CN102125919A - Mechanical cleaning device for product oil tank - Google Patents
Mechanical cleaning device for product oil tank Download PDFInfo
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- CN102125919A CN102125919A CN 201110007823 CN201110007823A CN102125919A CN 102125919 A CN102125919 A CN 102125919A CN 201110007823 CN201110007823 CN 201110007823 CN 201110007823 A CN201110007823 A CN 201110007823A CN 102125919 A CN102125919 A CN 102125919A
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Abstract
The invention provides a mechanical cleaning device for a product oil tank. The mechanical cleaning device comprises a to-be-cleaned oil tank, a water chamber, and a washing pump. The mechanical cleaning device for the product oil tank is characterized in that the to-be-cleaned oil tank is orderly communicated with a filter and a vacuum suction tank, and the vacuum suction tank is divided into three routes, wherein the first route is orderly communicated with the washing pump, at least one ejector, and the to-be-cleaned oil tank; the second route is communicated with a recovery pump and divided into two routes, wherein one route is orderly communicated with an ultrafilter and a recovered oil tank, and the other route is communicated with an oil-water separation tank by a cyclone separator; and the third route is orderly communicated with a vacuum pump and the oil-water separation tank; an upper pipe of the oil-water separation tank is divided into two routes, wherein one route is connected with an evacuation pipe through a flame arrester, and the other route is connected with the to-be-cleaned oil tank; a lower pipe of the oil-water separation tank is divided into two routes through a valve and a membrane pump, wherein one route is communicated with the recovered oil tank through the ultrafilter, and the other route is communicated with an air compressor; and a water pipe of the oil-water separation tank is divided into two routes through a valve, wherein one route is communicated with the cleaning pump, and the other route is communicated with the oil-water separation tank by the cyclone separator. The mechanical cleaning device can efficiently, safely and conveniently clean the to-be-cleaned oil tank.
Description
Technical field
The present invention relates to a kind of mechanical device that small-sized oil storage tank automatically cleans that is used for, the oil tank wash machine device to be cleaned of be applied to each oil depot in the petroleum and petrochemical industry, stand specifically is the mechanical cleaning device of a kind of product tank.
Background technology
Along with the development of society and the raising of economic level, society is more and more higher to the requirement of the energy, the oil tank amount to be cleaned of various application, deposit, strategic crude oil and product oil increases sharply, according to incompletely statistics, only the big small-sized oil storage tank of domestic petroleum petrochemical system is with regard to seats up to ten thousand, and a large amount of oil tanks to be cleaned has brought very big cleaning amount.At present, PetroChina Company Limited., China Petrochemical Industry's product tank, industrial chemicals jar and aviation oil tank are cleared up with artificial cleaning way usually, and it is long in time limit, efficient is low, high pollution, seriously restrict Petrochemical Enterprises and finished product user storage capacity and run well.Moreover in the artificial purge tank process, security incident also constantly takes place.Especially contain the cleaning of the industrial chemicals jar of severe toxicity, artificial purge tank is just more dangerous.Therefore, press for and product tank is carried out machinery clean.
Summary of the invention
The object of the invention is: in order to overcome the conventional artificial many drawbacks that exist of cleaning, remedy the deficiency that existing cleaning equipment exists in technological design, a kind of product tank machinery cleaning device is provided, and it has efficiently, carries out safely, easily the cleaning of oil tank to be cleaned.
The present invention seeks to realize like this: a kind of product tank machinery cleaning device, comprise: oil tank to be cleaned, hydroecium, scavenging pump, described oil tank to be cleaned is communicated with filter, vacuum draw jar successively through valve, and the vacuum draw jar divides three the tunnel: the first via is communicated with scavenging pump, at least one spraying machine, oil tank to be cleaned successively through valve; The second the tunnel be communicated with to reclaim pump through valve, reclaims pump and divides two-way through valve: the one tunnel is communicated with accurate filter, valve successively through valve is communicated with and reclaims oil tank; Another road: be communicated with gun barrel through valve, cyclone separator; Third Road: through valve, be communicated with vavuum pump, gun barrel successively; Pipe divides two-way by valve on the gun barrel: the one tunnel through valve by spark arrester to evacuated tube; Another road is communicated with oil tank to be cleaned; Gun barrel pipe down divides two-way through valve, membrane pump successively: the one tunnel through valve, accurate filter connection recovery oil tank; Another road: be communicated with air compressor machine; The gun barrel water pipe divides two-way through valve: the one tunnel is communicated with scavenging pump; Another road is communicated with gun barrel through valve by cyclone separator.
Be communicated with chemicals dosing plant between the valve of described gun barrel outlet pipe and the valve.
Described oil tank to be cleaned is communicated with nitrogen gas generator and oxygen and fuel gas checkout gear respectively.
Described oil water separator is horizontal tank body, tank inner chamber is divided into separation chamber, hydroecium and grease chamber by dividing plate, each chamber is not communicated with mutually, cyclone separator is set in the separation chamber, cyclone separator oil export pipe is communicated with the grease chamber above grease chamber's dividing plate, and the oil water separator tank body is respectively equipped with inlet, oil export, water out, sewage draining exit and hand hole at each chamber position.
