CN107328248A - The Industrial Stoves flue gas cleaning system of Industrial Stoves control method and application this method - Google Patents
The Industrial Stoves flue gas cleaning system of Industrial Stoves control method and application this method Download PDFInfo
- Publication number
- CN107328248A CN107328248A CN201710545395.7A CN201710545395A CN107328248A CN 107328248 A CN107328248 A CN 107328248A CN 201710545395 A CN201710545395 A CN 201710545395A CN 107328248 A CN107328248 A CN 107328248A
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- Prior art keywords
- industrial stoves
- gas
- heater
- atmospheric pressure
- pressure lost
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000004140 cleaning Methods 0.000 title claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000003546 flue gas Substances 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 130
- 239000000428 dust Substances 0.000 claims abstract description 66
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- -1 therefore Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- 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
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
- F27D2019/0009—Monitoring the pressure in an enclosure or kiln zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of Industrial Stoves control method and the Industrial Stoves flue gas cleaning system of application this method, the problem of causing to cause potential safety hazard in Industrial Stoves extraneous air infiltration body of heater and influence the normal operation of cleaner is declined to solve air pressure in Industrial Stoves body of heater in the prior art.This method comprises the following steps：A, when judging in Industrial Stoves body of heater that atmospheric pressure lost reaches or will reach that control executing agency injects atmospheric pressure lost compensation gas into Industrial Stoves body of heater after imposing a condition；B, after judging that Industrial Stoves body of heater atmospheric pressure lost obtains control, control executing agency stop into the Industrial Stoves body of heater inject atmospheric pressure lost compensation gas；Wherein, the atmospheric pressure lost compensation gas is a kind of gas for being able to ensure that Industrial Stoves safe operation；In addition, the furnace gas that the step a and step b occurs in the Industrial Stoves is continuously discharged and driven during carrying out dust separation processing to dust arrester.
Description
Technical field
The present invention relates to the control of Industrial Stoves and flue gas cleaning technical field, in particular to a kind of Industrial Stoves
The Industrial Stoves flue gas cleaning system of control method and application this method.
Background technology
Industrial Stoves often produce substantial amounts of high-temperature furnace gas in the process of running, either to the material in these furnace gases
Reclaimed or furnace gas is discharged, be generally required for carrying out dust separation to furnace gas.Existing furnace gas dedusting technology point is dry
Formula dedusting technology and wet dust collection technology, wherein, mainly there are cyclone dust collectors, electricity to remove using the cleaner of dry dust removal technology
Dirt device, smoke filter etc., the furnace gas that Industrial Stoves are discharged enters under the driving of the equipment such as blower fan into these cleaners
Row dust separation is handled.Due in smoke filter using having filter element (such as metal filtering core, ceramic element, cloth bag), mistake
The filter opening of the filter medium of filtering element can allow gas by and retain the dust in gas, therefore, smoke filter is to furnace gas
Carry out dust removal by filtration and be generally capable of up to higher efficiency of dust collection.In the running of smoke filter, the dust meeting filtered out
The surface of filter element is gradually deposited in, on the one hand the filter cake of these dust formation can further improve dust removing effects, but together
When can also reduce the throughput in the unit interval by filter element, therefore, be accomplished by when one section to filter element surface
Dust cleared up.Most common mode is that the dust of filter element surface is cleared up by back-flushing technique.
In Industrial Stoves running in body of heater air pressure stability for cleaner stable operation, particularly to cigarette
The influence of the permeance property of filter element is obvious in air filter, therefore preferably state is by air pressure in Industrial Stoves body of heater
Fluctuation is maintained in a less scope.However, electric furnace, converter for smelting etc. needs intermittent discharge product (such as
The product of steel-smelting electric furnace is molten steel) or clinker Industrial Stoves, intermittence discharge product or clinker operating process in, with
The room for the discharge of product or clinker and being formed in body of heater causes the air pressure in body of heater rapidly to reduce, at this moment, not only
It is easily caused in the infiltration body of heater of the air outside Industrial Stoves and causes potential safety hazard, while can also influences the normal fortune of cleaner
OK.
The content of the invention
It is a primary object of the present invention to provide the Industrial Stoves stove of a kind of Industrial Stoves control method and application this method
Gas cleaning system, causes Industrial Stoves extraneous air to penetrate into body of heater to solve air pressure decline in Industrial Stoves body of heater in the prior art
The problem of inside causing potential safety hazard and influence the normal operation of cleaner.
To achieve these goals, according to an aspect of the invention, there is provided a kind of Industrial Stoves control method.The party
Method comprises the following steps：A, when judging in Industrial Stoves body of heater that atmospheric pressure lost reaches or will reach that control is held after imposing a condition
Row mechanism injects atmospheric pressure lost compensation gas into Industrial Stoves body of heater；B, when judging that Industrial Stoves body of heater atmospheric pressure lost is controlled
After system, control executing agency stops injecting atmospheric pressure lost compensation gas into the Industrial Stoves body of heater；Wherein, the atmospheric pressure lost
Compensation gas is a kind of gas for being able to ensure that Industrial Stoves safe operation；In addition, the step a and step b occurs in the work
During furnace gas in industry kiln is continuously discharged and driven to dust arrester progress dust separation processing.
