CN117535463A - Method for judging gravity dust removal position in tank in ash removal process and ash removal method thereof - Google Patents
Method for judging gravity dust removal position in tank in ash removal process and ash removal method thereof Download PDFInfo
- Publication number
- CN117535463A CN117535463A CN202311495132.1A CN202311495132A CN117535463A CN 117535463 A CN117535463 A CN 117535463A CN 202311495132 A CN202311495132 A CN 202311495132A CN 117535463 A CN117535463 A CN 117535463A
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- Prior art keywords
- ash
- dust
- electromagnetic
- temperature detection
- valve
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- 239000000428 dust Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000005484 gravity Effects 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000036541 health Effects 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
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
- C21B7/24—Test rods or other checking devices
Abstract
A method for judging the position of gravity dust in a tank in the ash discharging process and an ash discharging method thereof relate to the field of steel smelting production. It comprises the following steps: installing a temperature detection device; checking and disassembling the original ash discharging valve; replacing the original ash discharging valve by replacing the electromagnetic ash discharging valve; connecting temperature detection equipment with an electromagnetic ash discharge valve; monitoring and detecting the temperature in real time; starting ash discharge; and (5) ending. The invention has the beneficial effects that: the judging and ash discharging method can judge the ash and dust removing allowance through the temperature detecting equipment, ensure the detecting accuracy, and can automatically control the closing and opening of the electromagnetic ash discharging valve by matching with the electromagnetic ash discharging valve, and automatically perform relevant operation of ash discharging, thereby further ensuring the health and safety of staff.
Description
Technical Field
The invention relates to the field of steel smelting production, in particular to a method for judging the position of gravity dust in a tank in the dust discharging process and a dust discharging method thereof.
Background
A large amount of dust can be generated in the production process of a blast furnace in the ferrous metallurgy industry, the gravity dust remover of the blast furnace is a primary dust removing device of a raw gas dust removing system, the dust removing principle is that the flow speed of a gas flow is suddenly reduced, the flow direction is changed, the dust with larger particles is separated from the gas under the action of gravity and inertia force, and is settled to the bottom part of a dust remover cone and discharged to a stirrer through a dust discharging device, and the dust removing rate can reach 60%.
The traditional gravity dust removing and ash discharging mode of the blast furnace is a manual control mode by experience. When the automobile is stopped in place for preparation operation, the auger ash discharger is started in sequence, the lower ash discharge valve and the upper ash discharge valve are opened for ash discharge operation, whether gravity dust removal ash is discharged or not is judged in the ash discharge process, the ash discharge opening is observed by naked eyes, and when coal gas dust appears in the ash discharge opening, the upper ash discharge valve and the lower ash discharge valve are closed immediately. Because experience and reaction time of each person are different, dust emission is easy to cause unstructured emission in the ash discharging process, in addition, gas leaks, safety accidents are easy to occur, and adverse effects are brought to enterprises.
Disclosure of Invention
The invention aims to provide a method for judging the position of gravity dust in a tank and a dust discharging method thereof in the dust discharging process, aiming at the defects and the shortcomings in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: a method for judging the position of gravity dust in a tank in the ash discharging process and an ash discharging method thereof comprise the following steps: installing a temperature detection device; checking and disassembling the original ash discharging valve; replacing the original ash discharging valve by replacing the electromagnetic ash discharging valve; connecting temperature detection equipment with an electromagnetic ash discharge valve; monitoring and detecting the temperature in real time; starting ash discharge; and (5) ending.
Further, the installation temperature detection device specifically includes: a plurality of holes are formed outside the gravity dedusting tank body of the blast furnace according to the requirement, a thermocouple is inserted and connected with a display screen, the distance from the opening to the ash discharge opening is marked on the opening, and H1, H2 and H3..
Further, the minimum distance between the adjacent temperature detection devices is not smaller than 1/20 of the height of the tank body, and the maximum distance is not larger than 1/10 of the height of the tank body. The distance between two adjacent temperature detection devices is kept at 1/10-1/20, so that the temperature sensing precision of the temperature detection devices can be ensured, and meanwhile, the interference of the two temperature detection devices can be avoided to the maximum extent.
