CN113215342A - Closed ash discharging device of blast furnace gravity dust collector and using method thereof - Google Patents
Closed ash discharging device of blast furnace gravity dust collector and using method thereof Download PDFInfo
- Publication number
- CN113215342A CN113215342A CN202110057988.5A CN202110057988A CN113215342A CN 113215342 A CN113215342 A CN 113215342A CN 202110057988 A CN202110057988 A CN 202110057988A CN 113215342 A CN113215342 A CN 113215342A
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- China
- Prior art keywords
- dust collector
- blast furnace
- gravity dust
- transition
- ash
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- 239000000428 dust Substances 0.000 title claims abstract description 56
- 230000005484 gravity Effects 0.000 title claims abstract description 53
- 238000007599 discharging Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000003034 coal gas Substances 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000002956 ash Substances 0.000 claims description 59
- 210000001503 joint Anatomy 0.000 claims description 4
- 239000010883 coal ash Substances 0.000 claims description 3
- 239000012716 precipitator Substances 0.000 claims 1
- 230000008602 contraction Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a closed ash discharging device of a blast furnace gravity dust collector and a using method thereof, wherein the device comprises: a closed ash discharging device of a blast furnace gravity dust collector comprises: the gas downtake, gravity dust collector, transition jar and the hopper that connects that from top to bottom communicate in proper order, the gas downtake is used for communicateing the furnace roof of blast furnace, in order with the coal gas and the ash thing of blast furnace roof discharge, the transition jar is equipped with detection device, detection device is used for detecting pressure and material level in the transition jar, the transition jar with connect through rubber hose sealing connection between the hopper. The closed ash discharging device of the blast furnace gravity dust collector ensures that the leakage is not easy to occur in the ash discharging process through the arrangement of the rubber hose.
Description
Technical Field
The invention belongs to the technical field of blast furnace top equipment, and particularly relates to a closed ash discharging device of a blast furnace gravity dust collector, a using method of the closed ash discharging device and a straightening machine of the closed ash discharging device.
Background
The blast furnace top gas and the dust-containing substances pass through the blast furnace top ascending pipe and the descending pipe and then enter the gravity dust collector. Under the effect of gravity, the fly ash falls to gravity dust collector bottom deposit, and blast furnace operating personnel regularly opens gravity dust collector let-off valve, discharges the inside ash of gravity dust collector.
At present, blast furnace gravity dust remover bottom all is provided with puts grey valve, installs at the ash valve lower extreme of putting and puts grey machine, and the universal ash machine of putting is cylinder rotary type structure, through rotating, drives gravity ash whereabouts, and the rethread water spray dilutes gravity ash, reducible raise dust of putting the ash in-process. And a transition bin is additionally arranged below an ash discharge valve of the gravity dust collector in some enterprises, so that the drifting in the ash discharge process can be reduced, and the overflow of coal gas can also be reduced.
The current operation mode is generally as follows: the ash discharging machine is opened and rotates, the spraying water is opened, the ash discharging valve is opened, and the water in the gravity dust collector falls into the site ash receiving position under the action of gravity and the pressure in the dust collector.
The present ash mode of putting is difficult to avoid putting the harm that the coal gas that ash in-process spilled over from gravity dust collector brought to putting ash operating personnel, and coal gas concentration is also higher, and is great to putting ash personnel's healthy influence, and the gravity ash contains a large amount of harmful elements moreover, flows into escape canal polluted environment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the closed ash discharging device of the gravity dust collector of the blast furnace, which is not easy to leak in the ash discharging process through the arrangement of a rubber hose.
The technical purpose of the invention is realized by the following technical scheme: a closed ash discharging device of a blast furnace gravity dust collector comprises: the gas downtake, gravity dust collector, transition jar and the hopper that connects that from top to bottom communicate in proper order, the gas downtake is used for communicateing the furnace roof of blast furnace, in order with the coal gas and the ash thing of blast furnace roof discharge, the transition jar is equipped with detection device, detection device is used for detecting pressure and material level in the transition jar, the transition jar with connect through rubber hose sealing connection between the hopper.
In one embodiment, the opening at the upper end of the receiving hopper is reduced outwards to form a reducing opening structure.
In one embodiment, the rubber hose is sleeved in an opening at the upper end of the receiving hopper.
In one embodiment, the opening width of the rubber hose is smaller than the opening width of the upper end of the receiving hopper.
In one embodiment, the transition tank is communicated with an exhaust pipe, and the exhaust pipe is used for exhausting coal gas.
