CN105498325A - Back-flush type filtering kettle for needle tar production - Google Patents
Back-flush type filtering kettle for needle tar production Download PDFInfo
- Publication number
- CN105498325A CN105498325A CN201610017561.1A CN201610017561A CN105498325A CN 105498325 A CN105498325 A CN 105498325A CN 201610017561 A CN201610017561 A CN 201610017561A CN 105498325 A CN105498325 A CN 105498325A
- Authority
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- China
- Prior art keywords
- tar
- kettle
- needle
- filter screen
- still
- 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.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 28
- 238000011010 flushing procedure Methods 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 26
- 239000011331 needle coke Substances 0.000 claims description 23
- 239000010802 sludge Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000011269 tar Substances 0.000 description 28
- 239000002994 raw material Substances 0.000 description 11
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000011280 coal tar Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 239000011311 coal-based needle coke Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000004533 oil dispersion Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
- B01D29/72—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
- B01D29/865—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers by vibration of the liquid
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/09—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by filtration
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1037—Hydrocarbon fractions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention belongs to the field of needle tar deep processing and particularly relates to a back-flush type filtering kettle for needle tar production. A tar inlet (2) of the filtering kettle is formed in the top of a kettle body (1), a filter residue outlet (5) is formed in the middle of the kettle body (1), a needle tar outlet (11) is formed in the bottom of the kettle body (1), the tar inlet (2) of the filtering kettle extends into the kettle body (1) and is structured into a spray type tar distributor (4), a connection buckle A (7-1) and a connection buckle B (7-2) are arranged at the positions, in the middle, of the inner wall of the kettle body (1) and used for being connected with a flushing cover (6) which can be placed therein through the filter residue outlet (5), a filter screen (9) is arranged below the filter residue outlet (5) inside the kettle body (1), ultrasonic modules (8) are arranged above and below the filter screen (9), and a washing inlet A (10-1) and a washing inlet B (10-2) are formed in the two sides of the needle tar outlet (11). According to the back-flush type filtering kettle, petroleum resources are utilized sufficiently, the problem that the filter screen is difficult to maintain is solved, the service life of the filter screen is prolonged, and the excellent filtering effect is achieved.
Description
Technical field
The invention belongs to needle coke field of deep, be specifically related to a kind of back flush type needle-like Tar production and filter still.
Background technology
Needle coke is the fine quality greatly developed in carbon material, its outward appearance is silver gray, has the porosu solid of metallic luster, its structure has the texture that obviously flows, hole greatly and less and slightly ovalize, particle has larger length-width ratio, move towards just like the texture of threadiness or needle-like, that touches has lubrication sense, is the raw material producing the high-end carbon products such as ultra-high power graphite electrode, extraordinary carbon material, Carbon fiber and carbon fiber composites.According to the difference of raw materials for production, needle coke can be divided into oil system needle coke and coal-based needle coke two kinds.The output of current electric steel and refining furnace steel is in ascendant trend year by year, very considerable to the demand of high power and ultra high power graphite electrode, also more and more higher to the requirement of needle-shape coke raw material.
Needle coke process units comprises three unit: pretreatment of raw material, coking, calcining.Pretreatment of raw material is mainly removed coal tar, coal tar pitch or is returned the objectionable impurities such as the quinoline insolubles (QI) of joining in the raw materials such as pitch, and the method that pretreatment of raw material often adopts has: solvent treatment method, filtration method, centrifugal separation, hydrogenation method, upgrading method, solvent-hydrogenation method.Wherein filtration method gets quinoline insolubles by after coal tar or coal tar asphalt heating through filtering, and obtain product purification pitch, belong to simple physical method, its advantage is that technics comparing is simple, and technological parameter easily controls.Filter the material processing unit nucleus equipment of still as filtration method, direct motion and the long-term operation problem directly affecting material processing unit whether rational in infrastructure of its equipment.The structure also existing defects of current filtration still: single using filter screen as filter medium time, owing to limiting by considering netting index object, be difficult to the objectionable impurities such as quinoline insolubles in raw material to eliminate; During with filter screen and filter aid for filter medium, there is again the reduction of service life due to filtration material layer unbalance stress and affect the problem of purification of raw materials effect, and filter screen in use, due to the impact of granule foreign, easily cause filter net jam not smooth, filter efficiency is low, and filter screen is difficult to maintenance and the problem such as service life is short.
