CN106237736A - Dust arrester - Google Patents
Dust arrester Download PDFInfo
- Publication number
- CN106237736A CN106237736A CN201610812895.8A CN201610812895A CN106237736A CN 106237736 A CN106237736 A CN 106237736A CN 201610812895 A CN201610812895 A CN 201610812895A CN 106237736 A CN106237736 A CN 106237736A
- Authority
- CN
- China
- Prior art keywords
- filter chamber
- dust arrester
- inlet manifold
- dust
- blowback
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000428 dust Substances 0.000 title claims abstract description 73
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 24
- 238000012856 packing Methods 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000571 coke Substances 0.000 abstract description 31
- 238000001914 filtration Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 62
- 239000010410 layer Substances 0.000 description 32
- 239000011269 tar Substances 0.000 description 10
- 239000003034 coal gas Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- -1 Margarita Rock Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/20—High temperature filtration
Abstract
The invention discloses a kind of dust arrester.This device includes housing, inlet manifold, at least one air intake branch, exhaust main and at least one exhaust branch pipe；It is provided with at least one filter chamber in housing, each filter chamber is provided with filter chamber's air inlet and filter chamber's air vent；Being provided with house steward's air inlet on inlet manifold, inlet manifold is reducer pipe, and along the direction away from house steward's air inlet, the caliber of inlet manifold is gradually reduced；One end of air intake branch connects with inlet manifold, and the other end connects with corresponding filter chamber air inlet；One end of exhaust branch pipe connects with exhaust main, and the other end connects with corresponding filter chamber air vent.Owing to inlet manifold is reducer pipe, and along the direction away from house steward's air inlet, the caliber of inlet manifold is gradually reduced, and makes high temperature raw coke oven gas close to constant voltage in inlet manifold, and enters each filter chamber under pressure constant state.This is avoided that in filtration the bigger temperature difference occur, separates out possible it is thus possible to reduce tar.
Description
Technical field
The present invention relates to Coal Chemical Industry high temperature air filtration technical field, in particular to a kind of dust arrester.
Background technology
High-temperature dusty gas is often produced in industries such as chemical industry, oil, metallurgy.Particularly at coal dry distilling grading process
In, containing substantial amounts of coal dust dust in the high temperature raw coke oven gas of generation, and mixed gas easily separates out material such as tar containing carbons,
Only can exist with gaseous state in hot environment.Temperature is slightly lower or environment once changes, and is easy for from mixed gas
Slowly separate out.
Conventional high-temperature raw coke oven gas purification techniques, conventional has permeable-gas ceramics pipe (micropore ceramics and ceramic membrane) cleaner unit；Greatly
Type pocket type reverse blowing dust remover；Multicyclone；Water washing dedust purification etc..Earthenware (micropore ceramics and ceramic membrane) cleaner unit
Under worst hot case, filter effect can meet, but along with the prolongation of dedusting time, the hole of earthenware (film) can block, then
Raw maintenance is more difficult, and online blowback is safeguarded needs the biggest power, and costly, maintenance cost is the highest for calcination cleaning cycle length.Greatly
The better dust removal effect of type pocket type reverse blowing dust remover such as off-line ash-clearing sack cleaner, but maximum operation (service) temperature typically only 280
About DEG C, the technological requirement that can not meet.And because in gaseous mixture, water vapour content is big, easily stick with paste dead blocking in cloth bag appearance and
Lost efficacy.Multi-cyclone dedusting technology is the simplest, and whirlwind tolerance distribution inequality, dust removing effects is unstable, and import dust stratification blocks up
Plug phenomenon, thus it is extremely difficult to preferable dust removing effects.Use simple washing treatment and purification raw coke oven gas, owing to raw coke oven gas carrying
There are substantial amounts of tar, part ammonia, phenol and oily substance can stay in water, bring the most serious pollution problem to environment.
