CN105861770A - Injection tank pressure relief device for blast furnace coal injection system - Google Patents
Injection tank pressure relief device for blast furnace coal injection system Download PDFInfo
- Publication number
- CN105861770A CN105861770A CN201610428523.5A CN201610428523A CN105861770A CN 105861770 A CN105861770 A CN 105861770A CN 201610428523 A CN201610428523 A CN 201610428523A CN 105861770 A CN105861770 A CN 105861770A
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- China
- Prior art keywords
- pressure
- pressure relief
- valve
- injection system
- main exhaust
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
Abstract
The invention discloses an injection tank pressure relief device for a blast furnace coal injection system, and provides an injection tank pressure relief device with a good sealing property for the blast furnace coal injection system mainly for the problem that an existing blast furnace coal injection system is poor in sealing property. The injection tank pressure relief device comprises pressure relief pipelines, a bag-type powder collector and an air exhaust unit, an inlet and an outlet of each pressure relief pipeline are communicated with an injection tank and a dust hopper on the lower portion of the bag-type powder collector respectively, each pressure relief pipeline is provided with a pressure relief valve group, and an air outlet of the bag-type powder collector is communicated with the air exhaust unit. According to the injection tank pressure relief device for the blast furnace coal injection system, a bunker top dust remover does not need to be arranged on a coal powder bunker, therefore, the top of the coal powder bunker is completely sealed, air is prevented from entering the coal powder bunker, and extremely low oxygen content in the coal powder bunker is maintained.
Description
Technical field
The present invention relates to a kind of bf coal injection system winding-up tank pressure relief device.
Background technology
In modern blast furnace ironmaking technology, pulverized coal injection in blast furnace is one of its energy-saving and cost-reducing important means, is also
One of requisite technology of modern blast furnace.In conventional design, the relief pipeline of pulverized coal injection winding-up tank
All it is directly accessed in Pulverized Coal Bin, a roof scrubber is set in this Pulverized Coal Bin simultaneously, for jetting tank
Pressure release, purging.But in actual production, on the one hand the most usually because the tightness of this roof scrubber equipment not
Foot causes the oxygen content in Pulverized Coal Bin higher, especially for when producing mixed coal, brings to normal production
Potential safety hazard, on the other hand because the fault rate of this equipment is higher, repair and maintenance difficulty is big, has a strong impact on
Normal production.
Additionally, for the setting of relief valve valve, Chinese patent CN201545860U on winding-up tank relief pipeline
Disclose a kind of relief valve and the pressure release mode of restriction orifice (group), and in its bypass, be provided with pressure release tune
Joint valve, in relief pipeline accesses Pulverized Coal Bin the most at last, the venting duration of this pressure release mode is longer, causes spray
Blowing tank tank switching cycle stretch-out, the operation to large-blowing coal is unfavorable.Another way is only to arrange a relief valve,
The speed when high pressure relief, relatively big to the impact of coal dust in Pulverized Coal Bin, roof scrubber is operated at full capacity,
Often there will be coal dust to be discharged, dust removing effects is the best, also the most unfavorable to safety in production.
Summary of the invention
For the problems referred to above, the present invention provides the bf coal injection system winding-up tank pressure release of a kind of favorable sealing property
Device.
For reaching above-mentioned purpose, bf coal injection system of the present invention winding-up tank pressure relief device, including pressure relief pipe,
Bladder type powder recepting device and air draft unit, the entrance and exit of described pressure relief pipe respectively with winding-up tank and described pocket type
Powder collector connects, and described pressure relief pipe is provided with relief valve group；Described bladder type powder recepting device and described exhaust blower
Group connection.
Further, described relief valve group includes high-pressure decompression valve and low-voltage decompression valve, described high-pressure decompression valve
In parallel with described low-voltage decompression valve.
Further, described air draft unit includes main exhaust fan and the pressure release blower fan being connected in parallel in pipeline, described
The entrance of main exhaust fan is provided with valve, and outlet and the entrance of described pressure release blower fan are provided with valve.
