CN107270729A - A kind of industrial production flue gas cool-down subtracts dirt waste-heat recovery device and recovery method - Google Patents
A kind of industrial production flue gas cool-down subtracts dirt waste-heat recovery device and recovery method Download PDFInfo
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- CN107270729A CN107270729A CN201710605634.3A CN201710605634A CN107270729A CN 107270729 A CN107270729 A CN 107270729A CN 201710605634 A CN201710605634 A CN 201710605634A CN 107270729 A CN107270729 A CN 107270729A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 239000003546 flue gas Substances 0.000 title claims abstract description 175
- 238000011084 recovery Methods 0.000 title claims abstract description 70
- 239000002918 waste heat Substances 0.000 title claims abstract description 55
- 238000009776 industrial production Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 136
- 239000007789 gas Substances 0.000 claims abstract description 67
- 239000000428 dust Substances 0.000 claims abstract description 47
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000003500 flue dust Substances 0.000 claims abstract description 26
- 230000005484 gravity Effects 0.000 claims description 8
- 238000000151 deposition Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000009467 reduction Effects 0.000 abstract description 11
- 239000003517 fume Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 21
- 230000008569 process Effects 0.000 description 10
- 238000010410 dusting Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement 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
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chimneys And Flues (AREA)
Abstract
Subtract dirt waste-heat recovery device and recovery method the invention discloses a kind of industrial production flue gas cool-down, belong to each production system fume treatment technical field before blast furnace ironmaking.The present invention includes air conducting mechanism, for cooling to whole device；In the inside of air conducting mechanism, and it is in the flue gas cool-down mechanism of cavity loop nested structure with air conducting mechanism, bulky grain flue dust is due to temperature reduction, and density becomes big, drops in the bottom of flue gas cool-down mechanism；And the heat-exchanger rig being fixed on inside the air delivery line at the top of air conducting mechanism, the heat that air conducting mechanism is exchanged heat absorbed by heat-exchanger rig；The external ash-laden gas ingress pipe for passing air conducting mechanism of flue gas cool-down mechanism and subtract cloud of dust gas delivery line.The present invention can reach ash-laden gas cooling, the recovery of dust-laden particles fall, the purpose of heat recovery and utilization, produce fluctuation without the technique to whole system furthermore, it is possible to cut down and convert cold blast sliding valve, the product quality of production is stable.
Description
Technical field
The present invention relates to each production system fume treatment technical field before blast furnace ironmaking, more particularly to a kind of industry are big raw
Production flue gas cool-down subtracts dirt waste-heat recovery device and recovery method.
Background technology
In modernization industry production, can all there are a large amount of flue gases to produce, 350 DEG C of the maximum smoke temperature that industrial production is produced~
500 DEG C, a large amount of dust, and CO, the SO remained are contained simultaneously2Deng pernicious gas, air is discharged into after generally carrying out dust recovery
In.
Because ash-laden gas temperature is higher, gathered dust usually using electric dust collector, its effect is very undesirable, it is difficult to reach
To discharging standards 100mg/m3, generally all in 80~200mg/m3, larger abrasion is carried out to main air blower equipment belt.
Simultaneously in order to ensure that flue gas enters existing general dust removal, it is required for design and installation to convert cold blast sliding valve reduction flue gas
Temperature, not only increases the treating capacity of gas cleaning, because blast wandering is increased, the fluctuation for being also easy to cause to produce main technique and
The produced product quality of influence, while also increasing the energy consumption of main air blower.
Bag-type dust retracting device can realize 50mg/m3Discharge below, but the characteristic requirements flue-gas temperature of cloth bag is stable
Less than 150 DEG C of holding, it is most preferable below 100 DEG C.Therefore the requirement of the cooling pretreatment of ash-laden gas, is increasingly highlighted.
Through retrieval, Chinese patent application, publication number：CN104004879B, publication date：2016.08.10, one kind is disclosed
Flue gas low-temperature section waste heat recovery apparatus of converter, including adiabatic flue, adiabatic flue one end is connected to converter gasification cooling cigarette
Road, the other end one section of evaporator of connection, one section of connection atomization cooling Venturi tube of evaporator, atomization cooling Venturi tube connection evaporator
Two sections, two sections of connection economizers of evaporator, economizer connection inertia force dust arrester；Hot water in economizer enters evaporator one
After two sections of section and evaporator, saturated steam is produced by its internal flue gas with heat；Set in atomization cooling Venturi tube
There are double medium spray guns.The invention further relates to the exhaust heat recovering method of flue gas low-temperature section waste heat recovery apparatus of converter.Flue gas with
The atomized drop that double medium spray guns inside the atomization cooling Venturi tube spray is exchanged heat, and the flue-gas temperature after heat exchange is in
In the range of 580 DEG C -600 DEG C, so as to effectively contain the localized clusters of carbon monoxide in flue gas, it is to avoid occur to dodge quick-fried danger
Danger so that the equipment uses safer.But profit of the invention by one section of evaporator, two sections of evaporator to strengthen fume afterheat
With, and diameter processing is carried out to flue dust with spray gun and can not be recycled, that is, water source is wasted, new pollution sources are generated again.