The present invention the above method can be in good time can ensure that by controlling executing agency to be injected into Industrial Stoves body of heater
The atmospheric pressure lost compensation gas of Industrial Stoves safe operation, can effectively solve the problem that air pressure decline causes industry in Industrial Stoves body of heater
Kiln extraneous air penetrates into the problem of causing potential safety hazard in body of heater, declines while can also reduce air pressure in Industrial Stoves body of heater
Influence to the normal operation of dust arrester.
Further, the atmospheric pressure lost compensation gas derives from the dedusting gas that the dust arrester is discharged, so,
Other gases that would not be introduced outside Industrial Stoves furnace gas, reduction technical scheme implements complexity and cost.Certainly, the gas
Crushing, which loses compensation gas, can also use inert gas or nitrogen.
Further, the dust arrester is temperature gas dust remover so that the conduct gas of dust arrester discharge
Crushing loses fall of the temperature compared to the furnace gas temperature that Industrial Stoves exhaust outlet is discharged of the gas of dedusting of compensation gas
Within 300 DEG C, 250 DEG C, 200 DEG C, 150 DEG C or 100 DEG C.
Dust separation is carried out to it because temperature gas dust remover can be under hot conditions in furnace gas, it is ensured that as
Range of decrease degree is smaller at a temperature of the gas of dedusting of atmospheric pressure lost compensation gas, and atmospheric pressure lost compensation gas can be in small size heating very
Injected under conditions of not heating up in Industrial Stoves body of heater, be so reduced by or cancel to heat atmospheric pressure lost compensation gas
Energy expenditure.
Further, the furnace gas exhaust outlet of the Industrial Stoves is sequentially connected dust arrester and blower fan, the exhaust outlet of blower fan
Flow dividing structure is connected, one of shunting output end of the flow dividing structure connects the atmospheric pressure lost on Industrial Stoves by return duct
The control valve being controlled by controller, the controller and industry are installed on compensation gas air inlet, the return duct
Baroceptor signal connection in kiln, when baroceptor detected value is less than or equal to first threshold, control order
Control valve is opened, and when baroceptor detected value is more than or equal to Second Threshold, control order control valve is closed, wherein,
First threshold≤the Second Threshold.
Further, the Industrial Stoves are to need the Industrial Stoves of intermittent discharge product or clinker, for example electric furnace or
Converter etc.；When then the step a is at least triggered at Industrial Stoves discharge or will discharge product or clinker.
Further, it can result in atmospheric pressure lost in Industrial Stoves body of heater at least one and reach the industry kiln imposed a condition
Stove operation operation is preset, and is being started before default Industrial Stoves operation is operated or is being started default Industrial Stoves operation behaviour
While work, that is, executing agency is controlled to inject atmospheric pressure lost compensation gas into Industrial Stoves body of heater.
It can result in atmospheric pressure lost in Industrial Stoves body of heater due to having preset and reach that impose a condition Industrial Stoves run behaviour
Make, before the default Industrial Stoves operation operation of startup or control executing agency to inject air pressure into Industrial Stoves body of heater simultaneously
Compensating for loss and damage gas, is controlled again without waiting detecting air pressure in Industrial Stoves body of heater and having lost and reached after setting degree
Executing agency, so as to be advanced by the response time that atmospheric pressure lost compensation gas is injected into Industrial Stoves body of heater.
Further, if starting the preceding i.e. control executing agency of default Industrial Stoves operation operation to Industrial Stoves body of heater
Interior injection atmospheric pressure lost compensation gas, then set flow to control on the furnace gas transfer passage between Industrial Stoves and dust arrester
Device, when controlling executing agency to inject atmospheric pressure lost compensation gas into Industrial Stoves body of heater, passes through the volume control device
By the stability of flow in the furnace gas transfer passage between Industrial Stoves and dust arrester in the range of setting.
Air pressure injects into Industrial Stoves body of heater in i.e. control executing agency before default Industrial Stoves operation operation is started
Air pressure in body of heater is frequently can lead to during compensating for loss and damage gas to raise, but it is defeated by the furnace gas between Industrial Stoves and dust arrester
Send sets volume control device to maintain the throughput into dust arrester in the case of air pressure is elevated in body of heater on passage
Stablize relatively, it is ensured that the stabilization of dust arrester, normal operation.
In order to realize object defined above, there is provided a kind of industry of the application above method according to another aspect of the present invention
Kiln flue gas cleaning system.The system includes the dust arrester and blower fan for being used to be connected with Industrial Stoves, and the blower fan will be from institute
The furnace gas for stating the discharge of Industrial Stoves exhaust outlet is driven to dust arrester progress dust separation processing, the Industrial Stoves flue gas cleaning system
System also includes being used to be connected with the Industrial Stoves, can inject atmospheric pressure lost into the Industrial Stoves body of heater based on control
Compensation gas and stop injecting the execution machine changed between atmospheric pressure lost compensation gas two states into the Industrial Stoves body of heater
Structure.
