CN107551630A - A kind of self-cleaning filter device and its technique applied to the processing of coking desulfurization liquid - Google Patents
A kind of self-cleaning filter device and its technique applied to the processing of coking desulfurization liquid Download PDFInfo
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- CN107551630A CN107551630A CN201710884269.4A CN201710884269A CN107551630A CN 107551630 A CN107551630 A CN 107551630A CN 201710884269 A CN201710884269 A CN 201710884269A CN 107551630 A CN107551630 A CN 107551630A
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- 239000007788 liquid Substances 0.000 title claims abstract description 118
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 34
- 230000023556 desulfurization Effects 0.000 title claims abstract description 34
- 238000004939 coking Methods 0.000 title claims abstract description 27
- 238000004140 cleaning Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 99
- 239000000463 material Substances 0.000 claims abstract description 64
- 239000002002 slurry Substances 0.000 claims abstract description 28
- 239000002893 slag Substances 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000011001 backwashing Methods 0.000 claims abstract description 15
- 230000007774 longterm Effects 0.000 claims abstract description 3
- 239000011162 core material Substances 0.000 claims description 48
- 238000007790 scraping Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 6
- 230000004907 flux Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 150000003839 salts Chemical group 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a kind of self-cleaning filter device applied to the processing of coking desulfurization liquid and its technique, self-cleaning filter device to include：At least one filtration barrel body；Several filter cores；Several filter residue scraper mechanisms；Material circulating system；Backwashing system；Slag charge tank, self-cleaning filtering technique comprise the following steps：(1) doctor solution is introduced in filtration barrel body and filtered；(2) slurry returns to lean liquid tank by material outlet and carries out circulating filtration again；(3) filter residue for being gathered in filter core inner surface is struck off by filter residue scraper mechanism；(4) part slag charge is directly discharged into slag charge tank by slag-drip opening；(5) filter core is backwashed by backwashing system after filter core long-term operation.The present invention solve traditional coking desulfurization liquor treating process filter core flux it is unstable, it is easy block, the technical problem that filtering accuracy is low, the cycle of operation is short, operation maintenance is complicated.
Description
Technical field
The present invention relates to a kind of self-cleaning filter device and its technique, and in particular to one kind is applied to coking desulfurization liquid and handled
Self-cleaning filter device and its technique.
Background technology
At present, the coke oven gas desulfurization generally use wet desulfurizing process of coal chemical industry, and in sweetening process, due to pair
Had in the generation doctor solution of reaction secondary salt generation, when secondary salt accumulation to a certain extent, desulfurized effect will be substantially reduced, therefore
A part of doctor solution must be discharged in production process, the doctor solution for being supplemented soft water or newly preparing.Under current environmental protection policy, row
The desulfurization waste liquor gone out need to the reuse again after secondary salt is extracted in processing, both at home and abroad with it is more be fractional crystallization salt extraction method, it
It is to carry out purification ＆ isolation using the difference in solubility of several inorganic salts, wherein, the solid matter such as suspension sulphur in coking desulfurization liquid
Generally use centrifuge instrument is separated, because material viscosity is big, suspension sulphur bubble content is high, causes equipment to be easy to damage, together
When centrifugation apparatus do not reach preferable separating effect yet, and then had a strong impact on the reliable and stable operation of system, limited coalification
The healthy and sustainable development of industrial and commercial bank's industry.Targetedly new and effective equipment for separating liquid from solid turns into coking desulfurization pendular ring with technique for exploitation
Protect a vital part in Treatment process development process.
The content of the invention
The present invention is in order to solve the above problems, and so as to provide, a kind of filtering accuracy is high, operating flexibility is big, for ease of maintenaince grasps
Make, the self-cleaning filter device and its technique that are applied to the processing of coking desulfurization liquid of safety and stability.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of self-cleaning filter device applied to the processing of coking desulfurization liquid, the self-cleaning filter device include：
At least one filtration barrel body, each filtration barrel body side are provided with material inlet, and each filtration barrel body opposite side is provided with
Purified liquor outlet, the bottom of each filtration barrel body are provided with material outlet and slag-drip opening；
Several filter cores, each filter core are correspondingly placed in a filtration barrel body, and by inside filtration barrel body
It is divided into clear liquid side and slurry side, the material outlet is located at slurry side, and the purified liquor outlet is located at clear liquid side；
Several filter residue scraper mechanisms, each filter residue scraper mechanism are correspondingly sealingly disposed in a filtration barrel body, and with
Filter core corresponding matching；
Material circulating system, the material circulating system connect with the material inlet and material outlet of each filtration barrel body respectively
Connect；
Backwashing system, purified liquor outlet of the backwashing system respectively with each filtration barrel body are connected；
Slag charge tank, slag-drip opening of the slag charge tank respectively with each filtration barrel body are connected.
