CN114230138A - Replacement method of tank furnace feeding equipment in ultrathin flexible glass production - Google Patents
Replacement method of tank furnace feeding equipment in ultrathin flexible glass production Download PDFInfo
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- CN114230138A CN114230138A CN202210008993.1A CN202210008993A CN114230138A CN 114230138 A CN114230138 A CN 114230138A CN 202210008993 A CN202210008993 A CN 202210008993A CN 114230138 A CN114230138 A CN 114230138A
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- feeding equipment
- feeding
- equipment
- liquid level
- furnace
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000011521 glass Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 31
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000011084 recovery Methods 0.000 claims description 11
- 238000004886 process control Methods 0.000 claims description 9
- 239000011449 brick Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 2
- 238000003908 quality control method Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B3/00—Charging the melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a method for replacing tank furnace feeding equipment in ultrathin flexible glass production, wherein various faults of the feeding equipment cannot be avoided in the operation process, the feeding equipment needs to be replaced when the faults cannot be quickly eliminated, and in addition, the feeding equipment needs to be replaced when the normal blanking state is influenced by the abrasion of a spiral shaft. When the time of the charging equipment is not properly controlled in the replacement process, the temperature of the tank furnace can greatly fluctuate, and bad stones, bubbles and the like appear.
Description
Technical Field
The invention belongs to the field of production of ultrathin flexible glass (UTG), and relates to a method for replacing feeding equipment in manufacturing of ultrathin flexible glass (UTG).
Background
In the manufacturing of the ultrathin flexible glass (UTG), the feeding equipment of the ultrathin flexible glass (UTG) tank furnace is common equipment and is mainly used for continuously feeding batch materials into the tank furnace, the feeding equipment is used as main equipment for producing the ultrathin flexible glass (UTG), various faults are avoided, the service life of the current feeding equipment is short, the replacement is frequent, the replacement period of the current feeding equipment of the tank furnace is long, the replacement process method is improper, the fault downtime of the feeding equipment is long, the convection in the tank furnace is unstable, the feeding amount is insufficient, the liquid level is greatly reduced, and the instability of convection in the tank furnace affects the instability of stones and bubbles.
Disclosure of Invention
The invention mainly aims to solve the problems of large temperature fluctuation of a tank furnace, unstable convection state of the tank furnace and fluctuation of a melting default point caused in the process of replacing feeding equipment in the prior production, effectively control a replacing method, process temperature and parameters thereof in the replacing process of the feeding equipment, reduce the influence of the replacing of the whole feeding equipment on the process temperature and quality, and provide a replacing method of the feeding equipment of the tank furnace in the production of ultrathin flexible glass (UTG).
The technical scheme of the invention is as follows:
a method for replacing tank furnace feeding equipment in ultrathin flexible glass (UTG) production is characterized by comprising the following steps:
(1) determining the replacement standard of the feeding equipment:
a. accumulating and continuously using for 10 months;
b. when the melting defect is abnormal and needs to be replaced;
c. abnormality of the feeding equipment:
the operating current of the feeding equipment is increased by 20 percent or more;
the limiting position of the feeding equipment moves by 10 mm;
due to the feeding equipment, the continuous 2-hour blanking amount of the single-side feeding equipment is lower than the normal 20 kg;
the feeding equipment has a fault;
(2) a method and a flow for the replacement process of the feeding equipment;
a, a process controller changes furnace pressure from automatic control to manual control, and a controller controls the furnace pressure within a normal control range according to field conditions;
b, after stopping the primary screw, closing a blanking flashboard of a feed bin of the feeding equipment needing to be replaced;
c, when confirming that no batch exists between the feeding equipment bin and the small bin connecting position, the security personnel is responsible for removing the feeding equipment to disconnect the feeding equipment from the upper bin;
d, stopping the operation of the feeding equipment in time after the feeding equipment is pulled out;
e, cleaning the feed opening, wherein in the cleaning process, a watch lens is used for observing the cleaning condition of the feed opening to ensure that the feed opening is cleaned;
f, after the batch inlet is cleaned, a plug made of a heat insulation blanket is used for blocking the batch inlet in time, the condition of batch in the front end of the sleeve of the batch feeding equipment, the intermediate bin and the small bin is checked, and the batch bin of the batch feeding equipment is filled with the batch;
g, taking off a plug of the feeding port, slowly pushing the feeding equipment, confirming the height size of the feeding equipment and a brick of the feeding port, and pushing the feeding equipment after confirming the normal state and opening the feeding equipment in time;
h, opening a primary feeding screw above a hopper of the feeding equipment, simultaneously reducing the opening degree of the feeding equipment until the opening degree of the feeding equipment before cleaning is recovered, and adjusting the opening degree of the feeding equipment according to the change of the liquid level appropriately at the later stage;
j, observing the blanking condition of the feeding equipment at the observation hole of the tank furnace, confirming the blanking state, and sealing the sleeve of the feeding equipment and the brick of the feeding cylinder by using heat insulation cotton;
and after the k cleaning operation is finished and the feeding amount is stable, calculating the sizes of the two feeding amounts, and ensuring that the difference value of the two feeding amounts is within 5 Kg.