Further, described air draft unit includes main exhaust fan and pressure release blower fan, described main exhaust fan and described
The outlet of pressure release blower fan and atmosphere, the entrance of described main exhaust fan and described pressure release blower fan is provided with valve
Door.
Filter mechanism that further, described pressure relief pipe includes being successively set on pipeline along airflow direction,
First metal hose, relief valve group and the second metal hose.
Further, pressure measuring device, described pressure measuring device and control it are provided with in described winding-up tank
Device communication connects, and the pressure signal that described controller transmits according to pressure measuring device controls described relief valve group.
Specifically, described main exhaust fan is provided with the monitor of monitoring main exhaust fan duty, described inspection
Survey device to be connected with controller communication, the duty of the main exhaust fan that described controller monitors according to monitor
Control the valve of main exhaust fan entrance, pressure release blower fan and the valve of pressure release blower fan entry and exit.
Need not arrange roof scrubber in the Pulverized Coal Bin of bf coal injection system of the present invention winding-up tank pressure relief device,
So, whole Pulverized Coal Bin is exactly the equipment of an integral sealing, therefore, does not haves outside air and enters coal
The situation of powder cabin, therefore, the oxygen content in the Pulverized Coal Bin of the present invention can be maintained at an extremely low ratio,
Do not have danger.
The winding-up tank of bf coal injection system of the present invention winding-up tank pressure relief device is by pipeline with bladder type powder recepting device even
Logical, bladder type powder recepting device connects with air draft unit, the outwardly air draft of air draft unit, and air will not pass through exhaust blower
Group is back to bladder type powder recepting device, it is ensured that whole coal injection system has a relatively low oxygen content.
Bf coal injection system of the present invention winding-up tank pressure relief device takes full advantage of existing equipment, the investment of reconstruction
Few, and, bf coal injection system of the present invention winding-up tank pressure relief device compact conformation, occupy little space.
Accompanying drawing explanation
Fig. 1 is bf coal injection system of the present invention winding-up tank pressure relief device.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention will be further described.
Embodiment 1
As it is shown in figure 1, the present embodiment bf coal injection system winding-up tank pressure relief device, including pressure relief pipe 6,
Bladder type powder recepting device 3 and air draft unit, the entrance and exit of described pressure relief pipe 6 respectively with winding-up tank 11,12
Connect with described bladder type powder recepting device 3, described pressure relief pipe 6 is provided with relief valve group, described relief valve group
Including a relief valve；Described bladder type powder recepting device 3 connects with described air draft unit, and described air draft unit includes
The main exhaust fan 4 being connected in parallel in pipeline and pressure release blower fan 5, the entrance of described main exhaust fan 4 is provided with valve,
The outlet of described pressure release blower fan 5 and entrance are provided with valve 106,107.
Being provided with pressure measuring device in described winding-up tank 11,12, described pressure measuring device leads to controller
News connect, and the pressure signal that described controller transmits according to pressure measuring device controls described relief valve group.
The monitor of monitoring main exhaust fan 4 duty, described detector it is provided with on described main exhaust fan 4
It is connected with controller communication, the duty control of the main exhaust fan 4 that described controller monitors according to monitor
The valve 106,107 of the valve of main exhaust fan 4 entrance processed, pressure release blower fan 5 and pressure release blower fan 5 entry and exit.
The duty of the bf coal injection system winding-up tank pressure relief device of the present embodiment includes the following two kinds:
When pulverized coal preparation system is in and normally produces, keep main exhaust fan 4 normally to work, pressure release blower fan 5 is closed
Close, after valve 106,107 before and after pressure release blower fan 5 closes, open relief valve, until winding-up tank 11,12
Interior pressure release is complete, subsequently enters filling puffing powder program, closes relief valve after powder to be installed.
