CN108120290A - A kind of combustion gas blowing device and combustion gas blowing method - Google Patents
A kind of combustion gas blowing device and combustion gas blowing method Download PDFInfo
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- CN108120290A CN108120290A CN201710208835.XA CN201710208835A CN108120290A CN 108120290 A CN108120290 A CN 108120290A CN 201710208835 A CN201710208835 A CN 201710208835A CN 108120290 A CN108120290 A CN 108120290A
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- Prior art keywords
- combustion gas
- gas injection
- steam
- branch pipe
- blowing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
Abstract
A kind of combustion gas blowing device, the device includes sintering pallet, seal closure, combustion gas blowing device, combustion gas blowing device includes combustion gas and is blown manifold, combustion gas is blown branch pipe, combustion gas injection tube is arranged, sintering pallet is located in seal closure, combustion gas injection manifold is arranged on the outside of seal closure, combustion gas injection tube arranges the top for being arranged on sintering pallet, and combustion gas injection tube is ranked in seal closure, combustion gas injection branch pipe one end connection combustion gas injection manifold connects combustion gas injection tube row with the other end, combustion gas injection tube row includes more combustion gas injection tubes, combustion gas injection tube is equipped with combustion gas injection hole；Combustion gas injection branch pipe is equipped with gas flow monitoring device.The combustion gas blowing device is also equipped with steam blowing equipment, by detecting the stopping state of combustion gas injection hole in real time, in the event of block, can by blowing steam in time, Rapid Cleaning combustion gas injection hole.
Description
Technical field
It is more particularly to a kind of that there is steam the present invention relates to a kind of sintering machine combustion gas blowing device and its combustion gas blowing method
The sintering machine combustion gas blowing device and its sintering process of blow device, belong to sintering art.
Background technology
Sintering process is the key link smelted iron in flow, and principle is by various powdery iron-containing raw materials, and supplying is fitted
The fuel and flux of amount, add in suitable water, through mixing and making material that a series of physical occur on agglomerating plant after pelletizing
Variation is learned, sintering is blocking, and the next step is carried out so as to be sent to blast furnace.
In order to reduce the coke ratio of blast furnace ironmaking and smelting cost, requirement of the blast furnace to sinter is often that high intensity and height are gone back
Originality.In sintering circuit, generally require sinter that there is higher intensity, high finished product rate, the relatively low rate of return mine and relatively low
Fuel consumption.The sinter of high intensity and high reproducibility consumes less coke in blast furnace ironmaking process, so as to reduce dioxy
Change the discharge of carbon.In the long run consider, carbon dioxide discharge-reduction is required one of bottleneck as restriction development of iron ＆ steel industry.According to
Related data introduction, sintering account for the 60% of industrial discharge total amount with blast furnace process CO2 emissions.Therefore, no matter from enterprise
Industry reduces cost consideration and still considers from environmental protection angle, reduces sintering solid fuel this consumption ratio with reducing blast furnace burden
Fuel ratio becomes the urgent need of ironmaking technology.
Under this overall situation, " the sintering charge level gaseous fuel injection technology " of Japanese JFE companies exploitation comes into being, former
Reason be by the way that injection is diluted to gaseous fuel below combustible concentration lower limit above the sintering charge level of a distance after ignition furnace,
Make its combustion heat supplying in sinter bed, so as to reduce the solid carbon dosage and CO in sinter production2Discharge capacity.Meanwhile
Since the burning of gaseous fuel broadens high temperature bandwidth of the sinter bed in production, so that 1200~1400 DEG C of burning
Knot ore deposit temperature-time is extended, so that the intensity of sinter and 5~10mm porositys are effectively strengthened.It sees at present
Carry out the technology with preferable energy-saving and emission-reduction upgrading effect.
Blowing device structure under the prior art：Blowing device is by injection manifold, injection branch pipe, injection tube row, gas injection
Aperture blowing, blow and side seals form.It is wherein blown manifold one end with plant area gas pipeline to be connected, the other end passes through injection
Branch pipe and injection tube row are connected, and injection tube ranking is in blow, and positioned at sintering pallet top.Combustion gas production when, from
Plant area's gas pipeline enter injection manifold after enter back into injection branch pipe, finally enter injection tube arrange and pass through be arranged on pipe arrange on
Combustion gas injection hole spray, in blow with air mixed diluting, formed design requirement concentration mixed gases, into sintering
Assisted sintering inside the bed of material, side seals can effectively ensure that combustion gas will not be excessive outer to covering with mixed gases in cover.
Combustion gas blowing device under the prior art blocks removing or cleaning means due to lacking effective spray orifice, is given birth to for a long time
Spray orifice is easily often blocked by tar in production, so as to trigger problems with：
1. injection is uneven：In production, after tar plugs gas jet orifice, if could not effectively be removed,
The hole there is no combustion gas ejection, which results in part without gas situation that other local combustion gas spray volumes increase, serious shadow
The uniformity of injection is rung, and then significant negative impact is brought to the effect of combustion gas injection assisted sintering；
2. safety coefficient reduces：Since tar plugs gas jet orifice, other local location combustion gas spray volumes can be caused to increase
It is more, and combustion gas its each location point injection amount before the bed of material is sprayed into be have passed through calculating (just with air mixed diluting in cover
To design concentration).Increasing for local location gas quantity can cause the position gas concentration value to steeply rise, once concentration value reaches
The lower limiting value of gas explosion scope, then it is very possible to trigger explosion, cause serious production accident；
3rd, spray orifice blocks, and cleaning is extremely difficult.Since sintering machine is constantly run, and sintering machine internal temperature is higher by (one
As be 400-600 DEG C), if injection hole plug, it is necessary to sintering machine is out of service, with the sinter in whole device and device
After cooling, injection hole could be cleaned, this certainly will influence the operation of sintering machine；Meanwhile if sintering machine is out of service, can influence
The running of entire process, equipment will also be affected including cooler etc.；In addition, if injection hole plug, stops sintering suddenly
The operation of machine will influence the sintering of sinter in sintering machine, reduce product quality.
