CN105126429B - Residual oil backwashing filtering system and filtering method - Google Patents
Residual oil backwashing filtering system and filtering method Download PDFInfo
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- CN105126429B CN105126429B CN201510437502.5A CN201510437502A CN105126429B CN 105126429 B CN105126429 B CN 105126429B CN 201510437502 A CN201510437502 A CN 201510437502A CN 105126429 B CN105126429 B CN 105126429B
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- residual oil
- filter
- displacement liquid
- backwash
- efferent duct
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- 238000001914 filtration Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 18
- 238000011001 backwashing Methods 0.000 title abstract 9
- 238000011010 flushing procedure Methods 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims description 96
- 239000007788 liquid Substances 0.000 claims description 96
- 238000007599 discharging Methods 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000007654 immersion Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000010025 steaming Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 239000012065 filter cake Substances 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000011086 high cleaning Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
The invention discloses a residual oil backwashing filter system and a filtering scheme, wherein filter units consisting of a plurality of rows of backwashing filters are arranged in parallel, residual oil in the backwashing filters is replaced by a tail oil replacement technology, tail oil firstly passes through a filter cake and is collected into a flushing oil tank, the filter cake is softened, the viscosity is reduced, impurities in the tail oil are removed, particles are prevented from reversely blocking a filter pipe during backwashing, the backwashing effect is improved, the continuous long-period operation of the filter is ensured by adopting an one-by-one shutdown and off-line backwashing mechanism, and the residual oil backwashing filter system with good backwashing effect and high cleaning and filtering effect is provided.
Description
Technical field
The present invention relates to a kind of filtration system, more specifically, it relates to a kind of residual oil back-flushing filtering system and filtering
Method.
Background technology
Backwash filter, it is a kind of impurity directly intercepted using filter screen in water, removes water body recovery technology, particulate matter,
Reduce turbidity, purify water, reduce system dirt, bacterium algae, corrosion etc. and produce, with purify water and the system other equipment of protection just
The precision equipment often to work.Water enters self-cleaning filter body by water inlet, due to intellectuality（PLC、PAC）Design, system
Can automatic identification impurity deposition degree, give blowdown valve signal automatic pollution discharge.
At present, it is automatically anti-that a kind of acid water is disclosed in Application No. CN201310029321.X Chinese invention patent
Flush filter, including controller and the medium input pipe, displacement liquid input pipe and the medium efferent duct that are fixedly mounted on support,
Multiple filter cylinders are installed in parallel between medium input pipe and medium efferent duct, charging of being connected between filter cylinder entrance point and medium input pipe
Inlet valve, feed outlet port valve of being connected between cartridge outlet end and medium efferent duct, between displacement liquid input pipe and filter cylinder entrance point
Series connection displacement liquid inlet valve, feed entrance valve and displacement liquid inlet valve are in parallel, and cartridge outlet end is connected by displacement liquid outlet valve
Connect integrated pipe, the both ends of integrated pipe set displacement liquid outlet main valve and backwash liquor entrance main valve respectively, displacement liquid outlet valve and enter
Material outlet valve is in parallel, and filter cylinder entrance point connects blow-off pipe by backwash blowoff valve, and backwash blowoff valve and feed entrance valve phase are simultaneously
Connection.
But the backwash filter structure in above-mentioned patent apply residual oil filtering among when, due to residual oil filter after can not
Rinsed using water, and the viscosity of residual oil is high, in general developing result is poor, during backwash filter, easily causes
Grain reversely blocks chimney filter.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of backwash effect it is good, cleaning filtering
The high residual oil back-flushing filtering system of effect.
To achieve the above object, the invention provides following technical scheme：A kind of residual oil back-flushing filtering system, including it is anti-
Flush filter, charging aperture and discharging opening is provided with the backwash filter, the backwash filter first line of a couplet is connected to slag
Oily input pipe, residual oil efferent duct, displacement liquid input pipe, displacement liquid efferent duct, heat tracing medium input pipe and heat tracing medium efferent duct,
The residual oil input pipe, displacement liquid input pipe and heat tracing medium efferent duct are connected on the charging aperture of backwash filter, described
Residual oil efferent duct, displacement liquid efferent duct and heat tracing medium input pipe are connected on the discharging opening of backwash filter, the charging
Control valve is both provided with mouth, discharging opening, residual oil input pipe, residual oil efferent duct, displacement liquid input pipe and displacement liquid efferent duct, its
In：The displacement liquid efferent duct first line of a couplet is connected to flushing oil tank, and the upper end for rinsing oil tank is connected with air discharge duct and pressure
Pipe.
