CN106949743A - A kind of control system and method cooled down for high-temperature solid bulk cargo in moving bed - Google Patents
A kind of control system and method cooled down for high-temperature solid bulk cargo in moving bed Download PDFInfo
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- CN106949743A CN106949743A CN201710113947.7A CN201710113947A CN106949743A CN 106949743 A CN106949743 A CN 106949743A CN 201710113947 A CN201710113947 A CN 201710113947A CN 106949743 A CN106949743 A CN 106949743A
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- temperature
- discharge gate
- bulk cargo
- slag
- stopper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- 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
- C21B3/08—Cooling slag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/02—Ohmic resistance heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
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- 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
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of control system and method cooled down for high-temperature solid bulk cargo in moving bed, by the important parameter for monitoring high-temperature solid bulk cargo in moving bed, by the discharge rates, fan delivery and the slag dropping tube flow that control vibration discharging machine, so that the bed of material maintains certain altitude in bed, and ensure appropriate cooling, high temperature bulk material is reached preferable heat transfer requirements in moving bed；Specific control thinking can be summarized as：According to the monitoring signals of bulk cargo temperature at bulk material pile build-up surface temperature, bulk cargo accumulation horizon material height and discharge gate, the slag flow that falls of air quantity, the discharge velocity of vibrated bed and slag dropping tube to cooling down wind carries out in real time effectively control, reasonable set has been carried out to the priority level of control parameter in control process, make the Boiler pressure control of cooling wind, the discharge velocity control of vibrated bed and slag dropping tube falls perfect coupling between the control of slag flow, effective control of various working can be achieved, the appropriateness of the cooling effect of high-temperature solid bulk cargo in moving bed is significantly increased.
Description
Technical field
It is more particularly to a kind of to be used for high-temperature solid bulk cargo in moving bed the present invention relates to blast furnace slag waste heat recovery technology field
The control system and method for cooling.
Background technology
At present, China is global maximum steel producing country, and iron and steel output keeps the first in the world in continuous 17 years.2014
Chinese pig iron yield reaches 7.11 hundred million tons, accounts for world steel total output 60%.In steel smelting procedure, it will produce a large amount of high
Warm slag.According to estimates, the slag discharging temperature of blast furnace slag may be up to 1400~1550 DEG C, and high temperature blast furnace slag per ton is understood by calculating
Sensible heat value may be up to 1260~1880MJ/ tons, equivalent to 60kg standard coals/ton.According to statistics, based on the existing smelting iron and steel of China
Technology, 0.3 ton of blast furnace slag will be produced by often producing 1 ton of pig iron, be calculated, can be converted into current 7.11 hundred million tons of China's pig iron yield
Produce more than 2.13 hundred million tons of blast furnace slag, equivalent to 12,780,000 tons standard coals of its sensible heat amount.
At present, the processing method that steel mill of China commonly uses to high temperature blast furnace slag is water quenching granulating method, by high temperature blast furnace slag
Carry out after water quenching granulating processing, for cement producting material.Although water quenching granulating method realizes the extensive utilization of blast furnace slag, but
Processing procedure need to consume great lot of water resources, it is estimated that 1 ton of high-temperature slag of processing, about need 1 ton of consumption of new water, cycling use of water about 10
Ton.In addition, discharging substantial amounts of H during water quenching2S and SO2Gas, corrosion building, destruction equipment and aggravating working environment, together
When produce a large amount of vapor, cause the huge waste of high level sensible heat contained by blast furnace slag.
Progress slag particle is directly or indirectly contacted with heat transfer medium using high temperature blast furnace slag for dry method treatment technology and sensible heat is returned
Receive, do not expend the water resource of preciousness in processing procedure, also hardly discharge H2S and SO2Deng pernicious gas.As China is to steel
All one's effort of industry energy-saving emission reduction work is promoted, and high temperature blast furnace slag dry method centrifugal granulation technology receives highest attention in the industry.
In dry method centrifugal granulation processing procedure, the full-bodied slag of high temperature throws away rotating disk surface and interface by the rotating disk rotated at a high speed, in the air
The heat transfer medium formed in drop, these small drops and space, generally air, carry out strong direct heat transfer, make liquid
Temperature reduction is dripped, its droplet surface is undergone phase transition, solidification layer is formed, as temperature is further reduced, drop is gradually transformed into
Solid granule.Because the rotating speed of granulation turntable is exceedingly fast, typically up to 1000-2000r/min causes cutting for drop
It is exceedingly fast to speed so that drop is limited in the circumferential heat exchange spatially of rotating disk, and now droplet surface is only capable of forming layer
Solidification layer, internal layer is still in liquid phase, and particle bulk temperature still may be up to 800-900 DEG C.For further reduction particle temperature, need to strengthen
Heat exchange of the particle in moving bed.Now, cool time of the high-temperature particle (high-temperature solid bulk cargo) in moving bed, cooling air quantity
And discharge velocity, become the control key factor of steel slag waste heat recovery and utilization technology.Therefore, it is necessary to seek it is a kind of reliable,
The appropriate cooling effect of high-temperature solid bulk cargo in effective new control system and method, control moving bed, final realization is preferable
Deslagging temperature.