As a kind of embodiment of above-mentioned Industrial Stoves flue gas cleaning system, the exhaust outlets of the Industrial Stoves according to
Secondary connection dust arrester and blower fan, the exhaust outlet connection flow dividing structure of blower fan, one of shunting output end of the flow dividing structure
Connected and be provided with the atmospheric pressure lost compensation gas air inlet on Industrial Stoves, the return duct by controller by return duct
The control valve being controlled, the controller is connected with the baroceptor signal in Industrial Stoves, and the controller is used to work as gas
Order control valve is opened, when baroceptor detected value is more than or equal to when pressure sensor detected value is less than or equal to first threshold
Order control valve is closed during the Second Threshold of one >=first threshold.
Further, the dust arrester is temperature gas dust remover so that the conduct gas of dust arrester discharge
Crushing loses reduction amplitude of the temperature compared to the furnace gas temperature that Industrial Stoves exhaust outlet is discharged of the gas of dedusting of compensation gas
Within 300 DEG C, 250 DEG C, 200 DEG C, 150 DEG C or 100 DEG C.
In above-mentioned Industrial Stoves flue gas cleaning system, the dust arrester can be the smoke filtration using filter element
Device.In above-mentioned Industrial Stoves flue gas cleaning system, the Industrial Stoves, which are specifically as follows, needs intermittent discharge product or clinker
Industrial Stoves, such as electric furnace or converter.In addition, in above-mentioned Industrial Stoves flue gas cleaning system, being filled in Industrial Stoves and dedusting
Volume control device can also be set on furnace gas transfer passage between putting.
The above-mentioned Industrial Stoves control method of the present invention and the Industrial Stoves flue gas cleaning system of application this method can be fitted
When the atmospheric pressure lost by controlling executing agency to inject to can ensure that Industrial Stoves safe operation into Industrial Stoves body of heater compensate
Gas, can effectively solve the problem that air pressure decline causes to cause safety in Industrial Stoves extraneous air infiltration body of heater in Industrial Stoves body of heater
The problem of hidden danger, while can also reduce influence of the air pressure decline to the normal operation of dust arrester in Industrial Stoves body of heater.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partly will become apparent from the description below, or pass through the practice of the present invention
Solve.
Brief description of the drawings
Constitute the part of the present invention accompanying drawing be used for aiding in content provided in the understanding of the present invention, accompanying drawing and its
Explanation relevant in the present invention can be used for explaining the present invention, but not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of one embodiment of the Industrial Stoves flue gas cleaning system of the present invention.
Fig. 2 is the schematic flow sheet of one embodiment of the Industrial Stoves control method of the present invention.
Fig. 3 is the schematic flow sheet of one embodiment of the Industrial Stoves control method of the present invention.
Embodiment
Clear, complete explanation is carried out to the present invention below in conjunction with the accompanying drawings.Those of ordinary skill in the art are based on these
It is possible to realize the present invention in the case of explanation.Before with reference to accompanying drawing, the present invention will be described, it is necessary to it is emphasized that：
In the technical scheme and technical characteristic provided in each several part including the description below in the present invention, do not rushing
In the case of prominent, these technical schemes and technical characteristic can be mutually combined.
In addition, the embodiments of the invention being related in the description below are generally only the embodiment of a branch of the invention, and
The embodiment being not all of.Therefore, based on the embodiment in the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained on the premise of work, should all belong to the scope of protection of the invention.
On term in the present invention and unit.Term in description and claims of this specification and relevant part
" comprising " and its any deformation, it is intended that covering is non-exclusive to be included.
As shown in figure 1, the Industrial Stoves flue gas cleaning system of the embodiment of the present invention, including for connecting with Industrial Stoves 100
The dust arrester 210 and blower fan 220 connect, the stove that the blower fan 220 will can be discharged from the exhaust outlet 113 of the Industrial Stoves 100
Gas drive is moved to dust arrester 210 and carries out dust separation processing.
In the above-described embodiments, the furnace gas exhaust outlet 113 of Industrial Stoves 100 is sequentially connected dust arrester 210 and blower fan
220, i.e. blower fan 220 are arranged at after dust arrester 210.In other examples, blower fan 220 can also be arranged on industry kiln
Between stove 100 and dust arrester 210.
Industrial Stoves 100 are specially the electric furnace 110 of steel-making.As shown in figure 1, the electric furnace 110 has tapping hole 111 and gone out
Intermittence is discharged into molten steel and clinker from tapping hole 111 and slag notch 112 in cinder notch 112, the running of electric furnace 110.Obviously,
The applicable Industrial Stoves 100 of the present invention are not limited to this electric furnace 110.But, present invention is particularly suitable for need intermittent discharge
The Industrial Stoves 100 of product or clinker.