Summary of the invention
The present invention is directed to needle coke filter plant and be difficult to present situations such as being eliminated by the objectionable impurities such as quinoline insolubles in raw material, filter screen is difficult to maintenance, service life is short, there is provided a kind of back flush type needle-like Tar production to filter still, solve filter screen and be difficult to the problems such as maintenance, filter screen service life short, poor filtration effect.
The solution of the present invention is by realizing like this: still is filtered in a kind of back flush type needle-like Tar production, this filtration still comprises kettle 1, tar entrance 2, sludge outlet 5, needle coke oil export 11, tar entrance 2 is positioned at the top of kettle 1, sludge outlet 5 is positioned at the middle part of kettle 1, needle coke oil export 11 is positioned at the bottom of kettle 1, it is spray-type tar distributor 4 that the tar entrance 2 of this filtration still stretches into kettle 1 inner structure, inwall in the middle part of kettle 1 is provided with junction button A7-1 and junction button B7-2, junction button A7-1 and junction button B7-2 are for being connected the flushing cover 6 can inserted from sludge outlet 5, in kettle 1, the below of sludge outlet 5 is provided with filter screen 9, the upper-lower position of filter screen 9 is provided with ultrasonic module 8, washings import A10-1 and washings import B10-2 is provided with in needle coke oil export 11 both sides.
As further restriction of the present invention, the quantity of described ultrasonic module 8 is 1 ~ 4.The power bracket of ultrasonic module is 100 ~ 250Hz.
As further restriction of the present invention, described junction button A7-1 and junction button B7-2 is notch, inserts when rinsing cover 6 and firmly can block to pressing down, and when taking out flushing cover 6, left and right twisting can be deviate from.
As further restriction of the present invention, described tar entrance 2 is positioned at kettle 1 outside and is provided with tar inlet valve 3; Described washings import A10-1 and washings import B10-2 is provided with valve.
The technical basis that the present invention realizes and good result are: when filtration still is in filter process, filter screen be subject to granular substance blocking or colloid blocking more serious time, ultrasonic module 8 can be started, under the effect of ultrasonic vibration, slurry oil blocking on filter screen is eased, make filtration still improve the filter efficiency of needle coke, the filtration time of 1 ton of slurry oil, by 18 original ~ 22h, is reduced to 12 ~ 16h simultaneously, when filtering still and needing maintenance in the later stage, from the flushing cover 6 that sludge outlet 5 is inserted, close needle coke oil export 11, after forming hermetically-sealed construction, open washings import A10-1 and washings import B10-2 valve pours cleaning solution, start ultrasonic module to clean filter screen, clear complete after closedown washings import A10-1 and washings import B10-2 valve, waste liquid is exported suction filtration from flushing cover 6 go out, open washings import A10-1 again and washings import B10-2 valve gas injection makes filter screen rapid draing, backwash completes, take out and rinse cover 6, filter still to continue to come into operation.The service life that the present invention filters still filter screen can reach 9 ~ 12 months, and traditional filter screen service life is 3 ~ 6 months.The clearance of apparatus of the present invention quinoline insolubles (QI) reaches more than 98.5%.
figure of description
Fig. 1. the Tar production of back flush type needle-like is with filtering still.Identify in figure: 1: kettle, 2: tar entrance, 3: tar inlet valve, 4: spray-type tar distributor, 5: sludge outlet, 6: rinse cover, 7-1: junction button A, 7-2: junction button B, 8: ultrasonic module, 9: filter screen, 10-1: washings import A, 10-2: washings import B, 11: needle coke oil export.
Detailed description of the invention
Describe back flush type needle-like Tar production of the present invention below in conjunction with embodiment and accompanying drawing and filter still, these descriptions are not be further limited content of the present invention.