The content of the invention
1. the invention technical problem to be solved
For in the processing procedure of ash-laden gas in the prior art, efficiency of dust collection is low, cooling-down effect is not obvious, installs and converts cold
Air-valve easily causes the problem of whole production technology is fluctuated, and subtracting dirt waste heat the invention provides a kind of industrial production flue gas cool-down returns
Receiving apparatus and recovery method.It is relatively isolated to flue gas cool-down by cooling mechanism and air guide mechanism, and passes through natural weight
Power dedusting, has reached the purpose of the whole stable processing technique of guarantee.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of industrial production flue gas cool-down subtracts dirt waste-heat recovery device, including：Air conducting mechanism, for whole device
Cooled；In the inside of the air conducting mechanism, and with air conducting mechanism be in cavity loop nested structure flue gas cool-down
Mechanism, bulky grain flue dust is due to temperature reduction, and density becomes big, drops in the bottom of flue gas cool-down mechanism, reaches that the first step subtracts dirt
Effect；And the heat-exchanger rig being fixed on inside the air delivery line at the top of the air conducting mechanism, by air conducting machine
The heat of structure heat exchange is absorbed by heat-exchanger rig, reaches the effect of heat recovery and utilization；The flue gas cool-down mechanism is external to be passed
The ash-laden gas ingress pipe of air conducting mechanism and subtract cloud of dust gas delivery line.
Further technical scheme, flue gas cool-down mechanism is in the barrel-like structure closed, it is to avoid outer gas stream is to flue gas whole
Fluctuation is produced in individual technique, the ash-laden gas ingress pipe is penetrated at the top of barrel-like structure, and is inserted into the bottom of barrel-like structure
Portion, is increased in flue gas in the in-house flow distance of whole flue gas cool-down, allows bulky grain flue dust to have time enough cooling simultaneously
Fall；It is described to subtract the upper side that cloud of dust gas delivery line is fixed on barrel-like structure, subtract the flue gas after dirt and exported by the pipeline；Bucket
The bottom of shape structure is communicated in closing in shape, and depositing dust dust leg, is easy to the centralized collection of bulky grain flue dust and is concentrated after ash discharge
It is secondary to utilize.
Part inside further technical scheme, ash-laden gas ingress pipe insertion barrel-like structure is the loudspeaker gradually opened down
Shape opening, making the air velocity of flue gas gradually reduces, it is to avoid acutely reduces and causes technological fluctuation excessive, and gradually slows down dust-laden
The flowing velocity of flue gas, extension flue gas further allows bulky grain flue dust to have foot in the in-house flowing time of whole flue gas cool-down
The enough time cools and fallen.
Further technical scheme, air conducting mechanism is in the drum structure that top is gradually closed up, and is easy to the heat after heat exchange
Air, which is concentrated, carries out secondary heat exchange utilization after outflow；Diameter is more than the flue gas cool-down mechanism, the shape around flue gas cool-down mechanism
Into ring cavity；In the ring cavity of the cavity loop nested structure, stationary distribution has air conducting reinforcing mechanisms, improves air velocity,
And heat exchange efficiency is improved, ring cavity bottom is annular air intake.
Further technical scheme, air conducting reinforcing mechanisms are the deflector that homogeneous vertical formula is fixed, and both improve sky
The convection velocity that gas rises, can play the purpose of direct heat conduction again, and the in-house heat conduction of flue gas cool-down is exported, improved
The in-house cooling rate of flue gas cool-down.
Further technical scheme, deflector is distributed as the radian setting every 20~40 °, when being distributed overstocked, influences wind
Measure and enter, heat exchange when being distributed thin, influences wind speed using few.The angle of flare openings is 70~80 °, is open excessive, to whole
The fluctuation of individual technique is larger, during too small openings, does not have the effect of reduction wind speed.
Further technical scheme, the top of flue gas cool-down mechanism is provided with the drop for being fixed on air conducting mechanism side wall
Warm mechanism, to the barrel-like structure forced cooling of whole flue gas cool-down mechanism, when air conducting mechanism cooling-down effect is not obvious, rises
To the effect of supplement forced cooling.
Further technical scheme, cooling mechanism is equally distributed atomizer, lowering temperature uniform；The heat-exchanger rig is
Board-like or pipe heat exchanger, heat exchange efficiency is high.