The present invention is further arranged to：The pressure pipe is arranged to nitrogen pressure solenoid.
The present invention is further arranged to：The displacement liquid efferent duct is connected to the middle part of the flushing oil tank.
The present invention is further arranged to：The bottom connection for rinsing oil tank has backwash tube, the backwash tube connection
Rinse oil tank and discharging opening.
The present invention is further arranged to：The residual oil efferent duct first line of a couplet is connected to steam input pipe.
The present invention is further arranged to：The displacement liquid is arranged to tail oil.
By using above-mentioned technical proposal, using oil tank storage displacement liquid is rinsed, further soften filter cake, reduce residual oil
Viscosity, and displacement liquid is pressurizeed by pressure pipe, the displacement liquid after pressurization enters in backwash filter from backwash tube to be carried out
Backwash, significantly improves backwash effect, and by the separately positioned storage of backwash tube and displacement liquid efferent duct and
Backwash process can be carried out simultaneously, effectively improve backwash efficiency, while the molecular link of nitrogen is stable, avoids causing displacement liquid
Chemical reaction.Line replacement is entered to the residual oil in backwash filter by tail oil replacement technique, and tail oil is first passed through into filter cake, is received
For collection to oil tank is rinsed, softening filter cake, which reduces, contains viscosity, and eliminates the impurity in tail oil, avoids the particle in backwash anti-
To chimney filter is blocked, backwash effect is improved.
Present invention also offers a kind of application method of the good residual oil back-flushing filtering system of cleaning effect.
A kind of application method of residual oil back-flushing filtering system, wherein:
A, residual oil filters from residual oil input pipe into backwash filter；
B, after the pressure in backwash filter reaches preset value, closed in residual oil input pipe, displacement liquid input pipe is beaten
Open, displacement liquid enters backwash filter from displacement liquid input pipe；
C, go out residual oil according to the feed liquor rate calculations of the capacity of back-flushing filter, displacement liquid all to arrange from backwash filter
The time gone out, after reaching the time, residual oil efferent duct is closed, and displacement liquid efferent duct, air discharge duct are opened, and displacement liquid enters punching
Oil-washing tank；
D, after rinsing the full displacement liquid of oil tank collection, each control valve is closed, displacement liquid immersion backwash filter；
E, air discharge duct is closed, oil tank and backwash filter rinse in UNICOM, open pressure pipe, charging aperture, to rinsing
Displacement liquid in oil tank carries out pressurization recoil.
The present invention is further arranged to：Some backwash filters are arranged side by side as one group of filter element, some groups of filterings
Unit is set up in parallel to be connected to and rinsed on oil tank.
The present invention is further arranged to：Wherein a row filter element it will first be backwashed offline, this row filter element is anti-
Put into normal filtration after the completion of flushing to use, switching next column filter element is backwashed, until whole filter elements recoil
Wash into.
The present invention is further arranged to：The backwash filter is using, in backwash process, defeated in heat tracing medium tube
Enter heat tracing medium to heat the material in backwash filter.
By using above-mentioned technical proposal, by the use of tail oil as displacement liquid, and replaced by tail oil, soaked, recoil of pressurizeing
Wash, effective backwash cleaning is carried out to the filter cake in backwash filter, forms and backwashes by using multiple row filter element
Filtration system, it ensure that backwash filter continuously runs longer cycle, filter efficiency significantly improves.
Brief description of the drawings
Fig. 1 is the structural representation of residual oil back-flushing filtering system embodiment of the present invention；
Fig. 2 is the front schematic view of single group backwash filter in residual oil back-flushing filtering system embodiment of the present invention；
Fig. 3 is the side schematic view of single group backwash filter in residual oil back-flushing filtering system embodiment of the present invention.