In order to ensure the dust removing effects of furnace gas discharged to Industrial Stoves 100, in the above-described embodiments, dust arrester 210
For a kind of smoke filter of use filter element.Also, in view of the dedusting gas that will be discharged using the smoke filter
As the atmospheric pressure lost compensation gas for being back to Industrial Stoves 100, and atmospheric pressure lost compensation gas is being back to Industrial Stoves 100
When its temperature preferably with Industrial Stoves 100 temperature approach, otherwise may increase the operation energy consumption of Industrial Stoves 100, therefore
The temperature of the gas of dedusting of smoke filter discharge is unsuitable too low, therefore, and the dust arrester 210 is specifically removed from high-temperature gas
Dirt device.
Metal filtering core or pottery should be used generally, as the filter element of the smoke filter of temperature gas dust remover
Porcelain filter core.In the above-described embodiments, the filter element of smoke filter, which is specifically employed, is researched and developed by applicant of the present invention, manufactured
The filter element product that trade name with sale is " YT rigid films " or trade name is " YT flexible membranes ".
" YT rigid films " compares " YT flexible membranes " more resistant to high temperature, but cost is also higher.If filter element is using " YT rigidity
Film ", then the temperature of the gas of dedusting as atmospheric pressure lost compensation gas of smoke filter discharge is compared to Industrial Stoves 100
The fall of the furnace gas temperature of exhaust outlet discharge can be controlled within 150 DEG C, and the dustiness in dedusting gas is controllable
System is in 10mg/Nm3Below.
If filter element uses " YT flexible membranes ", having removed as atmospheric pressure lost compensation gas of smoke filter discharge
The temperature of dust and gas body can be controlled on 250 DEG C of left sides compared to the fall for the furnace gas temperature that the exhaust outlet of Industrial Stoves 100 is discharged
The right side, the dustiness in dedusting gas also can be controlled in 10mg/Nm3Below.
In the Industrial Stoves flue gas cleaning system of above-described embodiment, the exhaust outlet of the blower fan 220, which also has, is connected with shunting
Structure, the atmospheric pressure lost that one of shunting output end of the flow dividing structure is connected by return duct on Industrial Stoves 100 is compensated
The control valve 230 being controlled by controller, the controller and industry kiln are installed on gas inlet, the return duct
The signal of baroceptor 250 connection in stove 100.
Wherein, the flow dividing structure specifically can be using a T-shaped three-way pipeline, one end connecting fan of the three-way pipeline
220 exhaust outlet, one end connect the air inlet of return duct, and last one end is used to connecting after Industrial Stoves flue gas cleaning system
Furnace gas receiving and processing equipment, such as using the waste heat boiler of furnace gas heat.
Atmospheric pressure lost compensation gas air inlet on Industrial Stoves 100 can be arranged on any suitable on Industrial Stoves 100
Position, its act on be by atmospheric pressure lost compensation gas import Industrial Stoves 100 body of heater in.The embodiment specifically damages air pressure
The sidepiece that compensation gas air inlet has been arranged on the exhaust outlet 113 of Industrial Stoves 100 is lost, so as to make full use of Industrial Stoves 100
On the opening that natively has.
Baroceptor 250 is prior art.The controller being connected with the signal of baroceptor 250 is according to baroceptor
The keying of the detected value control control valve 230 of 250 baroceptor 250 (to reach more precise control effect, can also be controlled
Any opening degree of control valve 230 processed) control technology be also existing, and specific control mode need to only be set on the controller
Corresponding control condition.
Fig. 2 is the stream of the Industrial Stoves control method of the Industrial Stoves flue gas cleaning system operation present invention of above-described embodiment
Journey schematic diagram.As shown in Fig. 2 this method is to comprise the following steps：
Step S11, that is, detect air pressure in body of heater.Specifically refer to, the stove of Industrial Stoves 100 is detected by baroceptor 250
Internal air pressure, and detection signal is sent to controller.
Step S12, that is, judge whether≤first threshold.Specifically refer to, controller is according to the baroceptor 250 received
Detection signal judge whether the air pressure in the body of heater of Industrial Stoves 100 is reached below first threshold, if so, then showing Industrial Stoves
Atmospheric pressure lost, which has reached, in 100 bodies of heater imposes a condition；If it is not, then showing that atmospheric pressure lost does not reach in the body of heater of Industrial Stoves 100
To imposing a condition, continue to detect air pressure in body of heater.
Step S13, i.e. order control valve 230 are opened.Specifically refer to, when judging atmospheric pressure lost in the body of heater of Industrial Stoves 100
Reach after imposing a condition, control order control valve 230 is opened, at this moment, the dedusting of the smoke filter discharge
The air pressure that a gas part enters on Industrial Stoves 100 from a shunting output end of flow dividing structure through return duct, control valve 230
Compensating for loss and damage gas inlet, so as to compensate the air pressure of the body of heater internal loss of Industrial Stoves 100.
Step S14, that is, detect air pressure in body of heater.Specifically refer to, the stove of Industrial Stoves 100 is detected by baroceptor 250
Internal air pressure, and detection signal is sent to controller.
Step S15, that is, judge whether >=Second Threshold.Specifically refer to, controller is according to the baroceptor 250 received
Detection signal judge whether the air pressure in the body of heater of Industrial Stoves 100 reaches more than Second Threshold, if so, then showing Industrial Stoves
Atmospheric pressure lost has been controlled in 100 bodies of heater；If it is not, then showing that atmospheric pressure lost is not yet controlled in the body of heater of Industrial Stoves 100
System, continues to detect air pressure in body of heater under conditions of the unlatching of control valve 230.