The content of the invention
The mesh of the present invention is to provide a kind of control system and method cooled down for high-temperature solid bulk cargo in moving bed, is led to
Cross the important parameter of high-temperature solid bulk cargo in monitoring moving bed, by control to vibrate the discharge rates of discharging machine, fan delivery and
Slag dropping tube flow so that the bed of material maintains certain altitude in bed, and ensures appropriate cooling, makes high temperature bulk material be reached in moving bed
Preferable heat transfer requirements.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of control system cooled down for high-temperature solid bulk cargo in moving bed, including granulation storehouse, slag dropping tube and rotating disk；Fall
Slag pipe fall cinder notch from granulation storehouse top center stretch into granulation storehouse in；Rotating disk falls immediately below cinder notch positioned at slag dropping tube；Rotating disk connects
Revolving cup electric rotating machine is connected to, the rotating shaft periphery of revolving cup electric rotating machine is provided with edge wind pipe wall；Being granulated storehouse includes water-cooling wall, water-cooling wall
Top the first infrared radiation thermometer, the first radar level gauge, the second radar level gauge and the second infrared radiation thermometer are installed；Water-cooled
Some air outlets are additionally provided with the top of wall；The bottom of water-cooling wall is provided with the first vibrated bed and the second vibrated bed, the first vibration electricity
Machine and the second vibrating motor are located at below the first vibrated bed and the second vibrated bed respectively；Side is respectively arranged above first vibrated bed
The second discharge gate and the second air compartment entrance are arranged in side above first discharge gate and the first air compartment entrance, the second vibrated bed；First
Air compartment entrance and the second air compartment entrance top arrange the blast cap of marshalling, the first vibrated bed and the second vibrated bed and edge wind
It is flexible coupling between tube wall by the first vibrating spring with the second vibrating spring；It is slag dropping tube outlet directly over rotating disk, first shakes
Directly contacted above dynamic bed and the second vibrated bed with bulk cargo accumulation horizon in granulation storehouse；Distinguish at first discharge gate and the second discharge gate
Arrange the first thermocouple and the second thermocouple.
Further, the installation site of the first radar level gauge and the second radar position meter is shaken positioned at the first vibrated bed and second
On dynamic bed center line；First infrared radiation thermometer and the second infrared radiation thermometer installation site are located at the first vibrated bed and the second vibrated bed
Top top center.
Further, the also includes two grades of molten slag caching systems；Two grades of molten slag caching systems are included outside cinder ladle
Shell, stopper, slag dropping tube and seal closure；Slag inlet arranged at the top of cinder ladle shell, and bottom sides are provided with some slag notches, slag notch by
Brick cup is constituted with metering nozzle；One slag notch is correspondingly arranged a stopper, and stopper includes stopper head, stopper bar and stopper control
Device, brick cup is provided with interconnected brick cup runner and metering nozzle accommodating cavity, and metering nozzle is installed on metering nozzle and housed
In chamber；Brick cup runner one end connection cinder ladle enclosure houses the inner chamber of slag, and the other end connects the metering nozzle of metering nozzle
The entrance of inner flow passage；Stopper bar one end connection plug caput, other end connection control device for stopper；Control device for stopper is used to control
Flow area between stopper head and metering nozzle；Seal closure is set outside metering nozzle, and seal closure bottom sets slag dropping tube.
Further, contact-free level monitoring device and burner are provided with the top of cinder ladle shell, for monitoring
The concurrent heating of molten slag liquid level and molten slag in cinder ladle.
Further, non-contact temperature monitoring device and contact-free level prison are provided with the top of seal closure shell
Device is surveyed, seal closure side can be opened with top surface, and seal closure is tightly connected with cinder ladle housing flange.
Further, metering nozzle, stopper head are made up of the refractory material of anticorrosive abrasion, and stopper bar is high temperature resistant gold
Category material is made, and stopper bar is connected with stopper head thread.
Further, slag dropping tube outer cladding insulation material；Slag dropping tube is arranged on cinder ladle shell sidepiece.
Further, stopper is arranged on outside cinder ladle, and stopper is in 10 ° of -30 ° of angles, metering nozzle with horizontal direction
Runner is the non-constant section runner of first tapered rear flaring；Metering nozzle inner flow passage entrance converging transition top is with horizontal direction angle
100 ° -110 °, the tapered pars infrasegmentalis of footpath mouth of a river inner flow passage entrance and horizontal direction angle are 15 ° -25 °, the outlet of footpath mouth of a river inner flow passage
Divergent segment is turbination structure, and divergent segment top and horizontal direction angle are 15 ° -25 °, and flaring pars infrasegmentalis is pressed from both sides with horizontal direction
Angle is 5 ° -15 °.
Further, when flow exceedes setting value, control device for stopper is fed forward, reduces stopper head and metering nozzle
Circulation area between runner, and then reduce slag flow；When flow is less than setting value, control device for stopper is provided backward, is expanded
Circulation area between stopper head and metering nozzle runner, and then increase slag flow.
