CN220520534U - Oxygen-enriching device for blast furnace - Google Patents
Oxygen-enriching device for blast furnace Download PDFInfo
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- CN220520534U CN220520534U CN202321923346.XU CN202321923346U CN220520534U CN 220520534 U CN220520534 U CN 220520534U CN 202321923346 U CN202321923346 U CN 202321923346U CN 220520534 U CN220520534 U CN 220520534U
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- oxygen
- blast furnace
- regulator
- controller
- detector
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 168
- 239000001301 oxygen Substances 0.000 claims abstract description 168
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 168
- 238000004891 communication Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000295 complement effect Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000036284 oxygen consumption Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application provides an oxygen enrichment device for a blast furnace, comprising: a blower; the blast furnace is connected with an air outlet of the fan; the oxygen generator is connected to the blast furnace and comprises at least two oxygen generating units which are connected with each other in parallel, at least one of the at least two oxygen generating units is connected with an air inlet of the fan, and at least one other oxygen generating unit is connected with an air outlet of the fan; each oxygen generating unit comprises an oxygen generator, a regulator and a flow detector which are mutually connected through pipelines, wherein the flow detector is used for detecting the air flow in the pipelines, and the regulator is used for controlling the air flow in the pipelines. In the oxygen-enriched device, each oxygen-making unit independently operates with a connected oxygen-making unit, when the oxygen-making unit for oxygen supply needs maintenance or other reasons stop operating, the oxygen-making units can provide oxygen for realizing complementary operation so as to ensure the oxygen consumption requirement of the blast furnace, and the flow detector is utilized to obtain the air flow in the pipeline so as to slightly adjust the oxygen supply of the blast furnace according to the production requirement of the blast furnace.
Description
Technical Field
The application belongs to the technical field of blast furnace oxygen enrichment, and particularly relates to an oxygen enrichment device for a blast furnace.
Background
The oxygen-enriched system is one of the key of normal operation of the blast furnace, the traditional oxygen supply mode is to produce oxygen through the air separation equipment and to add oxygen into the air supply pipe behind the fan, but when the oxygen-enriched output is adjusted in a large range, the oxygen output is adjusted by stopping the oxygen generator set or increasing or decreasing the oxygen output of the oxygen low-temperature air separation equipment, the oxygen generator set is stopped for a long time due to the process reason and cannot meet the oxygen supply requirement, and the oxygen-enriched consumption of the blast furnace is required to be adjusted quickly in real time according to the furnace condition of the blast furnace, so the problems of high difficulty in adjusting the oxygen-enriched output, poor adjusting effect and the like exist.
Disclosure of Invention
The embodiment of the application provides an oxygen enrichment device for a blast furnace, which can improve the oxygen enrichment adjusting effect and reduce the adjusting difficulty of the oxygen enrichment output.
In one aspect, the present application provides an oxygen enrichment apparatus for a blast furnace, comprising: a blower; the blast furnace is connected with an air outlet of the fan; the oxygen generator is connected to the blast furnace and comprises at least two oxygen generating units which are connected with each other in parallel, at least one of the at least two oxygen generating units is connected with an air inlet of the fan, and at least one other oxygen generating unit is connected with an air outlet of the fan; each oxygen generating unit comprises an oxygen generator, a regulator and a flow detector which are mutually connected through pipelines, wherein the flow detector is used for detecting the air flow in the pipelines, and the regulator is used for controlling the air flow in the pipelines.
In some embodiments, the oxygen enrichment device further comprises a controller in communication with the flow detector and the regulator, the regulator being sized according to the amount of air flow.
In some embodiments, the controller is in communication with the oxygenerator and is capable of controlling the opening and closing of the oxygenerator.
In some embodiments, in each oxygen generating unit, a flow detector is disposed downstream of the regulator.
In some embodiments, the oxygen enrichment device further comprises an oxygen content detector disposed at the suction inlet of the blower, capable of detecting the oxygen content at the air inlet of the blower.
In some embodiments, the oxygen content detector is communicatively coupled to a controller that controls the opening and closing of the oxygenerator based on the oxygen content.
In some embodiments, a valve body is disposed at the junction of the oxygen generating unit and the blower inlet, the valve body being disposed upstream of the oxygen content detector.
In some embodiments, a controller is communicatively coupled to the valve body, the controller controlling the opening and closing of the valve body based on the oxygen content.
In some embodiments, the oxygen enrichment device further comprises an audible and visual alarm device, and the audible and visual alarm device is in communication with the controller.
In some embodiments, the oxygen content detector is a laser oxygen content analyzer.
In this application embodiment provided is arranged in the blast furnace oxygen enrichment facility, all set up the oxygen generating unit respectively at the air inlet and the air outlet of fan, each oxygen generating unit independently moves, when the oxygen generating unit of oxygen suppliment needs maintenance or other reasons to stop operating, can provide with oxygen by other oxygen generating units and realize complementary operation, guarantee the oxygen demand of blast furnace, reduce the oxygen boosting and adjust the degree of difficulty, utilize flow detector to obtain the air flow in the pipeline, according to the production needs of blast furnace, carry out fast adjustment to the oxygen supply of blast furnace.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the embodiments of the present application, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure for an oxygen enrichment device for a blast furnace according to an embodiment of the present application.