Air-introduced machine is fixed at further technical scheme, air delivery tube outlet, plays a part of forced convertion, Ke Yiti
High heat exchange efficiency, and external residual heat using device, secondary utilize is carried out to waste heat；The depositing dust dust leg exit sets and puts ash
Valve, when stopping air inlet, is concentrated bulky grain soot emissions.
A kind of industrial production flue gas cool-down subtracts the recovery method of dirt waste-heat recovery device, and step is：
Step 1: ash-laden gas is imported：The ash-laden gas that ash-laden gas generating mechanism is produced is led by ash-laden gas ingress pipe
Enter flue gas cool-down in-house；
Step 2: gravity subtracts dirt：Bulky grain flue dust drops down onto flue gas cool-down actuator base under its own Action of Gravity Field；
Step 3: flue gas cool-down：Subtract the flue gas after dirt during the in-house rising of flue gas cool-down, in air conducting
In the presence of mechanism, two mechanisms heat exchange, the bulk temperature of whole flue gas cool-down mechanism declines, and the temperature for subtracting the flue gas after dirt is corresponding
Reduction；
Step 4: subtracting dirt cooling flue gas export：Subtract the flue gas after dirt cooling to export to secondary by subtracting cloud of dust gas delivery line
After dedusting mechanism, the gas discharge of cleaning, thin dirt is recycled；
Step 5: waste heat recovery：The heat produced after the heat exchange of air conducting mechanism leads to during the export of air delivery line
Heat-exchanger rig absorption is crossed, and is utilized again by the way that residual heat using device is secondary.
Whole technical process cooling subtracts dirt, UTILIZATION OF VESIDUAL HEAT IN, fume recovery and carried out simultaneously, moreover, avoiding to whole technique
Process variation influences, and the product quality for improving production process is stable.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) a kind of industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, by air conducting mechanism to whole
Individual device is cooled, and bulky grain flue dust is due to temperature reduction, and density becomes big, so that drop in the bottom of flue gas cool-down mechanism,
Reach that the first step subtracts the effect of dirt, heat-exchanger rig absorbs the heat that air conducting mechanism exchanges heat by heat-exchanger rig, reaches heat
The effect that amount is recycled, three mechanisms synergies reach ash-laden gas cooling whereabouts recovery, the mesh of heat recovery and utilization
, cold blast sliding valve is converted furthermore, it is possible to cut down, fluctuation will not be produced to the technique of whole system, the product quality of production is stable；
(2) a kind of industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, the barrel-like structure of closing, it is to avoid
Outer gas stream produces fluctuation to flue gas in whole technique, and system pressure difference resistance damages small, only 50-200Pa, main technique system is not influenceed
System, it is not necessary to increase other devices, guarantee is provided for flue gas qualified discharge；The flowing of flue gas is V-shaped, increases and exists in flue gas
The in-house flow distance of whole flue gas cool-down, allows bulky grain flue dust to have time enough to cool and fall；Closing in shape bucket bottom, and
Depositing dust dust leg is communicated, and is easy to the centralized collection of bulky grain flue dust and is concentrated the secondary utilization after ash discharge；
(3) a kind of industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, under the flare openings opened make cigarette
The air velocity of gas is gradually reduced, it is to avoid is acutely reduced and is caused technological fluctuation excessive, and gradually slows down the flowing of ash-laden gas
Speed, extension flue gas further allows bulky grain flue dust to have time enough drop in the in-house flowing time of whole flue gas cool-down
Temperature simultaneously falls；And the flue-gas temperature of stable and uniform is fully buffered, the main technology stability of lifting production can to greatest extent be reduced and prevented
Cold wind is converted, main air blower load is reduced, production capacity is lifted；
(4) a kind of industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, and it is barrel-shaped that top is gradually closed up
Air conducting mechanism, is easy to the hot-air after heat exchange to concentrate and secondary heat exchange utilization is carried out after outflow, it is possible to circulate for other
System, realizes energy-saving and emission-reduction；Normal heat exchange is carried out by convection current, it is not necessary to increase the equipment such as blower fan and power consumption；
(5) a kind of industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, the water conservancy diversion that homogeneous vertical formula is fixed
Plate, had both improved the convection velocity of air rising, and the purpose of direct heat conduction can have been played again, by the in-house heat of flue gas cool-down
Conduction export, improves the in-house cooling rate of flue gas cool-down；
(6) a kind of industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, it is determined that accurate deflector point
The radian of cloth is set and the angle of flare openings is set, and small only 50-200Pa is damaged in the resistance of apparatus system pressure difference, and main work is not influenceed
