CN218465860U - Blast furnace reveals guiding device of coal gas - Google Patents
Blast furnace reveals guiding device of coal gas Download PDFInfo
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- CN218465860U CN218465860U CN202222647989.8U CN202222647989U CN218465860U CN 218465860 U CN218465860 U CN 218465860U CN 202222647989 U CN202222647989 U CN 202222647989U CN 218465860 U CN218465860 U CN 218465860U
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Abstract
The application relates to the field of blast furnace safety equipment, in particular to a flow guide device for gas leakage of a blast furnace; the flow guide device comprises: the annular pipelines are respectively connected with the plurality of dust removal systems and are arranged around the blast furnace body; a plurality of air suction devices are arranged along the circumferential direction of the annular pipeline, air outlets of the air suction devices are communicated with the annular pipeline, and air inlets of the air suction devices are arranged towards the blast furnace body; the control unit comprises a carbon monoxide sensor group and a control valve group, the control valve group is arranged between the annular pipeline and the plurality of dust removal systems, the carbon monoxide sensor group is arranged around the blast furnace body, the detection surface of the carbon monoxide sensor group faces the blast furnace body, and the carbon monoxide sensor group is connected with the control valve group through an electric signal; compared with the process of processing by adopting a single pipeline or system in the prior art, the coal gas leaked by the blast furnace can be directly introduced into a dust removal system of a casting house to be utilized, so that the simplification of processing equipment is realized.
Description
Technical Field
The application relates to the field of blast furnace safety equipment, in particular to a flow guide device for gas leakage of a blast furnace.
Background
With the rapid development of the steel industry, the service time of a blast furnace used for steel making is longer and longer, because the blast furnace generally adopts high-temperature resistant refractory bricks and materials, the refractory bricks are easy to corrode and damage in a long-time steel making stage, because the damaged part at the lower position of the blast furnace is easy to repair, the damaged refractory bricks and refractory materials at the top of the blast furnace are difficult to treat and can only be repaired from the surface generally, but if a repair gap exists between the repair materials and a blast furnace shell, a large amount of blast furnace tail gas can be leaked in waste heat blast furnace operation and stokehole tapping operation, the blast furnace tail gas contains a large amount of incompletely combusted coal gas, the carbon monoxide contains a large amount of carbon monoxide, when the content of the coal gas in the blast furnace tail gas is higher, the local carbon monoxide concentration in the coal gas can reach 400ppm, and the long-term leakage can cause the poisoning of the coal gas of personnel and influence the safe production because the carbon monoxide is harmful to the human body.
At present to the absorption mode of tail gas is revealed to the blast furnace, adopt solitary pipeline or system to absorb the coal gas of revealing generally, coal gas guiding equipment wherein is comparatively complicated, need adopt a large amount of edulcorations and dust collecting equipment etc to improve the blast furnace tail gas's that reveals treatment cost, how consequently simplify coal gas guiding equipment, with the treatment cost of the blast furnace tail gas that reduces to reveal, be the technical problem that needs to solve at present urgently.
Disclosure of Invention
The application provides a guiding device of coal gas is revealed to blast furnace to solve the comparatively complicated technical problem of coal gas guiding equipment among the prior art.
In a first aspect, the present application provides a guiding device for coal gas is revealed to blast furnace for handle the coal gas of revealing in the blast furnace, the blast furnace includes blast furnace body and a plurality of dust pelletizing system, guiding device locates a plurality ofly dust pelletizing system with between the blast furnace body, dust pelletizing system is used for getting rid of tail gas in the casting house of blast furnace, guiding device includes:
the annular pipelines are respectively connected with the plurality of dust removal systems and are arranged around the blast furnace body;
the plurality of air suction devices are arranged along the circumferential direction of the annular pipeline, an air outlet of each air suction device is communicated with the annular pipeline, and an air inlet of each air suction device faces the blast furnace body;
the control unit, the control unit includes carbon monoxide sensor group and valves, the valves are located the ring conduit is with a plurality of between the dust pelletizing system, carbon monoxide sensor group locates around the blast furnace body, carbon monoxide sensor group's detection face orientation the blast furnace body sets up, carbon monoxide sensor group passes through signal connection the valves.
Optionally, the air suction device comprises a conical cover and an air suction pipe, the air suction end of the air suction pipe is fixedly connected with the conical cover, and the other end of the air suction pipe is communicated with the annular pipeline.
Optionally, the shortest distance from any section of the annular pipeline to the surface of the blast furnace body is the same.