Description of reference numerals：1st, frame；2nd, backwash filter；3rd, charging aperture；4th, discharging opening；5th, residual oil input pipe；6、
Residual oil efferent duct；7th, displacement liquid input pipe；8th, displacement liquid efferent duct；9th, control valve；10th, oil tank is rinsed；11st, air discharge duct；
12nd, nitrogen pressure solenoid；13rd, sump oil efferent duct；14th, steam input pipe；15th, control system；16th, pressure gauge connection；17th, pressure difference becomes
Send device interface；18th, heat tracing medium input pipe；19th, heat tracing medium efferent duct；20th, backwash tube.
Embodiment
Residual oil back-flushing filtering system of the present invention and filtration method embodiment are described further referring to figs. 1 to Fig. 3.
Embodiment one：Referring to Figure of description 1 to 3, a kind of residual oil back-flushing filtering system, including backwash filter 2,
It is one group generally to set 3 backwash filters 2, is arranged on side by side in frame 1, be provided with the backwash filter 2 into
Material mouth 3 and discharging opening 4, coupling between charging aperture 3 and discharging opening 4 has pressure gauge, as shown in Figure of description 2, Ke Yi
Differential pressure transmitter interface 17 is opened up on residual oil input pipe 5, pressure gauge connection 16 is opened up on residual oil delivery outlet 6, by this two
Pressure gauge is connected on individual interface, so as to measure the pressure differential between charging aperture 3 and discharging opening 4, so as to judge backwash filter
Filter network state in device 2.
The first line of a couplet of backwash filter 2 is connected to residual oil input pipe 5, residual oil efferent duct 6, displacement liquid input pipe 7, displacement liquid
Efferent duct 8, heat tracing medium input pipe 18 and heat tracing medium efferent duct 19, the residual oil input pipe 5 and displacement liquid input pipe 7 connect
On the charging aperture 3 of backwash filter 2, the residual oil efferent duct 6 and displacement liquid efferent duct 8 are connected to backwash filter 2
Discharging opening 4 on, the heat tracing medium input pipe 18 is located in discharging opening 4, the heat tracing medium efferent duct 19 be located in into
In material mouth 3, the charging aperture 3, residual oil input pipe 5, residual oil efferent duct 6, displacement liquid input pipe 7, displacement liquid efferent duct 8, heat tracing
Control valve 9 is provided with heat tracing medium input pipe 18, heat tracing medium efferent duct 19, the control valve 9 is preferably arranged to magnetic valve,
By the connection control system 15 in frame, the numerical value in pressure gauge is sent to control system 15, is set in the control system 15
PLC is equipped with, the switch of magnetic valve is controlled by control system 15, so as to play the effect for automatically controlling the backwash filter
Fruit.Wherein：The first line of a couplet of displacement liquid efferent duct 8, which is connected to, rinses oil tank 10, and the upper end for rinsing oil tank 10 is connected with air row
Outlet pipe 11 and nitrogen pressure solenoid 12.Referring to Figure of description 2, sump oil efferent duct 13 is also associated with the right-hand member of residual oil input pipe 5,
Displacement liquid is discharged after backwash from sump oil efferent duct 13.Effectively displacement liquid is avoided to pollute other pipelines.
The principle of the present embodiment one is：After pressure value in backwash filter 2 exceedes preset value, residual oil input pipe
5 are closed, and displacement liquid input pipe 7 is opened, to inputting the residual oil in displacement liquid displacement backwash filter 2 in backwash filter 2,
Residual oil in backwash filter 2 replaces is discharged from residual oil efferent duct 6, and residual oil efferent duct 6 is closed afterwards, displacement liquid efferent duct
8 open, and displacement liquid stores displacement liquid full of oil tank 10 is rinsed, using oil tank 10 is rinsed, and by forcing pipe to displacement therein
Liquid is pressurizeed, and horizontal high voltage backwash is entered to backwash filter 2, the residual oil impurity in backwash filter 2 is carried out effective clear
To wash, cleaning efficiency is significantly improved, and the screen pack of backwash filter 2 is rinsed by displacement liquid, and before rinsing first
Backwash filter 2 is soaked into a period of time, so as to reduce the viscosity of residual oil in backwash filter 2, so as to greatly carry
The high backwash cleaning effect of this backwash filter 2, and in filter process, be situated between by heat tracing medium input pipe 18 and heat tracing
Heat tracing medium is circulated in matter efferent duct 19, to backwash filter, its residual oil in 2 heats, and reduces the viscosity of residual oil,
So as to improve its filter effect.