The composition of caking is condensed, thus for cleaner unit temperature requirement more containing Yi Yuleng just because of in raw coke oven gas
Strictly, it is necessary to strict control enters the gas temperature within cleaner unit and system dissipated heat, it is ensured that nearly temperature constant state.But it is existing
Heat-preserving equipment structure complicated, particularly limited to protective measure at cinder-discharging port, often occur that ashes condenses at ash bucket, even
Cause cold air to leak into and cause the composition condensations such as coal tar to cause equipment fault.
For these reasons, it is necessary to the dust arrester that a kind of internal temperature environment is relatively stable is provided.
Summary of the invention
It is desirable to provide a kind of dust arrester, during to solve prior art processes high-temperature dusty gas because of temperature not
Stably it is easily caused tar easily to separate out and the problem that causes equipment fault.
To achieve these goals, according to an aspect of the invention, it is provided a kind of dust arrester, comprising: housing,
It is provided with at least one filter chamber in housing, each filter chamber is provided with filter chamber's air inlet and filter chamber's air vent；
Inlet manifold, inlet manifold is provided with house steward's air inlet, and inlet manifold is reducer pipe, and along the side away from house steward's air inlet
To, the caliber of inlet manifold is gradually reduced；At least one air intake branch, one end of air intake branch connects with inlet manifold, another
Hold and connect with corresponding filter chamber air inlet；Exhaust main；And at least one exhaust branch pipe, one end of exhaust branch pipe and aerofluxus
House steward connects, and the other end connects with corresponding filter chamber air vent.
Further, dust arrester includes multiple filter chamber, and each filter chamber axially setting gradually along housing, in filter chamber
It is provided with flood filter course.
Further, flood filter course includes the most successively: packing layer；Screen plate；And bottom swash plate；Bottom is tiltedly
Forming air cavity between the sidewall of plate, screen plate and housing, bottom swash plate filters along near one end of filter chamber's air inlet to close
One end of room air vent is downward-sloping；Wherein, filter chamber's air inlet is positioned at the top of flood filter course, filter chamber's air vent and gas
Chamber is connected.
Further, dust arrester includes multiple filter chamber, and inlet manifold is stepped reducer pipe, and stepped reducer pipe
Reducer and filter chamber's one_to_one corresponding.
Further, dust arrester also includes: blowback house steward；At least one blowback arm, with exhaust branch pipe one_to_one corresponding
Arranging, one end of blowback arm connects with blowback house steward, and the other end connects with corresponding exhaust branch pipe.
Further, inlet manifold is additionally provided with semi-coke powder outlet.
Further, dust arrester also includes dust collecting box, and dust collecting box is positioned at the lower section of semi-coke powder outlet.
Further, dust collecting box is provided with level-sensing device.
Further, dust arrester also includes valve body, and valve body includes: the first valve body, is arranged on air intake branch；Second valve
Body, is arranged on exhaust main, and by gas flow direction, the second valve body is positioned at the downstream of exhaust branch pipe；3rd valve body, is arranged
On the pipeline section between blowback arm and exhaust main of exhaust branch pipe；And the 4th valve body, it is arranged on blowback arm.
Further, valve body is high-temperature ball valve, high temperature butterfly valve or high temperature cut-off valve.
Further, the inwall of housing is provided with heat-resistant anticorrosive erosion wear-resistant paint layer.
Further, the outer surface of housing is provided with the first heat-insulation layer.
Further, the outer surface of inlet manifold is provided with the second heat-insulation layer, and the outer surface of air intake branch is provided with the 3rd
Heat-insulation layer, the outer surface of exhaust main is provided with the 4th heat-insulation layer, and the outer surface of exhaust branch pipe is provided with the 5th heat-insulation layer.
Further, the outer surface of blowback house steward is provided with the 6th heat-insulation layer, and the outer surface of blowback arm is provided with the 7th
Heat-insulation layer.
Further, dust arrester also includes that thermometer and Pressure gauge, thermometer and Pressure gauge are arranged at blowback house steward
On, and press the flow direction of gas, thermometer and Pressure gauge are respectively positioned on the upstream of blowback arm.