The content of the invention
The defects of for the prior art, we have been subject to it Optimal improvements, power on existing blowing device architecture basics
Figure develops one kind can quickly find combustion gas injection hole stopping state, and the combustion gas effectively removed at the first time in production
The blockage problem of injection hole, while corresponding flow feedback formula control method is developed, in the hope of making up the prior art
Loophole achievees the purpose that make whole production line stable yields, natural labor.A kind of combustion gas blowing device of the present invention can realize real-time detection
The stopping state of combustion gas injection hole, in the event of block, can in time, Rapid Cleaning combustion gas injection hole.
The first embodiment provided according to the present invention provides a kind of combustion gas blowing device.Especially providing has
The combustion gas blowing device of steam blowing equipment.
A kind of combustion gas blowing device, the device include sintering pallet, seal closure (or making blow), combustion gas injection dress
It puts.Combustion gas blowing device includes combustion gas injection manifold, combustion gas injection branch pipe, combustion gas injection tube row.Sintering pallet is located at sealing
In cover.Combustion gas injection manifold is arranged on the outside of seal closure.Combustion gas injection tube arranges the top for being arranged on sintering pallet, and fires
Gas blowout blowpipe is ranked in seal closure.Combustion gas injection branch pipe one end connection combustion gas injection manifold connects combustion gas injection tube with the other end
Row.Combustion gas injection tube row includes more combustion gas injection tubes.Combustion gas injection tube is equipped with combustion gas injection hole.It is set on combustion gas injection branch pipe
There is gas flow monitoring device.
Gas flow monitoring device is set on combustion gas injection branch pipe, the gas flow on branch pipe is monitored in real time, works as tar
When plugging gas jet orifice causes the gas flow to change, gas flow monitoring device can be detected rapidly.
In the present invention, combustion gas blowing device further includes steam blowing equipment.That is, the present invention, which provides, has steam blowing dress
The combustion gas blowing device put.Steam blowing equipment includes main steam range, steam branch pipe, steam blowing pipe row.Main steam range is set
In the outside of seal closure.Steam blowing pipe arranges the top for being arranged on sintering pallet, and steam blowing pipe row is arranged on sintering
Between machine trolley and combustion gas injection tube row.One end connection main steam range of steam branch pipe connects steam blowing pipe row with the other end.
Steam blowing pipe row includes more steam blowing pipes.Steam blowing pipe is equipped with (multiple) steam purge hole.
In the present invention, the opening direction of combustion gas injection hole is towards sintering pallet, the opening direction court of steam purge hole
It is arranged to combustion gas injection tube.
Steam blowing equipment is arranged on the top of sintering pallet, and steam blowing pipe row be arranged on sintering pallet with
Between combustion gas injection tube row, when combustion gas injection tube row is worked well, steam blowing equipment is not run, and when tar plugs combustion
Gas spurt, causes part without gas and other local combustion gas spray volumes increase, and when seriously affecting the uniformity of injection, starts steam
Blow device, high-temperature steam are sprayed from the more steam blowing pipes that steam blowing pipe is arranged, and can effectively remove the gas injection of blocking
The substances such as the tar in hole.When the opening direction of combustion gas injection hole is towards sintering pallet, and the opening direction of steam purge hole
When being arranged towards combustion gas injection tube, steam blowing it is more efficient, steam is also avoided directly to blow to sintering pallet charge level and causes shadow
It rings.
Preferably, combustion gas injection manifold and main steam range are separately positioned on the both sides of sintering pallet.
In the present invention, it is equipped with a steam blowing pipe immediately below each combustion gas injection tube.
Preferably, a steam purge hole on steam blowing pipe corresponds to the one or more of top combustion gas injection tube
(steam that i.e. a steam purge hole ejects can be purged to one or more of combustions to (such as 2 or 3) combustion gas injection hole
Gas blowout aperture blowing)；It is further preferred that the quantity of combustion gas injection hole under the direction of combustion gas injection tube with immediately below combustion gas injection tube
Steam blowing pipe direction on steam purge hole quantity it is equal or be substantially identical and each combustion gas injection hole with
A corresponding steam purge hole for lower section steam blowing pipe is in alignment with each other or aligns that (i.e. a steam purge hole ejects one by one
Steam can be purged to a corresponding combustion gas injection hole).
As optimal scheme, each steam purge hole on steam blowing pipe, with each in combustion gas injection tube
The position of combustion gas injection hole is corresponding, and steam purge hole is located at the underface of corresponding combustion gas injection hole.Height can be allowed by so setting
Warm steam directly, rapidly removes the substances such as the tar in combustion gas injection hole, the quick blockage problem for solving combustion gas injection hole, contracting
The short combustion gas caused by combustion gas injection hole blocks is blown the irregular influence time to sintering process, makes entire sintering process stable
It completes.
Preferably, the gas flow monitoring device is flow-through orifice.