Embodiment two：Referring to Figure of description 1 to 3, a kind of residual oil back-flushing filtering system, including backwash filter 2,
It is one group generally to set 3 backwash filters 2, is arranged on side by side in frame 1, be provided with the backwash filter 2 into
Material mouth 3 and discharging opening 4, coupling between charging aperture 3 and discharging opening 4 has pressure gauge, as shown in Figure of description 2, Ke Yi
Differential pressure transmitter interface 17 is opened up on residual oil input pipe 5, pressure gauge connection 16 is opened up on residual oil delivery outlet 6, by this two
Pressure gauge is connected on individual interface, so as to measure the pressure differential between charging aperture 3 and discharging opening 4, so as to judge backwash filter
Filter network state in device 2.
The first line of a couplet of backwash filter 2 is connected to residual oil input pipe 5, residual oil efferent duct 6, displacement liquid input pipe 7, displacement liquid
Efferent duct 8, heat tracing medium input pipe 18 and heat tracing medium efferent duct 19, the residual oil input pipe 5 and displacement liquid input pipe 7 connect
On the charging aperture 3 of backwash filter 2, the residual oil efferent duct 6 and displacement liquid efferent duct 8 are connected to backwash filter 2
Discharging opening 4 on, the heat tracing medium input pipe 18 is located in discharging opening 4, the heat tracing medium efferent duct 19 be located in into
In material mouth 3, the charging aperture 3, residual oil input pipe 5, residual oil efferent duct 6, displacement liquid input pipe 7, displacement liquid efferent duct 8, heat tracing
Control valve 9 is provided with heat tracing medium input pipe 18, heat tracing medium efferent duct 19, the control valve 9 is preferably arranged to magnetic valve,
By the connection control system 15 in frame, the numerical value in pressure gauge is sent to control system 15, is set in the control system 15
PLC is equipped with, the switch of magnetic valve is controlled by control system 15, so as to play the effect for automatically controlling the backwash filter
Fruit.Wherein：The first line of a couplet of displacement liquid efferent duct 8, which is connected to, rinses oil tank 10, and the upper end for rinsing oil tank 10 is connected with air row
Outlet pipe 11 and nitrogen pressure solenoid 12.Referring to Figure of description 2, sump oil efferent duct 13 is also associated with the right-hand member of residual oil input pipe 5,
Displacement liquid is discharged after backwash from sump oil efferent duct 13.Effectively displacement liquid is avoided to pollute other pipelines.
The displacement liquid efferent duct 8 is connected to the middle part of the flushing oil tank 10.Prevent the displacement liquid rinsed in oil tank 10
Backflow.The bottom connection for rinsing oil tank 10 has backwash tube 20, and oil tank 10 and discharging are rinsed in the connection of backwash tube 20
Mouth 4.The pressure for making to input in nitrogen pressure solenoid 12 is concentrated on backwash tube 20, makes the pressure utilization rate of backwash tube 20 carry
It is high.The first line of a couplet of residual oil efferent duct 6 is connected to steam input pipe.The steam pressure 1MPa of the steam input pipe.
In the present embodiment two, displacement liquid is stored using oil tank 10 is rinsed, further softens filter cake, reduces residual oil and stick
Degree, and displacement liquid is pressurizeed by pressure pipe 12, the displacement liquid after pressurization enters in backwash filter 2 from backwash tube 20
Row backwash, significantly improves backwash effect, and deposit by backwash tube 20 and the separately positioned of displacement liquid efferent duct 8
Storage can be carried out simultaneously with backwash process, effectively improve backwash efficiency, while the molecular link of nitrogen is stable, avoids causing displacement
The chemical reaction of liquid.The steam pressure 1MPa of the steam input pipe 14.Carried out thoroughly when going into operation in equipment, disable, reloading
Clean.