And (3) carrying out process and quality control in the replacement process:
when the liquid level height is reduced by less than 10mm during replacement, the process control requirements are as follows:
a, the opening degree of feeding equipment is not adjusted, the original opening degree is kept, and the feeding amount is not compensated and adjusted;
b, the loading heat of the electrodes of the pool furnace is not adjusted;
c, controlling the change of the furnace pressure in the process, wherein the furnace pressure is controlled according to a normal standard;
d, controlling the temperature of the channel and the lead-out quantity according to normal requirements in the process;
when the liquid level height is reduced by more than or equal to 10mm during replacement, the process control requirements in the process are as follows:
a, increasing the feeding amount and ensuring that the rising amplitude of the liquid level is less than 1mm/4 hours;
b, the loading heat of the electrodes of the pool furnace is not adjusted;
c, controlling the change of the furnace pressure in the process, wherein the furnace pressure is controlled according to a normal standard;
and d, controlling the temperature of the channel and the lead-out quantity according to normal requirements.
And (3) recovering and controlling the process after the replacement is finished:
a, recovering and stabilizing furnace pressure in time;
b, monitoring the current of the feeding equipment, the cooling return water temperature of the feeding equipment and the feeding state in time after the new feeding equipment is put into the feeding equipment;
c, checking the blanking amount of 2 feeding devices in time, and ensuring that the blanking difference of the 2 feeding devices is less than 3kg/hr by adjusting the proportional coefficient of the feeding devices;
d, after ensuring that the descending amount of the two feeding devices is balanced, carrying out the liquid level recovery work;
e, when the liquid level is recovered, the material feeding amount of 2 feeding devices is synchronously increased to recover the liquid level, and the liquid level recovery amplitude is 1mm/4 hr;
f, in the liquid level recovery and the later stabilization process, the heat loaded in the tank furnace is not adjusted;
and g, in the liquid level recovery and later-period stabilization processes, the channel temperature and the lead-out quantity are controlled according to normal requirements.
The change of the feeding equipment has little influence on the process temperature and the quality.
Detailed Description
A method for replacing tank furnace feeding equipment in the production of ultrathin flexible glass (UTG) mainly comprises the following steps:
1. replacement standard of feeding equipment:
1.1 replacement standard of normal use of feeding equipment:
g. accumulating and continuously using for 10 months;
h. when the fusion defect is abnormal and needs to be replaced.
1.2 replacement Standard of abnormal feeding Equipment
The operating current of the feeding equipment is increased by 20 percent or more;
the limiting position of the feeding equipment moves by 10 mm;
due to the feeding equipment, the continuous 2-hour blanking amount of the single-side feeding equipment is lower than the normal 20 kg;
when the feeding equipment breaks down.
2. A method and a flow for the replacement process of the feeding equipment;
2.1 the process control personnel change the furnace pressure from automatic control to manual control, and the control personnel control the furnace pressure within a normal control range according to the field condition;
2.2 after stopping the first-stage spiral, closing a blanking flashboard of a feed bin of the feeding equipment needing to be replaced;
2.3 when confirming that no batch is present between the feeding equipment bin and the small bin connecting position, the security personnel is responsible for removing the cylinder connection between the feeding equipment and the flashboard, so that the feeding equipment is disconnected from the upper bin, and the fixed connection between the feeding equipment and the steel structure is removed;
2.4 stopping the operation of the feeding equipment in time after the feeding equipment is pulled out;
2.5 cleaning the feed opening, wherein in the cleaning process, a watch lens is used for observing the cleaning condition of the feed opening to ensure that the feed opening is cleaned;
2.6 after the feed opening is cleaned, a plug made of a heat insulation blanket is used for blocking the feed opening in time, the condition of batch materials in the front end of a sleeve of the batch equipment, an intermediate bin and a small bin is checked, and the bin of the batch equipment is filled with the batch materials;
2.7, taking off the plug of the feeding port, slowly pushing the feeding equipment, confirming the height size between the feeding equipment and the brick of the feeding port, and pushing the feeding equipment after confirming the normal state and opening the feeding equipment in time;
2.8 opening a primary feeding screw above a hopper of the feeding equipment, simultaneously reducing the opening degree of the feeding equipment until the opening degree of the feeding equipment before cleaning is recovered, and adjusting the opening degree of the feeding equipment according to the change of the liquid level appropriately at the later stage;
2.9 observing the blanking condition of the feeding equipment at the observation hole of the tank furnace, confirming the blanking state, and sealing the sleeve of the feeding equipment and the brick of the feeding cylinder by using heat insulation cotton;
2.10 after the cleaning operation is finished and the feeding amount is stable, the sizes of the two feeding amounts are calculated, and the difference value of the two feeding amounts is ensured to be within 5 Kg.