Flow-through orifice, also referred to as orifice flowmeter, by standard orifice plate and multi-parameter differential pressure transmitter (or differential pressure transmitter,
Temperature transmitter and pressure transmitter) mating ratio of components differential flow device, measurable gas, steam, the flow of liquid, structure
Simply, easy to maintenance, performance is stablized.
Preferably, the steam branch pipe is equipped with jet chimney valve.
By being turned on and off jet chimney valve, control steam flows into or does not flow into steam branch pipe.When needing steam pair
When combustion gas injection hole is purged, jet chimney valve is opened；After purging, steam off pipeline valve.
In the present invention, combustion gas injection tube is blown casing for the combustion gas of 2 sections or 2 sections above (such as 3 or 4 sections).Gas injection
Blow the structure that casing uses telescopic tube.
Each section of preferably combustion gas injection casing is equipped with combustion gas injection hole.Combustion gas injection with combustion gas injection hole
Outer (straight) footpath of pipe or combustion gas injection casing is usually 30-200mm, preferably 35-190mm, preferably 40-170mm, preferably 50-
150mm, more preferable 80-110mm, more preferable 89-108mm.
Outer (straight) footpath of steam blowing pipe with steam purge hole is usually 20-150mm, preferably 30-130mm, preferably
35-110mm, preferably 40-90mm, more preferable 45-70mm, more preferable 50 or 60mm.
The distance between combustion gas injection tube or combustion gas injection casing and steam blowing pipe (refer to：Distance or vertical in-between
The distance in direction) it is usually 30-200mm, preferably 32-190mm, preferably 35-170mm, preferably 40-150mm, more preferable 45-
120mm, more preferable 50 or 60 or 70 or 80mm.
In the present invention, combustion gas injection manifold is equipped with the combustion gas of 1-10 roots and is blown branch pipe, is preferably 2-8 roots combustion gas injection branch
Pipe, each combustion gas are blown on branch pipe and are equipped with gas flow monitoring device.
Preferably, the quantity of steam branch pipe is identical with the quantity of combustion gas injection branch pipe.
In the present invention, every combustion gas injection tube row is equipped with or connects 2-50 root combustion gas injection tubes, is preferably 3-20 roots
Combustion gas injection tube.
In the present invention, every combustion gas injection tube is equipped with 2-100 combustion gas injection hole, is preferably 3-50 combustion gas injection
Hole.
In the present invention, combustion gas blowing device further includes control system.Control system is connected with gas flow monitoring device
And control jet chimney valve.
Control system is connected with both gas flow monitoring device, jet chimney valve, obtains gas flow monitoring in real time
The monitoring data of device.When the monitoring data of gas flow monitoring device are more than the threshold value of setting, control system automatically turns on
Jet chimney valve, steam flow into steam branch pipe, are sprayed from the steam purge hole of steam steam scavenging conduit, be purged to gas injection
In aperture blowing, the substance of the blockings such as tar is understood.By control system automatic running manual operation can be not required, not in whole process
Shut down, without cooling in the case of, understand the substance blocked on combustion gas injection hole rapidly, ensure the normal of entire sintering circuit
Operating, avoids having an impact the sintering of sinter in sintering machine, ensures the stabilization of product quality.Provided according to the present invention
Two kinds of embodiments provide a kind of combustion gas blowing method.
A kind of combustion gas blowing method or the combustion gas blowing method using above-mentioned combustion gas blowing device, this method include following step
Suddenly：
1) whole device brings into operation, setting variation can control value k, detect the combustion gas on each combustion gas injection branch pipe respectively
Combustion gas stream magnitude W on flow monitoring device, n-th combustion gas are blown the gas flow in the gas flow monitoring device on branch pipe
Value is calculated as Wn；
2) the combustion gas stream magnitude W ' in the gas flow monitoring device on each combustion gas injection branch pipe is monitored in real time respectively,
The real-time combustion gas stream magnitude in gas flow monitoring device on n-th combustion gas injection branch pipe is calculated as Wn’；
3) control system calculates the gas flow change rate δ in each combustion gas injection branch pipe, n-th combustion gas injection respectively
Gas flow change rate on branch pipe is
4) the gas flow change rate δ being respectively compared on each combustion gas injection branch pipenWith the size of k values：
If δnLess than k values, illustrate that the combustion gas injection hole in the combustion gas injection tube of n-th combustion gas injection branch pipe connection blocks
Situation is controllable, continues to run with, and gas flow monitoring device continues to monitor；
If δnEqual to or more than k values, illustrate the combustion gas injection in the combustion gas injection tube of n-th combustion gas injection branch pipe connection
Hole plug is serious, opens the jet chimney valve on steam branch pipe corresponding with combustion gas injection branch pipe by control system, steams
Vapour is blown out from steam purge hole, and steam enters combustion gas injection hole, is dredged combustion gas injection hole, is continued to run with；
Wherein：N is the integer of 1-10, is preferably the integer of 2-8.
In the above method, the k values are 0.1-0.5, are preferably 0.2-0.4, more preferably 0.25-0.35.
In the above method, control system opens jet chimney valve and the jet chimney valve is closed after 2-20 minutes, preferably
The jet chimney valve is closed after 3-10 minutes, more preferably closes the jet chimney valve after 4-8 minutes.