A kind of control method of the control system cooled down for high-temperature solid bulk cargo in moving bed, including：
1) monitored and dissipated above the first vibrated bed and the second vibrated bed by the first infrared radiation thermometer and the second infrared radiation thermometer
The temperature of stockpile build-up surface；Pass through the first radar level gauge and the second radar position meter the first vibrated bed of monitoring and the second vibrated bed
The controlling level of top bulk cargo accumulation horizon；Pass through the first thermocouple and second the first discharge gate of thermocouple monitoring and the second discharge gate
Locate the temperature of bulk cargo；
2) to ensure that important parameter obtains Reasonable Regulation And Control in running, the priority level to important parameter is rationally arranged
Sequence, i.e. bulk cargo accumulation horizon Level control are the first priority, and bulk material pile build-up surface temperature control is the second priority, first row
The temperature control of bulk cargo is third priority at material mouth and the second discharge gate；
3) it is that the controlling level for ensuring bulk cargo accumulation horizon in running is maintained in rated range, specifically includes：When scattered
When the controlling level of stockpile lamination is higher than high warning material position, the discharge velocity of the first vibrated bed of increase and the second vibrated bed makes to dissipate
Stockpile lamination is maintained in rated range；When the controlling level of bulk cargo accumulation horizon is less than low warning material position, reduction by first is vibrated
The discharge velocity of bed and the second vibrated bed, makes bulk cargo accumulation horizon maintain in rated range；
4) it is to ensure that bulk material pile build-up surface temperature control in rated range, is specifically included in running：Work as bulk cargo
When accumulation horizon surface temperature is higher than high warning temperature, reduces slag dropping tube flow, maintain bulk material pile build-up surface temperature specified
In the range of；When bulk material pile build-up surface temperature is less than low warning temperature, increases slag dropping tube flow, make bulk material pile build-up surface temperature
Degree is maintained in rated range；
5) to ensure that the dump temperature in running at the first discharge gate and the second discharge gate is controlled in rated range,
Specifically include：When dump temperature at the first discharge gate and the second discharge gate is higher than high warning temperature, the first discharge gate is reduced
And the second discharge velocity at discharge gate, the first air compartment entrance of increase and the second air compartment entrance air quantity, if the first discharge gate and the
Dump temperature at two discharge gates is in rated range, then stops the first air compartment entrance of increase and the second air compartment entrance air quantity；
If the dump temperature at the first discharge gate and the second discharge gate remains above high warning temperature, and the first air compartment entrance and the second air compartment
Entrance air quantity is in maximum, then increases revolving cup edge wind air quantity, if the dump temperature at the first discharge gate and the second discharge gate
In rated range, then stop the air quantity of increase revolving cup edge wind；If the discharge temperature at the first discharge gate and the second discharge gate
Degree remains above high warning temperature, and revolving cup edge wind air quantity is in maximum, then reduces slag dropping tube flow, if the first discharge gate and
The dump temperature of second discharge gate is in rated range, then stops reducing slag dropping tube flow；When the first discharge gate and second row
When the dump temperature of material mouth is less than low warning temperature, air compartment air quantity is reduced, if the discharge temperature of the first discharge gate and the second discharge gate
Degree stops reduction air compartment air quantity in rated range, then；If the dump temperature of the first discharge gate and the second discharge gate is still below
Low warning temperature, and the first air compartment entrance and the second air compartment entrance air quantity are in minimum value, then reduce revolving cup edge wind air quantity, if
The dump temperature of first discharge gate and the second discharge gate is in rated range, then stops reducing revolving cup edge wind air quantity；If the
The dump temperature of one discharge gate and the second discharge gate is still below low warning temperature, and revolving cup edge wind air quantity is in minimum value, then
Increase slag dropping tube flow, if the dump temperature of the first discharge gate and the second discharge gate is in rated range, stops increase and fall
Slag pipe flow.
Relative to prior art, the invention has the advantages that：
1st, the present invention is arranged in a cooling system can monitor the high-precision meter of important parameter, can monitor bulk cargo accumulation
The infrared radiation thermometer of layer surface temperature, the high radar level gauge of bulk cargo accumulation horizon material can be monitored and bulk cargo temperature at discharge gate can be monitored
The thermocouple of degree, the important parameter contributed in monitoring high temperature bulk material cooling procedure in real time, is high-temperature solid bulk cargo in moving bed
Appropriate Cooling Control Technology provide basis.
2nd, the present invention is carried out to ensure that the high-temperature solid bulk cargo in moving bed can obtain appropriate cooling from three aspects
Control, that is, cool down discharge velocity control and the slag dropping tube of the Boiler pressure control (air compartment air quantity, revolving cup edge wind air quantity), vibrated bed of wind
Fall slag flow control, pass through the reasonable control to these three aspects, it is ensured that the appropriateness of high-temperature solid bulk cargo is cold in moving bed
But effect.
3rd, the monitoring of the invention according to bulk cargo temperature at bulk material pile build-up surface temperature, bulk cargo accumulation horizon material height and discharge gate
Signal, carries out in real time effectively control to cooling down the slag flow that falls of air quantity, the discharge velocity of vibrated bed and slag dropping tube of wind, controlled
The priority level of control parameter (the cooling air quantity of wind, the discharge velocity of vibrated bed and slag dropping tube fall slag flow) is carried out in journey
Rational setting, makes the discharge velocity control of the Boiler pressure control (air compartment air quantity, revolving cup edge wind air quantity), vibrated bed of cooling wind
And slag dropping tube falls perfect coupling between the control of slag flow, effective control of various working can be achieved, is significantly increased in moving bed
The appropriateness of the cooling effect of high-temperature solid bulk cargo.
Important parameter of the invention by monitoring high-temperature solid bulk cargo in moving bed, passes through the discharge for controlling to vibrate discharging machine
Speed, fan delivery and slag dropping tube flow so that the bed of material maintains certain altitude in bed, and ensures appropriate cooling, dissipates high temperature
Material reaches preferable heat transfer requirements in moving bed；Specific control thinking can be summarized as：According to bulk material pile build-up surface temperature, dissipate
Stockpile lamination material is high and discharge gate at bulk cargo temperature monitoring signals, to cooling down the air quantity of wind, the discharge velocity of vibrated bed and falling
The slag flow that falls of slag pipe is carried out in real time in effectively control, control process to control parameter (air quantity of cooling wind, the discharge of vibrated bed
Speed and slag dropping tube fall slag flow) priority level carried out reasonable set, make cooling wind Boiler pressure control (air compartment air quantity,
Revolving cup edge wind air quantity), the control of the discharge velocity of vibrated bed and slag dropping tube fall perfect coupling between the control of slag flow, can be achieved
Effective control of various working, is significantly increased the appropriateness of the cooling effect of high-temperature solid bulk cargo in moving bed.