Furthermore, in the connection temperature detection device and the electromagnetic ash valve, when the connection temperature detection device and the electromagnetic ash valve are connected, the accuracy of connection is ensured, and the connection ports of the connection temperature detection device and the electromagnetic ash valve are correspondingly marked with Q1, Q2 and Q3..
Further, the detection judgment of the real-time monitoring and detection temperature specifically includes: when the position of the thermocouple is free of dust, the temperature displayed by the thermocouple fluctuates along with the raw gas temperature, namely the temperature detected by the thermocouple is the raw gas temperature, and the dust position in the gravity dust removal tank body can be judged to be lowered below the position according to the temperature change at the moment, and the detection point of the thermocouple is free of gas dust.
Furthermore, when no gas ash is detected, the electromagnetic ash discharge valve can be closed in advance, so that the occurrence of unorganized emission and gas safety accidents caused by dust and gas leakage is avoided, and the environment of the area is greatly improved.
Further, the starting ash discharging specifically comprises: when ash is discharged, the opening and closing degree of the electromagnetic ash discharge valve can be controlled according to the data detected by the temperature detection equipment: if the temperature detection equipment at the top still detects dust removal, the maximum opening and closing degree is opened; if the temperature detection equipment at the top does not detect the dust and the temperature detection equipment at the middle still detects the dust, the electromagnetic dust discharge valve is started to be closed, so that the opening and closing degree of the electromagnetic dust discharge valve is reduced; if the temperature detection equipment in the middle part does not detect dust and dust, and the temperature detection equipment at the bottom still detects dust and dust, the electromagnetic dust discharge valve is completely closed.
After the technical scheme is adopted, the invention has the beneficial effects that: the judging and ash discharging method can judge the ash and dust removing allowance through the temperature detecting equipment, ensure the detecting accuracy, and can automatically control the closing and opening of the electromagnetic ash discharging valve by matching with the electromagnetic ash discharging valve, and automatically perform relevant operation of ash discharging, thereby further ensuring the health and safety of staff.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic view of the installation of the apparatus of the present invention.
Fig. 2 is a schematic flow chart of the present invention.
Detailed Description
Referring to fig. 1-2, the technical scheme adopted in the specific embodiment is as follows: it comprises the following steps:
s1, mounting temperature detection equipment: a plurality of holes are formed outside the gravity dedusting tank body of the blast furnace according to the requirement, a thermocouple is inserted and connected with a display screen, the distance from the opening to an ash discharge hole is marked on the opening, H1, H2 and H3.. The distance between two adjacent temperature detection devices is kept at 1/10-1/20, so that the temperature sensing precision of the temperature detection devices can be ensured, and meanwhile, the interference of the two temperature detection devices can be avoided to the maximum extent.
S2, checking and disassembling the original ash discharging valve.
S3, replacing the electromagnetic ash valve, and further replacing the original ash valve.
S4, connecting temperature detection equipment with an electromagnetic ash valve: when the temperature detection device and the electromagnetic ash valve are connected, the accuracy of connection of the temperature detection device and the electromagnetic ash valve is ensured, and Q1, Q2 and Q3..
S5, monitoring and detecting the temperature in real time: when no dust is in the position of the thermocouple, the temperature displayed by the thermocouple fluctuates along with the temperature of raw gas, namely the temperature detected by the thermocouple is the temperature of the raw gas, the dust removing position in the gravity dust removing tank body can be judged to be lowered below the position according to the temperature change, and the gas ash does not exist in the detection point of the thermocouple, wherein when no gas ash is detected, the electromagnetic dust discharging valve can be closed in advance, so that the occurrence of unorganized emission and gas safety accidents caused by dust and gas leakage is avoided, and the environment of the area is greatly improved.