Process system, it is not necessary to increase other devices, guarantee is provided for flue gas qualified discharge；Reduction is to sack cleaner cloth in final dusting
Bag temperature requirement, it is ensured that the safe operation of sack cleaner and cloth bag requirement, while discharge flue-gas temperature is reduced, can be by
More than 1mm bulky grain processing more than 90%, preventing the big bulky grain of amount of stored heat influences follow-up final dusting, such as, if not
Processing, bulky grain flue dust can be by cloth bag (being usually chemical fibre material) scaling loss in bag-type dust；
(7) industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, the cooler of air conducting mechanism side wall
The setting of structure, it is therefore an objective to when temperature is too high in whole device has little time cooling, play a part of supplementing forced cooling, to reach
It is perfectly safe；
(8) industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, and flue gas cool-down mechanism diameter is fume pipe
More than 3 times of road, it is therefore an objective to which, when production technology fluctuation causes stress fluctuation, flue gas cool-down mechanism plays " accumulator " effect,
The steady of whole production system overall process, buffering and stability are realized, is more matched with the parameter for reaching whole system, efficiency
Higher, regulation is easier；
(9) industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, and equally distributed atomizer, cooling is equal
Even, moreover, easily producing vapor, cooling effect is more obvious, efficiency high；
(10) industrial production flue gas cool-down of the invention subtracts dirt waste-heat recovery device, and air-introduced machine is played to be forced to strengthen to air
The effect of convection current, further to improve heat exchange efficiency；External residual heat using device can carry out secondary utilize to waste heat；
(11) industrial production flue gas cool-down of the invention subtracts the recovery method of dirt waste-heat recovery device, whole technical process drop
Temperature subtracts dirt, UTILIZATION OF VESIDUAL HEAT IN, fume recovery and carried out simultaneously, moreover, avoiding to whole technical process influence of fluctuations, the product of production
Steady quality.
Brief description of the drawings
Fig. 1 subtracts dirt waste-heat recovery device structural representation for the industrial production flue gas cool-down of the present invention；
Fig. 2 is the A-A faces profile in Fig. 1；
Fig. 3 is the B-B faces profile in Fig. 2；
Fig. 4 subtracts the recovery method flow chart of dirt waste-heat recovery device for the industrial production flue gas cool-down of the present invention.
In figure：1st, air delivery line；2nd, ash-laden gas ingress pipe；3rd, flue gas cool-down mechanism；5th, air conducting mechanism；6th, drop
Dirt dust leg；7th, air conducting reinforcing mechanisms；8th, cloud of dust gas delivery line is subtracted；9th, cooling mechanism；10th, air intake；11st, heat exchange dress
Put；21st, flare openings；61st, ash-removing valve；100th, ash-laden gas generating mechanism；200th, final dusting mechanism.
Embodiment
To further appreciate that present disclosure, with reference to accompanying drawing, the present invention is described in detail.
Embodiment 1
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, including：Air conducting mechanism 5, Ke Yicheng
Vertical or horizontal barrel-like structure, the present embodiment uses vertical barrel-like structure, and a diameter of 3400mm is highly 4600mm, is used for
Whole device is cooled；It is in the sleeved knot of cavity in the inside of the air conducting mechanism 5, and with air conducting mechanism 5
The flue gas cool-down mechanism 3 of structure, also in vertical tubbiness, a diameter of 3000mm is highly 4000mm, and bulky grain flue dust is dropped due to temperature
Low, density becomes big, drops in the bottom of flue gas cool-down mechanism 3, reaches that the first step subtracts the effect of dirt；And it is fixed on the air
Heat-exchanger rig 11 inside the air delivery line 1 at the top of deflector 5, can be board-like or pipe heat exchanger, by air conducting
The heat that mechanism 5 exchanges heat is absorbed by heat-exchanger rig 11, reaches the effect of heat recovery and utilization；Outside the flue gas cool-down mechanism 3
Connect and pass the ash-laden gas ingress pipe 2 of air conducting mechanism 5 and subtract cloud of dust gas delivery line 8, diameter is 1000mm, by dust constaining
Conductance enters after processing, then the flue gas for subtracting dirt cooling is exported.
Embodiment 2
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 1, different and change
Enter part to be：As shown in Figure 1,3, flue gas cool-down mechanism 3 is in the barrel-like structure closed, it is to avoid outer gas stream is to flue gas whole
Fluctuation is produced in technique, the ash-laden gas ingress pipe 2 is penetrated at the top of barrel-like structure, and is inserted into the bottom of barrel-like structure
Portion, increases the flow distance in whole flue gas cool-down mechanism 3 in flue gas, allows bulky grain flue dust to have time enough cooling simultaneously
Fall；It is described to subtract the upper side that cloud of dust gas delivery line 8 is fixed on barrel-like structure, subtract the flue gas after dirt and exported by the pipeline；
The bottom of barrel-like structure is communicated in closing in shape, and depositing dust dust leg 6, is easy to the centralized collection of bulky grain flue dust and is concentrated after ash discharge
Secondary utilization.