Brief description of the drawings
The present invention is described in further details with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of control system top view cooled down for high-temperature solid bulk cargo in moving bed of the present invention；
Fig. 2 is the sectional view of the line A-A along along Fig. 1；
Fig. 3 is the sectional view of the line B-B along along Fig. 1；
Fig. 4 is the sectional view of the line C-C along along Fig. 2；
Fig. 5 is the structural representation of two grades of molten slag caching systems；
Fig. 6 is partial enlarged drawing at metering nozzle；
Fig. 7 is a kind of control logic figure of the control system cooled down for high-temperature solid bulk cargo in moving bed of the present invention.
In figure：1st, the first infrared radiation thermometer；2nd, the first radar level gauge；3rd, slag dropping tube；4th, the second radar level gauge；5th,
Two infrared radiation thermometers；6th, water-cooling wall；7th, the first air outlet；8th, the second air outlet；9th, blast cap；10th, the second air compartment entrance；11st,
Two discharge gates；12nd, the second vibrated bed；13rd, the second vibrating motor；14th, the first vibrating motor；15th, the first vibrated bed；16th, first
Discharge gate；17th, the first air compartment entrance；18th, the second vibrating spring；19th, the first vibrating spring；20th, bulk cargo accumulation horizon；21st, revolving cup
Edge wind；22nd, revolving cup electric rotating machine；23rd, rotating disk；24th, the first thermocouple；25th, the second thermocouple；26th, edge wind pipe wall.
Embodiment
Refer to shown in Fig. 1 to Fig. 5, the present invention relates to blast furnace slag waste heat recovery technology field, more particularly to one kind is used for
High-temperature solid bulk cargo is cooled down in moving bed control system and method.
Refer to shown in Fig. 1 to Fig. 5, a kind of control system cooled down for high-temperature solid bulk cargo in moving bed, including grain
Change storehouse, slag dropping tube 3 and rotating disk 23.Slag dropping tube 3 fall cinder notch from granulation storehouse top center stretch into granulation storehouse in；Rotating disk 23 is located to fall
Slag pipe 3 falls immediately below cinder notch.
Rotating disk 23 is connected with revolving cup electric rotating machine 22；The rotating shaft periphery of revolving cup electric rotating machine 22 is provided with edge wind pipe wall 26；
Being granulated storehouse includes water-cooling wall 6, and the top of water-cooling wall 6 is provided with the first infrared radiation thermometer 1, the first radar level gauge 2, the second radar
The infrared radiation thermometer 5 of level-sensing device 4 and second.The top of water-cooling wall 6 is additionally provided with the first air outlet 7 and the second air outlet 8.
The bottom of water-cooling wall 6 is provided with the first vibrated bed 15 and the second vibrated bed 12, and the first vibrating motor 14 and second shake
Dynamic motor 13 is located at the first vibrated bed 15 and the lower section of the second vibrated bed 12 respectively；First vibrated bed 15 and the top of the second vibrated bed 12
Side is respectively arranged the first discharge gate 16 and the second discharge gate 11, the first air compartment entrance 17 and the second air compartment entrance 10；First wind
The blast cap 9 of marshalling, the first vibrated bed 15 and the second vibrated bed 12 are arranged in the top of 17 and second air compartment entrance of chamber inlet 10
It is flexible coupling between edge wind pipe wall 26 by the first vibrating spring 20 with the second vibrating spring 19, cloth in edge wind pipe wall 26
Put and exported directly over revolving cup electric rotating machine 22 and rotating disk 23, rotating disk 23 for slag dropping tube 3, the first vibrated bed 15 and the second vibrated bed 12
Top is directly contacted with bulk cargo accumulation horizon 20, the first discharge gate 16 and the second discharge gate 11 be respectively arranged the first thermocouple 25 and
Second thermocouple 26.
Refer to shown in Fig. 5 and Fig. 6, present invention additionally comprises two grades of molten slag caching systems, two grades of molten slag cachings
System includes cinder ladle shell 101, metering nozzle 106, stopper first 107, stopper control mechanism 108, slag dropping tube 111 and seal closure
110。
Slag inlet is arranged at the top of cinder ladle shell 101, and one or more slag notches are arranged at bottom, and slag notch is by brick cup 100 and sizing
The mouth of a river 106 is constituted；One slag notch is correspondingly arranged a stopper, and stopper includes stopper first 107, stopper bar 109 and stopper control
Device 108, brick cup 100 is provided with interconnected brick cup runner 201 and metering nozzle accommodating cavity 202, and metering nozzle is installed on
In metering nozzle accommodating cavity；Brick cup runner one end connection cinder ladle enclosure houses the inner chamber of slag, other end connection sizing water
The entrance of the metering nozzle inner flow passage of mouth；Stopper bar one end connection plug caput, other end connection control device for stopper；Stopper control
Device is used to control the flow area between stopper head and metering nozzle.The outside of metering nozzle 106 is provided with corresponding seal closure
110, the bottom of seal closure is provided with slag dropping tube 111；Cinder ladle shell 101 is made up of high-temperature refractory with box hat.Molten slag
Slag inlet is flowed into above from cinder ladle, and is temporarily stored into cinder ladle, and molten slag passes through metering nozzle from the bottom sides of cinder ladle shell 101
106 sealed covers 110 flow into slag dropping tube 111, then flow to lower section granulation system.