The opening and closing of jet chimney are controlled by control system, the data monitored in real time according to gas flow monitoring device
Difference, open jet chimney valve, introduce steam purged.Gas flow is equipped with when each combustion gas is blown on branch pipe
When being equipped with jet chimney valve in monitoring device, the steam branch pipe, control system can be respectively compared each combustion gas injection
Gas flow change rate δ on branch pipenWith the size of k values, selection is opened on steam branch pipe corresponding with combustion gas injection branch pipe
Jet chimney valve, realize precisely purging, it is rapid solve to block while, reduce influence of the steam to sintering.
When being produced using the present invention, since the blocking of combustion gas injection hole can be detected and be had at the first time
Effect is removed, therefore there is no situation of the local location without gas, the more gas of local location, so as to effectively prevent being blown unevenness because of combustion gas
Product quality caused by even declines, because local location combustion gas excessively causes the situation for reaching explosion ratio lower limit initiation security incident
Occur.
In conclusion this technology is compared with prior art, serious forgiveness higher, upgrading effect are more preferable, safety coefficient higher, and do not have
There is increase excessive cost.It is contemplated that it has great potential in future market.
Description of the drawings
Fig. 1 is a kind of structure diagram of combustion gas blowing device of the present invention；
Fig. 2 is a kind of overlooking structure figure of combustion gas blowing device of the present invention；
Fig. 3 is the structure diagram that combustion gas injection tube of the present invention is 3 gas fuel savings injection casing；
Fig. 4 is control system schematic diagram of the present invention；
Fig. 5 is a kind of flow chart of combustion gas blowing method of the present invention.
Reference numeral：1：Sintering pallet；2：Seal closure；3：Combustion gas blowing device；301：Combustion gas is blown manifold；302：Combustion
Branch pipe is blown in gas blowout；303：Combustion gas injection tube is arranged；304：Combustion gas injection tube；305：Combustion gas injection hole；306：(Multi-section retractable) fires
Casing is blown in gas blowout；4：Gas flow monitoring device；5：Steam blowing equipment；501：Main steam range；502：Steam branch pipe；503：It steams
Vapour scavenging conduit is arranged；504：Steam blowing pipe；505：Steam purge hole；6：Jet chimney valve；7：Control system.
Specific embodiment
The first embodiment provided according to the present invention provides a kind of combustion gas blowing device.
A kind of combustion gas blowing device, the device include sintering pallet 1, seal closure 2, combustion gas blowing device 3.Combustion gas is blown
Device 3 includes combustion gas injection manifold 301, combustion gas injection branch pipe 302, combustion gas injection tube row 303.Sintering pallet 1 is located at sealing
In cover 2.Combustion gas injection manifold 301 is arranged on the outside of seal closure 2.Combustion gas injection tube row 303 is arranged on the upper of sintering pallet 1
Side, and combustion gas injection tube row 303 is located in seal closure 2.302 one end of combustion gas injection branch pipe connection combustion gas injection 301 Hes of manifold
Other end connection combustion gas injection tube row 303.Combustion gas injection tube row 303 includes more combustion gas injection tubes 304.Combustion gas injection tube 304
It is equipped with combustion gas injection hole 305.Combustion gas injection branch pipe 302 is equipped with gas flow monitoring device 4.
Preferably, which further includes steam blowing equipment 5.That is, the present invention, which provides, has steam blowing dress
Put 5 combustion gas blowing device.Steam blowing equipment 5 includes main steam range 501, steam branch pipe 502, steam blowing pipe row 503.It steams
Vapour manifold 501 is arranged on the outside of seal closure 2.Steam blowing pipe row 503 is arranged on the top of sintering pallet 1, and steam
Scavenging conduit row 503 is arranged between sintering pallet 1 and combustion gas injection tube row 303.One end connection steam of steam branch pipe 502 is total
Pipe 501 connects steam blowing pipe row 503 with the other end.Steam blowing pipe row 503 includes more steam blowing pipes 504.Steam is blown
Pipe 504 is swept equipped with (multiple) steam purge hole 505.
In the present invention, the opening direction of combustion gas injection hole 305 is towards sintering pallet 1.The opening of steam purge hole 505
303 are arranged towards combustion gas injection tube in direction.
Preferably, combustion gas injection manifold 301 and main steam range 501 are separately positioned on the both sides of sintering pallet 1.
In the present invention, the underface of each combustion gas injection tube 304 is equipped with a steam blowing pipe 504.
Preferably, a steam purge hole 505 corresponds to the one of top combustion gas injection tube 304 on steam blowing pipe 504
(steam that i.e. a steam purge hole 505 ejects can be purged to institute to a or multiple (such as 2 or 3) combustion gas injection hole 305
State one or more combustion gas injection holes 305)；It is further preferred that combustion gas injection hole 305 under the direction of combustion gas injection tube 304
Quantity it is equal with the quantity of the steam purge hole 505 in the direction of the steam blowing pipe 504 immediately below combustion gas injection tube 304 or
Be substantially identical and each combustion gas injection hole 305 steam purge hole 505 corresponding to lower section steam blowing pipe 504 that
(steam that i.e. a steam purge hole 505 ejects can be purged to a corresponding combustion gas injection hole for this alignment
305)。
In the present invention, the gas flow monitoring device 4 is flow-through orifice.
Preferably, the steam branch pipe 502 is equipped with jet chimney valve 6.
In the present invention, combustion gas injection tube 304 is blown casing 306 for combustion gas more than 2 sections or 2 sections.Combustion gas is blown casing
306 use the structure of telescopic tube.
Each section of preferably combustion gas injection casing 306 is equipped with combustion gas injection hole 305.