Reference numerals in the specific embodiments are as follows:
100. a blower;
200. a blast furnace;
300. an oxygen generator; 30. an oxygen production unit; 31. an oxygenerator; 32. a regulator; 33. a flow detector;
400. a controller;
500. an oxygen content detector;
600. a valve body;
700. and an audible and visual alarm device.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below, and in order to make the objectives, technical solutions, and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 other like elements in a process, method, article or apparatus that comprises the element.
It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the patent.
It should also be noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The blast furnace is one of main production equipment in the steel industry, wherein an oxygen-enriched system is one of the keys of normal operation of the blast furnace, the traditional oxygen supply mode is to produce oxygen through air separation equipment and to add oxygen into an air supply pipe behind a fan, but when the oxygen-enriched yield is adjusted in a large range in the mode, the oxygen yield is adjusted by stopping an oxygen generator set or increasing or decreasing the oxygen yield of oxygen low-temperature air separation equipment, because the oxygen generator set is stopped for a long time for process reasons (36-48 hours are generally required from the start of an air compressor to the start of air separation to produce qualified oxygen, and once the air separation is started, the oxygen yield is limited in the condition that the oxygen generator is not stopped, the oxygen supply requirement cannot be met, and the oxygen-enriched consumption of the blast furnace is required to be adjusted rapidly in real time according to the blast furnace condition, so the problems of high difficulty in adjusting the oxygen-enriched yield, poor adjusting effect and the like exist.
Micro-regulation: the micro-finger regulating quantity is smaller than that of one oxygenerator.
The embodiment of the application provides an oxygen enrichment device for a blast furnace, which comprises a fan 100; the blast furnace 200 is connected with an air outlet of the fan 100; the oxygen generator 300 is connected to the blast furnace 200, the oxygen generator 300 comprises at least two oxygen generating units 30 which are connected with each other in parallel, at least one of the at least two oxygen generating units 30 is connected with the air inlet of the fan 100, and at least one other oxygen generating unit is connected with the air outlet of the fan 100; wherein each oxygen generating unit 30 includes an oxygen generator 31, a regulator 32 and a flow detector 33 connected to each other through a pipeline, the flow detector 33 is used for detecting the air flow in the pipeline, and the regulator 32 is used for controlling the air flow in the pipeline.
It may be appreciated that in the oxygen enrichment device provided in this embodiment of the present application, the oxygen generating units 30 are respectively disposed at the air inlet and the air outlet of the blower 100, each oxygen generating unit 30 operates independently, when the oxygen generating unit 30 supplying oxygen needs to be maintained or is stopped for other reasons, the oxygen generating units 30 can supply oxygen to realize complementary operation, dual-system security is provided for the blast furnace, so as to ensure the oxygen consumption requirement of the blast furnace, reduce the difficulty of oxygen enrichment adjustment, obtain the air flow in the pipeline by using the flow detector 33, and perform micro adjustment on the oxygen supply of the blast furnace 200 according to the production requirement of the blast furnace 200.
In general, oxygen is supplied to the blast furnace 200 by the oxygen generating unit 30 connected to the air inlet, and the oxygen generating unit 30 located at the air outlet is replenished and micro-regulated, and when the oxygen generating unit 30 in front of the fan 100 cannot meet the oxygen demand of the blast furnace 200, the oxygen generating unit 30 located behind the fan 100 is replenished.
In some embodiments, the oxygen enrichment device further includes a controller 400 communicatively coupled to the flow detector 33 and the regulator 32 to adjust the size of the regulator 32 based on the amount of air flow.
In some embodiments, controller 400 is communicatively coupled to oxygenerator 31 and is capable of controlling the opening and closing of oxygenerator 31.
It will be appreciated that the controller 400 is connected to each of the oxygenerators 31, and when the oxygen generating unit 30 for supplying oxygen is required to be maintained or is shut down for other reasons, the controller 400 controls the current oxygenerator 31 to stop working, and the other oxygenerators 31 supply oxygen instead to realize complementary operation.
The controller 400 is arranged to collect the information of the air flow in the acquired pipeline intensively, and the opening size of the regulator 32 is controlled according to the production requirement of the blast furnace 200, so that the micro-regulation of oxygen supply to the blast furnace 200 is realized.
The oxygenerator 31 is a variable adsorption oxygenerator, and the variable adsorption oxygenerator is different from the traditional air separation oxygenerator in technology, and does not need additional oxygen-nitrogen pressurization conveying equipment and cooling facilities, so that links such as oxygen pressurization, conveying, re-depressurization and the like are omitted, part of energy consumption can be saved, rated oxygen content can be produced in a few minutes of starting up, and the adjusting time of oxygen yield can be greatly shortened.