Stopper is arranged on outside cinder ladle, and stopper is with horizontal direction in 10 ° of -30 ° of angles, the inner flow passage 1060 of metering nozzle 106
For the non-constant section runner of first tapered rear flaring.Footpath mouth of a river inner flow passage entrance converging transition top and horizontal direction angle be 100 °-
110 °, the tapered pars infrasegmentalis of metering nozzle inner flow passage entrance and horizontal direction angle are 15 ° -25 °, footpath mouth of a river inner flow passage outlet flaring
Section is turbination structure, and divergent segment top and horizontal direction angle are 15 ° -25 °, and flaring pars infrasegmentalis is with horizontal direction angle
5°-15°.When flow is excessive, control device for stopper 108 is fed forward, reduces the circulation between stopper first 107 and metering nozzle runner
Area, and then reduce slag flow.When flow is too small, control device for stopper 108 is provided backward, expands stopper first 107 and sizing
Circulation area between inlet flow channel, and then increase slag flow.Brick cup, metering nozzle, stopper head material grind for high-temperature corrosion-resistance
The refractory material of erosion, stopper bar is made up of refractory metal material.
After stopper first 107 is denuded by slag corrosion, it can be adjusted by control device for stopper 108, into metering nozzle 106
Stopper first 107 is fed, continues the control for keeping stopper to slag flow, extends stopper service life.When metering nozzle 106 and plug
Caput 107 corrode it is more serious can not be in use, the passage of slag notch brick cup 100, rapid-replacing sizing runner pipe can be blocked with stemming
106 and stopper first 107, the influence to system operation is smaller.
The molten slag liquid level in slag dropping tube liquid level detection device 104, detection slag dropping tube 111 is installed at the top of seal closure 110,
Molten slag instantaneous delivery is obtained by Flow Meter Based and feeds back to control device for stopper 108.When liquid level is too high, stopper control dress
Put 108 to be fed forward, reduce the circulation area between stopper first 07 and metering nozzle 106, and then reduce molten slag flow.Stopper
First 107 be the special refractories that high-temperature corrosion-resistance is denuded, and stopper bar 109 is made up of refractory metal material.
The contact-free level monitoring device 102 on the top of cinder ladle shell 101 monitors liquid level in cinder ladle in real time, can pass through
Liquid level calculates the instant liquid slag buffer memory obtained in cinder ladle, so that distribution is adjusted to molten slag flow, and in liquid
State slag liquid level reaches that warning liquid level alarm closes top slag inlet in time, it is ensured that have enough safe altitudes to prevent in cinder ladle
The accidents such as slag of overflowing occur.
Non-contact temperature monitoring device 105 is installed at the top of seal closure 110, and cinder ladle cover top portion installs burner 103, leads to
The monitoring to molten slag temperature in slag dropping tube 111 is crossed, burner 103 is fed back to, and associate the unlatching and concurrent heating of burner 103
Power；Molten slag transient temperature is fed back into granulation system simultaneously, motor speed is adjusted in time.Seal closure 110 and slag dropping tube
111 outer cladding insulation materials, to reduce radiating, it is ensured that molten slag temperature.
Two grades of molten slag caching systems use the mode of slagging tap from cinder ladle side rather than bottom, are adopted at the slag notch of side
The mode coordinated with metering nozzle 106 and stopper first 107 controls flow of slagging tap, and slag dropping tube 111 is arranged on into cinder ladle shell 101
Sidepiece rather than bottom, and cinder ladle shell 101 and slag dropping tube 111 are connected by seal closure 110.This structure is easy to control flow and easy
In safeguarding change metering nozzle and slag dropping tube, it is to avoid slag is slagged tap from cinder ladle bottom in the prior art causes slag dropping tube to be difficult more
The shortcoming of maintenance is changed, the continuity stability of system is enhanced.
Refer to shown in Fig. 1 to Fig. 7, the important parameter of high-temperature solid bulk cargo in moving bed monitored by high-precision meter,
Specific monitoring parameter includes：Shaken by the first infrared radiation thermometer 1 and the second infrared radiation thermometer 5 the first vibrated bed 15 of monitoring and second
The temperature on the surface of 12 top bulk cargo accumulation horizon of dynamic bed 20；Shaken by the first radar level gauge 2 and the monitoring first of the second radar position meter 4
The controlling level of the top bulk cargo accumulation horizon 20 of 15 and second vibrated bed of dynamic bed 12；Pass through the first thermocouple 24 and the second thermocouple 25
Monitor the temperature of bulk cargo at the first discharge gate 16 and the second discharge gate 11.
Further, need to be to the peace of instrumentation to ensure measurement range needed for instrumentation can be detected in running
Holding position carries out reasonable Arrangement.Specifically include：The installation site of first radar level gauge 2 and the second radar position meter 4 is located at first
On the center line of 15 and second vibrated bed of vibrated bed 12；First infrared radiation thermometer 1 and the installation site of the second infrared radiation thermometer 5 are located at the
One vibrated bed 15 and the top top center of the second vibrated bed 12.
Further, need to be grading to the priority scheduling of important parameter to ensure that important parameter obtains Reasonable Regulation And Control in running
Row rational sorting.Specifically include：The Level control of bulk cargo accumulation horizon 20 is the first priority, the surface temperature control of bulk cargo accumulation horizon 20
The temperature control third priority of bulk cargo at second priority, the first discharge gate 16 and the second discharge gate 11.