When pulverized coal preparation system is not in production status, close the valve of main exhaust fan 4 import department, open pressure release
Valve 106,107 before and after blower fan 5, opens pressure release blower fan 5, is then turned on relief valve, until winding-up tank
11,12 enter filling puffing powder program, close relief valve after powder to be installed, close pressure release wind the most successively
Machine 5, valve 106 and valve 107.
Which kind of duty no matter above two duty it can be seen that be in, to winding-up tank 11,12
When carrying out pressure release, all bladder type powder recepting device 3 can be made to be in by the work of pressure release blower fan 5 or main exhaust fan 4 micro-
The state of negative pressure, but, due to main exhaust fan 4 or the effect of pressure release blower fan 5, do not result in air along
The situation of pipeline backflow, therefore, will not circulate with outside air in the space in bladder type powder recepting device 3.
Bf coal injection system winding-up tank pressure relief device Pulverized Coal Bin 2 top of the present invention need not arrange storehouse top dedusting
Device, is set to Pulverized Coal Bin 2 top the most airtight top, so, Pulverized Coal Bin 2 is greatly improved
Sealing property, effectively control the oxygen content in Pulverized Coal Bin 2, carry for injecting mixed coal and safety in production
Supply favourable guarantee.
In the present embodiment, relief pipeline end accesses bag filter ash bucket, it is to avoid because winding-up tank 11,12 is let out
Press and the impact of coal dust in Pulverized Coal Bin 2 is caused industrial accident.
In the present embodiment, the valve of pressure release blower fan 5 and main exhaust fan 4 porch is used for controlling pressure release blower fan 5
With whether connecting of main exhaust fan 4, and the blower fan in pressure release blower fan 5 exit, then it is owing to avoiding main air draft
The air-flow that machine semi-finals is big produces impact to pressure release blower fan 5 bearing, it also avoid simultaneously and works at main exhaust fan 4
Time the gas discharged carry dust and enter in pressure release blower fan 5, accumulate dust in causing pressure release blower fan 5.
Certainly, when pulverized coal preparation system is under non-production status, if pressure release blower fan 5 breaks down, it is possible to
With the valve 106,107 before and after closedown pressure release blower fan 5, open main exhaust fan 4 and carry out air draft.
Embodiment 2
As it is shown in figure 1, the present embodiment bf coal injection system winding-up tank pressure relief device, including pressure relief pipe 6,
Bladder type powder recepting device 3 and air draft unit, the entrance and exit of described pressure relief pipe 6 respectively with winding-up tank 11,12
Connect with described bladder type powder recepting device 3, described pressure relief pipe 6 is provided with relief valve group, described relief valve group
Including high-pressure decompression valve 103 and low-voltage decompression valve 104, described high-pressure decompression valve 103 and described low-voltage decompression valve
104 is in parallel；Described bladder type powder recepting device 3 connects with described air draft unit, and described air draft unit includes main exhaust fan
4 and pressure release blower fan 5, described main exhaust fan 4 and the outlet of described pressure release blower fan 5 and atmosphere, described master
The entrance of exhaust blower 4 and described pressure release blower fan 5 is provided with valve 106,107.
Being provided with pressure measuring device in described winding-up tank 11,12, described pressure measuring device leads to controller
News connect, and the pressure signal that described controller transmits according to pressure measuring device controls described relief valve group.
The monitor of monitoring main exhaust fan 4 duty, described detector it is provided with on described main exhaust fan 4
It is connected with controller communication, the duty control of the main exhaust fan 4 that described controller monitors according to monitor
The valve 106,107 of the valve of main exhaust fan 4 entrance processed, pressure release blower fan 5 and pressure release blower fan 5 entry and exit.
The bf coal injection system winding-up tank pressure relief device of the present embodiment has two kinds of duties:
When pulverized coal preparation system normally produces, keep main exhaust fan 4 normally work, close pressure release blower fan 5 and
Valve 106,107 before and after pressure release blower fan 5, opens high-pressure decompression valve 103, when letting out in winding-up tank 11,12
Low-voltage decompression valve 104 is opened, until pressure release is complete, with laggard in winding-up tank 11,12 when being pressed onto setting pressure
Enter filling puffing powder program, after powder to be installed, simultaneously close off high-pressure decompression valve 103 and low-voltage decompression valve 104.
