CN110496484A - Casting residue drips dusting flue gas ash removal method - Google Patents
Casting residue drips dusting flue gas ash removal method Download PDFInfo
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- CN110496484A CN110496484A CN201910845532.8A CN201910845532A CN110496484A CN 110496484 A CN110496484 A CN 110496484A CN 201910845532 A CN201910845532 A CN 201910845532A CN 110496484 A CN110496484 A CN 110496484A
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- dusting
- flue gas
- slag ladle
- temperature
- drips
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- 238000010410 dusting Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000003546 flue gas Substances 0.000 title claims abstract description 31
- 238000005266 casting Methods 0.000 title claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 63
- 239000000428 dust Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000011897 real-time detection Methods 0.000 claims abstract description 4
- 230000003020 moisturizing effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 208000033748 Device issues Diseases 0.000 claims 2
- 238000004861 thermometry Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000003723 Smelting Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000013499 data model Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to steel smelting casting residue processing technology fields, more specifically, it is related to casting residue and drips dusting flue gas ash removal method, its key points of the technical solution are that: when the slag ladle for filling casting residue run to drip dusting station after, start programmable logic controller (PLC), the temperature of slag ladle described in real-time detection, when the temperature of the slag ladle is lower than the first temperature value, dusting of dripping is carried out to the slag ladle, it is worked based on the PLC controls dedusting fan, the flue gas formed in the slag ladle is evacuated to water proof intermediate box by dust excluding hood, flue gas discharges after being handled by water bath dust-removing after dedusting fan pressurizes, it is worked based on the PLC controls electric control valve, the flow to drip to be adjusted, when the temperature of the slag ladle is lower than second temperature value, motorized adjustment described in the PLC controls Valve stops working.The present invention, which has, is able to satisfy drip dusting process qualified discharge and the advantages of cost is relatively low easy to operate.
Description
Technical field
The present invention relates to steel smelting casting residue processing technology field, the dusting flue gas more specifically, it relates to which casting residue drips
Dust removal method.
Background technique
Steel smelting casting residue is that steel-making remains in the slag in ladle when being refined to continuous casting, generally by molten steel, silicate, oxidation
The composition such as calcium.Currently, the steel smelting casting residue of domestic steel mill mainly uses simple type to drip dusting processing mode, i.e. slag ladle open type
Add the bored slag of water, its advantage is that process is simple, cost is relatively low, but the steam dust uncontrollable discharge shadow that the bored slag process of open type generates
Ring surrounding enviroment, corrosion periphery steel construction.To avoid steam dust from influencing environment, existing method is to combine rotation using mobile cover vehicle
Hub cap is dusted, and in the case that rotation lid is opened, mobile cover vehicle is reciprocally moveable on moving track to be dusted, and is not influenced
Operation；Mobile cover vehicle is connected with telescopic pipes, and under fan action, flue gas is after pipeline enters wet-type rotational flow device dedusting from chimney
Outlet.
Above scheme existing defects: structure is complicated for dust excluding hood vehicle and wet-type rotational flow device, higher cost, complicated for operation.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide casting residue to drip dusting flue gas ash removal side
Method has and is able to satisfy drip dusting process qualified discharge and the advantages of cost is relatively low easy to operate.
Casting residue drips dusting flue gas ash removal method, comprising:
When the slag ladle for filling casting residue run to drip dusting station after, start programmable logic controller (PLC)；
The temperature of slag ladle described in real-time detection drips the slag ladle when the temperature of the slag ladle is lower than the first temperature value
It is water-atomised；
It is worked based on the PLC controls dedusting fan, the flue gas formed in the slag ladle is taken out by dust excluding hood
To water proof intermediate box, flue gas passes through smoke stack emission after handling by water bath dust-removing after dedusting fan pressurizes；
It is worked based on the PLC controls electric control valve, the flow to drip to be adjusted, when described
When the temperature of slag ladle is lower than second temperature value, electric control valve described in the PLC controls stops working.