In the present invention, combustion gas injection manifold 301 is equipped with the combustion gas of 1-10 roots and is blown branch pipe 302, is preferably 2-8 root combustion gas
Branch pipe 302 is blown, gas flow monitoring device 4 is equipped on each combustion gas injection branch pipe 302.
Preferably, the quantity of steam branch pipe 502 is identical with the quantity of combustion gas injection branch pipe 302.
In the present invention, every combustion gas injection tube row 303 is equipped with or connects 2-50 root combustion gas injection tube 304, is preferably
3-20 root combustion gas injection tube 304.
In the present invention, every combustion gas injection tube 304 is equipped with 2-100 combustion gas injection hole 305, is preferably 3-50 combustion
Gas blowout aperture blowing 305.
Preferably, which further includes control system 7.Control system 7 is connected and controls with gas flow monitoring device 4
Jet chimney valve 6.
Outer (straight) footpath with the combustion gas injection tube 304 of combustion gas injection hole 305 or combustion gas injection casing 306 is usually 30-
200mm, preferably 35-190mm, preferably 40-170mm, preferably 50-150mm, more preferable 80-110mm, more preferable 89-108mm.
Outer (straight) footpath of steam blowing pipe 504 with steam purge hole 505 is usually 20-150mm, preferably 30-
130mm, preferably 35-110mm, preferably 40-90mm, more preferable 45-70mm, more preferable 50 or 60mm.
The distance between combustion gas injection tube 304 or combustion gas injection casing 306 and steam blowing pipe 504 (refer to：In-between away from
From or vertical direction with a distance from) be usually 30-200mm, preferably 32-190mm, preferably 35-170mm, preferably 40-150mm are more excellent
Select 45-120mm, more preferable 50 or 60 or 70 or 80mm.
Second of the embodiment provided according to the present invention provides a kind of combustion gas blowing method.
A kind of a kind of combustion gas blowing method (or, combustion gas injection and cleaning method), this method comprises the following steps：
1) whole device brings into operation, setting variation can control value k, detect respectively on each combustion gas injection branch pipe 302
Combustion gas stream magnitude W in gas flow monitoring device 4, n-th combustion gas are blown in the gas flow monitoring device 4 on branch pipe 302
Combustion gas stream magnitude be calculated as Wn；
2) gas flow in the gas flow monitoring device 4 on each combustion gas injection branch pipe 302 is monitored in real time respectively
Value W ', the real-time combustion gas stream magnitude in gas flow monitoring device 4 that n-th combustion gas is blown on branch pipe 302 are calculated as Wn’；
3) control system 7 calculates the gas flow change rate δ in each combustion gas injection branch pipe 302, n-th combustion gas respectively
Injection branch pipe 302 on gas flow change rate be
4) the gas flow change rate δ being respectively compared on each combustion gas injection branch pipe 302nWith the size of k values：
If δnLess than k values, illustrate the combustion gas injection in the combustion gas injection tube 304 that n-th combustion gas injection branch pipe 302 connects
305 stopping state of hole is controllable, continues to run with, and gas flow monitoring device 4 continues to monitor；
If δnEqual to or more than k values, illustrate the combustion in the combustion gas injection tube 304 that n-th combustion gas injection branch pipe 302 connects
Gas blowout aperture blowing 305 blocks seriously, is opened by control system 7 and is blown with the combustion gas on 302 corresponding steam branch pipe 502 of branch pipe
Jet chimney valve 6, steam are blown out from steam purge hole 505, and steam enters combustion gas injection hole 305, dredge combustion gas injection hole
305, it continues to run with；
Wherein：N is the integer of 1-10, is preferably the integer of 2-8.
In the present invention, the k values are 0.1-0.5, are preferably 0.2-0.4, more preferably 0.25-0.35.
Control system 7 opens jet chimney valve and closes the jet chimney valve 6 after 62-20 minutes, preferably 3-10 minutes
After close the jet chimney valve 6, more preferably close the jet chimney valve 6 after 4-8 minutes.
Embodiment 1
According to Fig. 1-5, a kind of combustion gas blowing device, the device includes sintering pallet 1, seal closure 2, combustion gas injection
Device 3, combustion gas blowing device 3 include combustion gas injection manifold 301, combustion gas injection branch pipe 302, combustion gas injection tube row 303, sintering machine
Trolley 1 is located in seal closure 2, and combustion gas injection manifold 301 is arranged on the outside of seal closure 2, and combustion gas injection tube row 303 is arranged on burning
The top of machine trolley 1 is tied, and combustion gas injection tube row 303 is located in seal closure 2, the connection combustion gas of 302 one end of combustion gas injection branch pipe
Injection manifold 301 connects combustion gas injection tube row 303 with the other end, and combustion gas injection tube row 303 includes more combustion gas injection tubes 304,
Combustion gas injection tube 304 is equipped with combustion gas injection hole 305；Combustion gas injection branch pipe 302 is equipped with gas flow monitoring device 4.Combustion gas
Flow monitoring device 4 is flow-through orifice.
Steam blowing equipment 5 is further included, steam blowing equipment 5 includes main steam range 501, steam branch pipe 502, steam blowing
Pipe row 503, main steam range 501 are arranged on the outside of seal closure 2, and steam blowing pipe row 503 is arranged on the upper of sintering pallet 1
Side, and steam blowing pipe row 503 is arranged between sintering pallet 1 and combustion gas injection tube row 303, the one of steam branch pipe 502
End connection main steam range 501 connects steam blowing pipe row 503 with the other end, and steam blowing pipe row 503 includes more steam blowings
Pipe 504, steam blowing pipe 504 are equipped with steam purge hole 505.Steam branch pipe 502 is equipped with jet chimney valve 6.
