a through hole 17.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
An electromagnetic induction vertical pulverized coal heater for blast furnace coal injection is arranged between a blast furnace pulverized coal distributor 13 and a blast furnace 14 and comprises a heating body 1, an upper pulverized coal bin 7, a lower pulverized coal bin 8 and an electromagnetic induction heating device 2, wherein the heating body 1 is a vertically arranged metal rod, and a plurality of through holes 17 are axially formed in the metal rod; an upper coal dust bin 7 is arranged at the top of the heating body 1, a lower coal dust bin 8 is arranged at the bottom of the heating body, the upper coal dust bin 7 and the lower coal dust bin 8 are communicated through a plurality of through holes 17 in a metal rod, and the electromagnetic induction heating device 2 is sleeved outside the metal rod.
The metal rod is cylindrical and is made of steel materials; a plurality of through holes 17 are uniformly distributed on the section of the metal rod, the coal dust in the upper coal dust bin 7 leaks into the lower coal dust bin 8 through the through holes 17, and the coal dust is heated by the electromagnetic induction heating device 2 sleeved outside in the falling process.
The through holes are circular holes.
The upper coal powder bin 7 is connected with a coal powder distributor branch pipeline 16 of a blast furnace coal powder distributor 13 through a coal powder inlet pipeline 3; the lower coal dust bin 8 is connected with a tuyere device 15 of a blast furnace 14 through a coal dust outlet pipeline 12.
And a blow-off valve 5 is arranged at the top of the upper pulverized coal bin 7. A pressure relief pipeline 6 is arranged between the top of the upper coal powder bin 7 and the coal powder outlet pipeline 12. The blow-off valve is used for exhausting air. The coal gas pressure relief pipeline is used for discharging the coal powder bin gas at the upper part into the outlet coal powder pipeline during the operation of the utility model.
The pulverized coal outlet pipeline 12 is connected with the gas pipeline 10 through a pressure compensating valve 11 and is used for boosting pulverized coal to enter a blast furnace at an accelerated speed and controlling the coal injection amount of the pulverized coal entering the blast furnace.
A pulverized coal inlet valve 4 is arranged on the pulverized coal inlet pipeline 3; a coal powder outlet valve 9 is arranged on the coal powder outlet pipeline 12. The coal powder inlet valve is used for cutting off the electromagnetic coal powder heater.
The coal powder of the coal powder distributor of the blast furnace enters the upper coal powder bin through an inlet coal powder pipeline, and the coal powder enters the lower coal powder bin after being heated and enters the tuyere device of the blast furnace from a coal powder outlet pipeline.
The utility model relates to an electromagnetic induction heating device, for the electromagnetic heating product of market, the equipment publicly known in the art is publicly used, for example: an electromagnetic induction heating apparatus manufactured by commercially available general electric technology limited.
The utility model relates to a valve is the general part of the market commonly used in this field, and a lot of valve manufacturers all have the production, for example: jiangsu Qidong valve works.
The utility model relates to a pulverized coal distributor and a tuyere device for a blast furnace, which are all known and used technologies in the field and are completely the same as the pulverized coal distributor and the tuyere device which are commonly used on the blast furnace.
The process flow comprises the following steps: the coal powder from the coal powder injection and preparation workshop enters a blast furnace coal powder distributor 13, enters a coal powder inlet pipeline 3 from a coal powder distributor branch pipeline 16, then enters an upper coal powder bin 7, the gas and the coal powder in the upper coal powder bin are separated, the coal powder slowly flows downwards along a through hole 17 of a heating body 1, an electromagnetic induction heating device 2 heats the heating body, the coal powder is heated in the heating body 1 and finally enters a lower coal powder bin 8, the gas after the separation of the upper coal powder bin 7 enters a coal powder outlet pipeline 12 through a pressure relief pipeline 6, and the coal powder is pushed to move to an air port device 15; and the coal powder is also connected with a gas pipeline 10 through a pressure compensating valve 11 and is used for boosting the coal powder to enter the blast furnace in an accelerating way, controlling the coal injection quantity of the coal powder entering the blast furnace and finally entering the blast furnace 14.
Close buggy inlet valve 4, buggy outlet valve 9, open bleed valve 5, the utility model discloses stop work.
Claims (6)
1. The utility model provides a vertical pulverized coal heater of electromagnetic induction for blast furnace coal injection which characterized in that: the heating device is arranged between a blast furnace pulverized coal distributor (13) and a blast furnace (14) and comprises a heating body (1), an upper pulverized coal bin (7), a lower pulverized coal bin (8) and an electromagnetic induction heating device (2), wherein the heating body (1) is a vertically arranged metal rod, and a plurality of through holes (17) are axially formed in the metal rod; an upper pulverized coal bin (7) is arranged at the top of the heating body (1), a lower pulverized coal bin (8) is arranged at the bottom of the heating body, the upper pulverized coal bin (7) and the lower pulverized coal bin (8) are communicated through a plurality of through holes (17) in a metal rod, and an electromagnetic induction heating device (2) is sleeved outside the metal rod.
2. The electromagnetic induction vertical pulverized coal heater for blast furnace coal injection according to claim 1, characterized in that: the metal rod is cylindrical and is made of steel materials; a plurality of through holes (17) are uniformly distributed on the cross section of the metal rod.
3. The electromagnetic induction vertical pulverized coal heater for blast furnace coal injection according to claim 1 or 2, characterized in that: the upper coal powder bin (7) is connected with a coal powder distributor branch pipeline (16) of a blast furnace coal powder distributor (13) through a coal powder inlet pipeline (3); the lower coal powder bin (8) is connected with a tuyere device (15) of a blast furnace (14) through a coal powder outlet pipeline (12).
4. The electromagnetic induction vertical pulverized coal heater for blast furnace coal injection according to claim 1 or 2, characterized in that: a bleeding valve (5) is arranged at the top of the upper pulverized coal bin (7); a pressure relief pipeline (6) is arranged between the top of the upper coal powder bin (7) and the coal powder outlet pipeline (12).
5. The electromagnetic induction vertical pulverized coal heater for blast furnace coal injection according to claim 3, characterized in that: the pulverized coal outlet pipeline (12) is connected with the gas pipeline (10) through a pressure supplementing valve (11).
6. The electromagnetic induction vertical pulverized coal heater for blast furnace coal injection according to claim 3, characterized in that: a pulverized coal inlet valve (4) is arranged on the pulverized coal inlet pipeline (3); a coal powder outlet valve (9) is arranged on the coal powder outlet pipeline (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921409757.0U CN210420009U (en) | 2019-08-28 | 2019-08-28 | Electromagnetic induction vertical pulverized coal heater for blast furnace coal injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921409757.0U CN210420009U (en) | 2019-08-28 | 2019-08-28 | Electromagnetic induction vertical pulverized coal heater for blast furnace coal injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210420009U true CN210420009U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921409757.0U Active CN210420009U (en) | 2019-08-28 | 2019-08-28 | Electromagnetic induction vertical pulverized coal heater for blast furnace coal injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210420009U (en) |
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2019
- 2019-08-28 CN CN201921409757.0U patent/CN210420009U/en active Active
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