In one embodiment, after starting programmable logic controller (PLC) step, further includes:
The programmable logic controller (PLC) is connected with infrared thermometer, and first temperature value is 300 DEG C, and the infrared ray is surveyed
When Wen Yi detects the slag ladle temperature lower than 300 DEG C, information is fed back into the programmable logic controller (PLC), it is described programmable
Logic controller issues instruction starting dust excluding hood tipple, and dust excluding hood is closed in place, the water spray on the dust excluding hood
Pipe starts dusting of dripping.
In one embodiment, after the atomization step that starts to drip, further includes:
The programmable logic controller (PLC) issues instruction and starts the dedusting fan start-up operation, and flue gas is at the top of the dust excluding hood
Enter the water proof intermediate box by air hose after discharge, removes wherein bulky grain droplet and dust in the water proof intermediate box, then
Box water bath dust-removing and chimney are pressed and delivered to by the dedusting fan, the qualified discharge after water bath dust-removing, dusting of entirely dripping
Flow operations are simple, are not necessarily to manual intervention, and the cost of cost is low.
In one embodiment, after starting dedusting fan start-up operation step, further includes:
Programmable logic controller program issues instruction starting electric control valve automatically, according to electromagnetic flowmeter feedback information, institute
It states electric control valve the refill flow of sparge pipe is adjusted, infrared thermometer real time monitoring temperature becomes during moisturizing
Change, is given a warning when temperature drop curve does not meet normal temperature drop law.
In one embodiment, the second temperature value is 80 DEG C, and the infrared thermometer at the slag ladle is aobvious
When temperature displaying function is below 80 DEG C, the programmable logic controller (PLC) issues instruction and closes the electric control valve, stops moisturizing,
When having no temperature recovery after 0.5h, the programmable logic controller (PLC) issues instruction and stops the dedusting fan.
In one embodiment, after the step of closing dedusting fan, further includes:
The programmable logic controller (PLC) issues instruction, starts the dust excluding hood tipple, dust excluding hood is reached position, after 2min
Programmable logic controller (PLC) is automatically stopped operation, each electrical equipment power-off, and process terminates.
In one embodiment, the flow that initially drips of the sparge pipe fills the quantity of slag according to slag ladle and controls in 0.5-1m3/h,
2h, combined water consumption and temperature drop degree are maintained under initial flow, program, which is pressed, automatically adjusts subsequent benefit through moisturizing data model
Water.
In one embodiment, the tangential direction of the air hose is equipped with wash tub pipe, the wash tub pipe per hour from
For the dynamic 3min that rinses to avoid dust blocking pipeline, the bottom of the water proof intermediate box offers opening for draining.
In one embodiment, there are three the infrared thermometer settings, three infrared thermometers are right respectively
The upper, middle and lower position of the quasi- slag ladle.
In one embodiment, the dust excluding hood tipple includes electric drive hydraulic thruster, and the electric drive hydraulic thruster is logical
The PLC controls are crossed to realize the automatic turning of the dust excluding hood tipple.
Through the above scheme, the steam dust of generation of dripping is removed bulky grain after air hose enters water proof intermediate box
Droplet and dust, then after being delivered to the processing of box water bath dust-removing via dedusting fan, it is organized by chimney to reach discharge standard
Discharge, pass through the frequency of speed and dedusting fan that programmable logic controller control is dripped, guarantee to generate steam dust energy
Discharge in time, will not be blocked in air hose there is a situation where accumulating, the bottom of wash tub pipe and water proof case is equipped on air hose
Opening is offered, can periodically be cleaned in air hose and in water proof case, avoids causing cleaning tired after the accumulation such as dust are excessive
The phenomenon that difficult and blocking.
Detailed description of the invention
Fig. 1 is that the casting residue of the present embodiment drips dusting flue gas ash removal method flow schematic diagram；
Fig. 2 is that the connection relationship of programmable logic controller (PLC) and each component is intended in the present embodiment；
Fig. 3 is the attachment structure schematic diagram of air hose and water proof intermediate box in the present embodiment；
Fig. 4 is the structural schematic diagram of dust excluding hood tipple in the present embodiment.