Combustion gas is blown manifold 301 and main steam range 501 is separately positioned on the both sides of sintering pallet 1.Combustion gas injection hole 305
Opening direction towards sintering pallet 1, the opening direction of steam purge hole 505 is towards combustion gas injection tube row 303.Each combustion
The underface of gas blowout blowpipe 304 is equipped with a steam blowing pipe 504.A steam purge hole 505 is right on steam blowing pipe 504
(steam that i.e. a steam purge hole 505 ejects can be blown 2 combustion gas injection holes 305 of combustion gas injection tube 304 above Ying Yu
Sweep to 2 combustion gas injection holes 305).
Combustion gas injection tube 304 is blown casing 306 for combustion gas more than 2 sections or 2 sections, and combustion gas injection casing 306 is using flexible
The structure of formula casing.Each section of combustion gas injection casing 306 is equipped with combustion gas injection hole 305.
Combustion gas injection manifold 301 is equipped with 3 combustion gas and is blown branch pipe 302, is equipped on each combustion gas injection branch pipe 302
Gas flow monitoring device 4.The quantity of steam branch pipe 502 is identical with the quantity of combustion gas injection branch pipe 302.
Every combustion gas injection tube row 303 is equipped with or connects 3 combustion gas injection tubes 304.It is set in every combustion gas injection tube 304
There are 5 combustion gas injection holes 305.
Combustion gas blowing device further includes control system 7, and control system 7 is connected with gas flow monitoring device 4 and controls steaming
Vapour pipeline valve 6.
A kind of combustion gas blowing method or the combustion gas blowing method using above-mentioned combustion gas blowing device, this method include following step
Suddenly：
1) whole device brings into operation, setting variation can control value k, detect respectively on each combustion gas injection branch pipe 302
Combustion gas stream magnitude W in gas flow monitoring device 4, n-th combustion gas are blown in the gas flow monitoring device 4 on branch pipe 302
Combustion gas stream magnitude be calculated as Wn；
2) gas flow in the gas flow monitoring device 4 on each combustion gas injection branch pipe 302 is monitored in real time respectively
Value W ', the real-time combustion gas stream magnitude in gas flow monitoring device 4 that n-th combustion gas is blown on branch pipe 302 are calculated as Wn’；
3) control system 7 calculates the gas flow change rate δ in each combustion gas injection branch pipe 302, n-th combustion gas respectively
Injection branch pipe 302 on gas flow change rate be
4) the gas flow change rate δ being respectively compared on each combustion gas injection branch pipe 302nWith the size of k values：
If δnLess than k values, illustrate the combustion gas injection in the combustion gas injection tube 304 that n-th combustion gas injection branch pipe 302 connects
305 stopping state of hole is controllable, continues to run with, and gas flow monitoring device 4 continues to monitor；
If δnEqual to or more than k values, illustrate the combustion in the combustion gas injection tube 304 that n-th combustion gas injection branch pipe 302 connects
Gas blowout aperture blowing 305 blocks seriously, is opened by control system 7 and is blown with the combustion gas on 302 corresponding steam branch pipe 502 of branch pipe
Jet chimney valve 6, steam are blown out from steam purge hole 505, and steam enters combustion gas injection hole 305, dredge combustion gas injection hole
305, it continues to run with；
Wherein：N is 3.
In the above method, the k values are 0.25.
In the above method, control system 7 opens jet chimney valve and the jet chimney valve 6 is closed after 64 minutes.
In the present embodiment, since the blocking of combustion gas injection hole can be detected at the first time and effectively be removed, therefore
There is no situation of the local location without gas, the more gas of local location, so as to effectively prevent caused by combustion gas injection is uneven
Product quality declines, because local location combustion gas excessively causes to reach happening for explosion ratio lower limit initiation security incident.
Embodiment 2
According to Fig. 1-2, Fig. 4-5, a kind of combustion gas blowing device, including sintering pallet 1, seal closure 2, combustion gas injection
Device 3, combustion gas blowing device 3 include combustion gas injection manifold 301, combustion gas injection branch pipe 302, combustion gas injection tube row 303, sintering machine
Trolley 1 is located in seal closure 2, and combustion gas injection manifold 301 is arranged on the outside of seal closure 2, and combustion gas injection tube row 303 is arranged on burning
The top of machine trolley 1 is tied, and combustion gas injection tube row 303 is located in seal closure 2, the connection combustion gas of 302 one end of combustion gas injection branch pipe
Injection manifold 301 connects combustion gas injection tube row 303 with the other end, and combustion gas injection tube row 303 includes more combustion gas injection tubes 304,
Combustion gas injection tube 304 is equipped with combustion gas injection hole 305；Combustion gas injection branch pipe 302 is equipped with gas flow monitoring device 4.It is described
Gas flow monitoring device 4 is flow-through orifice.
Steam blowing equipment 5 is further included, steam blowing equipment 5 includes main steam range 501, steam branch pipe 502, steam blowing
Pipe row 503, main steam range 501 are arranged on the outside of seal closure 2, and steam blowing pipe row 503 is arranged on the upper of sintering pallet 1
Side, and steam blowing pipe row 503 is arranged between sintering pallet 1 and combustion gas injection tube row 303, the one of steam branch pipe 502
End connection main steam range 501 connects steam blowing pipe row 503 with the other end, and steam blowing pipe row 503 includes more steam blowings
Pipe 504, steam blowing pipe 504 are equipped with steam purge hole 505.Steam branch pipe 502 is equipped with jet chimney valve 6.