The application method of residual oil back-flushing filtering system in the present invention, wherein:Some backwash filters 2 are arranged side by side
For one group of filter element, some groups of filter elements are set up in parallel to be connected to and rinsed on oil tank 10, first will a wherein row filter element
Backwashed offline, specific counter-flushing process is as follows：
A, residual oil filters from residual oil input pipe 5 into backwash filter 2；
B, after the pressure in backwash filter 2 reaches preset value, closed in residual oil input pipe 5, displacement liquid input pipe 7
Open, displacement liquid enters backwash filter 2 from displacement liquid input pipe 7；
C, residual oil is gone out from the whole of backwash filter 2 according to the feed liquor rate calculations of the capacity of back-flushing filter, displacement liquid
The time of discharge, after reaching the time, residual oil efferent duct 6 is closed, and displacement liquid efferent duct 8, air discharge duct 11 are opened, displacement liquid
Into flushing oil tank 10；
D, after rinsing the full displacement liquid of oil tank collection, each control valve 9 is closed, and displacement liquid immersion backwash filter 21 ~ 2 is small
When；
E, air discharge duct 11 is closed, oil tank 10 and backwash filter 2 rinse in UNICOM, open pressure pipe 12, charging aperture
3, high pressure nitrogen is inputted in the pressure pipe 12, and the displacement liquid in the oil-washing tank 10 that liquidates carries out pressurization recoil.
Normal filtration is put into after the completion of the backwash of this row filter element to use, switching next column filter element is recoiled
Wash, until the backwash of whole filter elements is completed.
The backwash filter 2 is using, in backwash process, heat tracing medium input pipe 18, heat tracing medium efferent duct
Input heat tracing medium in 19 to heat the material in backwash filter 2, heating-up temperature is 300 DEG C.
By the use of tail oil as displacement liquid, and replaced by tail oil, soaked, pressurized backwash, in backwash filter 2
Filter cake carries out effective backwash cleaning, forms back-flushing filtering system by using multiple row filter element, ensure that backwash
Filter 2 continuously runs longer cycle, and filter efficiency significantly improves.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all design structures in the present invention
Within think of, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (9)
1. a kind of residual oil back-flushing filtering system, including backwash filter, charging aperture is provided with the backwash filter
And discharging opening, it is defeated that the backwash filter first line of a couplet is connected to residual oil input pipe, residual oil efferent duct, displacement liquid input pipe, displacement liquid
Outlet pipe, heat tracing medium input pipe and heat tracing medium efferent duct, the residual oil input pipe, displacement liquid input pipe and the output of heat tracing medium
Pipe is connected on the charging aperture of backwash filter, and the residual oil efferent duct, displacement liquid efferent duct and heat tracing medium input pipe connect
It is connected on the discharging opening of backwash filter, the charging aperture, discharging opening, residual oil input pipe, residual oil efferent duct, displacement liquid input
Control valve is both provided with pipe and displacement liquid efferent duct, it is characterised in that：The displacement liquid efferent duct first line of a couplet is connected to flushing oil tank,
The upper end for rinsing oil tank is connected with air discharge duct and pressure pipe, and displacement liquid is pressurizeed by pressure pipe, putting after pressurization
Backwashed during liquid is changed from backwash tube into backwash filter, sump oil output is also associated with the right-hand member of residual oil input pipe
Pipe, displacement liquid are discharged after backwash from sump oil efferent duct, and the bottom connection for rinsing oil tank has backwash tube, described
Oil tank and discharging opening are rinsed in backwash tube connection.
2. residual oil back-flushing filtering system according to claim 1, it is characterized in that：The pressure pipe is arranged to nitrogen pressure
Pipe.
3. residual oil back-flushing filtering system according to claim 2, it is characterized in that：The displacement liquid efferent duct is connected to institute
State the middle part for rinsing oil tank.
4. residual oil back-flushing filtering system according to claim 3, it is characterized in that：The residual oil efferent duct first line of a couplet is connected to steaming
Vapour input pipe.
5. residual oil back-flushing filtering system according to claim 4, it is characterized in that：The displacement liquid is arranged to tail oil.
A kind of 6. application method of residual oil back-flushing filtering system as claimed in claim 1, it is characterised in that:
A, residual oil filters from residual oil input pipe into backwash filter；
B, after the pressure in backwash filter reaches preset value, residual oil input pipe is closed, and displacement liquid input pipe is opened, displacement
Liquid enters backwash filter from displacement liquid input pipe；
C, go out what residual oil was all discharged from backwash filter according to the feed liquor rate calculations of the capacity of back-flushing filter, displacement liquid
Time, after reaching the time, residual oil efferent duct is closed, and displacement liquid efferent duct, air discharge duct are opened, and displacement liquid enters flushing oil
Tank；
D, after rinsing the full displacement liquid of oil tank collection, each control valve is closed, displacement liquid immersion backwash filter；
E, air discharge duct is closed, oil tank and backwash filter rinse in UNICOM, open pressure pipe, charging aperture, liquidate oil-washing tank
In displacement liquid carry out pressurization recoil.