Embodiment 1
As shown in Figure 1, the Tar production of back flush type needle-like is with filtering still, this filtration still comprises kettle 1, tar entrance 2, sludge outlet 5, needle coke oil export 11, tar entrance 2 is positioned at the top of kettle 1, sludge outlet 5 is positioned at the middle part of kettle 1, needle coke oil export 11 is positioned at the bottom of kettle 1, it is spray-type tar distributor 4 that the tar entrance 2 of this filtration still stretches into kettle 1 inner structure, inwall in the middle part of kettle 1 is provided with junction button A7-1 and junction button B7-2, junction button A7-1 and junction button B7-2 are for being connected the flushing cover 6 can inserted from sludge outlet 5, in kettle 1, the below of sludge outlet 5 is provided with filter screen 9, the upper-lower position of filter screen 9 is provided with ultrasonic module 8, washings import A10-1 and washings import B10-2 is provided with in needle coke oil export 11 both sides.The quantity of described ultrasonic module 8 is 4.The power bracket of ultrasonic module is 100 ~ 250Hz.Described junction button A7-1 and junction button B7-2 is notch, inserts when rinsing cover 6 and firmly can block to pressing down, and when taking out flushing cover 6, left and right twisting can be deviate from.Described tar entrance 2 is positioned at kettle 1 outside and is provided with tar inlet valve 3; Described washings import A10-1 and washings import B10-2 is provided with valve.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, the quantity of described ultrasonic module 8 is 2, and all the other structures are identical.
Embodiment 3
The difference of the present embodiment and embodiment 1 is, the quantity of described ultrasonic module 8 is 1, and all the other structures are identical.
Application Example 2
For the back flush type needle-like Tar production filtration still of embodiment 1 ~ 3, with the needle coke slurry oil residue produced after Guangxi factory of large-scale petroleum chemical oil refining refining product oil for raw material, in use procedure, open tar entrance 2, needle coke oil export 11, close sludge outlet 5, it is spray-type tar distributor 4 that tar stock enters kettle 1 inner structure from tar entrance 2, slurry oil dispersion is fallen into upper filter screen 9 by spray-type tar distributor 4, (when filter efficiency is low) now can start ultrasonic module 8 as required, and the power of ultrasonic module is between 200 ~ 250Hz.Needle coke after filtration is discharged from needle coke oil export 11.
When filtration still is in filter process, filter screen be subject to granular substance blocking or colloid blocking more serious time, can start ultrasonic module 8, the power of ultrasonic module is between 200 ~ 250Hz, and under the effect of ultrasonic vibration, the blocking of slurry oil on filter screen is eased, when filtering still and needing maintenance in the later stage, from the flushing cover 6 that sludge outlet 5 is inserted, close needle coke oil export 11, after forming hermetically-sealed construction, open washings import A10-1 and washings import B10-2 valve pours cleaning solution, start ultrasonic module to clean filter screen, the power of ultrasonic module is between 200 ~ 250Hz, clear complete after closedown washings import A10-1 and washings import B10-2 valve, waste liquid is exported suction filtration from flushing cover 6 go out, open washings import A10-1 again and washings import B10-2 valve gas injection makes filter screen rapid draing, backwash completes, take out and rinse cover 6, filter still to continue to come into operation.
The above embodiment of the present invention scheme is only can not limit the present invention to explanation of the present invention, indicate in claim that present device is formed and connected mode, and the scope of parameter of the present invention is not pointed out in above-mentioned explanation, therefore, any change in the implication suitable with claims of the present invention and scope, is all considered to be and is included in the scope of claims.
Claims (4)
1. a back flush type needle-like Tar production is with filtering still, this filtration still comprises kettle (1), tar entrance (2), sludge outlet (5), needle coke oil export (11), tar entrance (2) is positioned at the top of kettle (1), sludge outlet (5) is positioned at the middle part of kettle (1), needle coke oil export (11) is positioned at the bottom of kettle (1), it is characterized in that, it is spray-type tar distributor (4) that the tar entrance (2) of this filtration still stretches into kettle (1) inner structure, the inwall at kettle (1) middle part is provided with junction button A(7-1) and junction button B(7-2), junction button A(7-1) with junction button B(7-2) for being connected the flushing cover (6) can inserted from sludge outlet (5), the below of kettle (1) interior sludge outlet (5) is provided with filter screen (9), the upper-lower position of filter screen (9) is provided with ultrasonic module (8), washings import A(10-1 is provided with in needle coke oil export (11) both sides) and washings import B(10-2).
2. still is filtered in back flush type needle-like Tar production according to claim 1, and it is characterized in that, the quantity of described ultrasonic module (8) is 1 ~ 4.