Combustion gas is blown manifold 301 and main steam range 501 is separately positioned on the both sides of sintering pallet 1.Combustion gas injection hole 305
Opening direction towards sintering pallet 1, the opening direction of steam purge hole 505 is towards combustion gas injection tube row 303.Each combustion
The underface of gas blowout blowpipe 304 is equipped with a steam blowing pipe 504.Combustion gas injection hole under the direction of combustion gas injection tube 304
The quantity of 305 quantity and the steam purge hole 505 in the direction of the steam blowing pipe 504 immediately below combustion gas injection tube 304
Equal and each combustion gas injection hole 305 steam purge hole 505 corresponding to lower section steam blowing pipe 504 is in alignment with each other
(steam that i.e. a steam purge hole 505 ejects can be purged to a corresponding combustion gas injection hole 305).
Combustion gas injection manifold 301 is equipped with 8 combustion gas and is blown branch pipe 302, is equipped on each combustion gas injection branch pipe 302
Gas flow monitoring device 4.The quantity of steam branch pipe 502 is identical with the quantity of combustion gas injection branch pipe 302.Every combustion gas injection tube
Row 303 is equipped with or connects 20 combustion gas injection tubes 304.Every combustion gas injection tube 304 is equipped with 50 combustion gas injection holes 305.
Combustion gas blowing device further includes control system 7, and control system 7 is connected with gas flow monitoring device 4 and controls steaming
Vapour pipeline valve 6.
A kind of combustion gas blowing method or the combustion gas blowing method using above-mentioned combustion gas blowing device, this method include following step
Suddenly：
1) whole device brings into operation, setting variation can control value k, detect respectively on each combustion gas injection branch pipe 302
Combustion gas stream magnitude W in gas flow monitoring device 4, n-th combustion gas are blown in the gas flow monitoring device 4 on branch pipe 302
Combustion gas stream magnitude be calculated as Wn；
2) gas flow in the gas flow monitoring device 4 on each combustion gas injection branch pipe 302 is monitored in real time respectively
Value W ', the real-time combustion gas stream magnitude in gas flow monitoring device 4 that n-th combustion gas is blown on branch pipe 302 are calculated as Wn’；
3) control system 7 calculates the gas flow change rate δ in each combustion gas injection branch pipe 302, n-th combustion gas respectively
Injection branch pipe 302 on gas flow change rate be
4) the gas flow change rate δ being respectively compared on each combustion gas injection branch pipe 302nWith the size of k values：
If δnLess than k values, illustrate the combustion gas injection in the combustion gas injection tube 304 that n-th combustion gas injection branch pipe 302 connects
305 stopping state of hole is controllable, continues to run with, and gas flow monitoring device 4 continues to monitor；
If δnEqual to or more than k values, illustrate the combustion in the combustion gas injection tube 304 that n-th combustion gas injection branch pipe 302 connects
Gas blowout aperture blowing 305 blocks seriously, is opened by control system 7 and is blown with the combustion gas on 302 corresponding steam branch pipe 502 of branch pipe
Jet chimney valve 6, steam are blown out from steam purge hole 505, and steam enters combustion gas injection hole 305, dredge combustion gas injection hole
305, it continues to run with；
Wherein：N is 8.
In the above method, the k values are 0.35.
In the above method, control system 7 opens jet chimney valve and the jet chimney valve 6 is closed after 68 minutes.
In the present embodiment, since the blocking of combustion gas injection hole can be detected at the first time and effectively be removed, therefore
There is no situation of the local location without gas, the more gas of local location, so as to effectively prevent caused by combustion gas injection is uneven
Product quality declines, because local location combustion gas excessively causes to reach happening for explosion ratio lower limit initiation security incident.
Claims (10)
1. a kind of combustion gas blowing device, which includes sintering pallet (1), seal closure (2), combustion gas blowing device (3), combustion gas
Blowing device (3) includes combustion gas injection manifold (301), combustion gas injection branch pipe (302), combustion gas injection tube row (303), is sintered board
Vehicle (1) is located in seal closure (2), and combustion gas injection manifold (301) is arranged on the outside of seal closure (2), combustion gas injection tube row (303)
The top of sintering pallet (1) is arranged on, and combustion gas injection tube row (303) is located in seal closure (2), combustion gas injection branch pipe
(302) one end connection combustion gas injection manifold (301) connects combustion gas injection tube row (303), combustion gas injection tube row (303) with the other end
Including more combustion gas injection tubes (304), combustion gas injection tube (304) is equipped with combustion gas injection hole (305)；It is characterized in that：Combustion gas
It is blown branch pipe (302) and is equipped with gas flow monitoring device (4).
2. combustion gas blowing device according to claim 1, it is characterised in that：The device further includes steam blowing equipment (5),
Steam blowing equipment (5) includes main steam range (501), steam branch pipe (502), steam blowing pipe row (503), main steam range
(501) outside of seal closure (2) is arranged on, steam blowing pipe row (503) is arranged on the top of sintering pallet (1), and steams
Vapour scavenging conduit row (503) is arranged between sintering pallet (1) and combustion gas injection tube row (303), one end of steam branch pipe (502)
Connection main steam range (501) connects steam blowing pipe row (503) with the other end, and steam blowing pipe row (503) includes more steam
Scavenging conduit (504), steam blowing pipe (504) are equipped with steam purge hole (505).