S6, starting ash discharging:
when ash is discharged, the opening and closing degree of the electromagnetic ash discharge valve can be controlled according to the data detected by the temperature detection equipment:
1) If the temperature detection equipment at the top still detects dust removal, the maximum opening and closing degree is opened;
2) If the temperature detection equipment at the top does not detect the dust and the temperature detection equipment at the middle still detects the dust, the electromagnetic dust discharge valve is started to be closed, so that the opening and closing degree of the electromagnetic dust discharge valve is reduced;
3) If the middle temperature detection device does not detect the dust and the temperature detection device at the bottom still detects the dust, the electromagnetic dust discharging valve is completely closed
S7, ending.
The foregoing is merely illustrative of the present invention and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (7)
1. A method for judging the position of gravity dust in a tank in the ash discharging process is characterized in that: it comprises the following steps:
s1, installing temperature detection equipment;
s2, checking and disassembling the original ash discharging valve;
s3, replacing an electromagnetic ash valve, thereby replacing the original ash valve;
s4, connecting temperature detection equipment with an electromagnetic ash valve;
s5, monitoring and detecting the temperature in real time;
s6, starting ash discharging;
s7, ending.
2. A method of determining the position of gravity ash in a tank during ash discharge according to claim 1, wherein: the S1 specifically comprises the following steps: a plurality of holes are formed outside the gravity dedusting tank body of the blast furnace according to the requirement, a thermocouple is inserted and connected with a display screen, the distance from the opening to the ash discharge opening is marked on the opening, and H1, H2 and H3..
3. A method of determining the location of gravity ash in a tank during ash discharge according to claim 2, wherein: the minimum distance between the adjacent temperature detection devices is not smaller than 1/20 of the height of the tank body, and the maximum distance is not larger than 1/10 of the height of the tank body.
4. A method of determining the position of gravity ash in a tank during ash discharge according to claim 1, wherein: in the step S4, when the temperature detection device and the electromagnetic ash valve are connected, the accuracy of connection should be ensured, and Q1, Q2, Q3...qn should be marked on the connection ports correspondingly.
5. A method of determining the position of gravity ash in a tank during ash discharge according to claim 1, wherein: the detection judgment of the S5 specifically comprises the following steps: when the position of the thermocouple is free of dust, the temperature displayed by the thermocouple fluctuates along with the raw gas temperature, namely the temperature detected by the thermocouple is the raw gas temperature, and the dust position in the gravity dust removal tank body can be judged to be lowered below the position according to the temperature change at the moment, and the detection point of the thermocouple is free of gas dust.
6. The method for determining the position of gravity ash in a tank during ash removal according to claim 5, wherein: when S5 detects that no gas ash exists, the electromagnetic ash discharge valve can be closed in advance, so that the occurrence of unorganized emission and gas safety accidents caused by dust and gas leakage is avoided, and the environment of the area is greatly improved.
7. A method of ash discharge in a method of determining gravity ash position in a tank in an ash discharge process according to claim 1, wherein: the step S6 specifically comprises the following steps: when ash is discharged, the opening and closing degree of the electromagnetic ash discharge valve can be controlled according to the data detected by the temperature detection equipment:
1) If the temperature detection equipment at the top still detects dust removal, the maximum opening and closing degree is opened;
2) If the temperature detection equipment at the top does not detect the dust and the temperature detection equipment at the middle still detects the dust, the electromagnetic dust discharge valve is started to be closed, so that the opening and closing degree of the electromagnetic dust discharge valve is reduced;
3) If the temperature detection equipment in the middle part does not detect dust and dust, and the temperature detection equipment at the bottom still detects dust and dust, the electromagnetic dust discharge valve is completely closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495132.1A CN117535463A (en) | 2023-11-10 | 2023-11-10 | Method for judging gravity dust removal position in tank in ash removal process and ash removal method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495132.1A CN117535463A (en) | 2023-11-10 | 2023-11-10 | Method for judging gravity dust removal position in tank in ash removal process and ash removal method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117535463A true CN117535463A (en) | 2024-02-09 |
Family
ID=89781825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311495132.1A Pending CN117535463A (en) | 2023-11-10 | 2023-11-10 | Method for judging gravity dust removal position in tank in ash removal process and ash removal method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117535463A (en) |
-
2023
- 2023-11-10 CN CN202311495132.1A patent/CN117535463A/en active Pending
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