3. still is filtered in back flush type needle-like Tar production according to claim 1, it is characterized in that, described junction button A(7-1) and junction button B(7-2) be notch, insert when rinsing cover (6) and firmly can block to pressing down, when taking out flushing cover (6), left and right twisting can be deviate from.
4. still is filtered in back flush type needle-like Tar production according to claim 1, and it is characterized in that, described tar entrance (2) is positioned at kettle (1) outside and is provided with tar inlet valve (3); Described washings import A(10-1) and washings import B(10-2) be provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017561.1A CN105498325A (en) | 2016-01-12 | 2016-01-12 | Back-flush type filtering kettle for needle tar production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017561.1A CN105498325A (en) | 2016-01-12 | 2016-01-12 | Back-flush type filtering kettle for needle tar production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105498325A true CN105498325A (en) | 2016-04-20 |
Family
ID=55706860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610017561.1A Pending CN105498325A (en) | 2016-01-12 | 2016-01-12 | Back-flush type filtering kettle for needle tar production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105498325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534325A (en) * | 2020-05-11 | 2020-08-14 | 中国石油化工股份有限公司 | Enhanced residual oil hydrogenation equipment, method and system |
| CN112044139A (en) * | 2020-09-18 | 2020-12-08 | 安徽高博过滤科技有限公司 | Filter for separating residual oil in cutting fluid and filtering method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328409Y (en) * | 1998-03-04 | 1999-07-14 | 华南理工大学 | Supersonic filter net cleaning device |
| CN101619233A (en) * | 2009-07-28 | 2010-01-06 | 江汉大学 | Method for filtering and removing catalyst powder in catalytic cracking oil slurry through ultrasonic irradiation |
| CN201551897U (en) * | 2009-06-29 | 2010-08-18 | 湖南力合科技发展有限公司 | Ultrasonic cleaning and filtering device |
| CN202778062U (en) * | 2012-09-26 | 2013-03-13 | 河南龙宇煤化工有限公司 | Box-type multilayer filter |
| CN203108297U (en) * | 2013-03-15 | 2013-08-07 | 陕西煤业化工技术研究院有限责任公司 | Filter kettle for needle coke production |
| CN204193624U (en) * | 2014-09-09 | 2015-03-11 | 天津农禧源科技有限公司 | Screening plant |
| CN204522502U (en) * | 2015-01-23 | 2015-08-05 | 广西泓达生物能源科技有限公司 | Cycle oil sizing device externally extracting oil filter plant |
-
2016
- 2016-01-12 CN CN201610017561.1A patent/CN105498325A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2328409Y (en) * | 1998-03-04 | 1999-07-14 | 华南理工大学 | Supersonic filter net cleaning device |
| CN201551897U (en) * | 2009-06-29 | 2010-08-18 | 湖南力合科技发展有限公司 | Ultrasonic cleaning and filtering device |
| CN101619233A (en) * | 2009-07-28 | 2010-01-06 | 江汉大学 | Method for filtering and removing catalyst powder in catalytic cracking oil slurry through ultrasonic irradiation |
| CN202778062U (en) * | 2012-09-26 | 2013-03-13 | 河南龙宇煤化工有限公司 | Box-type multilayer filter |
| CN203108297U (en) * | 2013-03-15 | 2013-08-07 | 陕西煤业化工技术研究院有限责任公司 | Filter kettle for needle coke production |
| CN204193624U (en) * | 2014-09-09 | 2015-03-11 | 天津农禧源科技有限公司 | Screening plant |
| CN204522502U (en) * | 2015-01-23 | 2015-08-05 | 广西泓达生物能源科技有限公司 | Cycle oil sizing device externally extracting oil filter plant |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534325A (en) * | 2020-05-11 | 2020-08-14 | 中国石油化工股份有限公司 | Enhanced residual oil hydrogenation equipment, method and system |
| CN112044139A (en) * | 2020-09-18 | 2020-12-08 | 安徽高博过滤科技有限公司 | Filter for separating residual oil in cutting fluid and filtering method thereof |
| CN112044139B (en) * | 2020-09-18 | 2024-01-12 | 安徽高博过滤科技有限公司 | Filter for separating residual oil in cutting fluid and filtering method thereof |
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Application publication date: 20160420 |