Embodiment 3
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 2, different and change
Enter part to be：Part inside the insertion barrel-like structure of ash-laden gas ingress pipe 2 is the flare openings 21 gradually opened down, makes cigarette
The air velocity of gas is gradually reduced, it is to avoid is acutely reduced and is caused technological fluctuation excessive, and gradually slows down the flowing of ash-laden gas
Speed, flowing time of the extension flue gas in whole flue gas cool-down mechanism 3, further allows bulky grain flue dust to have time enough drop
Temperature simultaneously falls.Air conducting mechanism 5 is in the drum structure that top is gradually closed up, and is easy to the hot-air after heat exchange to concentrate outflow laggard
Row secondary heat exchange is utilized；Diameter is more than the flue gas cool-down mechanism 3, and ring cavity is formed around flue gas cool-down mechanism 3；In the sky
In the ring cavity of the sleeved structure of chamber, stationary distribution has an air conducting reinforcing mechanisms 7, improves air velocity, and improves heat exchange efficiency,
Ring cavity bottom is annular air intake 10.
Embodiment 4
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, and air conducting reinforcing mechanisms 7 are uniform perpendicular
The deflector of straight fixation, had both improved the convection velocity of air rising, the purpose of direct heat conduction can be played again, flue gas is dropped
Heat conduction export in warm mechanism 3, improves the cooling rate inside flue gas cool-down mechanism 3.The top of flue gas cool-down mechanism 3,
The cooling mechanism 9 for being fixed on the side wall of air conducting mechanism 5 is provided with, the barrel-like structure of whole flue gas cool-down mechanism 3 is forced to drop
Temperature, when the cooling-down effect of air conducting mechanism 5 is not obvious, plays a part of supplementing forced cooling.Cooling mechanism 9 can be uniform
The atomizer of distribution, lowering temperature uniform；The heat-exchanger rig 11 is board-like or pipe heat exchanger, and heat exchange efficiency is high.
Embodiment 5
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 4, different and change
Enter part to be：Air-introduced machine is fixed in the exit of air delivery line 1, is played a part of forced convertion, can be improved heat exchange efficiency, and
External residual heat using device, secondary utilize is carried out to waste heat；The exit of depositing dust dust leg 6 sets ash-removing valve 61, stop into
During gas, concentrate bulky grain soot emissions.
Embodiment 6
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 4, different and change
Enter part to be：Deflector is distributed as the radian setting every 20 °, altogether 18.The angle of flare openings 21 is 80 °；It is empty
Gas deflector 5 and the diameter of flue gas cool-down mechanism 3 ratio are 1.1：1；Flue gas cool-down mechanism 3, ash-laden gas ingress pipe 2 and subtract dirt
The diameter ratio of flue gas delivery line 8 is：(3~5)：1：1, be respectively in the present embodiment：5500mm, 5000mm, 1000mm and
1000mm。
The industrial production flue gas cool-down of the present embodiment subtracts the recovery method of dirt waste-heat recovery device, as shown in figure 4, step
For：
Step 1: ash-laden gas is imported：Ash-laden gas generating mechanism 100, such as blast furnace, the ash-laden gas temperature of generation is
400 DEG C or so, and rich in bulky grain flue dust, such as diameter is more than 1mm, flue gas cool-down mechanism 3 is imported by ash-laden gas ingress pipe 2
It is internal；
Step 2: gravity subtracts dirt：Bulky grain flue dust drops down onto the bottom of flue gas cool-down mechanism 3 under its own Action of Gravity Field；
Step 3: flue gas cool-down：Subtract the flue gas after dirt during rising inside flue gas cool-down mechanism 3, led in air
Flow in the presence of mechanism 5, two mechanisms heat exchange, the bulk temperature of whole flue gas cool-down mechanism 3 declines, and subtracts the temperature of the flue gas after dirt
Corresponding reduction；Halfway bulky grain fall due to temperature reduction, under the principle expanded with heat and contract with cold, self gravitation is worked as in density increase
When gradually increasing to the buoyancy more than air-flow, the bottom for falling to flue gas cool-down mechanism 3 that will continue, i.e.,：Ash-laden gas exists
Inside flue gas cool-down mechanism 3, either decline in still uphill process, because air conducting mechanism 5 is to flue gas cool-down mechanism 3
Cooling effect, can all have bulky grain flue dust is lasting to drop, if flue gas cool-down mechanism 3 is sufficiently high, in theory, all bulky grains
Flue dust can all drop；
Step 4: subtracting dirt cooling flue gas export：Subtract the flue gas after dirt cooling to export to secondary by subtracting cloud of dust gas delivery line 8
After dedusting mechanism 200, final dusting can use bag-type dust, cyclone dust removal, inertial dust collection etc., it might even be possible to continuously discharge some
The industrial production flue gas cool-down of individual the present embodiment subtracts dirt waste-heat recovery device, until the gas discharge of cleaning, thin dirt is recycled；
Step 5: waste heat recovery：The heat that produces is during the export of air delivery line 1 after air conducting mechanism 5 exchanges heat,
Absorbed by heat-exchanger rig 11, such as tubular type or plate type heat exchanger, and again by residual heat using device, such as evaporator, it is secondary
Utilize.