Further, to ensure that the controlling level of bulk cargo accumulation horizon 20 in running is maintained in certain rated range,
The controlling level of bulk cargo accumulation horizon need to rationally be controlled.Specific control includes：1) when the controlling level of bulk cargo accumulation horizon 20
During higher than height warning material position, the discharge velocity of the first vibrated bed 15 of increase and the second vibrated bed 12 maintains bulk cargo accumulation horizon 20
In rated range；2) when the controlling level of bulk cargo accumulation horizon 20 is less than low warning material position, the first vibrated bed 15 of reduction and the
The discharge velocity of two vibrated beds 12, makes bulk cargo accumulation horizon 20 maintain in rated range.
Further, to ensure that the surface temperature control of bulk cargo accumulation horizon 20 is right in certain rated range in running
The surface temperature of bulk cargo accumulation horizon 20 is rationally controlled.Specific control includes：1) when the surface temperature of bulk cargo accumulation horizon 20 is higher than height
During warning temperature, reduce the flow of slag dropping tube 3, the surface temperature of bulk cargo accumulation horizon 20 is maintained in rated range；2) bulk material pile is worked as
When the surface temperature of lamination 20 is less than low warning temperature, increases the flow of slag dropping tube 3, the surface temperature of bulk cargo accumulation horizon 20 is maintained volume
Determine in scope.
Further, to ensure that the dump temperature in running at the first discharge gate 16 and the second discharge gate 11 is controlled one
In fixed rated range, the dump temperature at the first discharge gate 16 and the second discharge gate 11 need to rationally be controlled.Specific control
System includes：1) when the dump temperature at the first discharge gate 16 and the second discharge gate 11 is higher than high warning temperature, first row is reduced
Discharge velocity at the discharge gate 11 of material mouth 16 and second, the first air compartment entrance 17 of increase and the air quantity of the second air compartment entrance 10, if the
Dump temperature at one discharge gate 16 and the second discharge gate 11 is in rated range, then stop the first air compartment entrance 17 of increase and
The air quantity of second air compartment entrance 10；If the dump temperature at the first discharge gate 16 and the second discharge gate 11 remains above high warning temperature,
And the first air compartment entrance 17 and the air quantity of the second air compartment entrance 10 are in maximum, then increase the air quantity of revolving cup edge wind 21, if first
Dump temperature at the discharge gate 11 of discharge gate 16 and second is in rated range, then stops the wind of increase revolving cup edge wind 21
Amount；If the dump temperature at the first discharge gate 16 and the second discharge gate 11 remains above high warning temperature, and the wind of revolving cup edge wind 21
Amount is in maximum, then reduces the flow of slag dropping tube 3, if the dump temperature of the first discharge gate 16 and the second discharge gate 11 is in specified
In the range of, then stop reducing slag dropping tube flow；2) when the dump temperature of the first discharge gate 16 and the second discharge gate 11 is less than low police
When guarding against temperature, air compartment air quantity is reduced, if the dump temperature of the first discharge gate 16 and the second discharge gate 11 is in rated range,
Stop reduction air compartment air quantity；If the dump temperature of the first discharge gate 16 and the second discharge gate 11 is still below low warning temperature, and
One air compartment entrance 17 and the air quantity of the second air compartment entrance 10 are in minimum value, then reduce the air quantity of revolving cup edge wind 21, if the first discharge
The dump temperature of the discharge gate 11 of mouth 16 and second is in rated range, then stops reducing the air quantity of revolving cup edge wind 21；If first
The dump temperature of the discharge gate 11 of discharge gate 16 and second is still below low warning temperature, and the air quantity of revolving cup edge wind 21 is in minimum
Value, then increase the flow of slag dropping tube 3, if the dump temperature of the first discharge gate 16 and the second discharge gate 11 is in rated range,
Stop the increase flow of slag dropping tube 3.
Further, to ensure that the temperature of running high temperature solid granule can obtain in real time effectively control, need to rationally it divide
The the first air compartment entrance 17 and the air quantity of the second air compartment entrance 10 of match system, the air quantity of revolving cup edge wind 21.Include altogether in the system
Two-way cools down wind, and first via cooling wind comes from revolving cup edge wind 21, the second tunnel cooling wind come from the first air compartment entrance 17 and
Second air compartment entrance 10.Specific assigning process：1) according to molten slag treating capacity, maximum cooling total blast volume (Q is calculated0)；2)
According to actual conditions, make maximum cooling total blast volume in revolving cup edge wind 21 and the first air compartment entrance 17 and the second air compartment entrance 10
Air compartment carries out reasonable distribution, i.e. revolving cup edge wind (Q1) air quantity (Q with the first air compartment entrance 17 and the second air compartment entrance 102) dimension
Hold rational proportion：Calculated according to system maximum cooling total score amount, initial allocation of the amount of air ratio is the first air compartment entrance：Second air compartment
Entrance：Revolving cup edge wind=40:40:20；During adjustment：The first air compartment entrance air quantity need to be maintained：Second air compartment entrance air quantity
It is assigned as 1:1；Edge wind air quantity and the first air compartment entrance air quantity or the second air compartment entrance air quantity are with the 2% of nominal air delivery, or increase
Or subtract, until dump temperature is less than 105 DEG C.
Finally it should be noted that：Embodiment of above is only to illustrate the present invention without limiting the present invention described technology
Scheme；Therefore, although this specification with reference to above-mentioned embodiment to present invention has been detailed description, this area
It is to be appreciated by one skilled in the art that still can be modified to the present invention or equivalent；And all do not depart from the present invention
The technical scheme of spirit and scope and its improvement, it all should cover in scope of the presently claimed invention.