In a preferred embodiment of the invention, when the filtration barrel body is multiple, filtration barrel body is arranged in parallel.
In a preferred embodiment of the invention, the filter core is asymmetric wedge-shaped net or asymmetric circular hole net,
The filter core material is metal or nonmetallic.
In a preferred embodiment of the invention, the filter residue scraper mechanism includes drive device, piston rod and scraping disc,
The piston rod packing is arranged in filtration barrel body, and the scraping disc is set on the piston rod, and is connect with the inner surface of filter core
Touch, the drive device is arranged on outside filtration barrel body, and is connected with piston rod.
In a preferred embodiment of the invention, the seal form between the piston rod and filtration barrel body is using bullet
Spring sealing ring seals or using packing seal or using magnetic seal.
In a preferred embodiment of the invention, the material circulating system include lean liquid tank, lean pump, inlet valve and
Circulating valve, the lean pump are connected with lean liquid tank and material inlet respectively by pipeline, the lean liquid tank by pipeline directly with
Material outlet is connected, and the inlet valve is arranged on the pipeline between lean pump and material inlet, and the circulating valve is arranged on poor
On pipeline between liquid bath and material outlet.
In a preferred embodiment of the invention, the backwashing system includes differential manometer, surge tank, Clear liquid tank, clear
Liquid valve and recoil valve, the surge tank are connected by pipeline with purified liquor outlet, pass through pipeline between the Clear liquid tank and surge tank
Connect, be respectively equipped with clear liquid valve and recoil valve on the pipeline between Clear liquid tank and surge tank, gas is connected with the recoil valve
Compressor, the differential manometer are connected with the pipeline on the pipeline and material inlet on purified liquor outlet respectively.
In a preferred embodiment of the invention, it is provided with residual cake valve between the slag charge tank and slag-drip opening and deslagging is pneumatic
Valve.
A kind of self-cleaning filtering technique applied to the processing of coking desulfurization liquid, it is characterised in that the self-cleaning filtering work
Skill comprises the following steps：
(1) the slurry side for introducing doctor solution in filtration barrel body by material inlet, in filtration barrel body under differential pressure action,
Clear liquid in doctor solution passes through the clear liquid side that filter core is entered in filtration barrel body, and purified liquor outlet is discharged；
(2) remaining slurry returns to lean liquid tank by material outlet and carries out circulating filtration again in filtration barrel body, until will
Clear liquid filtering in slurry is clean；
(3) filter residue for being gathered in filter core inner surface is struck off by filter residue scraper mechanism, and the filter residue struck off leads to slurry
Cross material circulating system and return to lean liquid tank, circulating filtration again can be carried out；
(4) when pressure difference or time reach setting value, residual cake valve is opened, part slag charge is directly discharged into slag by slag-drip opening
Batch can；
(5) filter core is backwashed by backwashing system after filter core long-term operation.
In a preferred embodiment of the invention, established and circulated by lean pump between lean liquid tank and filtration barrel body, followed
The ratio between circulation and clear liquid flow are 3~10:17, separation accuracy can reach 1 μm, and separative efficiency reaches more than 99%, and coking takes off
The solid content of sulphur liquid circulation slurry is between 30~50g/L.