The invention provides a kind of dust arrester, utilize inlet manifold and air intake branch that high temperature raw coke oven gas is passed through housing
Filter chamber carries out dedusting.Raw coke oven gas after dedusting is discharged by exhaust branch pipe and exhaust main.Owing to inlet manifold is reducing
Pipe, and along the direction away from house steward's air inlet, the caliber of inlet manifold is gradually reduced so that high temperature raw coke oven gas is in inlet manifold
Close to constant voltage, and under pressure constant state, enter each filter chamber filter.This makes it possible to avoid that filter chamber occurs bigger temperature
It is poor to spend such that it is able to reduce the probability that tar separates out, it is ensured that the longtime running of equipment.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram according to the dust arrester in one embodiment of the present invention；
Fig. 2 shows the schematic diagram according to the filter course in the dust arrester in one embodiment of the present invention.
Wherein, reference is as follows:
10, housing；11, filter chamber；12, flood filter course；121, the first packing layer；122, the second packing layer；123, mistake
Filter plate；124, bottom swash plate；125, air cavity；20, inlet manifold；21, house steward's air inlet；22, semi-coke powder outlet；30, air inlet is propped up
Pipe；31, the first valve body；40, exhaust main；41, the second valve body；50, exhaust branch pipe；51, the 3rd valve body；60, blowback arm；
61, the 4th valve body.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As background section is introduced, easily lead because of temperature instability when prior art processes high-temperature dusty gas
Cause tar easily to separate out, thus easily cause equipment fault.In order to solve this problem, the invention provides a kind of dust arrester,
As it is shown in figure 1, this dust arrester includes: housing 10, inlet manifold 20, at least one air intake branch 30, exhaust main 40 and
At least one exhaust branch pipe 50；It is provided with at least one of which filter chamber 11 in housing 10, each filter chamber 11 was provided with
Filter chamber air inlet and filter chamber's air vent；Being provided with house steward's air inlet 21 on inlet manifold 20, inlet manifold 20 is reducer pipe, and
Along the direction away from house steward's air inlet 21, the caliber of inlet manifold 20 is gradually reduced；One end of air intake branch 30 and inlet manifold
20 connections, the other end connects with corresponding filter chamber air inlet；One end of exhaust branch pipe 50 connects with exhaust main 40, the other end
Connect with corresponding filter chamber air vent.
In the above-mentioned dust arrester that the present invention provides, inlet manifold 20 and air intake branch 30 is utilized to be passed through by high temperature raw coke oven gas
The filter chamber 11 of housing 10 carries out dedusting.Raw coke oven gas after dedusting is discharged by exhaust branch pipe 50 and exhaust main 40.Due to
Inlet manifold 20 is reducer pipe, and along the direction away from house steward's air inlet 21, the caliber of inlet manifold 20 is gradually reduced so that high
Temperature raw coke oven gas close to constant voltage, and enters each filter chamber 11 under pressure constant state and filters in inlet manifold 20.Thus can
Enough avoid filter chamber 11 occurs bigger temperature difference such that it is able to reduce the probability that tar separates out, it is ensured that the long-term fortune of equipment
OK.
In a kind of preferred embodiment, housing 10 is provided with multiple filter chamber 11.Correspondingly, high temperature raw coke oven gas passes through
Multiple air intake branches 30, enter different filter chambers 11 with the state of approximate constant voltage, and do not connect between each filter chamber 11.So
The temperature difference within the most each filter chamber 11 is less, and the most different temperature contrasts in filter chamber 11 is the least.So can enter
One step reduces the temperature difference within dust arrester, thus avoids the tar in high temperature raw coke oven gas to separate out further.