3. And controlling the process and quality in the replacement process.
1. When the liquid level height is reduced by less than 10mm during replacement, the process control requirements are as follows:
1.1 the opening degree of the feeding equipment is not adjusted, the original opening degree is kept, and the feeding amount is not compensated and adjusted;
1.2 the heat loaded by the electrodes of the tank furnace is not adjusted;
1.3, controlling the change of the furnace pressure in the process, wherein the furnace pressure is controlled according to a normal standard;
and 1.4, controlling the temperature of the channel and the lead-out quantity according to normal requirements.
2. When the liquid level height is reduced by more than or equal to 10mm during replacement, the process control requirements in the process are as follows:
2.1 increasing the feeding amount and ensuring that the rising amplitude of the liquid level is less than 1mm/4 hours;
2.2 the heat loaded by the electrodes of the tank furnace is not adjusted;
2.3, controlling the change of the furnace pressure in the process, wherein the furnace pressure is controlled according to a normal standard.
2.4 the channel temperature and the lead-out quantity in the process are controlled according to normal requirements.
4. And (3) recovering and controlling the process after the replacement is finished:
4.1, recovering and stabilizing the furnace pressure in time;
4.2, monitoring the current of the feeding equipment, the cooling return water temperature of the feeding equipment and the feeding state in time after the new feeding equipment is put into the feeding equipment;
4.3, checking the blanking amount of 2 feeding devices in time, and ensuring that the blanking difference of the 2 feeding devices is less than 3kg/hr by adjusting the proportional coefficient of the feeding devices;
4.4, after the descending amount of the two feeding devices is ensured to be balanced, the liquid level is recovered;
4.5, when the liquid level is recovered, the liquid level is recovered by synchronously increasing the feeding amount of 2 feeding devices, and the liquid level recovery amplitude is 1mm/4 hr;
4.6, in the liquid level recovery and the later stabilization process, the heat loaded in the tank furnace is not adjusted;
and 4.7, controlling the temperature of the channel and the lead-out quantity according to normal requirements in the liquid level recovery and later-period stabilization processes.
Claims (3)
1. The replacement method of the tank furnace feeding equipment in the production of the ultrathin flexible glass is characterized by comprising the following steps of:
(1) determining the replacement standard of the feeding equipment:
a. accumulating and continuously using for 10 months;
b. when the melting defect is abnormal and needs to be replaced;
c. abnormality of the feeding equipment:
the operating current of the feeding equipment is increased by 20 percent or more;
the limiting position of the feeding equipment moves by 10 mm;
due to the feeding equipment, the continuous 2-hour blanking amount of the single-side feeding equipment is lower than the normal 20 kg;
the feeding equipment has a fault;
(2) a method and a flow for the replacement process of the feeding equipment;
a, a process controller changes furnace pressure from automatic control to manual control, and a controller controls the furnace pressure within a normal control range according to field conditions;
b, after stopping the primary screw, closing a blanking flashboard of a feed bin of the feeding equipment needing to be replaced;
c, when confirming that no batch exists between the feeding equipment bin and the small bin connecting position, the security personnel is responsible for removing the feeding equipment to disconnect the feeding equipment from the upper bin;
d, stopping the operation of the feeding equipment in time after the feeding equipment is pulled out;
e, cleaning the feed opening, wherein in the cleaning process, a watch lens is used for observing the cleaning condition of the feed opening to ensure that the feed opening is cleaned;
f, after the batch inlet is cleaned, a plug made of a heat insulation blanket is used for blocking the batch inlet in time, the condition of batch in the front end of the sleeve of the batch feeding equipment, the intermediate bin and the small bin is checked, and the batch bin of the batch feeding equipment is filled with the batch;
g, taking off a plug of the feeding port, slowly pushing the feeding equipment, confirming the height size of the feeding equipment and a brick of the feeding port, and pushing the feeding equipment after confirming the normal state and opening the feeding equipment in time;
h, opening a primary feeding screw above a hopper of the feeding equipment, simultaneously reducing the opening degree of the feeding equipment until the opening degree of the feeding equipment before cleaning is recovered, and adjusting the opening degree of the feeding equipment according to the change of the liquid level appropriately at the later stage;
j, observing the blanking condition of the feeding equipment at the observation hole of the tank furnace, confirming the blanking state, and sealing the sleeve of the feeding equipment and the brick of the feeding cylinder by using heat insulation cotton;
and after the k cleaning operation is finished and the feeding amount is stable, calculating the sizes of the two feeding amounts, and ensuring that the difference value of the two feeding amounts is within 5 Kg.