The beneficial effects of the invention are as follows：
Of the invention and existing same device and method compare, and the present invention, which has, scrapes dish structure, is retained in filter process
It can be struck off in time by scraping disc in the filter residue of filter core inner surface, meanwhile, filter core can also be entered by crossing cleaner liquid
Row online backwashing is operated, it is ensured that filter material long period is stable to be used, and solves traditional coking desulfurization liquor treating process filter core flux
Unstable, easy blocking, the technical problem that filtering accuracy is low, the cycle of operation is short, operation maintenance is complicated.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the internal structure schematic diagram of filtration barrel body.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
Referring to Fig. 1 and Fig. 2, the self-cleaning filter device provided by the invention applied to the processing of coking desulfurization liquid, it includes
At least one filtration barrel body 100, several filter cores 200, several filter residue scraper mechanism, material circulating system, backwashes
System and slag charge tank 600.
The application can be filtered using single filtration barrel body 100, can also be carried out using multiple parallel connections of filtration barrel body 100
Filter specifically can according to the actual requirements depending on.
Material inlet 110 is provided with each side of filtration barrel body 100, opposite side is provided with purified liquor outlet 120, in each filtering
The bottom of cylinder 100 is provided with material outlet 130 and slag-drip opening 140.
Filter core 200 is provided with each filtration barrel body 100, filter core 200 is specifically longitudinally disposed, in filter core
About 200 respectively have a piece of dividing plate to be connected with filtration barrel body 100, and filter core 200 is sealed with dividing plate by mechanical seal or O-ring
Sealed etc. form, two independent sealed slurry sides 150 and clear liquid side 160 can will be so divided into inside filtration barrel body 100.
Slurry can pass through filter core 200 after the slurry side 150 of filtration barrel body 100 is introduced into by material inlet 110, slurry
Clear liquid in material then can be trapped in slurry side 150 through filter core 200 to clear liquid side 160, solid by filter core.
Material inlet 110 is located at slurry side 150, and purified liquor outlet 120 is located at clear liquid side 160, so passes through material inlet 110
The doctor solution of entrance can enter slurry side 150 first, and fill up slurry side 150 rapidly, and the clear liquid in doctor solution is in pressure
Clear liquid side 160 can be entered under effect by filter core 200, and the clear liquid in clear liquid side 160 can pass through purified liquor outlet
120 discharges.
In order to further improve filter effect, filter core 200 is specially asymmetric wedge-shaped net or asymmetric circular hole net, and
Material is metal or nonmetallic.
Filter residue scraper mechanism is provided with each filtration barrel body 100, filter residue scraper mechanism is to be used to will accumulate in filtering filter
The filter residue of the inner surface of core 200 strikes off, so as to ensure the filter effect of filter core 200.
Filter residue scraper mechanism includes drive device 310, piston rod 320 and scraping disc 330.
Piston rod 320 is sealingly disposed in filtration barrel body 100, seal form concretely using it is spring sealed circle sealing or
Using packing seal or using magnetic seal.
Drive device 310 is arranged on outside filtration barrel body 100, and it is connected with piston rod 320, and it is to be used to drive piston
Bar 320 is stretched.
Scraping disc 330, it is arranged on the bottom of piston rod 320, and it is contacted with the inner surface of filter core 200, works as drive
When the dynamic driving of device 310 piston rod 320 carries out flexible, it can carry out upper and lower displacement with piston rod 320, be carried out in scraping disc 330
The filter residue that the inner surface of filter core 200 can be will accumulate in during upper and lower displacement strikes off, so as to improve the filtering of filter core 200 effect
Fruit.
Material circulating system, it is filtered for the doctor solution of outside to be incorporated into each filter cylinder body 100, and
And circulated the doctor solution in each filtration barrel body 100, so as to carry out multiple circulating filtration to doctor solution, ensure desulfurization
Clear liquid filtering in liquid is clean.
Material circulating system includes lean liquid tank 410, lean pump 420, inlet valve 430 and circulating valve 440.
Lean liquid tank 410 is to be used to coking desulfurization liquid carrying out unified storage, lean pump 420 by pipeline respectively with lean liquid tank
410 and material inlet 110 connect, the doctor solution in lean liquid tank 410 can be incorporated into material inlet 110 by lean pump 420, so as to enter
Enter into filtration barrel body 100.
In addition, lean liquid tank 410 is also directly connected by pipeline with material outlet 130, so in filtration barrel body 100
Doctor solution can be also again returned in lean liquid tank 410 by material outlet 130, be incorporated into order to which lean pump 420 extracts again
In filtration barrel body 100, it is achieved thereby that multiple circulating filtration.