In a kind of preferred embodiment, each filter chamber 11 axially setting gradually along housing 10, filter chamber 11 is arranged
There is flood filter course 12.Flood filter course 12 refers to that filter course is paved with along the radial direction of housing 10, is different from traditional centre and has time
The annular filter layer of heart passage, utilizes flood filter course 12 can increase filter area, thus improves filter efficiency, so that housing
The height of 10 can be relatively low.So can reduce the temperature difference of device interior further, reduce the tar analysis in filter process
Output.
In a kind of preferred embodiment, as in figure 2 it is shown, flood filter course 12 includes the most successively: packing layer；Cross
Filter plate 123；And bottom swash plate 124；Bottom swash plate 124, between screen plate 123 and the sidewall of housing 10 formed air cavity 125, the end
Portion's swash plate 124 is along downward-sloping to one end of close filter chamber air vent near one end of filter chamber's air inlet；Wherein, filter chamber
Air inlet is positioned at the top of flood filter course 12, and filter chamber's air vent is connected with air cavity 125.Packing layer can be multilamellar knot
Structure, as in figure 2 it is shown, include the first packing layer 121 and the second packing layer 122.The filtrate of packing layer can be quartz sand, Margarita
Rock, limestone or semicoke etc..Filtrate in two-layer can be different material, different densities；Can also be material of the same race, upper heavy under
Gently, different-grain diameter.Preferably, bottom swash plate 124 is 10～20 ° with the angle of level, and gas is being internally formed a constant static-pressure, interior
Portion's flow velocity is 1.5m/s, and gas is flowed out with certain speed by gas at bottom swash plate 124, is fluidized by filtrate, and fine dust is blown
Go out to gathering dust in passage.
In a kind of preferred embodiment, inlet manifold 20 is stepped reducer pipe, and the reducer of stepped reducer pipe
With filter chamber 11 one_to_one corresponding.The reducer of stepped reducer pipe and filter chamber 11 one_to_one corresponding refer to a filter chamber whenever
11, the stepped reducing of inlet manifold 20 is once.Such setting can be further ensured that the air inlet constant voltage of each filter chamber 11,
Thus ensure the temperature uniformity within whole dust arrester.
In a kind of preferred embodiment, dust arrester also includes: blowback house steward；At least one blowback arm 60, with row
Gas branch pipe 50 one_to_one corresponding is arranged, and one end of blowback arm 60 connects with blowback house steward, the other end and corresponding exhaust branch pipe 50
Connection.Blowback house steward and blowback arm 60 are set, except the filtration granule in flood filter course 12 being carried out blowback, with again
Raw filter course, additionally it is possible to utilize purge gas to carry out concurrent heating, keeps the heat balance of system further.Specifically, clean coal is used
Gas is as purge gas.
In a kind of preferred embodiment, inlet manifold 20 is additionally provided with semi-coke powder outlet 22.In specific operation process
In, utilize the semi-coke powder outlet 22 on inlet manifold 20, it is possible to when purge gas carries out blowback, the dust of blowout is discharged.
Specifically, as it is shown in figure 1, inlet manifold 20 and housing 10 are in being arranged in an axially parallel mode, semi-coke powder outlet 22 is arranged on inlet manifold
The bottom of 20, the so dust of blowout can utilize the gravity of self to discharge.
In a kind of preferred embodiment, dust arrester also includes dust collecting box, and dust collecting box is positioned at semi-coke powder and goes out
The lower section of mouth 22.In a kind of preferred embodiment, dust collecting box is provided with level-sensing device, in order to indicate the collection of dust
Amount..
In a kind of preferred embodiment, dust arrester also includes valve body, and valve body includes: the first valve body 31, be arranged on into
On gas branch pipe 30；Second valve body 41, is arranged on exhaust main 40, and by gas flow direction, the second valve body 41 is positioned at aerofluxus
The downstream of arm 50；3rd valve body 51, is arranged on the pipe between blowback arm 60 and exhaust main 40 of exhaust branch pipe 50
Duan Shang；And the 4th valve body 61, it is arranged on blowback arm 60.These valve bodies are utilized can effectively to control entering of high temperature raw coke oven gas
Gas and aerofluxus and blowback operate.