In figure: 20, dust excluding hood tipple；201, electric hydaulic bar；301, slag ladle；302, infrared thermometer；401,
Air hose；402, water proof intermediate box；501, wash tub pipe.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
The dusting flue gas ash removal method as shown in Figure 1, casting residue drips, comprising:
Step 101: when the slag ladle for filling casting residue run to drip dusting station after, start programmable logic controller (PLC).
Step 102: signal is fed back to programmable logic controller (PLC), programmable logic control by the temperature of real-time detection slag ladle
Device processed judges whether the temperature of slag ladle reaches the temperature for dusting of dripping, and when the temperature of slag ladle is lower than the first temperature value, may be programmed
Logic controller issues instruction, carries out dusting of dripping to slag ladle.
Step 103: PLC controls dedusting fan works, and the flue gas for dusting formation of dripping in slag ladle is by removing
Dust hood is expelled to water proof intermediate box, by the pressurized delivered of dedusting fan, by reaching discharge standard after water bath dust-removing and passing through
Smoke stack emission.
Step 104: the work of PLC controls electric control valve, the flow to drip to be adjusted, control
Dusting speed in slag ladle processed, programmable logic controller (PLC) real-time reception monitors the temperature signal of slag ladle, when the temperature of slag ladle is low
When second temperature value, PLC controls electric control valve stops working, and makes water flow that can not pass through motorized adjustment
Valve enters in slag ladle, and dusting of dripping reaction stops.
Programmable logic controller (PLC) sends a command to electric adjustable after the temperature of slag ladle reaches the temperature for the dusting that can drip
Valve is saved, electric control valve opens channel, and water flow, which is flow at dust excluding hood, enters slag ladle, starts dusting of dripping, when slag ladle temperature declines
After the temperature of dusting reaction of dripping to stopping, PLC controls electric control valve closing passage stops the powder that drips
Change reaction, the atomization process that entirely drips is automatically controlled by programmable logic controller (PLC), and it is easy to operate simple, it is not necessarily to human assistance
Intervene, the speed for dusting of dripping can also be adjusted by electric control valve.
In one embodiment, as shown in Fig. 2, after starting programmable logic controller (PLC) step, further includes:
Programmable logic controller (PLC) is connected with infrared thermometer, and the first temperature value is 300 DEG C, and infrared thermometer detects slag
When tank temperature degree is lower than 300 DEG C, information is fed back into programmable logic controller (PLC), programmable logic controller (PLC) issues instruction starting and removes
Dust hood tipple closes dust excluding hood in place, and the sparge pipe on dust excluding hood starts dusting of dripping.
After the temperature for reaching the dusting that can drip by the temperature that infrared temperature temperature measurer measures slag ladle, programmable logic
Controller send a command to dust excluding hood topple device make its overturning in place, carry out drip dusting prepare after, electric control valve open
It starts to work, water flow enters dusting of dripping in slag ladle by electric control valve.
In one embodiment, as shown in Fig. 2, after the atomization step that starts to drip, further includes:
Programmable logic controller (PLC) issues instruction starting dedusting fan and starts to work, and flue gas is at the top of dust excluding hood by wind after discharge
Pipe enters water proof intermediate box, removes wherein bulky grain droplet and dust in water proof intermediate box, then be pressed and delivered to by dedusting fan
Box water bath dust-removing and chimney, the qualified discharge after water bath dust-removing.
Air hose connects dust excluding hood and water proof intermediate box, the flue gas that dusting of dripping generates by air hose enter water proof intermediate box into
Box water bath dust-removing process is entered back into after the preliminary processing of row, passes through smoke stack emission extremely again after so that flue gas is reached the standard of discharge
In atmospheric environment.
In one embodiment, as shown in Fig. 2, programmable logic controller program issues instruction starting motorized adjustment automatically
Valve, according to electromagnetic flowmeter feedback information to programmable logic controller (PLC), infrared thermometer is to slag ladle during moisturizing
Temperature monitors temperature change in real time, and the temperature of programmable logic controller (PLC) combination slag ladle controls electric control valve to the benefit of sparge pipe
Water flow is adjusted, and gives a warning when slag ladle temperature temperature drop curve does not meet normal temperature drop law.