Described said apparatus is provided with full blast resistance construction.
Described said apparatus be arranged on removable vehicle-mounted on.
Described filter is a backwash filter.
The present invention compares the cleaning that has efficiently, carries out oil tank to be cleaned safely, easily with routine, concrete advantage is as follows:
1, equipment is small but excellent, is adapted at tank field, refinery small space construction operation.
2, equipment integrates suction, water-oil separating, gas detection, cleans with injection apparatus, nitrogen gas generator and full blast resistance construction, can vehicle-mountedly move, and can take into account fixing use again.
3, can carry out purification filtering to gasoline, diesel oil, aviation kerosine in the tank field and handle, guarantee the dispatch from the factory normal use of back subscriber equipment of oil product.
4, cleaning process is hermetically sealed form, and assurance equipment and workmen are perfectly safe.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The numbering explanation:
1, oil tank to be cleaned, 2, filter, 3, the vacuum draw jar, 4, reclaim pump,
5, scavenging pump, 6, cyclone separator, 7, the oil water separator jar, 8, the grease chamber,
9, vavuum pump, 10, accurate filter, 11, reclaim oil tank, 12, spraying machine,
13, air compressor machine, 14, hydroecium, 15, membrane pump
16, oxygen and fuel gas checkout gear, 17, nitrogen gas generator, 18, chemicals dosing plant,
The specific embodiment
Embodiment
A kind of product tank machinery cleaning device, comprise: oil tank 1 to be cleaned, hydroecium 14, scavenging pump, described oil tank to be cleaned 1 is communicated with vacuum draw jar 3 minutes three tunnel through valve by filter 2 with vacuum draw jar 3: the first via is at least one spraying machine 12 in valve 301 is communicated with scavenging pump 5, oil tank to be cleaned 1 successively; The second the tunnel is communicated with successively through valve 302 and reclaims pump 4, reclaims pump 4 through 401 fens two-way of valve: the one tunnel is communicated with accurate filter 10, valve 1101 successively through valve 403, valve 101 is communicated with and reclaims oil tanks 11; Another road: be communicated with gun barrel 7 through valve 402, valve 601, cyclone separator 6; Third Road: be communicated with gun barrel 7 through valve, vavuum pump 9; Pipe is by 801 fens two-way of valve on the gun barrel 7: the one tunnel through valve by spark arrester 8011 to evacuated tube; Another road is communicated with oil tank 1 to be cleaned; 7 times pipes of gun barrel are successively through valve 802,15 fens two-way of membrane pump: the one tunnel through valve 1501, accurate filter 10 connection recovery oil tanks 11; Another road: be communicated with air compressor machine 13; Gun barrel 7 water pipes process valve 1401,1402 fens two-way of valve: the one tunnel is communicated with scavenging pump 5; Another road is communicated with gun barrel 7 through valve 1403, valve 401, valve 402, valve 601 by cyclone separator 6; Be communicated with chemicals dosing plant 18 through valve 1801 between the valve 1401 of described gun barrel 7 outlet pipes and the valve 1402.
Described oil tank to be cleaned 1 is communicated with nitrogen gas generator 17 and oxygen and fuel gas checkout gear respectively.Described nitrogen gas generator and oxygen and fuel gas checkout gear are general domestic gas-detecting device commonly used.
Described oil water separator jar 7 is horizontal tank body, tank inner chamber is divided into separation chamber, hydroecium 14 and grease chamber 8 by dividing plate, each chamber is not communicated with mutually, the outlet of cyclone separator 6 is set in the separation chamber, cyclone separator 6 oil export pipes are communicated with grease chamber 8 above grease chamber's dividing plate, oil water separator jar 7 tank bodies are respectively equipped with inlet at each chamber position, oil export, water out, sewage draining exit and hand hole.This also is general known technology commonly used.
Described cyclone separator 6: adopt general cyclonic separator commonly used, utilize pump discharge to carry out eddy flow and utilize density of medium poor, separate.Heavy water enters hydroecium 14, and light oil enters grease chamber 8 by grease chamber's dividing plate.
Described said apparatus is provided with full blast resistance construction.Be general explosion precaution commonly used.
Described said apparatus be arranged on removable vehicle-mounted on.
Described cyclone separator is the common equipment that water oil separates, and market can be purchased.Described filter 2 is general filter for backwash filter, accurate filter 10, and market can be purchased.
Described membrane pump 15, scavenging pump, recovery pump are general pump, only name for the purpose of difference.Market can be purchased.
Described spraying machine 12 is general ejecting gun.Market can be purchased.
Described vacuum draw jar is general tank body.Market can be purchased.
Described spark arrester (8011) is general commonly used, and market can be purchased.
Described oxygen and fuel gas checkout gear adopt present domestic common technology.
Described nitrogen gas generator, market can be purchased.
Between described gun barrel 7 aqueduct valves 1401 and the valve 1402 chemicals dosing plant is set.Described chemicals dosing plant adopts general measuring pump, and market can be purchased.