In a kind of preferred embodiment, valve body is high-temperature ball valve, high temperature butterfly valve or high temperature cut-off valve.Preferably, valve body is
High temperature stop valve, so can cut off when occurring unexpected, it is ensured that the safety of equipment in time.
In a kind of preferred embodiment, the inwall of housing 10 is provided with heat-resistant anticorrosive erosion wear-resistant paint layer.Concrete
The material of heat-resistant anticorrosive erosion wear-resistant paint layer can be selected from high-temperature flame-proof pouring material or ceramic fibre spray paint.Coating layer thickness can
For 5cm, temperature is resistant to 600～700 DEG C.
In a kind of preferred embodiment, the outer surface of housing 10 is provided with the first heat-insulation layer.First heat-insulation layer energy is set
Enough heat insulation effects improving equipment further, reduce temperature difference, improve dust removing effects.Such as first heat-insulation layer selects heat-preservation cotton
(thickness can be 10cm), uses rustless steel or aluminium sheet to fix outside heat-preservation cotton.In like manner, in a kind of preferred embodiment, air inlet is total
The outer surface of pipe 20 is provided with the second heat-insulation layer, and the outer surface of air intake branch 30 is provided with the 3rd heat-insulation layer, exhaust main 40
Outer surface is provided with the 4th heat-insulation layer, and the outer surface of exhaust branch pipe 50 is provided with the 5th heat-insulation layer.In a kind of preferred embodiment
In, the outer surface of blowback house steward is provided with the 6th heat-insulation layer, and the outer surface of blowback arm 60 is provided with the 7th heat-insulation layer.
In a kind of preferred embodiment, dust arrester also includes that thermometer and Pressure gauge, thermometer and Pressure gauge are all provided with
Put on blowback house steward, and press the flow direction of gas, thermometer and Pressure gauge and be respectively positioned on the upstream of blowback arm 60.In order to supervise
Surveying purge gas temperature, pressure, in practical operation, purge gas temperature is 450～500 DEG C, and pressure is 0.5～4KPa the suitableeest
Preferably.Concrete employing purified gas is as blowback medium.
It is above-mentioned when being passed through blowback air, it is desirable to close the valve on exhaust branch pipe 50, open the valve on air intake branch 30,
Blowback air enters into inlet manifold 20, ash deadweight settlement section with ash, is partially into next layer of filter chamber 11, then instead
Under air blowing effect, it is again introduced into inlet manifold 20 and settles.
Preferably, exhaust main 40 is additionally provided with online oxygen content analyzer.
Embodiment 1
Coal reacts at inside reactor, generate thick raw coke oven gas (steam, tar steam, coal gas and finely-ground coke) and
Semicoke, the temperature of thick raw coke oven gas is about 450 DEG C.As it is shown in figure 1, thick raw coke oven gas enters inlet manifold 20 from house steward's air inlet 21
In, spread in inner manifold, form constant voltage.Raw coke oven gas enters in each air intake branch 30 from inlet manifold 20, enters filter chamber
After 11, raw coke oven gas spreads rapidly, and raw coke oven gas is under pressure to filtering layer internal flow, during flowing downward, and dust quilt
Intercepting inside filtering layer, raw coke oven gas enters in air cavity 125 by screen plate, imports exhaust main 40 by exhaust branch pipe 50
In.Go out housing 10 and enter temperature >=380 DEG C of the clean raw coke oven gas in exhaust main 40, exhaust main 40 is provided with the most oxygen-containing
Analyser, when oxygen content >=2%, needs to diffuse raw coke oven gas, and when oxygen content≤2%, raw coke oven gas is to changing product unit
Process, collect burnt oil and gas.