Step S16, i.e. order control valve 230 are closed.Specifically refer to, when judging in the bright body of heater of Industrial Stoves 100 that air pressure damages
Mistake has been obtained after control, and control order control valve 230 is closed, at this moment, the dedusting gas of the smoke filter discharge
The furnace gas receiving and processing equipment after Industrial Stoves flue gas cleaning system will all be guided into by flow dividing structure.
It is pointed out that first threshold and the specific setting value of Second Threshold should be determined as the case may be, it is general and
Speech, first threshold can be set as Industrial Stoves 100 normally operation when its body of heater in air pressure 50%-80% (preferably 60%,
70%), Second Threshold can be set as the 90%-130% of air pressure in its body of heater when Industrial Stoves 100 are normally run (preferably
100%th, 110%).
In above-described embodiment, because Industrial Stoves 100 are specially the electric furnace 110 of steel-making, and the running of electric furnace 110
It is middle intermittence is discharged into molten steel and clinker from tapping hole 111 and slag notch 112, and in the discharge molten steel or clinker of intermittence
In operating process, the room that can be formed with the discharge of molten steel or clinker in body of heater causes the air pressure in body of heater rapidly to drop
It is low, it is easily caused in the infiltration body of heater of the air outside Industrial Stoves and causes potential safety hazard, this phenomenon is the spy of the electric furnace 110
Point.Decline that is, inevitably resulting in air pressure in body of heater when the discharge molten steel or clinker of the intermittence of electric furnace 110, therefore,
When control method shown in Fig. 2 can at least be triggered at the discharge molten steel or clinker of the intermittence of electric furnace 110.
The Industrial Stoves flue gas cleaning system of another embodiment of the present invention is net in the Industrial Stoves furnace gas of previous embodiment
On the basis of change system, flow control dress is additionally arranged on the furnace gas transfer passage between Industrial Stoves 100 and dust arrester 210
Put 240.Volume control device 240 specifically employs existing flow control valve；In addition, the Industrial Stoves furnace gas of the embodiment is net
Change system also improves the Industrial Stoves control method of operation on the basis of previous embodiment.
During due to the intermittent discharge molten steel of electric furnace 110 or clinker the situation that air pressure declines rapidly in body of heater can be caused to be known
, and previous embodiment is used after controller is judged according to the detection signal of the baroceptor 250 received
The mode that order control valve 230 is opened again can not in advance be responded using known situation, thus in body of heater air pressure drop
As little as body of heater air pressure causes a undesirable delay between recovering.
In order to solve the above problems, the response time of atmospheric pressure lost compensation gas is injected into Industrial Stoves body of heater in advance,
The Industrial Stoves flue gas cleaning system of another embodiment of the present invention is first by the behaviour of the intermittent discharge molten steel of electric furnace 110 and clinker
It is preset as can result in atmospheric pressure lost in Industrial Stoves body of heater respectively and reaches that the Industrial Stoves operation imposed a condition is operated, and
Start before default Industrial Stoves operation operation, that is, control executing agency to inject atmospheric pressure lost benefit into the body of heater of Industrial Stoves 100
Repay gas.
Fig. 3 is the Industrial Stoves control of the Industrial Stoves flue gas cleaning system operation present invention of another embodiment of the present invention
The schematic flow sheet of method processed.As shown in figure 3, this method is to comprise the following steps：
Step S21, i.e. predetermined registration operation.Specifically refer to, the operation difference of the intermittent discharge molten steel of electric furnace 110 and clinker is pre-
It is set to can result in atmospheric pressure lost in Industrial Stoves body of heater and reaches the Industrial Stoves operation operation imposed a condition.
Step S22, that is, judge whether that predetermined registration operation will be started.Specifically refer to, judge whether electric furnace 110 will carry out discharge steel
Liquid and clinker operation.
Step S23, i.e. order control valve 230 are opened.Specifically refer to, when judging that electric furnace 110 will carry out discharge molten steel and stove
After slag operation, control order control valve 230 is opened, at this moment, the gas of the dedusting part of smoke filter discharge from
The atmospheric pressure lost compensation gas air inlet that one shunting output end of flow dividing structure enters on electric furnace 110 through return duct, control valve 230
Mouthful, so as to compensate the air pressure that will be lost in the body of heater of electric furnace 110.
Step S24a, that is, detect air pressure in body of heater.Specifically refer to, detected by baroceptor 250 in the body of heater of electric furnace 110
Air pressure, and will detection signal send to controller.
Step S24b (is performed) side by side with step S24a, that is, starts flow control.Specifically refer to, start volume control device
240 to stablize furnace gas flow, it is to avoid draws because causing air pressure to raise into atmospheric pressure lost compensation gas in advance in the body of heater of electric furnace 110
The upward fluctuating range of furnace lifting throughput is exceeded.