In one embodiment, the end of the rubber hose connected with the material receiving hopper is provided with a sealing bulge in an outward protruding manner, and the sealing bulge is opened at an opening at the upper end of the material receiving hopper.
In one embodiment, the detection device comprises a pressure gauge, and the pressure gauge is arranged at one end of the transition tank close to the gravity dust collector and used for detecting the pressure in the transition tank.
In one embodiment, the detection device further comprises a level indicator, wherein the level indicator is arranged at one end, close to the gravity dust collector, of the transition tank and used for detecting the level of coal gas and ash materials in the transition tank.
In one embodiment, the transport vehicle is arranged on the receiving hopper and can move on the ground or a track arranged on the ground to transport the receiving hopper.
The invention also provides a using method of the closed ash discharging device of the blast furnace gravity dust collector, which comprises the following steps:
opening a valve of an exhaust pipe to enable high-pressure coal gas to enter a transition tank through the exhaust pipe, stamping the transition tank, and closing the valve of the exhaust pipe when the pressure of the transition tank is detected to be the same as the high-pressure coal gas;
opening the ash discharging valve, and closing the ash discharging valve when the material level indicator displays a material full level signal of the transition tank;
and the contracting port of the receiving hopper is butted with the rubber hose below the transition pipe, and the rubber hose extends into the locking port of the receiving hopper.
The valve of the transition tank is opened, so that the ash flows into the material receiving hopper from the transition tank, when the ash flows into the rubber hose, the pressure in the tank and the ash cause the rubber hose to extrude and expand, and the rubber hose is completely sealed on the interface and the shrinkage port.
And when the level indicator shows that the material level in the transition tank is 0, closing the valve of the transition tank.
In conclusion, the invention has the following beneficial effects:
the invention provides a closed ash discharging device of a blast furnace gravity dust collector, which comprises: the closed ash discharging device of the blast furnace gravity dust collector is characterized by comprising a gas descending pipe, a gravity dust collector, a transition tank and a receiving hopper, wherein the gas descending pipe, the gravity dust collector, the transition tank and the receiving hopper are sequentially communicated from top to bottom, the gas descending pipe is used for being communicated with the top of a blast furnace so as to discharge gas and ash on the top of the blast furnace, the transition tank is provided with a detection device, the detection device is used for detecting the pressure and the material level in the transition tank, and the transition tank is hermetically connected with the receiving hopper through a rubber hose.
Drawings
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of a closed type ash discharge device of a blast furnace gravity dust collector of the invention.
In the figure: 1. a blast furnace; 2. a gas down pipe; 3. a gravity dust collector; 4. a cloth bag; 5. an exhaust pipe; 6. A transition tank; 7. a receiving hopper; 8. a track; 10. a transport vehicle; 11. a pressure gauge; 12. a level gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The invention provides a closed ash discharging device of a gravity dust collector 3 of a blast furnace 1, which comprises: the closed dust discharging device comprises a gas descending pipe 2, a gravity dust collector 3, a transition tank 6 and a receiving hopper 7 which are sequentially communicated from top to bottom, wherein the gas descending pipe 2 is used for being communicated with the top of the blast furnace 1 so as to discharge gas and dust on the top of the blast furnace 1, the transition tank 6 is provided with a detection device, the detection device is used for detecting the pressure and the material level in the transition tank 6, and the transition tank 6 is connected with the receiving hopper 7 in a sealing mode through a rubber hose.
Referring to fig. 1, the enclosed ash discharge device of the gravity dust collector 3 of the blast furnace 1 includes: the technical purpose of the invention is realized by the following technical scheme: a closed ash discharging device of a blast furnace 1 gravity dust collector 3 comprises: gas downtake 2, gravity dust collector 3, transition jar 6 and connect hopper 7 that from top to bottom communicate in proper order, gas downtake 2 is used for communicateing 1 furnace roof of blast furnace, in order to incite somebody to action the coal gas and the grey thing of 1 furnace roof of blast furnace discharge, transition jar 6 is equipped with detection device, detection device is used for detecting pressure and material level in the transition jar 6, transition jar 6 with connect through rubber hose sealing connection between the hopper 7.
Wherein the transition tank 6 is connected below the gravity dust collector 3 through an ash discharge valve, and the volume of the transition tank 6 can be 2m-5m3And the transition tank 6 is made of steel with higher hardness.
Further, the opening at the upper end of the receiving hopper 7 is outwards reduced to form a diameter of the contraction opening structure which is 1mm-2mm larger than the diameter of the rubber hose, and the contraction opening structure can be in butt joint sealing with the rubber hose.