By combining the flow information of electromagnetic flowmeter feedback and the slag ladle temperature information of infrared radiation thermometer reaction, may be programmed
Logic controller can control the water flow size at electric control valve, and the dusting speed of dripping in slag ladle is made to be able to maintain stabilization.
In one embodiment, as shown in Fig. 2, second temperature value is 80 DEG C, the infrared thermometer at slag ladle is shown
When temperature is below 80 DEG C, programmable logic controller (PLC) issues instruction and closes electric control valve, stops moisturizing, temperature is had no after 0.5h
When degree gos up, programmable logic controller (PLC) issues instruction and stops dedusting fan.
After the temperature of slag ladle drops to 80 DEG C, PLC controls electric control valve is closed, and stops dripping
Dusting reaction, completes dusting process of dripping.
In one embodiment, as shown in Fig. 2, programmable logic controller (PLC) issues instruction, start dust excluding hood tipple,
Dust excluding hood is reached into position, programmable logic controller (PLC) is automatically stopped operation, each electrical equipment power-off after 2min, and process terminates.
It drips after atomization process, PLC controls dust excluding hood is opened, each device powers down, for drop next time
Water-atomised process is ready.
In one embodiment, the flow that initially drips of sparge pipe fills the quantity of slag according to slag ladle and controls in 0.5-1m3/h, first
2h is maintained under beginning flow, combined water consumption and temperature drop degree, programmable logic controller program are pressed through moisturizing data model certainly
It is dynamic to adjust subsequent rate of water make-up.
By combining the decrease speed of slag ladle temperature and the speed of water consumption, PLC controls motorized adjustment
Valve adjusts suitable flow, guarantees to drip dusting speed in a reasonable range in slag ladle, avoids dusting excessive velocities
Caused by reaction imperfect and speed consume the more time slowly excessively.
In one embodiment, as shown in figure 3, the tangential direction of air hose 401 is equipped with wash tub pipe 501, wash tub pipe
501 per hour auto-flushing 3min to avoid dust block pipeline, the bottom of water proof intermediate box 402 offer opening for arranging
Water.
The steam and dust that accumulate in air hose 401 is discharged by wash tub pipe 501, the dust etc. of long time integration is avoided to make
The problem of blocking at air hose 401, can be by the dust inside water proof intermediate box 402 by the opening of 402 bottom of water proof intermediate box
Discharge is cleared up with the droplet of accumulation, keeps the removal effect in water proof intermediate box 402 to dust and droplet.
In one embodiment, as shown in figure 4, there are three the settings of infrared thermometer 302, three infrared thermometers
302 are respectively aligned to the upper, middle and lower position of slag ladle 301.
Three infrared thermometers 302 detect the temperature of 301 3 different parts of slag ladle, improve detection slag ladle
The accuracy of 301 temperature.
In one embodiment, as shown in figure 4, dust excluding hood tipple 20 includes electric drive hydraulic thruster 201, electric hydaulic
Push rod 201 realizes the automatic turning of dust excluding hood tipple 20 by PLC controls.
For electric hydaulic bar 201 by PLC controls, structure is simple, can be realized dust excluding hood tipple
20 closing and the automatic control of folding.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
- The dusting flue gas ash removal method 1. casting residue drips characterized by comprisingWhen the slag ladle for filling casting residue run to drip dusting station after, start programmable logic controller (PLC)；The temperature of slag ladle described in real-time detection drips the slag ladle when the temperature of the slag ladle is lower than the first temperature value It is water-atomised；It is worked based on the PLC controls dedusting fan, the flue gas formed in the slag ladle is taken out by dust excluding hood To water proof intermediate box, flue gas passes through smoke stack emission after handling by water bath dust-removing after dedusting fan pressurizes；It is worked based on the PLC controls electric control valve, the flow to drip to be adjusted, when described When the temperature of slag ladle is lower than second temperature value, electric control valve described in the PLC controls stops working.