Optionally, the shortest distances from the plurality of suction fans to the surface of the blast furnace body are all the same.
Optionally, the control unit further includes: and the controller is respectively connected with the carbon monoxide sensor group and the control valve group through electric signals.
Optionally, the dust removal system includes a dust removal fan and a dust removal pipeline, one end of the dust removal pipeline is connected to the dust removal fan, and the other end of the dust removal pipeline is connected to the control valve group;
the controller is connected with the dust removal fan through an electric signal.
Optionally, the carbon monoxide sensor group and the blast furnace body are arranged in a second gap, and the air suction device and the blast furnace body are arranged in a first gap.
Optionally, the distance of the first gap > the distance of the second gap.
Optionally, the distance of the first gap is 0.5m to 2m.
Optionally, the distance of the second gap is 0.1m to 0.3m.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the embodiment of the application provides a blast furnace leaks guiding device of coal gas, realize revealing the treatment facility portably of coal gas, compare with the process that prior art adopted solitary pipeline or system to handle, the coal gas that the blast furnace revealed can directly be guided into the dust pelletizing system in the cast house and utilized, realize the portably of treatment facility, detect the content of the coal gas that the blast furnace revealed through carbon monoxide sensor group and exceed the standard, the control valve controls out dust pelletizing system and ring conduit and forms the route, make the wind-force of dust pelletizing system drive the gas flow in the ring conduit, thereby form suction, make the aspirator towards the blast furnace body absorb the coal gas that the blast furnace revealed, transport dust pelletizing system through the ring conduit, thereby be retrieved by the subsequent coal gas recovery unit of dust pelletizing system, thereby cooperate the dust pelletizing system of blast furnace to realize the portably of revealing to handle.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a flow guiding device according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating an operating logic of a flow guiding device according to an embodiment of the present disclosure;
the system comprises a blast furnace body 1, a dust removal system 2, a dust removal fan 21, a dust removal pipeline 22, an annular pipeline 3, an air suction device 4, a conical cover 41, an air suction pipe 42, a control unit 5, a carbon monoxide sensor group 51, a control valve group 52 and a controller 53.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, 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 invention belongs. If there is a conflict, the present specification will control.
In the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" and the like are to be understood in a broad sense, and for example, "fixed" may be a fixed connection, a detachable connection, or an integral body, a mechanical connection, or an electrical connection; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The inventive thinking of the application is that:
because the blast furnace is provided with a plurality of casting houses, and in order to ensure that the environment in the casting houses is suitable for working, a dust removal system is generally arranged on the casting houses to absorb dust and unburned tail gas generated in the casting process, and meanwhile, because an operation platform of the blast furnace is close to the furnace top, the whole space is narrow, and if separate equipment or a system is adopted, the whole space is insufficient, so that how to treat the tail gas of the casting houses by using the dust removal system can also treat blast furnace gas leaked from the part of the furnace top, the equipment is simplified, the simple treatment of the blast furnace leaked gas is realized, the production cost is saved, and the leaked gas of the blast furnace can be comprehensively removed.
In order to solve the technical problems, the embodiment of the invention provides the following general ideas:
in an embodiment of the present application, as shown in fig. 1, a flow guiding device for blast furnace gas leakage is provided, for treating gas leaked in a blast furnace, the blast furnace includes a blast furnace body 1 and a plurality of dust removing systems 2, the flow guiding device is provided between the plurality of dust removing systems 2 and the blast furnace body 1, the dust removing systems 2 are used for removing tail gas in a cast house of the blast furnace, the flow guiding device includes:
the annular pipelines 3 are respectively connected with the plurality of dust removal systems 2, and the annular pipelines 3 are arranged around the blast furnace body 1;
the plurality of air suction devices 4 are arranged along the circumferential direction of the annular pipeline 3, an air outlet of each air suction device 4 is communicated with the annular pipeline 3, and an air inlet of each air suction device 4 is arranged towards the blast furnace body 1;
the control unit 5, the control unit 5 includes carbon monoxide sensor group 51 and valve unit 52, valve unit 52 locates annular duct 3 and a plurality of between the dust pelletizing system 2, carbon monoxide sensor group 51 locates around the blast furnace body 1, carbon monoxide sensor group 51's detection face orientation blast furnace body 1 sets up, carbon monoxide sensor group 51 passes through electric signal connection valve unit 52, wherein, valve unit 52 all adopts HK59-DB type intelligent pneumatic control valve, carbon monoxide sensor group 51 all adopts BRW100-2012 type.