2. The method for replacing the tank furnace feeding equipment in the production of the ultrathin flexible glass, as recited in claim 1, characterized in that: and (3) carrying out process and quality control in the replacement process:
when the liquid level height is reduced by less than 10mm during replacement, the process control requirements are as follows:
a, the opening degree of feeding equipment is not adjusted, the original opening degree is kept, and the feeding amount is not compensated and adjusted;
b, the loading heat of the electrodes of the pool furnace is not adjusted;
c, controlling the change of the furnace pressure in the process, wherein the furnace pressure is controlled according to a normal standard;
d, controlling the temperature of the channel and the lead-out quantity according to normal requirements in the process;
when the liquid level height is reduced by more than or equal to 10mm during replacement, the process control requirements in the process are as follows:
a, increasing the feeding amount and ensuring that the rising amplitude of the liquid level is less than 1mm/4 hours;
b, the loading heat of the electrodes of the pool furnace is not adjusted;
c, controlling the change of the furnace pressure in the process, wherein the furnace pressure is controlled according to a normal standard;
and d, controlling the temperature of the channel and the lead-out quantity according to normal requirements.
3. The method for replacing the tank furnace feeding equipment in the production of the ultrathin flexible glass, as recited in claim 1, characterized in that: and (3) recovering and controlling the process after the replacement is finished:
a, recovering and stabilizing furnace pressure in time;
b, monitoring the current of the feeding equipment, the cooling return water temperature of the feeding equipment and the feeding state in time after the new feeding equipment is put into the feeding equipment;
c, checking the blanking amount of 2 feeding devices in time, and ensuring that the blanking difference of the 2 feeding devices is less than 3kg/hr by adjusting the proportional coefficient of the feeding devices;
d, after ensuring that the descending amount of the two feeding devices is balanced, carrying out the liquid level recovery work;
e, when the liquid level is recovered, the material feeding amount of 2 feeding devices is synchronously increased to recover the liquid level, and the liquid level recovery amplitude is 1mm/4 hr;
f, in the liquid level recovery and the later stabilization process, the heat loaded in the tank furnace is not adjusted;
and g, in the liquid level recovery and later-period stabilization processes, the channel temperature and the lead-out quantity are controlled according to normal requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210008993.1A CN114230138A (en) | 2022-01-06 | 2022-01-06 | Replacement method of tank furnace feeding equipment in ultrathin flexible glass production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210008993.1A CN114230138A (en) | 2022-01-06 | 2022-01-06 | Replacement method of tank furnace feeding equipment in ultrathin flexible glass production |
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| Publication Number | Publication Date |
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| CN114230138A true CN114230138A (en) | 2022-03-25 |
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| CN202210008993.1A Pending CN114230138A (en) | 2022-01-06 | 2022-01-06 | Replacement method of tank furnace feeding equipment in ultrathin flexible glass production |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563311A (en) * | 2019-08-27 | 2019-12-13 | 彩虹集团（邵阳）特种玻璃有限公司 | Method for ensuring stable convection in tank furnace by replacing batch feeder |
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- 2022-01-06 CN CN202210008993.1A patent/CN114230138A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563311A (en) * | 2019-08-27 | 2019-12-13 | 彩虹集团（邵阳）特种玻璃有限公司 | Method for ensuring stable convection in tank furnace by replacing batch feeder |
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Application publication date: 20220325 |