3. combustion gas blowing device according to claim 2, it is characterised in that：The opening direction court of combustion gas injection hole (305)
To sintering pallet (1), the opening direction of steam purge hole (505) arranges (303) towards combustion gas injection tube；And/or
Combustion gas injection manifold (301) and main steam range (501) are separately positioned on the both sides of sintering pallet (1).
4. the combustion gas blowing device according to Claims 2 or 3, it is characterised in that：Each combustion gas injection tube (304) is just
Lower section is equipped with a steam blowing pipe (504)；Preferably, the upper steam purge hole (505) of steam blowing pipe (504) is right
One or more combustion gas injection holes (305) of combustion gas injection tube (304) above Ying Yu；It is further preferred that combustion gas injection tube (304)
Direction under the quantity of combustion gas injection hole (305) and the court of steam blowing pipe (504) immediately below combustion gas injection tube (304)
The quantity of upward steam purge hole (505) is equal or is substantially identical and each combustion gas injection hole (305) and lower section phase
A steam purge hole (505) is answered to be in alignment with each other, and (steam that i.e. a steam purge hole (505) is ejected can be purged to described
A corresponding combustion gas injection hole (305)).
5. the combustion gas blowing device according to any one of claim 2-4, it is characterised in that：The gas flow monitoring dress
(4) are put as flow-through orifice；And/or
The steam branch pipe (502) is equipped with jet chimney valve (6).
6. the combustion gas blowing device according to any one of claim 2-5, it is characterised in that：Combustion gas injection tube (304) is 2
Combustion gas injection casing (306) more than section or 2 sections, combustion gas injection casing (306) use the structure of telescopic tube；Preferably
Each section of combustion gas injection casing (306) is equipped with combustion gas injection hole (305)；And/or
Combustion gas injection manifold (301) is equipped with 1-10 roots combustion gas injection branch pipe (302), is preferably 2-8 roots combustion gas injection branch pipe
(302), it is equipped with gas flow monitoring device (4) on each combustion gas injection branch pipe (302)；Preferably, steam branch pipe
(502) quantity is identical with the quantity of combustion gas injection branch pipe (302).
7. the combustion gas blowing device according to any one of claim 2-6, it is characterised in that：Every combustion gas injection tube row
(303) 2-50 root combustion gas injection tubes (304) are equipped with or connected, are preferably 3-20 root combustion gas injection tubes (304)；And/or
Every combustion gas injection tube (304) is equipped with 2-100 combustion gas injection hole (305), is preferably 3-50 combustion gas injection hole
(305)。
8. the combustion gas blowing device according to any one of claim 1-7, it is characterised in that：The device further includes control system
It unites (7), control system (7) is connected with gas flow monitoring device (4) and controls jet chimney valve (6).
9. a kind of a kind of combustion gas injection of combustion gas blowing device any one of combustion gas blowing method or usage right requirement 1-8
Method, this method comprise the following steps：
1) whole device brings into operation, setting variation can control value k, detect the combustion on each combustion gas injection branch pipe (302) respectively
Combustion gas stream magnitude W in throughput monitoring device (4), n-th combustion gas are blown the gas flow monitoring device on branch pipe (302)
(4) the combustion gas stream magnitude on is calculated as Wn；
2) gas flow in the gas flow monitoring device (4) on each combustion gas injection branch pipe (302) is monitored in real time respectively
Value W ', the real-time combustion gas stream magnitude in gas flow monitoring device (4) that n-th combustion gas is blown on branch pipe (302) are calculated as Wn’；
3) control system (7) calculates the gas flow change rate δ in each combustion gas injection branch pipe (302), n-th combustion gas respectively
Gas flow change rate in injection branch pipe (302) is
4) the gas flow change rate δ being respectively compared on each combustion gas injection branch pipe (302)nWith the size of k values：
If δnLess than k values, illustrate the combustion gas injection in the combustion gas injection tube (304) that n-th combustion gas injection branch pipe (302) connects
Hole (305) stopping state is controllable, continues to run with, and gas flow monitoring device (4) continues to monitor；
If δnEqual to or more than k values, illustrate the combustion in the combustion gas injection tube (304) that n-th combustion gas injection branch pipe (302) connects
Gas blowout aperture blowing (305) blocks seriously, passes through control system (7) and opens steam branch pipe corresponding with combustion gas injection branch pipe (302)
(502) the jet chimney valve (6) on, steam are blown out from steam purge hole (505), and steam enters combustion gas injection hole (305), are dredged
Logical combustion gas injection hole (305), continues to run with；
Wherein：N is the integer of 1-10, is preferably the integer of 2-8.
10. according to the method described in claim 9, it is characterized in that：The k values are 0.1-0.5, are preferably 0.2-0.4, more excellent
Elect 0.25-0.35 as；And/or
Control system (7) opens jet chimney valve (6) and the jet chimney valve (6) is closed after 2-20 minutes, and preferably 3-10 divides
The jet chimney valve (6) is closed after clock, more preferably closes the jet chimney valve (6) after 4-8 minutes.
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| CN113969344A (en) * | 2020-07-23 | 2022-01-25 | 中冶长天国际工程有限责任公司 | Proportioning method of gas-steam coupling injection process of sintering machine |
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