Step S25, that is, judge whether the >=the three threshold value.Specifically refer to, controller is according to the baroceptor 250 received
Detection signal judge whether the air pressure in the body of heater of electric furnace 110 reaches more than 3rd threshold value, if so, then showing the body of heater of electric furnace 110
Interior air pressure is too high, will perform step S26a；If it is not, then performing step S26b.
Step S26a, i.e. order control valve 230 are closed.Specifically refer to, air pressure is too high in judge in the bright body of heater of electric furnace 110
Or atmospheric pressure lost controlled after (judged by step S27), control order control valve 230 is closed, at this moment, the cigarette
The gas of dedusting of air filter discharge is by the furnace gas after all guiding Industrial Stoves flue gas cleaning system into by flow dividing structure
Receiving and processing equipment.
Step S26b, that is, judge whether predetermined registration operation completes.Specifically refer to, judge electric furnace 110 carry out discharge molten steel and
Whether clinker operation completes, if so, then performing step S27；If it is not, then return to step S24a.
Step S27, that is, judge whether >=Second Threshold.Specifically refer to, controller is according to the baroceptor 250 received
Detection signal judge whether the air pressure in the body of heater of electric furnace 110 reaches more than Second Threshold, if so, then showing the body of heater of electric furnace 110
Interior atmospheric pressure lost has been controlled, and should perform step S26a；If it is not, then showing that atmospheric pressure lost is not yet obtained in the body of heater of electric furnace 110
To control, continue to detect air pressure in body of heater under conditions of the unlatching of control valve 230, that is, answer return to step S24a.
It is pointed out that the specific setting value of Second Threshold and the 3rd threshold value should be determined as the case may be, it is general and
Speech, Second Threshold can be set as Industrial Stoves 100 normally operation when its body of heater in air pressure 90%-130% (preferably 100%,
110%), the 3rd threshold value can be set as the 150%-200% of air pressure in its body of heater when Industrial Stoves 100 are normally run.
It can result in atmospheric pressure lost in Industrial Stoves body of heater due to having preset and reach that impose a condition Industrial Stoves run behaviour
Make, before default Industrial Stoves operation operation is started (or simultaneously) it is that gas injects into Industrial Stoves body of heater in control executing agency
Crushing loses compensation gas, is controlled again after setting degree without waiting detecting air pressure in Industrial Stoves body of heater and having lost and reached
Executing agency processed, so as to be advanced by the response time that atmospheric pressure lost compensation gas is injected into Industrial Stoves body of heater.
The relevant content to the present invention is illustrated above.Those of ordinary skill in the art are in the feelings illustrated based on these
It is possible to realize the present invention under condition.Based on the above of the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained on the premise of work, should all belong to the scope of protection of the invention.
Claims (10)
1. Industrial Stoves control method, comprises the following steps：
A, when judging in Industrial Stoves body of heater that atmospheric pressure lost reaches or will reach that control executing agency is to industry after imposing a condition
Injection atmospheric pressure lost compensation gas in kiln body of heater；
B, after judging that Industrial Stoves body of heater atmospheric pressure lost obtains control, control executing agency stop into the Industrial Stoves body of heater
Inject atmospheric pressure lost compensation gas；
Wherein, the atmospheric pressure lost compensation gas is a kind of gas for being able to ensure that Industrial Stoves safe operation；In addition
The furnace gas that the step a and step b occur in the Industrial Stoves is continuously discharged and driven to dust arrester and carried out
During dust separation is handled.
2. the method as described in claim 1, it is characterised in that：The atmospheric pressure lost compensation gas derives from the dust arrester
The dedusting gas of discharge.
3. method as claimed in claim 2, it is characterised in that：The dust arrester is for temperature gas dust remover so that institute
The temperature for stating the gas of dedusting as atmospheric pressure lost compensation gas of dust arrester discharge is arranged compared to Industrial Stoves exhaust outlet
The fall of the furnace gas temperature gone out is within 300 DEG C, 250 DEG C, 200 DEG C, 150 DEG C or 100 DEG C.
4. method as claimed in claim 2 or claim 3, it is characterised in that：The furnace gas exhaust outlet of the Industrial Stoves, which is sequentially connected, to be removed
Dirt device and blower fan, the exhaust outlet connection flow dividing structure of blower fan, one of shunting output end of the flow dividing structure pass through backflow
It is provided with and is controlled by controller on atmospheric pressure lost compensation gas air inlet on pipe connection Industrial Stoves, the return duct
Control valve, the controller is connected with the baroceptor signal in Industrial Stoves, be less than when baroceptor detected value or
During equal to first threshold, control order control valve is opened, when baroceptor detected value is more than or equal to Second Threshold, control
Device order control valve processed is closed, wherein, the first threshold≤Second Threshold.
5. the method as described in any one claim in claims 1 to 3, it is characterised in that：The atmospheric pressure lost compensation
Gas is inert gas or nitrogen.
6. the method as described in any one claim in claims 1 to 3, it is characterised in that：The Industrial Stoves are to need
Want the Industrial Stoves of intermittent discharge product or clinker；Then the step a is at least triggered at Industrial Stoves discharge or will arranged
When putting product or clinker.