- The dusting flue gas ash removal method 2. casting residue according to claim 1 drips, which is characterized in that may be programmed and patrol in starting After collecting controller step, further includes:The programmable logic controller (PLC) is connected with infrared thermometer, and first temperature value is 300 DEG C, and the infrared ray is surveyed When Wen Yi detects the slag ladle temperature lower than 300 DEG C, information is fed back into the programmable logic controller (PLC), it is described programmable Logic controller issues instruction starting dust excluding hood tipple, and dust excluding hood is closed in place, the water spray on the dust excluding hood Pipe starts dusting of dripping.
- The dusting flue gas ash removal method 3. casting residue according to claim 1 drips, which is characterized in that starting dusting of dripping After step, further includes:The programmable logic controller (PLC) issues instruction and starts the dedusting fan start-up operation, and flue gas is at the top of the dust excluding hood Enter the water proof intermediate box by air hose after discharge, removes wherein bulky grain droplet and dust in the water proof intermediate box, then Box water bath dust-removing and chimney are pressed and delivered to by the dedusting fan, the qualified discharge after water bath dust-removing.
- The dusting flue gas ash removal method 4. casting residue according to claim 1 drips, which is characterized in that in starting dedusting fan After start-up operation step, further includes:Programmable logic controller program issues instruction starting electric control valve automatically, according to electromagnetic flowmeter feedback information, institute It states electric control valve the refill flow of sparge pipe is adjusted, infrared thermometer real time monitoring temperature becomes during moisturizing Change, is given a warning when temperature drop curve does not meet normal temperature drop law.
- The dusting flue gas ash removal method 5. casting residue according to claim 2 drips, which is characterized in that the second temperature value It is 80 DEG C, when the infrared thermometer displays temperature at the slag ladle is below 80 DEG C, the Programmable logical controller Device issues instruction and closes the electric control valve, stops moisturizing, when having no temperature recovery after 0.5h, the Programmable logical controller Device issues instruction and stops the dedusting fan.
- The dusting flue gas ash removal method 6. casting residue according to claim 1 drips, which is characterized in that closing dedusting fan The step of after, further includes:The programmable logic controller (PLC) issues instruction, starts the dust excluding hood tipple, dust excluding hood is reached position, after 2min Programmable logic controller (PLC) is automatically stopped operation, each electrical equipment power-off, and process terminates.
- The dusting flue gas ash removal method 7. casting residue according to claim 2 drips, it is characterised in that: at the beginning of the sparge pipe Beginning drip flow according to the control of the slag ladle built-in quantity of slag in 0.5-1m3/h, 2h, combined water consumption are maintained under initial flow And temperature drop degree, electric control valve described in the PLC controls automatically adjust the subsequent flow that drips.
- The dusting flue gas ash removal method 8. casting residue according to claim 3 drips, it is characterised in that: the air hose it is tangential Direction is equipped with wash tub pipe, and auto-flushing 3min to avoid dust blocks pipeline, the water proof to the wash tub pipe per hour The bottom of intermediate box offers opening for draining.
- The dusting flue gas ash removal method 9. casting residue according to claim 2 drips, it is characterised in that: the infrared thermometry There are three instrument settings, and three infrared thermometers are respectively aligned to the upper, middle and lower position of the slag ladle.
- The dusting flue gas ash removal method 10. casting residue according to claim 2 drips, it is characterised in that: the dust excluding hood inclines Turning-up devices include electric drive hydraulic thruster, and the electric drive hydraulic thruster is realized described by the PLC controls The automatic turning of dust excluding hood tipple.
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| CN207493407U (en) * | 2017-08-18 | 2018-06-15 | 广东金威达彩印有限公司 | A kind of dust pelletizing system of printing machine |
| CN208097651U (en) * | 2018-03-09 | 2018-11-16 | 长春优创精密机械有限公司 | Air filter with piezoelectric element |
| CN208260428U (en) * | 2018-04-27 | 2018-12-21 | 李伟 | A kind of industrial waste gas desulfation dust-extraction device |
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Application publication date: 20191126 |