Inlet valve 430 is provided with pipeline between lean pump 420 and material inlet 110, inlet valve 430 is to be used to control
The conveying of doctor solution between lean pump 420 and material inlet 110.
Circulating valve 440 is provided with pipeline between lean liquid tank 410 and material outlet 130, circulating valve 440 is to be used to control
The conveying of doctor solution between material outlet 130 and lean liquid tank 410, when circulating valve 440 is closed, filtered in filtration barrel body 100
Desulfurization residue afterwards just not can return in lean liquid tank 410.
Because the application is to coordinate to filter doctor solution by the pressure difference in filtration barrel body 100 and filter core 200,
Without by other structures, so by material circulating system by doctor solution circulation introducing substantially increase filter efficiency and
Filter effect.
Slag charge tank 600, it is connected by pipeline with the slag-drip opening 140 of each filtration barrel body 100, in filtration barrel body 100
It can be drained into by the desulfurization residue of multiple circulating filtration by slag-drip opening 140 in slag charge tank 600 and carry out unified recovery.
Residual cake valve 610 and deslagging pneumatic operated valve 620 are provided between slag charge tank 600 and slag-drip opening 140, residual cake valve 610 is to use
In control slag charge tank 600 and slag-drip opening 140 between connection, and deslagging pneumatic operated valve 620 be by connecting external pneumatic device, from
And the desulfurization residue in filtration barrel body 100 is all drawn into slag charge tank 600, it is useless unnecessary in filtration barrel body 100 to ensure
Desulfurization residue, so as to not interfere with the filtering of follow-up doctor solution.
Backwashing system, it using the clear liquid after being filtered in filtration barrel body 100 to filter core 200 by directly being carried out instead
Rinse, so as to improve the filter effect of filter core 200.
Backwashing system includes differential manometer 510, surge tank 520, Clear liquid tank 530, clear liquid valve 540 and recoil valve 550.
Surge tank 520 is connected by pipeline with purified liquor outlet 120, and the clear liquid in clear liquid side 160 can be gone out by clear liquid
Mouth 120 is first flowed into surge tank 520 and tentatively stored.
Connected between Clear liquid tank 530 and surge tank 520 by pipeline, when the clear liquid in surge tank 520 is excessive, clear liquid can
It is incorporated into Clear liquid tank 530 by pipeline and is finally stored, clear liquid valve 540 and recoil valve 550 is respectively equipped with pipeline.
Clear liquid valve 540 can control the connection between Clear liquid tank 530 and surge tank 520, when clear liquid valve 540 is closed, buffering
Clear liquid in tank 520 can not be just flowed into Clear liquid tank 530.
Gas compressor is connected with recoil valve 550, when closing clear liquid valve 540, recoil valve 550 is opened, controls gas compression
When machine works, gas compressor can be entered compressed gas in surge tank 520 by pipeline, to the clear liquid in surge tank 520
Punching press is carried out, can be by the certain cavity rate of the clear liquid in surge tank 520 along between surge tank 520 and purified liquor outlet 120
Pipeline backtracking is backwashed to filter core 200 in filtration barrel body 100, and so, the application need not set
Other flushing mechanisms, by the way that backtracking recoils to filter core 200 again by the clear liquid after being filtered in filtration barrel body 100
Wash, greatly save developing cost and improve flush efficiency.
In addition, the liquid after being backwashed to filter core 200 can be flowed into the inner bottom part of filtration barrel body 100, material can be passed through
The circulatory system is filtered again, and the clear liquid of flushing is again separate out, to be reclaimed, can so to economize on resources, can also be passed through
Slag-drip opening 140 is expelled directly out.
Differential manometer 510, it is connected with the pipeline on the pipeline on purified liquor outlet 120 and material inlet 110 respectively, and it passes through
The pressure difference between purified liquor outlet 120 and material inlet 110 is shown, the filter effect of filter core 200 can be understood in real time, work as pressure
When difference reaches certain numerical value, then prove that the filter effect of filter filter core 200 is deteriorated, then need backwashing system to work.