Specifically, the rubber hose is sleeved in an opening at the upper end of the receiving hopper 7.
It is worth mentioning that the opening width of the rubber hose is smaller than the opening width of the upper end of the receiving hopper 7.
It can be understood that the transition tank 6 is communicated with an exhaust pipe 5, the exhaust pipe 5 is used for discharging coal gas, and the diameter of the exhaust pipe is 30mm-50 mm. And the exhaust pipe 6 is connected with a coarse gas pipeline of a bag-type dust removal system in a butt joint mode under the control of an external valve, a section of metal hollow pipeline with the length of 200-300 mm and the diameter of 150-200 mm is further installed at the lower end of the valve, and a rubber hose with the length of 100-150 mm and the diameter of 5mm larger than that of the metal hollow pipeline is communicated with the tail end of the metal hollow pipeline.
Furthermore, the end part of the rubber hose connected with the material receiving hopper 7 is provided with a sealing bulge outwards in a protruding manner, and the sealing bulge is arranged at an opening at the upper end of the material receiving hopper 7.
It should be noted that the detection device includes a pressure gauge 11, and the pressure gauge 11 is disposed at an end of the transition tank 6 close to the gravity dust collector 3, and is used for detecting the pressure in the transition tank 6.
Here, the detection device further comprises a level indicator 12, wherein the level indicator 12 is arranged at one end of the transition tank 6 close to the gravity dust collector 3 and is used for detecting the material level of coal gas and ash in the transition tank 6.
In one embodiment, the transport vehicle 10 is further included, the transport vehicle 10 is disposed on the receiving hopper 7, and the transport vehicle 10 can move on the ground or a track 8 disposed on the ground to transport the receiving hopper 7.
The invention also provides a using method of the closed ash discharging device of the gravity dust collector 3 of the blast furnace 1, which comprises the following steps:
opening a valve of an exhaust pipe 5 to enable high-pressure coal gas to enter a transition tank 6 through the exhaust pipe 5, stamping the transition tank 6, and closing the valve of the exhaust pipe 5 when the pressure of the transition tank 6 is detected to be the same as the high-pressure coal gas;
opening the ash discharging valve, and closing the ash discharging valve when the material level indicator 12 displays a material full level signal of the transition tank 6;
butting a shrinking opening of the receiving hopper 7 with a rubber hose below the transition pipe, and extending the rubber hose into a locking opening of the receiving hopper 7;
opening a valve of the transition tank 6 to enable ash to flow into the receiving hopper 7 from the transition tank 6, and when the ash flows into the rubber hose, extruding and expanding the rubber hose by pressure in the tank and the ash to realize complete sealing of the butt joint port and the contraction port of the rubber hose;
when the level meter 12 indicates that the level in the transition tank 6 is 0, the valve of the transition tank 6 is closed.
Claims (10)
1. A blast furnace (1) gravity dust collector (3) closed type ash discharging device is characterized by comprising: gas downtake (2), gravity dust collector (3), transition jar (6) and connect hopper (7) that from top to bottom communicate in proper order, gas downtake (2) are used for communicateing the furnace roof of blast furnace (1), with will the coal gas and the grey thing of blast furnace (1) furnace roof are discharged, transition jar (6) are equipped with detection device, detection device is used for detecting pressure and material level in transition jar (6), transition jar (6) with connect through rubber hose sealing connection between hopper (7).
2. The closed ash discharge device of the blast furnace (1) gravity dust collector (3) according to claim 1, characterized in that the opening of the upper end of the receiving hopper (7) is outwardly narrowed to form a narrowed mouth structure.
3. The closed ash discharge device of the gravitational precipitator (3) of the blast furnace (1) according to claim 2, characterized in that said rubber hose is sleeved inside the opening of the upper end of said receiving hopper (7).
4. The closed type dust exhaust apparatus of a gravitational dust collector (3) of a blast furnace (1) according to claim 3, wherein the opening width of said rubber hose is smaller than the opening width of the upper end of said receiving hopper (7).
5. The closed ash discharge device of the blast furnace (1) gravity dust collector (3) according to claim 1, characterized in that the transition tank (6) is communicated with an exhaust pipe (5), and the exhaust pipe (5) is used for discharging coal gas.
6. The closed ash discharge device of the gravity dust collector (3) of the blast furnace (1) according to claim 1, wherein the end of the rubber hose connected with the receiving hopper (7) is provided with a sealing bulge in an outward protruding manner, and the sealing bulge is opened at the opening at the upper end of the receiving hopper (7).