In some embodiments, in each oxygen generating unit 30, a flow detector 33 is disposed downstream of the regulator 32.
It will be appreciated that by locating the flow detector 33 downstream of the regulator 32, the amount of airflow through the flow detector 33 may be more accurately detected.
In some embodiments, the oxygen enrichment device further comprises an oxygen content detector 500, wherein the oxygen content detector 500 is arranged at the suction inlet of the blower 100 and is capable of detecting the oxygen content at the air inlet of the blower 100.
In some embodiments, oxygen content detector 500 is communicatively coupled to controller 400, and controller 400 controls the opening and closing of oxygenerator 31 based on the oxygen content.
In some embodiments, a valve body 600 is disposed at the connection between the oxygen generating unit 30 and the inlet of the blower 100, and the valve body 600 is disposed upstream of the oxygen content detector 500.
In some embodiments, the controller 400 is communicatively coupled to the valve body 600, and the controller 400 controls the opening and closing of the valve body 600 according to the oxygen content.
In some embodiments, the oxygen enrichment device further comprises an audible and visual alarm 700, wherein the audible and visual alarm 700 is communicatively coupled to the controller 400.
In some embodiments, the oxygen content detector 500 is a laser oxygen content analyzer.
It can be understood that by setting the oxygen content detector 500 at the air inlet of the blower 100, the oxygen content parameter at the air inlet of the blower 100 can be detected, and the obtained oxygen content parameter is transmitted to the controller 400, the controller 400 presets a preset value of the oxygen content parameter, and under the condition of the preset value, normal operation of the blower can be ensured, the preset value comprises an alarm preset value and an oxygen stopping preset value (the alarm preset value is 27%, the oxygen stopping preset value is 27.5%), when the oxygen content value reaches the alarm preset value, an alarm is given, a worker is reminded of the operation safety of the blower 100, and when the oxygen content reaches the oxygen stopping preset value, the controller 400 closes the valve body 600, stops oxygen delivery, and simultaneously controls the oxygen generator 31 to stop oxygen production.
As an example, the laser oxygen analyzer is selected as the oxygen content detector 500, and the laser oxygen analyzer is not affected by dust and background gas because the laser oxygen analyzer is subject to the attribute of its own working principle, so that the oxygen content can be measured more accurately.
Under the condition that the safe operation of the blower 100 is satisfied, the controller 400 preferably selects the oxygenerator 31 in front of the blower 100 to supply oxygen to the blast furnace 200 during the complementary operation, and preferably controls the regulator 32 in the oxygen generating unit 30 behind the blower 100 to perform the micro-adjustment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. An oxygen enrichment device for a blast furnace, comprising:
a blower;
the blast furnace is connected with an air outlet of the fan;
the oxygen generator is connected to the blast furnace and comprises at least two oxygen generating units which are connected with each other in parallel, at least one of the at least two oxygen generating units is connected with an air inlet of the fan, and at least one other oxygen generating unit is connected with an air outlet of the fan;
each oxygen generating unit comprises an oxygen generator, a regulator and a flow detector which are mutually connected through pipelines, wherein the flow detector is used for detecting the air flow in the pipelines, and the regulator is used for controlling the air flow in the pipelines.
2. The oxygen enrichment device of claim 1, further comprising a controller in communication with the flow detector and regulator, the regulator being sized according to the flow of air.
3. The oxygen enrichment device of claim 2, wherein the controller is communicatively coupled to the oxygenerator and is capable of controlling the opening and closing of the oxygenerator.
4. The oxygen enrichment device as claimed in claim 1, wherein in each of the oxygen generating units, the flow detector is disposed downstream of the regulator.
5. The oxygen enrichment device of claim 2, further comprising an oxygen content detector disposed at the suction inlet of the blower that is capable of detecting the oxygen content at the blower inlet.
6. The oxygen enrichment device of claim 5, wherein the oxygen content detector is communicatively coupled to the controller, and wherein the controller controls the start and stop of the oxygenerator based on the oxygen content.
7. The oxygen enrichment device as claimed in claim 5, wherein a valve body is provided at a junction of the oxygen generating unit and the blower inlet, the valve body being provided upstream of the oxygen content detector.
8. The oxygen-enriched device of claim 7, wherein the controller is communicatively coupled to the valve body, and wherein the controller controls the opening and closing of the valve body based on the oxygen content.
9. The oxygen enrichment device of claim 7, further comprising an audible and visual alarm device in communication with the controller.
10. The oxygen enrichment device of claim 6, wherein the oxygen content detector is a laser oxygen content analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923346.XU CN220520534U (en) | 2023-07-20 | 2023-07-20 | Oxygen-enriching device for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321923346.XU CN220520534U (en) | 2023-07-20 | 2023-07-20 | Oxygen-enriching device for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220520534U true CN220520534U (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321923346.XU Active CN220520534U (en) | 2023-07-20 | 2023-07-20 | Oxygen-enriching device for blast furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN220520534U (en) |
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- 2023-07-20 CN CN202321923346.XU patent/CN220520534U/en active Active
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