Not being diluted for coal gas, the blowback of cleaner unit uses and carries out blowback from the purified gas changing product unit, simultaneously for protecting
Card cleaner unit internal temperature equilibrium, uses blowback coal gas to carry out concurrent heating, keeps inner homogeneous.Before coal gas enters blowback arm 60, quilt
Being heated to 450 DEG C, gas pressure 4KPa, when cleaner unit inlet and outlet pressure difference is more than certain value, Open valve sequentially enters and removes
Air cavity 125 in dirt device, blowback coal gas forms certain pressure in air cavity 125, and then blowback coal gas passes through screen plate gas distribution to mistake
Filter chamber 11 carries out reverse gas cleaning, and after blowback, coal gas mixes with raw coke oven gas.
Embodiment 2
With the difference of embodiment 1, embodiment 2 is that the blowback of cleaner unit uses constant-pressure type to control, the most a certain group of filter element
When inlet outlet pressure differential is more than setting value, open corresponding blowback valve, carry out point blowing.
Embodiment 3
Embodiment 3 is when the temperature of raw coke oven gas is 500 DEG C with the difference of embodiment 2, the heating-up temperature of blowback coal gas
It it is 550 DEG C.
Embodiment 4
With the difference of embodiment 3, embodiment 4 is that the blowback of cleaner unit uses constant-pressure type to control, the most a certain group of filter element
When inlet outlet pressure differential is more than setting value, open corresponding blowback valve, carry out point blowing.
Seen from the above description, in the above-mentioned dust arrester that the present invention provides, inlet manifold 20 and air intake branch 30 are utilized
High temperature raw coke oven gas is passed through in the filter chamber 11 of housing 10 and carries out dedusting.Raw coke oven gas after dedusting passes through exhaust branch pipe 50 and aerofluxus
House steward 40 discharges.Owing to inlet manifold 20 is reducer pipe, and along the direction away from house steward's air inlet 21, the caliber of inlet manifold 20
It is gradually reduced so that high temperature raw coke oven gas close to constant voltage, and enters under pressure constant state and respectively filters in inlet manifold 20.This
Sample is just it can be avoided that there is bigger temperature difference in filter chamber 11 such that it is able to reduce the probability that tar separates out, it is ensured that equipment
Longtime running.
In addition to above beneficial effect, with the coal gas reverse gas cleaning after purification, nitrogen need not be consumed and (be added without outside gas
Body), do not change combustable gas concentration and calorific value.Compared to other cleaner units, under decision design, this device pressure drop the most very much not surpasses
Crossing 2.6kPa, typically in 1200～1600Pa, filter efficiency is high, keeps relatively low outlet dust concentration, approximately less than 30mg/
Nm3.This technical scheme simple in construction, operating cost is low, moving component is few, maintenance rate is low, it is adaptable to most high-temperature dust removals
Occasion, has the strongest feasibility, practicality and economy.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (15)
1. a dust arrester, it is characterised in that described dust arrester includes:
Housing (10), is provided with at least one filter chamber (11) in described housing (10), each described filter chamber (11) is upper all
It is provided with filter chamber's air inlet and filter chamber's air vent；
Inlet manifold (20), described inlet manifold (20) is provided with house steward's air inlet (21), and described inlet manifold (20) is for becoming
Footpath is managed, and along the direction away from described house steward's air inlet (21), the caliber of described inlet manifold (20) is gradually reduced；
At least one air intake branch (30), one end of described air intake branch (30) connects with described inlet manifold (20), the other end
Connect with corresponding described filter chamber air inlet；
Exhaust main (40)；And
At least one exhaust branch pipe (50), one end of described exhaust branch pipe (50) connects with described exhaust main (40), the other end
Connect with corresponding described filter chamber air vent.
Dust arrester the most according to claim 1, it is characterised in that described dust arrester includes multiple described filter chamber
(11), each described filter chamber (11) axially setting gradually along described housing (10), described filter chamber is provided with flood in (11)
Filter course (12).