7. method as claimed in claim 6, it is characterised in that：The Industrial Stoves are electric furnace or converter.
8. the method as described in any one claim in claims 1 to 3, it is characterised in that：At least one can be led
Cause atmospheric pressure lost in Industrial Stoves body of heater to reach that the Industrial Stoves imposed a condition operation operation is preset, start default work
Before the operation operation of industry kiln or while default Industrial Stoves operation operation is started, that is, executing agency is controlled to Industrial Stoves
Injection atmospheric pressure lost compensation gas in body of heater.
9. method as claimed in claim 8, it is characterised in that：If being controlled before default Industrial Stoves operation operation is started
Executing agency injects atmospheric pressure lost compensation gas into Industrial Stoves body of heater, then the furnace gas between Industrial Stoves and dust arrester
Volume control device is set on transfer passage, and when control, executing agency injects atmospheric pressure lost compensation gas into Industrial Stoves body of heater
When, by the volume control device by the stability of flow in the furnace gas transfer passage between Industrial Stoves and dust arrester in setting
In the range of.
10. applied to the Industrial Stoves flue gas cleaning system of claim 1 methods described, including for being connected with Industrial Stoves
The furnace gas discharged from the Industrial Stoves exhaust outlet is driven to dust arrester and carries out dedusting by dust arrester and blower fan, the blower fan
Purified treatment, it is characterised in that：Also include being used for be connected with the Industrial Stoves, can be based on control so as to the Industrial Stoves
Atmospheric pressure lost compensation gas is injected in body of heater and stops injecting atmospheric pressure lost two kinds of shapes of compensation gas into the Industrial Stoves body of heater
The executing agency changed between state；Above-mentioned Industrial Stoves flue gas cleaning system can also be improved to：The exhaust of the Industrial Stoves
Mouth is sequentially connected dust arrester and blower fan, and the exhaust outlet connection flow dividing structure of blower fan, one of shunting of the flow dividing structure is defeated
Go out on the atmospheric pressure lost compensation gas air inlet held and connected by return duct on Industrial Stoves, the return duct and be provided with by control
The control valve that device processed is controlled, the controller is connected with the baroceptor signal in Industrial Stoves, and the controller is used for
When baroceptor detected value is less than or equal to first threshold order control valve open, when baroceptor detected value is more than or
Equal to one >=first threshold Second Threshold when order control valve close；Above-mentioned Industrial Stoves flue gas cleaning system can also change
Enter for：The dust arrester be temperature gas dust remover so that the dust arrester discharge be used as atmospheric pressure lost compensation gas
The temperature of the gas of dedusting of body compared to the furnace gas temperature that Industrial Stoves exhaust outlet is discharged reduction amplitude 300 DEG C, 250
DEG C, 200 DEG C, within 150 DEG C or 100 DEG C；Above-mentioned Industrial Stoves flue gas cleaning system can also be improved to：The dust arrester is
Using the smoke filter of filter element；Above-mentioned Industrial Stoves flue gas cleaning system can also be improved to：The Industrial Stoves are
Need the Industrial Stoves of intermittent discharge product or clinker；Above-mentioned Industrial Stoves flue gas cleaning system can also be improved to：It is described
Industrial Stoves are electric furnace or converter；Above-mentioned Industrial Stoves flue gas cleaning system can also be improved to：Filled in Industrial Stoves and dedusting
Volume control device is set on furnace gas transfer passage between putting.
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| CN201710545395.7A CN107328248B (en) | 2017-07-06 | 2017-07-06 | Industrial kiln control method and industrial kiln gas purification system applying same |
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| CN201710545395.7A CN107328248B (en) | 2017-07-06 | 2017-07-06 | Industrial kiln control method and industrial kiln gas purification system applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149023A (en) * | 2017-12-29 | 2018-06-12 | 焱鑫环保科技有限公司 | It is a kind of to prevent from fuming furnace from suddenly having a power failure slag is caused to return the method that stifled wind nozzle causes blowing out accident |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712899A1 (en) * | 1977-03-24 | 1978-09-28 | Baum Verfahrenstechnik | Controlling combustion of reaction gases leaving steel converter - by reducing gap between converter and gas collection hood when carbon mon:oxide evolution increase, using movable ring duct |