Claims (10)
1. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed, it is characterised in that including granulation storehouse, slag dropping tube
And rotating disk (23) (3)；Slag dropping tube (3) fall cinder notch from granulation storehouse top center stretch into granulation storehouse in；Rotating disk (23) is located to fall slag
That manages (3) falls cinder notch underface；
Rotating disk (23) is connected with revolving cup electric rotating machine (22), and the rotating shaft periphery of revolving cup electric rotating machine (22) is provided with edge wind pipe wall
(26)；Being granulated storehouse includes water-cooling wall (6), and (60 top is provided with the first infrared radiation thermometer (the 10, first radar material position to water-cooling wall
Count (2), the second radar level gauge (4) and the second infrared radiation thermometer (5)；Water-cooling wall is additionally provided with some air outlets at the top of (6)；
The bottom of water-cooling wall (6) is provided with the first vibrated bed (15) and the second vibrated bed (12), the first vibrating motor (14) and
Two vibrating motors (13) are located at below the first vibrated bed (15) and the second vibrated bed (12) respectively；First vibrated bed (15) upper side
While being respectively arranged the first discharge gate (16) and the first air compartment entrance (17), the second discharge is arranged in side above the second vibrated bed (12)
Mouth (11) and the second air compartment entrance (10)；Marshalling is arranged above first air compartment entrance (17) and the second air compartment entrance (10)
Blast cap (9), pass through the first vibrating spring between the first vibrated bed (15) and the second vibrated bed (12) and edge wind pipe wall (26)
(20) it is flexible coupling with the second vibrating spring (19)；It is slag dropping tube (3) outlet, the first vibrated bed (15) directly over rotating disk (23)
And second directly contact with bulk cargo accumulation horizon (20) in granulation storehouse above vibrated bed (12)；First discharge gate (16) and the second discharge
Mouth (11) place is respectively arranged the first thermocouple (25) and the second thermocouple (26).
2. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 1, its feature exists
In the installation site of the first radar level gauge and the second radar position meter is located on the first vibrated bed and the second vibrated bed center line；
First infrared radiation thermometer and the second infrared radiation thermometer installation site are located at top center above the first vibrated bed and the second vibrated bed.
3. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 1, its feature exists
In also including two grades of molten slag caching systems；Two grades of molten slag caching systems include cinder ladle shell, stopper, slag dropping tube and
Seal closure；Slag inlet is arranged at the top of cinder ladle shell, and bottom sides are provided with some slag notches, and slag notch is by brick cup and metering nozzle group
Into；One slag notch is correspondingly arranged a stopper, and stopper includes stopper head, stopper bar and control device for stopper, and brick cup is provided with
Interconnected brick cup runner and metering nozzle accommodating cavity, metering nozzle is installed in metering nozzle accommodating cavity；Brick cup runner one
End connection cinder ladle enclosure houses the inner chamber of slag, the entrance of the metering nozzle inner flow passage of other end connection metering nozzle；Plug
Bar one end connection plug caput, other end connection control device for stopper；Control device for stopper is used to control stopper head and sizing water
Flow area between mouthful；Seal closure is set outside metering nozzle, and seal closure bottom sets slag dropping tube.
4. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 3, its feature exists
In contact-free level monitoring device and burner being provided with the top of cinder ladle shell, for monitoring the molten slag in cinder ladle
The concurrent heating of liquid level and molten slag.
5. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 3, its feature exists
In being provided with non-contact temperature monitoring device and contact-free level monitoring device, seal closure side at the top of seal closure shell
Face can be opened with top surface, and seal closure is tightly connected with cinder ladle housing flange.
6. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 3, its feature exists
In metering nozzle, stopper head are made up of the refractory material of anticorrosive abrasion, and stopper bar is made up of refractory metal material, stopper
Bar is connected with stopper head thread.
7. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 3, its feature exists
In slag dropping tube outer cladding insulation material；Slag dropping tube is arranged on cinder ladle shell sidepiece.
8. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 3, its feature exists
In, stopper is arranged on outside cinder ladle, stopper and horizontal direction in 10 ° of -30 ° of angles, metering nozzle inner flow passage for after first tapered gradually
The non-constant section runner of expansion；Metering nozzle inner flow passage entrance converging transition top and horizontal direction angle are 100 ° -110 °, the footpath mouth of a river
The tapered pars infrasegmentalis of inner flow passage entrance and horizontal direction angle are 15 ° -25 °, and footpath mouth of a river inner flow passage outlet divergent segment is turbination
Structure, divergent segment top and horizontal direction angle are 15 ° -25 °, and flaring pars infrasegmentalis and horizontal direction angle are 5 ° -15 °.
9. a kind of control system cooled down for high-temperature solid bulk cargo in moving bed according to claim 3, its feature exists
In when flow exceedes setting value, control device for stopper is fed forward, reduces the circulating face between stopper head and metering nozzle runner
Product, and then reduce slag flow；When flow is less than setting value, control device for stopper is provided backward, expands stopper head and sizing water
Circulation area between mouth runner, and then increase slag flow.