In some alternative embodiments, the air suction device 4 includes a conical cover 41 and an air suction pipe 42, the air suction pipe 42 is fixedly connected to the conical cover 41, and the other end of the air suction pipe 42 communicates with the annular duct 3.
In the embodiment of the application, the conical cover 41 can be formed by directly rolling the steel plate with the thickness of 4mm and the length of 1000mm, so that the range of absorbing the leaked gas of the blast furnace can be enlarged, and the absorption of the leaked gas is accelerated.
In some alternative embodiments, the shortest distance from any section of the annular duct 3 to the surface of the blast furnace body 1 is the same.
In the embodiment of the application, the shortest distances from the control annular pipeline 3 to each section of the blast furnace body 1 are the same, and the distances between the control annular pipeline 3 and the blast furnace body 1 are substantially the same, so that the absorption speed of leaked coal gas in each area is maintained to be the same, and the diffusion of the leaked coal gas caused by the inconsistent absorption capacity of different leakage areas is avoided.
In some alternative embodiments, the shortest distances from the plurality of suction fans 4 to the surface of the blast furnace body 1 are all the same.
In the embodiment of the application, the shortest distances from the control air suction device 4 to the blast furnace body 1 are the same, the capability of absorbing leaked coal gas is substantially consistent when the control air suction device 4 works, the diffusion of the leaked coal gas in different air suction capability areas is avoided, and the complete adsorption is ensured.
In some optional embodiments, the control unit 5 further comprises: and the controller 53 is respectively connected with the carbon monoxide sensor group 51 and the control valve group 52 through electric signals, wherein the controller 53 can adopt a VMS-3100-GAS-CO type combustible GAS alarm detector.
In the embodiment of the application, the controller 53 is adopted to collect the data of the carbon monoxide sensor, and the controller 53 controls the control valve group 52 to work, so that the annular pipeline 3 is communicated with the dust removal system 2, and the area where the blast furnace gas leakage occurs can be rapidly absorbed in the air suction device 4.
In some optional embodiments, the dust removing system 2 includes a dust removing fan 21 and a dust removing pipeline 22, one end of the dust removing pipeline 22 is connected to the dust removing fan 21, and the other end of the dust removing pipeline 22 is connected to the control valve set 52;
the controller 53 is connected to the dust removal fan 21 through an electric signal.
In the embodiment of the application, the controller 53 is electrically connected with the dust removal fan 21, the CO content of the blast furnace leakage coal gas can be further measured in real time through the carbon monoxide sensor group 51, when the CO content of the blast furnace leakage coal gas is more than 200ppm, the control valve is opened, the annular pipeline 3 is communicated with the dust removal system 2, if the CO content is more than 200ppm within the set time (generally within 2 min), the controller 53 can control the dust removal fan 21 to increase the rotating speed, the suction force of the suction fan 4 is increased, and the absorption of the blast furnace leakage coal gas is accelerated.
In some optional embodiments, the carbon monoxide sensor group 51 is disposed in a second gap with the blast furnace body 1, and the air suction device 4 is disposed in a first gap with the blast furnace body 1.
In the embodiment of the application, the control carbon monoxide sensor group 51 and the air suction device 4 are arranged in a gap between the control carbon monoxide sensor group and the air suction device 4 and the blast furnace body 1, so that the mutual interference between the devices is avoided, and the normal work of the devices is influenced.
In some alternative embodiments, the distance of the first gap > the distance of the second gap.
In the embodiment of the application, the distance of the first gap between the control air suction device 4 and the blast furnace body 1 is greater than the distance between the carbon monoxide sensor group 51 and the blast furnace body 1, so that the air suction device 4 is prevented from interfering the detection of the carbon monoxide sensor group 51, and meanwhile, the carbon monoxide sensor group 51 can monitor the leaked carbon monoxide in the blast furnace gas in real time.
In some alternative embodiments, the first gap has a distance of 0.5m to 2m.
In the embodiment of the application, the positive effect of controlling the distance of the first gap to be 0.5 m-2 m is that in the distance range, the air suction device 4 can fully absorb leaked coal gas by means of wind power of the dust removal system 2, and meanwhile, the interference on the carbon monoxide sensor group 51 can be avoided.
In some alternative embodiments, the second gap has a distance of 0.1m to 0.3m.
In the embodiment of the present application, the positive effect of controlling the distance of the second gap to be 0.1m to 0.3m is that within the distance range, the accuracy of the carbon monoxide sensor group 51 for detecting carbon monoxide in blast furnace gas in real time can be ensured.