| CN201311197Y (en) * | 2008-11-05 | 2009-09-16 | 锦州航星真空设备有限公司 | Hydrogen gas sintering furnace gas circuit automatic control system |
| CN101539369A (en) * | 2009-04-23 | 2009-09-23 | 上海宝钢工程技术有限公司 | Flue gas waste heat recovery and negative energy consumption dust-removal system for electric stove |
| CN101628201A (en) * | 2009-08-19 | 2010-01-20 | 福建龙净脱硫脱硝工程有限公司 | Clearing device for smoke pollutants of glass kiln and clearing method thereof |
| CN102382689A (en) * | 2011-08-09 | 2012-03-21 | 中国天辰工程有限公司 | Positive-pressure dry dust removing and purifying method for calcium carbide furnace gas |
| CN202494351U (en) * | 2012-03-23 | 2012-10-17 | 西安电炉研究所有限公司 | Detection and regulation system of ore-smelting electric furnace furnace-chamber pressure |
| CN102888488A (en) * | 2012-10-17 | 2013-01-23 | 中冶南方工程技术有限公司 | Control method of draught fan for dry dust removal of converter gas |
| CN203096094U (en) * | 2013-03-11 | 2013-07-31 | 青岛钢铁控股集团有限责任公司 | Blast furnace top pressure safety control system |
| CN203657491U (en) * | 2013-11-25 | 2014-06-18 | 洛阳安拓窑炉环保有限公司 | Pressure compensating device of kiln |
| CN104862469A (en) * | 2015-05-09 | 2015-08-26 | 慈溪市瑞天机械设备有限公司 | Pressure control system and method |
| CN204694055U (en) * | 2015-03-26 | 2015-10-07 | 河南昱千鑫金属科技有限公司 | Nitrogen atmosphere protection pushed slab kiln automatic kiln pressure control system |
| JP2016074941A (en) * | 2014-10-06 | 2016-05-12 | 株式会社神戸製鋼所 | Method for operating bypass valve in furnace top pressure power generation equipment of blast furnace |
| CN105605929A (en) * | 2015-12-16 | 2016-05-25 | 合肥恒力电子装备公司 | Precise micropressure control and comprehensive waste gas processing device suitable for atmosphere kiln |
| CN106679438A (en) * | 2017-01-13 | 2017-05-17 | 成都易态科技有限公司 | Lime kiln high-temperature waste gas recycling system |
| CN207123180U (en) * | 2017-07-06 | 2018-03-20 | 成都易态科技有限公司 | Industrial Stoves flue gas cleaning system |
-
2017
- 2017-07-06 CN CN201710545395.7A patent/CN107328248B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712899A1 (en) * | 1977-03-24 | 1978-09-28 | Baum Verfahrenstechnik | Controlling combustion of reaction gases leaving steel converter - by reducing gap between converter and gas collection hood when carbon mon:oxide evolution increase, using movable ring duct |
| CN201311197Y (en) * | 2008-11-05 | 2009-09-16 | 锦州航星真空设备有限公司 | Hydrogen gas sintering furnace gas circuit automatic control system |
| CN101539369A (en) * | 2009-04-23 | 2009-09-23 | 上海宝钢工程技术有限公司 | Flue gas waste heat recovery and negative energy consumption dust-removal system for electric stove |
| CN101628201A (en) * | 2009-08-19 | 2010-01-20 | 福建龙净脱硫脱硝工程有限公司 | Clearing device for smoke pollutants of glass kiln and clearing method thereof |
| CN102382689A (en) * | 2011-08-09 | 2012-03-21 | 中国天辰工程有限公司 | Positive-pressure dry dust removing and purifying method for calcium carbide furnace gas |
| CN202494351U (en) * | 2012-03-23 | 2012-10-17 | 西安电炉研究所有限公司 | Detection and regulation system of ore-smelting electric furnace furnace-chamber pressure |
| CN102888488A (en) * | 2012-10-17 | 2013-01-23 | 中冶南方工程技术有限公司 | Control method of draught fan for dry dust removal of converter gas |
| CN203096094U (en) * | 2013-03-11 | 2013-07-31 | 青岛钢铁控股集团有限责任公司 | Blast furnace top pressure safety control system |
| CN203657491U (en) * | 2013-11-25 | 2014-06-18 | 洛阳安拓窑炉环保有限公司 | Pressure compensating device of kiln |
| JP2016074941A (en) * | 2014-10-06 | 2016-05-12 | 株式会社神戸製鋼所 | Method for operating bypass valve in furnace top pressure power generation equipment of blast furnace |
| CN204694055U (en) * | 2015-03-26 | 2015-10-07 | 河南昱千鑫金属科技有限公司 | Nitrogen atmosphere protection pushed slab kiln automatic kiln pressure control system |
| CN104862469A (en) * | 2015-05-09 | 2015-08-26 | 慈溪市瑞天机械设备有限公司 | Pressure control system and method |
| CN105605929A (en) * | 2015-12-16 | 2016-05-25 | 合肥恒力电子装备公司 | Precise micropressure control and comprehensive waste gas processing device suitable for atmosphere kiln |
| CN106679438A (en) * | 2017-01-13 | 2017-05-17 | 成都易态科技有限公司 | Lime kiln high-temperature waste gas recycling system |
| CN207123180U (en) * | 2017-07-06 | 2018-03-20 | 成都易态科技有限公司 | Industrial Stoves flue gas cleaning system |
Non-Patent Citations (1)
| Title |
|---|
| 侯君;张继军;: "空气助燃窑炉换向期间压力补偿方案设计", no. 01, pages 58 - 60 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149023A (en) * | 2017-12-29 | 2018-06-12 | 焱鑫环保科技有限公司 | It is a kind of to prevent from fuming furnace from suddenly having a power failure slag is caused to return the method that stifled wind nozzle causes blowing out accident |
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| CN107328248B (en) | 2023-12-08 |
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