10. it is a kind of for the control system of high-temperature solid bulk cargo cooling in moving bed any one of claim 1 to 9
Control method, it is characterised in that including：
1) the first vibrated bed (15) and the second vibrated bed are monitored by the first infrared radiation thermometer (1) and the second infrared radiation thermometer (5)
(12) temperature on top bulk cargo accumulation horizon (20) surface；Pass through the first radar level gauge (2) and the second radar position meter (4) monitoring the
The controlling level of bulk cargo accumulation horizon (20) above one vibrated bed (15) and the second vibrated bed (12)；By the first thermocouple (24) and
Second thermocouple (25) monitors the temperature of the first discharge gate (16) and the second discharge gate (11) place bulk cargo；
2) to ensure that important parameter obtains Reasonable Regulation And Control in running, the priority level to important parameter carries out rational sorting,
I.e. bulk cargo accumulation horizon (20) Level control is the first priority, and bulk cargo accumulation horizon (20) surface temperature control is the second priority,
The temperature control of first discharge gate (16) and the second discharge gate (11) place bulk cargo is third priority；
3) it is that the controlling level for ensuring bulk cargo accumulation horizon (20) in running is maintained in rated range, specifically includes：When scattered
When the controlling level of stockpile lamination (20) is higher than high warning material position, the row of the first vibrated bed of increase (15) and the second vibrated bed (12)
Expect speed, bulk cargo accumulation horizon (20) is maintained in rated range；When the controlling level of bulk cargo accumulation horizon (20) is less than low warning
During material position, the discharge velocity of the first vibrated bed of reduction (15) and the second vibrated bed (12) makes bulk cargo accumulation horizon (20) maintain volume
Determine in scope；
4) it is to ensure that bulk cargo accumulation horizon (20) surface temperature control in rated range, is specifically included in running：Work as bulk cargo
When accumulation horizon (20) surface temperature is higher than high warning temperature, reduces slag dropping tube (3) flow, make bulk cargo accumulation horizon (20) surface temperature
Maintain in rated range；When bulk cargo accumulation horizon (20) surface temperature is less than low warning temperature, increase slag dropping tube (3) flow,
Bulk cargo accumulation horizon (20) surface temperature is set to maintain in rated range；
5) it is to ensure that the first discharge gate (16) and the control of the dump temperature at the second discharge gate (11) place are in specified model in running
In enclosing, specifically include：When the first discharge gate (16) and the dump temperature at the second discharge gate (11) place are higher than high warning temperature, drop
Low first discharge gate (16) and the discharge velocity at the second discharge gate (11) place, the first air compartment entrance (17) of increase and the second air compartment enter
Mouth (10) air quantity, if the first discharge gate (16) and the dump temperature at the second discharge gate (11) place are in rated range, stops
Increase the first air compartment entrance (17) and second air compartment entrance (10) air quantity；If the first discharge gate (16) and the second discharge gate (11) place
Dump temperature remain above high warning temperature, and the first air compartment entrance (17) and second air compartment entrance (10) air quantity are in maximum
Value, then increase revolving cup edge wind (21) air quantity, if the dump temperature at the first discharge gate (16) and the second discharge gate (1) 1 is in
In rated range, then stop the air quantity of increase revolving cup edge wind (21)；If the first discharge gate (16) and the second discharge gate (11) place
Dump temperature remain above high warning temperature, and revolving cup edge wind (21) air quantity is in maximum, then reduces slag dropping tube (3) stream
Amount, if the dump temperature of the first discharge gate (16) and the second discharge gate (11) is in rated range, stops reducing slag dropping tube
Flow；When the dump temperature of the first discharge gate (16) and the second discharge gate (11) is less than low warning temperature, air compartment air quantity is reduced,
If the dump temperature of the first discharge gate (16) and the second discharge gate (11) is in rated range, stop reduction air compartment air quantity；
If the dump temperature of the first discharge gate (16) and the second discharge gate (11) is still below low warning temperature, and the first air compartment entrance (17)
And second air compartment entrance (10) air quantity be in minimum value, then reduce revolving cup edge wind (21) air quantity, if the first discharge gate (16) and
The dump temperature of second discharge gate (11) is in rated range, then stops reducing revolving cup edge wind (21) air quantity；If first row
The dump temperature of material mouth (16) and the second discharge gate (11) is still below low warning temperature, and revolving cup edge wind (21) air quantity is in most
Small value, then increase slag dropping tube (3) flow, if the dump temperature of the first discharge gate (16) and the second discharge gate (11) is in specified model
In enclosing, then stop increase slag dropping tube (3) flow.
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Cited By (3)
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| CN108330233A (en) * | 2018-02-26 | 2018-07-27 | 西安交通大学 | A kind of molten slag dry-type centrifugal granulation and residual neat recovering system with slag caching and flow control function |
| CN109880950A (en) * | 2019-03-19 | 2019-06-14 | 青岛大学 | A kind of molten slag mechanical centrifugal granulation system and method |
| CN109990605A (en) * | 2018-01-02 | 2019-07-09 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling machine and cooling means with fairing |
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| CN105755188A (en) * | 2016-03-11 | 2016-07-13 | 西安交通大学 | Moving bed device for granulating high-temperature liquid slag and recovering high-temperature sensible heat |
| CN106282447A (en) * | 2016-09-21 | 2017-01-04 | 重庆大学 | There is the slag dry granulation waste-heat recovery device of self-regulation and Anti-slagging function |
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| EP1039249A2 (en) * | 1999-03-22 | 2000-09-27 | KERMI GmbH | Valve arrangement |
| CN102492793A (en) * | 2011-12-23 | 2012-06-13 | 东北大学 | Granulation apparatus of molten state metallurgy slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109990605A (en) * | 2018-01-02 | 2019-07-09 | 中冶长天国际工程有限责任公司 | A kind of vertical cooling machine and cooling means with fairing |
| CN109990605B (en) * | 2018-01-02 | 2024-06-11 | 中冶长天国际工程有限责任公司 | Vertical cooler with rectifying device and cooling method |
| CN108330233A (en) * | 2018-02-26 | 2018-07-27 | 西安交通大学 | A kind of molten slag dry-type centrifugal granulation and residual neat recovering system with slag caching and flow control function |
| CN109880950A (en) * | 2019-03-19 | 2019-06-14 | 青岛大学 | A kind of molten slag mechanical centrifugal granulation system and method |
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