The embodiment of the application provides a blast furnace leaks guiding device of coal gas, realize revealing the treatment facility portalization of coal gas, compare with the process that prior art adopted solitary pipeline or system to handle, the coal gas that the blast furnace revealed can directly be guided into the dust pelletizing system in the cast house and utilized, realize the portalization of treatment facility, detect the content of the coal gas that the blast furnace revealed through carbon monoxide sensor group and exceed the standard, the control valve controls out dust pelletizing system and ring conduit and forms the route, make the wind-force of dust pelletizing system drive the gas flow in the ring conduit, thereby form suction, make the aspirator towards the blast furnace body absorb the coal gas that the blast furnace revealed, transport dust pelletizing system through the ring conduit, thereby be retrieved by the subsequent coal gas recovery unit of dust pelletizing system, thereby cooperate with the dust pelletizing system of blast furnace to realize the portalization of revealing, with the treatment cost that the coal gas is revealed to the blast furnace.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, each range between its endpoints and individual point values, and each individual point value can be combined with each other to give one or more new numerical ranges, and such numerical ranges should be construed as specifically disclosed herein.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a guiding device of coal gas is revealed to blast furnace for handle the coal gas of revealing in the blast furnace, its characterized in that, the blast furnace includes blast furnace body (1) and a plurality of dust pelletizing system (2), guiding device locates a plurality ofly dust pelletizing system (2) with between blast furnace body (1), dust pelletizing system (2) are arranged in getting rid of tail gas in the casting house of blast furnace, guiding device includes:
the annular pipeline (3) is respectively connected with the plurality of dust removal systems (2), and the annular pipeline (3) is arranged around the blast furnace body (1);
the air suction devices (4) are arranged along the circumferential direction of the annular pipeline (3), an air outlet of each air suction device (4) is communicated with the annular pipeline (3), and an air inlet of each air suction device (4) is arranged towards the blast furnace body (1);
the control unit (5), the control unit (5) include carbon monoxide sensor group (51) and valve unit (52), valve unit (52) are located annular duct (3) and a plurality of between dust pelletizing system (2), carbon monoxide sensor group (51) are located around blast furnace body (1), the detection face orientation of carbon monoxide sensor group (51) blast furnace body (1) sets up, carbon monoxide sensor group (51) pass through electric signal connection valve unit (52).
2. The flow guiding device according to claim 1, characterized in that the air suction device (4) comprises a conical cover (41) and an air suction pipe (42), the air suction end of the air suction pipe (42) is fixedly connected with the conical cover (41), and the other end of the air suction pipe (42) is communicated with the annular pipeline (3).
3. Deflector according to claim 1, characterised in that the shortest distance of any section of the annular duct (3) to the surface of the blast furnace body (1) is the same.
4. Flow guiding device according to claim 3, characterized in that the shortest distance from the plurality of suction blowers (4) to the surface of the blast furnace body (1) is the same.
5. Deflector device according to claim 1, characterized in that the control unit (5) further comprises: a controller (53), wherein the controller (53) is respectively connected with the carbon monoxide sensor group (51) and the control valve group (52) through electric signals.
6. The flow guiding device of claim 5, wherein the dust removing system (2) comprises a dust removing fan (21) and a dust removing pipeline (22), one end of the dust removing pipeline (22) is connected with the dust removing fan (21), and the other end of the dust removing pipeline (22) is connected with the control valve group (52);
the controller (53) is connected with the dust removal fan (21) through an electric signal.
7. Deflector device according to claim 1, characterised in that a second gap is provided between the carbon monoxide sensor group (51) and the blast furnace body (1) and a first gap is provided between the suction fan (4) and the blast furnace body (1).
8. Deflector device according to claim 7, wherein the distance of the first gap > the distance of the second gap.
9. Deflector device according to claim 8, wherein the first gap has a distance of 0.5-2 m.
10. Deflector device according to claim 8, wherein the second gap has a distance of 0.1-0.3 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222647989.8U CN218465860U (en) | 2022-10-09 | 2022-10-09 | Blast furnace reveals guiding device of coal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222647989.8U CN218465860U (en) | 2022-10-09 | 2022-10-09 | Blast furnace reveals guiding device of coal gas |
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| Publication Number | Publication Date |
|---|---|
| CN218465860U true CN218465860U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222647989.8U Active CN218465860U (en) | 2022-10-09 | 2022-10-09 | Blast furnace reveals guiding device of coal gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN218465860U (en) |
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2022
- 2022-10-09 CN CN202222647989.8U patent/CN218465860U/en active Active
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