After testing, flue gas after treatment, subtract cloud of dust gas delivery line 8 export after, temperature be less than 180 DEG C, and by 1mm with
On bulky grain reduce to less than 10%, destructive effect will not be produced to final dusting device.
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, and the diameter of flue gas cool-down mechanism 3 is flue gas
5 times of pipeline, it is therefore an objective to when production technology fluctuation causes stress fluctuation, by the release of the heat balance in flue to more than ten
In the space of the flue gas cool-down mechanism 3 of even twenties times of opposing seal, flue gas cool-down mechanism 3 plays " accumulator " effect,
The steady of whole production system overall process, buffering and stability are realized, is more matched with the parameter for reaching whole system, efficiency
Higher, regulation is easier.
Embodiment 7
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 6, different and change
Enter part to be：As shown in Fig. 2 deflector is distributed as the radian setting every 30 °, altogether 12.The angle of flare openings 21
Spend for 70 °.
After testing, flue gas after treatment, subtract cloud of dust gas delivery line 8 export after, temperature be less than 150 DEG C, and by 1mm with
On bulky grain reduce to less than 5%, destructive effect will not be produced to final dusting device.
Embodiment 8
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 6, different and change
Enter part to be：Deflector is distributed as the radian setting every 40 °, altogether 9.The angle of flare openings 21 is 75 °.
After testing, flue gas after treatment, subtract cloud of dust gas delivery line 8 export after, temperature be less than 120 DEG C, and by 1mm with
On bulky grain reduce to less than 3%.
Embodiment 9
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 5, deflector point
Cloth is the radian setting every 30 °, altogether 12.The angle of flare openings 21 is 70 °.The industrial production flue gas of the present embodiment
Cooling subtracts the recovery method of dirt waste-heat recovery device, and step is：
Step 1: ash-laden gas is imported：Ash-laden gas generating mechanism 100, such as blast furnace, the ash-laden gas temperature of generation is
More than 500 DEG C, and rich in bulky grain flue dust, such as diameter is more than 1mm, flue gas cool-down mechanism 3 is imported by ash-laden gas ingress pipe 2
It is internal；
Step 2: gravity subtracts dirt：Bulky grain flue dust drops down onto the bottom of flue gas cool-down mechanism 3 under its own Action of Gravity Field；
Step 3: flue gas cool-down：Subtract the flue gas after dirt during rising inside flue gas cool-down mechanism 3, led in air
Flow in the presence of mechanism 5, two mechanisms heat exchange, the bulk temperature of whole flue gas cool-down mechanism 3 declines, and subtracts the temperature of the flue gas after dirt
Corresponding reduction；Because early stage entrance flue gas temperature is too high, starts atomizer and pressure drop is carried out to the staving of flue gas cool-down mechanism 3
Temperature；Restart air-introduced machine, the convection current to the air in ring cavity is strengthened；So, to temperature inside the staving of flue gas cool-down mechanism 3
The cooling-down effect of degree is increased exponentially, and plays a part of collaboration；Halfway bulky grain fall due to temperature reduction, expands with heat and contract with cold
Principle under, density increase, when self gravitation gradually increases to the buoyancy more than air-flow, will continue fall to flue gas drop
The bottom of warm mechanism 3, i.e.,：Ash-laden gas declines inside flue gas cool-down mechanism 3, either in still uphill process, due to sky
Cooling effect of the gas deflector 5 to flue gas cool-down mechanism 3, can all have bulky grain flue dust is lasting to drop, if flue gas cool-down
Mechanism 3 is sufficiently high, in theory, and all bulky grain flue dust can all drop；
Step 4: subtracting dirt cooling flue gas export：Subtract the flue gas after dirt cooling to export to secondary by subtracting cloud of dust gas delivery line 8
After dedusting mechanism 200, final dusting can use bag-type dust, cyclone dust removal, inertial dust collection etc., it might even be possible to continuously discharge some
The industrial production flue gas cool-down of individual the present embodiment subtracts dirt waste-heat recovery device, until the gas discharge of cleaning, thin dirt is recycled；
Step 5: waste heat recovery：The heat that produces is during the export of air delivery line 1 after air conducting mechanism 5 exchanges heat,
Absorbed by heat-exchanger rig 11, such as tubular type or plate type heat exchanger, and again by residual heat using device, such as evaporator, it is secondary
Utilize.