Implementation based on such scheme, present invention also provides a kind of self-cleaning filtering applied to the processing of coking desulfurization liquid
Technique, it comprises the following steps：
(1) the slurry side 150 for introducing doctor solution in filtration barrel body 100 by material inlet 110, in filtration barrel body 100
Under interior differential pressure action, the clear liquid in doctor solution passes through the clear liquid side 160 that filter core 200 is entered in filtration barrel body 100, and clearly
The discharge of liquid outlet 120；
(2) remaining slurry is circulated throughout again by the return of material outlet 130 lean liquid tank 410 in filtration barrel body 100
Filter, until the clear liquid in slurry is filtered clean；
(3) filter residue for being gathered in the inner surface of filter core 200 is struck off by filter residue scraper mechanism, and the filter residue struck off is with slurry
Lean liquid tank 410 is returned to by material circulating system, circulating filtration again can be carried out；
(4) when pressure difference or time reach setting value, residual cake valve 610 is opened, part slag charge is direct by slag-drip opening 140
It is discharged into slag charge tank 600.
, it is necessary to close residual cake valve 610, deslagging pneumatic operated valve 620 and recoil valve 550 when material circulating system works.
And when needing deslagging, it is necessary to close lean pump 420, inlet valve 430, circulating valve 440 and recoil valve 550.
When backwashing is desired, it is necessary to close clear liquid valve 540, lean pump 420, inlet valve 430 and circulating valve 440 and deslagging
Valve 610, after flushing, lean pump 420, inlet valve 430 and circulating valve 440 or the row of unlatching can be opened according to actual conditions
Slag valve 610 and deslagging pneumatic operated valve 620.
In addition, the ratio between the circular flow of material circulating system and clear liquid flow are 3~10:17；Coking desulfurization liquid recycle slurry
The solid content of material is between 30~150g/L；Separation accuracy in filtration barrel body 100 can reach 1 μm, and separative efficiency reaches 99%
More than.
Based on the implementation of above-mentioned technique, present invention also provides following examples：
Embodiment 1
Circulating valve 440 is opened, clear liquid valve 540, starts lean pump 420, inlet valve 430 is adjusted, to material circulating system
Internal circulating load reaches 15m3/h, while adjusts circulating valve 440, and feed pressure reaches 0.18Mpa, and the pressure difference registration of differential manometer 510 is
54kpa, clear liquid flow are 3.3m3/h, stable system after 30 minutes sampling analysis, separative efficiency reach 99.6%.
Embodiment 2
Under the operation of embodiment 1, internal circulating load is adjusted to 20m3/h by regulation circulating valve 440, and other valves are motionless, feed pressure
For 0.31Mpa, pressure difference 68kpa, clear liquid flow 4.5m3/h, stable system after 30 minutes sampling analysis, separative efficiency reach
99.8%.
Embodiment 3
Under the operation of embodiment 1, internal circulating load is adjusted to 10m3/h by regulation circulating valve 440, and other valves are motionless, feed pressure
For 0.09Mpa, pressure difference 43kpa, clear liquid flow 2.1m3/h, stable system after 30 minutes sampling analysis, separative efficiency reach
99.8%.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
- A kind of 1. self-cleaning filter device applied to the processing of coking desulfurization liquid, it is characterised in that the self-cleaning filter device Including：At least one filtration barrel body, each filtration barrel body side are provided with material inlet, and each filtration barrel body opposite side is provided with clear liquid Outlet, the bottom of each filtration barrel body is provided with material outlet and slag-drip opening；Several filter cores, each filter core are correspondingly placed in a filtration barrel body, and will be divided into inside filtration barrel body Clear liquid side and slurry side, the material outlet are located at slurry side, and the purified liquor outlet is located at clear liquid side；Several filter residue scraper mechanisms, each filter residue scraper mechanism are correspondingly sealingly disposed in a filtration barrel body, and with filtering Filter core corresponding matching；Material circulating system, the material circulating system are connected with the material inlet and material outlet of each filtration barrel body respectively；Backwashing system, purified liquor outlet of the backwashing system respectively with each filtration barrel body are connected；Slag charge tank, slag-drip opening of the slag charge tank respectively with each filtration barrel body are connected.
- A kind of 2. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 1, it is characterised in that When the filtration barrel body is multiple, filtration barrel body is arranged in parallel.
- A kind of 3. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 1, it is characterised in that The filter core is asymmetric wedge-shaped net or asymmetric circular hole net, and the filter core material is metal or nonmetallic.