7. the application method of residual oil back-flushing filtering system according to claim 6, it is characterised in that:It is some backwashed
Filter is arranged side by side to be set up in parallel to be connected to and rinses on oil tank for one group of filter element, some groups of filter elements.
8. the application method of residual oil back-flushing filtering system according to claim 7, it is characterised in that:First will wherein one row
Filter element is backwashed offline, and putting into normal filtration after the completion of the backwash of this row filter element uses, and switches next column mistake
Filter unit is backwashed, until the backwash of whole filter elements is completed.
9. the application method of residual oil back-flushing filtering system according to claim 8, it is characterised in that:It is described backwashed
Filter is using, in backwash process, heat tracing medium is inputted in heat tracing medium tube the material in backwash filter is heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510437502.5A CN105126429B (en) | 2015-07-23 | 2015-07-23 | Residual oil backwashing filtering system and filtering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510437502.5A CN105126429B (en) | 2015-07-23 | 2015-07-23 | Residual oil backwashing filtering system and filtering method |
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| Publication Number | Publication Date |
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| CN105126429A CN105126429A (en) | 2015-12-09 |
| CN105126429B true CN105126429B (en) | 2017-11-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112760124A (en) * | 2019-10-21 | 2021-05-07 | 中国石油天然气股份有限公司 | Silt removing system and method |
| CN111534322B (en) * | 2020-04-21 | 2022-04-01 | 安泰科技股份有限公司 | Purification device and purification method for raw materials for producing needle coke |
| CN115090018B (en) * | 2022-06-30 | 2023-06-23 | 重庆海浦洛自动化科技有限公司 | Back flushing filtering method |
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|---|---|---|---|---|
| JPH0549823A (en) * | 1991-08-08 | 1993-03-02 | Matsushita Electric Ind Co Ltd | Equipment for washing filter medium of filter |
| CN1401405A (en) * | 2002-09-27 | 2003-03-12 | 安泰科技股份有限公司 | Fuel liquid backflush cleaning filter device and cleaning method |
| CN102500150A (en) * | 2011-11-29 | 2012-06-20 | 温州菲德石化科技有限公司 | Automatic back-washing filter for paraffin |
| CN202654776U (en) * | 2012-05-09 | 2013-01-09 | 中节能六合天融环保科技有限公司 | Heat-insulating filter with metal powder sintered filter element for filtering magnesium sulphate saturated solution |
| CN103768852A (en) * | 2014-01-20 | 2014-05-07 | 中山龙净过滤设备有限公司 | Backwashing filter |
| CN204815874U (en) * | 2015-07-23 | 2015-12-02 | 温州菲德石化科技有限公司 | Automatic back-flushing filtering system for residual oil |
-
2015
- 2015-07-23 CN CN201510437502.5A patent/CN105126429B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0549823A (en) * | 1991-08-08 | 1993-03-02 | Matsushita Electric Ind Co Ltd | Equipment for washing filter medium of filter |
| CN1401405A (en) * | 2002-09-27 | 2003-03-12 | 安泰科技股份有限公司 | Fuel liquid backflush cleaning filter device and cleaning method |
| CN102500150A (en) * | 2011-11-29 | 2012-06-20 | 温州菲德石化科技有限公司 | Automatic back-washing filter for paraffin |
| CN202654776U (en) * | 2012-05-09 | 2013-01-09 | 中节能六合天融环保科技有限公司 | Heat-insulating filter with metal powder sintered filter element for filtering magnesium sulphate saturated solution |
| CN103768852A (en) * | 2014-01-20 | 2014-05-07 | 中山龙净过滤设备有限公司 | Backwashing filter |
| CN204815874U (en) * | 2015-07-23 | 2015-12-02 | 温州菲德石化科技有限公司 | Automatic back-flushing filtering system for residual oil |
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| CN105126429A (en) | 2015-12-09 |
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