When pulverized coal preparation system is not in production status, close main exhaust fan 4, open the valve before and after pressure release blower fan 5
Door 106,107, opens pressure release blower fan 5, is then turned on high-pressure decompression valve 103, when in winding-up tank 11,12
Pressure release opens low-voltage decompression valve 104 to when setting pressure, until winding-up tank 11,12 enters filling puffing powder journey
Sequence, simultaneously closes off high-pressure decompression valve 103 and low-voltage decompression valve 104, closes the most successively and let out after powder to be installed
Pressure fan 5, valve 106 and valve 107.
The present embodiment is arranged in parallel high-pressure decompression valve 103 and low-voltage decompression valve 104, is conducive to tank of jetting
11, the quick pressure releasing of 12, shortens the tank switching cycle, and the large-blowing coal for blast furnace provides the time to ensure；
Pressure release blower fan 5 and main exhaust fan 4 are divided into two-way by the present embodiment, directly empty, so, and pressure release wind
The work of machine 5 and main exhaust fan 4 is independent of each other, and also allows for maintenance.
Certainly, during in the present embodiment, the plan of establishment of air draft unit can also be applied to embodiment 1, and implement
The plan of establishment of the air draft unit in example 1 can also be applied in the present embodiment.
Embodiment 3
On the basis of above-described embodiment, pressure relief pipe 6 described in the present embodiment includes along airflow direction successively
Filter mechanism the 101, first metal hose 102, relief valve group and the second metal hose 105 being arranged on pipeline.
Due to winding-up tank 11,12 need weigh, in the present embodiment, by pressure relief pipe 6 near winding-up tank
11, one end of 12 arranges the first metal hose 102, uses connection by metal hose, claims winding-up tank 11,12
The impact of weight is very little, it is ensured that the title of winding-up tank 11,12 is not affected by relief pipeline and equipment, has
It is beneficial to being precisely controlled of winding-up process；
Vibration operationally can be produced due to bladder type powder recepting device 3, in long vibration processes, connected
Pipeline is susceptible to fatigue rupture, therefore, for the service life of extension device, by close for pressure relief pipe 6
One end of bladder type powder recepting device 3 arranges the second metal hose 105；
Further, since be the mixture of gas and powder in winding-up tank 11,12, when pressure release, if do not entered
Row processes, and by pressure relief pipe 6 also can be the mixture of gas and powder, and this mixture passes through pipeline
Time, pipeline is produced and washes away, cause the abrasion of pipeline, therefore, embodiment own is provided with filter mechanism 101
Setting, decrease in high-low pressure pressure leak process and because dust content is too high, pipeline washed away, extend pipeline
Service life.
Above, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, and appoints
How those familiar with the art is in the technical scope that the invention discloses, the change that can readily occur in
Or replace, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with
The protection domain that claim is defined is as the criterion.
Claims (7)
1. a bf coal injection system winding-up tank pressure relief device, including pressure relief pipe, bladder type powder recepting device and air draft
Unit, it is characterised in that: the entrance and exit of described pressure relief pipe respectively with winding-up tank and described bladder type powder recepting
Device connects, and described pressure relief pipe is provided with relief valve group；Described bladder type powder recepting device is with described air draft unit even
Logical.
2. bf coal injection system winding-up tank pressure relief device as claimed in claim 1, it is characterised in that let out described in:
Pressure valve group includes that high-pressure decompression valve and low-voltage decompression valve, described high-pressure decompression valve and described low-voltage decompression valve are in parallel.