- A kind of 4. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 1, it is characterised in that The filter residue scraper mechanism includes drive device, piston rod and scraping disc, and the piston rod packing is arranged in filtration barrel body, described Scraping disc is set on the piston rod, and is contacted with the inner surface of filter core, and the drive device is arranged on outside filtration barrel body, and with Piston rod connects.
- A kind of 5. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 4, it is characterised in that Seal form between the piston rod and filtration barrel body is using spring sealed circle sealing or using packing seal or using magnetic Power seals.
- A kind of 6. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 1, it is characterised in that The material circulating system includes lean liquid tank, lean pump, inlet valve and circulating valve, the lean pump by pipeline respectively with lean solution Groove is connected with material inlet, and the lean liquid tank is directly connected by pipeline with material outlet, and the inlet valve is arranged on lean pump On pipeline between material inlet, the circulating valve is arranged on the pipeline between lean liquid tank and material outlet.
- A kind of 7. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 1, it is characterised in that The backwashing system includes differential manometer, surge tank, Clear liquid tank, clear liquid valve and recoil valve, and the surge tank is by pipeline and clearly Liquid outlet connection, is connected between the Clear liquid tank and surge tank by pipeline, is divided on the pipeline between Clear liquid tank and surge tank Not She You clear liquid valve and recoil valve, be connected with gas compressor on the recoil valve, the differential manometer respectively with purified liquor outlet Pipeline connects with the pipeline on material inlet.
- A kind of 8. self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 1, it is characterised in that Residual cake valve and deslagging pneumatic operated valve are provided between the slag charge tank and slag-drip opening.
- A kind of 9. self-cleaning filtering technique applied to the processing of coking desulfurization liquid, it is characterised in that the self-cleaning filtering technique Comprise the following steps：(1) the slurry side for introducing doctor solution in filtration barrel body by material inlet, in filtration barrel body under differential pressure action, desulfurization Clear liquid in liquid passes through the clear liquid side that filter core is entered in filtration barrel body, and purified liquor outlet is discharged；(2) remaining slurry returns to lean liquid tank by material outlet and carries out circulating filtration again in filtration barrel body, until by slurry Interior clear liquid filtering is clean；(3) filter residue for being gathered in filter core inner surface is struck off by filter residue scraper mechanism, and the filter residue struck off passes through thing with slurry Expect that the circulatory system returns to lean liquid tank, circulating filtration again can be carried out；(4) when pressure difference or time reach setting value, residual cake valve is opened, part slag charge is directly discharged into slag charge by slag-drip opening Tank；(5) filter core is backwashed by backwashing system after filter core long-term operation.
- 10. a kind of self-cleaning filter device applied to the processing of coking desulfurization liquid according to claim 9, its feature exist In, between lean liquid tank and filtration barrel body by lean pump establish circulate, the ratio between circular flow and clear liquid flow be 3~10:17, point Can reach 1 μm from precision, separative efficiency reaches more than 99%, the solid content of coking desulfurization liquid circulation slurry 30~150g/L it Between.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691421A (en) * | 2020-12-25 | 2021-04-23 | 单德福 | Back-washing solid-liquid separation device |
| CN113332814A (en) * | 2021-06-02 | 2021-09-03 | 张婕 | Garbage combustion flue gas purification device |
| CN113476929A (en) * | 2021-05-31 | 2021-10-08 | 成都思达能环保设备有限公司 | Backflushing device and backflushing method for filter element |
| CN114177733A (en) * | 2021-12-01 | 2022-03-15 | 武汉工程大学 | System for coal-bed gas drainage and gas production water-coal separation and water purification and control method |
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| CN113332814A (en) * | 2021-06-02 | 2021-09-03 | 张婕 | Garbage combustion flue gas purification device |
| CN114177733A (en) * | 2021-12-01 | 2022-03-15 | 武汉工程大学 | System for coal-bed gas drainage and gas production water-coal separation and water purification and control method |
| CN114177733B (en) * | 2021-12-01 | 2023-06-09 | 武汉工程大学 | System for separating coal and water for coal bed gas drainage and gas production and purifying water and control method |
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Application publication date: 20180109 |