After testing, although early stage flue dust temperature is too high, but after treatment, subtract after the export of cloud of dust gas delivery line 8, temperature
Reduce to less than 10%, final dusting device will not also be produced destructive less than 150 DEG C, and by more than 1mm bulky grain
Effect.It is additionally, since air conducting mechanism 5 and flue gas cool-down mechanism 3 is relatively isolated, strengthens convection current and forced cooling all without right
The inside smoke of flue gas cool-down mechanism 3 produces excessive fluctuation, would not also influence the fluctuation of whole technical process.
Embodiment 10
The industrial production flue gas cool-down of the present embodiment subtracts dirt waste-heat recovery device, basic structure be the same as Example 9, different and change
Enter part to be：Because the vapor that atomizer is produced is excessive, heat-exchanger rig 11 and secondary waste heat can be influenceed to utilize device
Service life, therefore, for the ash-laden gas no more than 500 DEG C, atomizer can not be started, it is necessary to when, it is only necessary to start
Air-introduced machine is that can reach the effect that cooling subtracts dirt.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of industrial production flue gas cool-down subtracts dirt waste-heat recovery device, it is characterised in that including：
Air conducting mechanism (5)；
In the inside of the air conducting mechanism (5), and with air conducting mechanism (5) be in cavity loop nested structure flue gas cool-down
Mechanism (3)；And
The heat-exchanger rig (11) for air delivery line (1) inside being fixed at the top of the air conducting mechanism (5)；
The external ash-laden gas ingress pipe (2) for passing air conducting mechanism (5) of the flue gas cool-down mechanism (3) and subtract cloud of dust conductance
Outlet pipe (8).
2. industrial production flue gas cool-down according to claim 1 subtracts dirt waste-heat recovery device, it is characterised in that：The flue gas
Cooling mechanism (3) is in the barrel-like structure of closing, and the ash-laden gas ingress pipe (2) penetrates at the top of barrel-like structure, and inserts
To the bottom of barrel-like structure；It is described to subtract the upper side that cloud of dust gas delivery line (8) is fixed on barrel-like structure；The barrel-like structure
Bottom is communicated in closing in shape, and depositing dust dust leg (6).
3. industrial production flue gas cool-down according to claim 2 subtracts dirt waste-heat recovery device, it is characterised in that：The dust-laden
Part inside flue gas ingress pipe (2) insertion barrel-like structure is the flare openings (21) gradually opened down.
4. industrial production flue gas cool-down according to claim 3 subtracts dirt waste-heat recovery device, it is characterised in that：The air
Deflector (5) is in the drum structure that top is gradually closed up, and diameter is more than the flue gas cool-down mechanism (3)；In the cavity loop
In the ring cavity of nested structure, stationary distribution has air conducting reinforcing mechanisms (7), and ring cavity bottom is air intake (10).
5. industrial production flue gas cool-down according to claim 4 subtracts dirt waste-heat recovery device, it is characterised in that：The air
Water conservancy diversion reinforcing mechanisms (7) are the deflector that homogeneous vertical formula is fixed.
6. industrial production flue gas cool-down according to claim 5 subtracts dirt waste-heat recovery device, it is characterised in that：The water conservancy diversion
Plate is distributed as the radian setting every 20~40 °；The angle of the flare openings (21) is 70~80 °.
7. industrial production flue gas cool-down according to claim 5 subtracts dirt waste-heat recovery device, it is characterised in that：The flue gas
The top of cooling mechanism (3), is provided with the cooling mechanism (9) for being fixed on air conducting mechanism (5) side wall.
8. industrial production flue gas cool-down according to claim 7 subtracts dirt waste-heat recovery device, it is characterised in that：The cooling
Mechanism (9) is equally distributed atomizer；The heat-exchanger rig (11) is board-like or pipe heat exchanger.
9. industrial production flue gas cool-down according to claim 7 subtracts dirt waste-heat recovery device, it is characterised in that：The air
Air-introduced machine, and external residual heat using device are fixed in delivery line (1) exit；Depositing dust dust leg (6) exit sets and puts ash
Valve (61).