Dust arrester the most according to claim 2, it is characterised in that described flood filter course (12) is wrapped the most successively
Include:
Packing layer；
Screen plate (123)；And
Bottom swash plate (124)；Shape between the sidewall of described bottom swash plate (124), described screen plate (123) and described housing (10)
Becoming air cavity (125), described bottom swash plate (124) is along described filter chamber aerofluxus the most close near one end of described filter chamber air inlet
One end of mouth is downward-sloping；
Wherein, described filter chamber air inlet is positioned at the top of described flood filter course (12), and described filter chamber air vent is with described
Air cavity (125) is connected.
Dust arrester the most according to claim 1, it is characterised in that described dust arrester includes multiple described filter chamber
(11), described inlet manifold (20) is stepped reducer pipe, and the reducer of described stepped reducer pipe and described filter chamber
(11) one_to_one corresponding.
Dust arrester the most according to any one of claim 1 to 4, it is characterised in that described dust arrester also includes:
Blowback house steward；
At least one blowback arm (60), is arranged with described exhaust branch pipe (50) one_to_one corresponding, the one of described blowback arm (60)
End connects with described blowback house steward, and the other end connects with corresponding described exhaust branch pipe (50).
Dust arrester the most according to claim 5, it is characterised in that described inlet manifold is additionally provided with semi-coke powder on (20)
Outlet (22).
Dust arrester the most according to claim 6, it is characterised in that described dust arrester also includes dust collecting box, institute
State dust collecting box and be positioned at the lower section of described semi-coke powder outlet (22).
8. the dust arrester stated according to claim 7, it is characterised in that be provided with level-sensing device on described dust collecting box.
9. according to the dust arrester according to any one of claim 6 to 8, it is characterised in that described dust arrester also includes valve
Body, described valve body includes:
First valve body (31), is arranged on described air intake branch (30)；
Second valve body (41), is arranged on described exhaust main (40), and by gas flow direction, described second valve body (41) position
Downstream in described exhaust branch pipe (50)；
3rd valve body (51), be arranged on described exhaust branch pipe (50) is positioned at described blowback arm (60) and described exhaust main
(40) on the pipeline section between；And
4th valve body (61), is arranged on described blowback arm (60).
Dust arrester the most according to claim 9, it is characterised in that described valve body is high-temperature ball valve, high temperature butterfly valve or height
Temperature gate valve.
11. dust arresters according to claim 1, it is characterised in that be provided with heat-resisting on the inwall of described housing (10)
Anticorrosion abrasive resistant paint layer.
12. dust arresters according to claim 11, it is characterised in that the outer surface of described housing (10) is provided with first
Heat-insulation layer.
13. dust arresters according to claim 12, it is characterised in that the outer surface of described inlet manifold (20) is provided with
Second heat-insulation layer, the outer surface of described air intake branch (30) is provided with the 3rd heat-insulation layer, the outer surface of described exhaust main (40)
Being provided with the 4th heat-insulation layer, the outer surface of described exhaust branch pipe (50) is provided with the 5th heat-insulation layer.
14. dust arresters according to claim 5, it is characterised in that the outer surface of described blowback house steward is provided with the 6th
Heat-insulation layer, the outer surface of described blowback arm (60) is provided with the 7th heat-insulation layer.
15. dust arresters according to claim 5, it is characterised in that described dust arrester also includes thermometer and pressure
Table, described thermometer and described Pressure gauge are arranged on described blowback house steward, and press the flow direction of gas, described thermometer
With the upstream that described Pressure gauge is respectively positioned on described blowback arm (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812895.8A CN106237736A (en) | 2016-09-09 | 2016-09-09 | Dust arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812895.8A CN106237736A (en) | 2016-09-09 | 2016-09-09 | Dust arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106237736A true CN106237736A (en) | 2016-12-21 |
Family
ID=57598668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610812895.8A Pending CN106237736A (en) | 2016-09-09 | 2016-09-09 | Dust arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106237736A (en) |
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| CN110064261A (en) * | 2019-06-08 | 2019-07-30 | 郭绍华 | It is a kind of processing high humility, high temperature, high-dust flue gas high-precision deduster |
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