3. bf coal injection system winding-up tank pressure relief device as claimed in claim 1, it is characterised in that: described row
Blower fan group includes main exhaust fan and the pressure release blower fan being connected in parallel in pipeline, and the entrance of described main exhaust fan is provided with
Valve, outlet and the entrance of described pressure release blower fan are provided with valve.
4. bf coal injection system winding-up tank pressure relief device as claimed in claim 1, it is characterised in that: described row
Blower fan group includes main exhaust fan and pressure release blower fan, described main exhaust fan and the outlet of described pressure release blower fan and air
Connection, the entrance of described main exhaust fan and described pressure release blower fan is provided with valve.
5. bf coal injection system winding-up tank pressure relief device as claimed in claim 1, it is characterised in that let out described in:
Filter mechanism that pressure pipe road includes being successively set on pipeline along airflow direction, the first metal hose, relief valve
Group and the second metal hose.
6. bf coal injection system winding-up tank pressure relief device as claimed in claim 1, it is characterised in that: described spray
Being provided with pressure measuring device in blowing tank, described pressure measuring device is connected with controller communication, described control
The pressure signal that device transmits according to pressure measuring device controls described relief valve group.
7. bf coal injection system winding-up tank pressure relief device as described in claim 3 or 4, it is characterised in that: institute
Stating the monitor being provided with monitoring main exhaust fan duty on main exhaust fan, described detector leads to controller
News connect, and the working state control main exhaust fan of the main exhaust fan that described controller monitors according to monitor enters
Valve, pressure release blower fan and the valve of pressure release blower fan entry and exit of mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610428523.5A CN105861770A (en) | 2016-06-15 | 2016-06-15 | Injection tank pressure relief device for blast furnace coal injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610428523.5A CN105861770A (en) | 2016-06-15 | 2016-06-15 | Injection tank pressure relief device for blast furnace coal injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105861770A true CN105861770A (en) | 2016-08-17 |
Family
ID=56650702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610428523.5A Pending CN105861770A (en) | 2016-06-15 | 2016-06-15 | Injection tank pressure relief device for blast furnace coal injection system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105861770A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724777A (en) * | 2019-11-18 | 2020-01-24 | 大峘集团有限公司 | Coal powder injection tank pressure relief system and working method thereof |
| CN111500805A (en) * | 2020-05-09 | 2020-08-07 | 中冶华天工程技术有限公司 | Novel coal injection tank for blast furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624351A (en) * | 2016-03-17 | 2016-06-01 | 中冶华天南京工程技术有限公司 | Pulverized coal jetting, pressure releasing and powder returning technology and system |
| CN205893304U (en) * | 2016-06-15 | 2017-01-18 | 中冶华天南京工程技术有限公司 | Blast furnace coal injection system jetting jar pressure relief device |
-
2016
- 2016-06-15 CN CN201610428523.5A patent/CN105861770A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624351A (en) * | 2016-03-17 | 2016-06-01 | 中冶华天南京工程技术有限公司 | Pulverized coal jetting, pressure releasing and powder returning technology and system |
| CN205893304U (en) * | 2016-06-15 | 2017-01-18 | 中冶华天南京工程技术有限公司 | Blast furnace coal injection system jetting jar pressure relief device |
Non-Patent Citations (3)
| Title |
|---|
| 金艳娟: "《高炉喷煤技术》", 31 March 2005, 冶金工业出版社 * |
| 项钟庸: "《炼铁工艺设计理论与实践》", 30 November 2007, 冶金工业出版社 * |
| 首钢钢铁研究所: "《高炉喷吹煤粉技术文集》", 30 November 1994 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724777A (en) * | 2019-11-18 | 2020-01-24 | 大峘集团有限公司 | Coal powder injection tank pressure relief system and working method thereof |
| CN111500805A (en) * | 2020-05-09 | 2020-08-07 | 中冶华天工程技术有限公司 | Novel coal injection tank for blast furnace |
| CN111500805B (en) * | 2020-05-09 | 2021-11-19 | 中冶华天工程技术有限公司 | Blast furnace coal injection tank |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |
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