7. The closed ash discharge device of the blast furnace (1) gravity dust collector (3) according to claim 6, wherein the detection device comprises a pressure gauge (11), and the pressure gauge (11) is arranged at one end of the transition tank (6) close to the gravity dust collector (3) and is used for detecting the pressure in the transition tank (6).
8. The closed ash discharge device of the blast furnace (1) gravity dust collector (3) according to claim 7, wherein said detection device further comprises a level indicator (12), said level indicator (12) is located at one end of said transition tank (6) close to the gravity dust collector (3) for detecting the level of coal gas and ash in the transition tank (6).
9. The closed type ash discharge device of the blast furnace (1) gravity dust collector (3) according to claim 1, further comprising a transport vehicle (10), wherein the transport vehicle (10) is disposed on the receiving hopper (7), and the transport vehicle (10) can move on the ground or a track (8) disposed on the ground to transport the receiving hopper (7).
10. A method for using a closed type ash discharge device of a blast furnace (1) gravity dust collector (3), which is characterized in that the closed type ash discharge device of the blast furnace (1) gravity dust collector (3) according to any one of claims 1 to 9 is adopted, and the method comprises the following steps:
opening a valve of the exhaust pipe (5) to enable high-pressure coal gas to enter the transition tank (6) through the exhaust pipe (5), stamping the transition tank (6), and closing the valve of the exhaust pipe (5) when the pressure of the transition tank (6) is detected to be the same as the high-pressure coal gas;
opening an ash discharging valve, and closing the ash discharging valve when the material level meter (12) displays a material full level signal of the transition tank (6);
butting a shrinking opening of the receiving hopper (7) with a rubber hose below the transition pipe, and extending the rubber hose into a locking opening of the receiving hopper (7);
opening a valve of the transition tank (6) to enable ash to flow into the receiving hopper (7) from the transition tank (6), and when the ash flows into the rubber hose, the pressure in the tank and the ash enable the rubber hose to be extruded and expanded, so that the butt joint port and the shrinkage port of the rubber hose are completely sealed;
and when the level meter (12) shows that the level in the transition tank (6) is 0, closing the valve of the transition tank (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110057988.5A CN113215342A (en) | 2021-01-15 | 2021-01-15 | Closed ash discharging device of blast furnace gravity dust collector and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110057988.5A CN113215342A (en) | 2021-01-15 | 2021-01-15 | Closed ash discharging device of blast furnace gravity dust collector and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113215342A true CN113215342A (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110057988.5A Pending CN113215342A (en) | 2021-01-15 | 2021-01-15 | Closed ash discharging device of blast furnace gravity dust collector and using method thereof |
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| CN (1) | CN113215342A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02219783A (en) * | 1989-02-08 | 1990-09-03 | Tipton Mfg Corp | Opening/closing equipment for hopper discharge port |
| CN2761622Y (en) * | 2004-12-28 | 2006-03-01 | 首钢总公司 | Tank car ash transportation device of gravity dust collector |
| CN102766712A (en) * | 2012-08-15 | 2012-11-07 | 济钢集团有限公司 | Differential-pressure-free dust discharging device of blast furnace gravity dust collector |
| CN203923236U (en) * | 2014-06-19 | 2014-11-05 | 济钢集团有限公司 | The ash exhauster of gravity blast furnace dust catcher |
| CN208512106U (en) * | 2018-07-04 | 2019-02-19 | 江苏悦泽涂装设备有限公司 | A kind of filter bag of dust collector protective device |
-
2021
- 2021-01-15 CN CN202110057988.5A patent/CN113215342A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02219783A (en) * | 1989-02-08 | 1990-09-03 | Tipton Mfg Corp | Opening/closing equipment for hopper discharge port |
| CN2761622Y (en) * | 2004-12-28 | 2006-03-01 | 首钢总公司 | Tank car ash transportation device of gravity dust collector |
| CN102766712A (en) * | 2012-08-15 | 2012-11-07 | 济钢集团有限公司 | Differential-pressure-free dust discharging device of blast furnace gravity dust collector |
| CN203923236U (en) * | 2014-06-19 | 2014-11-05 | 济钢集团有限公司 | The ash exhauster of gravity blast furnace dust catcher |
| CN208512106U (en) * | 2018-07-04 | 2019-02-19 | 江苏悦泽涂装设备有限公司 | A kind of filter bag of dust collector protective device |
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Application publication date: 20210806 |