10. a kind of industrial production flue gas cool-down subtracts the recovery method of dirt waste-heat recovery device, it is characterised in that step is：
Step 1: ash-laden gas is imported：The ash-laden gas that ash-laden gas generating mechanism (100) is produced is by ash-laden gas ingress pipe
(2) flue gas cool-down mechanism (3) is imported internal；
Step 2: gravity subtracts dirt：Bulky grain flue dust drops down onto flue gas cool-down mechanism (3) bottom under its own Action of Gravity Field；
Step 3: flue gas cool-down：Subtract the flue gas after dirt during rising inside flue gas cool-down mechanism (3), in air conducting
In the presence of mechanism (5), two mechanisms heat exchange, the bulk temperature of whole flue gas cool-down mechanism (3) declines, and subtracts the temperature of the flue gas after dirt
Degree is corresponding to be reduced and uniform and stable；
Step 4: subtracting dirt cooling flue gas export：Subtract the flue gas after dirt cooling and exported to secondary by subtracting cloud of dust gas delivery line (8) and removed
Dirt mechanism (200)；
Step 5: waste heat recovery：The heat that produces is during air delivery line (1) export after air conducting mechanism (5) heat exchange,
Absorbed, and utilized again by the way that residual heat using device is secondary by heat-exchanger rig (11).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854478A (en) * | 2018-07-10 | 2018-11-23 | 界首市菁华科技信息咨询服务有限公司 | A kind of secondary lead smelting exhaust closing desulfurization and dedusting circulatory system and technique of zero discharge |
| CN109297341A (en) * | 2018-09-19 | 2019-02-01 | 国电龙源电力技术工程有限责任公司 | A kind of steam power plant's waste-heat recovery device |
| CN113805623A (en) * | 2021-08-23 | 2021-12-17 | 马鞍山钢铁股份有限公司 | Temperature-stabilizing regulation control model of air self-convection box-type partition plate device and application method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202283435U (en) * | 2011-11-01 | 2012-06-27 | 高艳华 | Energy-saving dust remover |
| CN102878821A (en) * | 2012-10-24 | 2013-01-16 | 广西有色再生金属有限公司 | Smoke purifying and waste heat recycling device for low-grade composition brass smelting and control method of smoke purifying and waste heat recycling device |
| CN104180678A (en) * | 2014-09-15 | 2014-12-03 | 上海宝钢节能环保技术有限公司 | Anti-blockage rotary hearth furnace smoke processing system and method |
| CN106693522A (en) * | 2015-11-17 | 2017-05-24 | 湖北实美科技有限公司 | Smelting furnace flue gas dust removal device |
| CN106906331A (en) * | 2017-03-30 | 2017-06-30 | 河北华奥节能科技有限公司 | A kind of dry-method dust-removal device and method for reclaiming converter gas waste heat |
| CN207197278U (en) * | 2017-07-24 | 2018-04-06 | 马鞍山钢铁股份有限公司 | A kind of industrial production flue gas cool-down subtracts dirt waste-heat recovery device |
-
2017
- 2017-07-24 CN CN201710605634.3A patent/CN107270729A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202283435U (en) * | 2011-11-01 | 2012-06-27 | 高艳华 | Energy-saving dust remover |
| CN102878821A (en) * | 2012-10-24 | 2013-01-16 | 广西有色再生金属有限公司 | Smoke purifying and waste heat recycling device for low-grade composition brass smelting and control method of smoke purifying and waste heat recycling device |
| CN104180678A (en) * | 2014-09-15 | 2014-12-03 | 上海宝钢节能环保技术有限公司 | Anti-blockage rotary hearth furnace smoke processing system and method |
| CN106693522A (en) * | 2015-11-17 | 2017-05-24 | 湖北实美科技有限公司 | Smelting furnace flue gas dust removal device |
| CN106906331A (en) * | 2017-03-30 | 2017-06-30 | 河北华奥节能科技有限公司 | A kind of dry-method dust-removal device and method for reclaiming converter gas waste heat |
| CN207197278U (en) * | 2017-07-24 | 2018-04-06 | 马鞍山钢铁股份有限公司 | A kind of industrial production flue gas cool-down subtracts dirt waste-heat recovery device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108854478A (en) * | 2018-07-10 | 2018-11-23 | 界首市菁华科技信息咨询服务有限公司 | A kind of secondary lead smelting exhaust closing desulfurization and dedusting circulatory system and technique of zero discharge |
| CN109297341A (en) * | 2018-09-19 | 2019-02-01 | 国电龙源电力技术工程有限责任公司 | A kind of steam power plant's waste-heat recovery device |
| CN113805623A (en) * | 2021-08-23 | 2021-12-17 | 马鞍山钢铁股份有限公司 | Temperature-stabilizing regulation control model of air self-convection box-type partition plate device and application method |
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