Described accurate filter: when cleaning aviation kerosine, kerosene is carried out secondary filter, guarantee the normal safe handling of aviation aircraft.Described accurate filter is for what use always, and market can be purchased.
Described vavuum pump: utilize negative pressure of vacuum, oil product in the oil tank 1 to be cleaned is evacuated in jar outer vacuum draw jar 3, carry out respective handling again.
Practical operation:
1, preparation:
1. prospecting on-the-spot 2. formulate construction plan 3. determine arrangement and method for construction 4. data prepare 5. equipment, data and transport 9. equipment and the pressure testing of pipe network integral body of being connected that on-the-spot 6. equipment, pipe network technology connect link oil tank 8. to be cleaned with the equipment ground line of 7. power line to.
2, oily handover process:
1. determine liquid level, the water content of oil tank 1 to be cleaned.Adopt recovery pump 4 that the good oil in the oil tank 1 to be cleaned is arrived vacuum draw jar 3 through filter 2, move on in the recovery oil tank 11 through accurate filter 10 by reclaiming pump 4 again.
3, profit movement process:
1. oil tank 1 liquid level to be cleaned is opened manhole after reducing, and ventilates, and injects clear water 10cm, detects gas concentration, and Residual oil is done further recovery, movement.
2. with recovery pump 4 oil moisture in the oil tank 1 to be cleaned again through cyclone separator 6 is separated to oil water separator jar 7 to recovery pump 4, recovery pump 4 through valve 401, valve 402, valve 601 through filter 2, vacuum draw jar 3, process valve 302, oil water separator jar 7 isolated oil enter grease chamber 8, and the oil in the grease chamber 8 is input to after valve 1501, valve 101 filter by accurate filter 10 through valve 801, membrane pump 15 again and reclaims in the oil tank 11.
Four, warm water cleaning process:
1. Residual oil in the oil tank to be cleaned 1 is reclaimed, after movement is clean, during combustable gas concentration in the oil tank to be cleaned≤0.03VOL%, begins to carry out water and clean.
2. start scavenging pump 5, the spraying machine 12 that utilization is arranged on the manhole cleans oil tank wall adjunct to be cleaned and bottom settlings thing with the operating pressure of 0.6Mp, smash and dissolved organic matter, its process is as follows: the water of oil water separator jar 7 enters hydroecium 14 and arrives scavenging pump 5, uses spraying machine 12 oil tank 1 tank skin adjunct to be cleaned and bottom settlings things through valve 1401, valve 1402, smashes and dissolved organic matter.Oil moisture in the described oil tank to be cleaned 1 again through cyclone separator 6 is separated to oil water separator jar 7 to recovery pump 4, recovery pump 4 through valve 401, valve 402, valve 601 through filter 2, vacuum draw jar 3, process valve 302, oil water separator jar 7 isolated oil enter grease chamber 8, and the oil in the grease chamber 8 is input to after valve 1501, valve 101 filter by accurate filter 10 through valve 801, membrane pump 15 again and reclaims in the oil tank 11.The water of oil water separator jar 7 enters hydroecium 14 aforesaid wash cycles processes.
Increasing cleaning pressure when 3. removing for big capacity arch-roof tank or oil viscosity disaster adopts and reclaims the cleaning process that pump 4 and scavenging pump 5 series connection are used: in the described oil tank 1 to be cleaned moisture oil through filter 2, vacuum draw jar 3, through valve 302 to reclaiming pump 4, reclaiming pump 4 through valve 1403, scavenging pump 5, treat clean the storage 1 tank skin adjunct and bottom settlings thing with spraying machine 12, smash also dissolved organic matter.The oil of oil water separator jar 7 reclaims: the oil of oil water separator jar 7 enters grease chamber 8, and the oil in the grease chamber 8 is input to after valve 1501, valve 101 filter by accurate filter 10 through valve 801, membrane pump 15 again and reclaims in the oil tank 11.The water of oil water separator jar 7 enters hydroecium 14 aforesaid wash cycles processes.
4. when cleaning the industrial chemicals jar, add cleaning agent, the improvement cleaning performance, its method:
The water of oil water separator jar 7 enters hydroecium 14 process valves 1401, arrives scavenging pump 5, uses spraying machine 12 oil tank 1 tank skin adjunct to be cleaned and bottom settlings things through valve 1402 by chemicals dosing plant adding cleaning agent, smashes and dissolved organic matter.Described cleaning agent is that the user is selected voluntarily according to the needs of the chemical products of oil tank to be cleaned.
If during for big capacity arch-roof tank or the removing of viscosity disaster, need to increase cleaning pressure, the cleaning process that adopts recovery pump 4 and scavenging pump 5 to connect and use:
Oil moisture in the described oil tank to be cleaned 1 is treated clean the storage 1 tank skin adjunct and bottom settlings thing pressure to recovery pump 4, recovery pump 4 through valve 1403 and scavenging pump 5 polyphones, raising spraying machine 12 through filter 2, vacuum draw jar 3, process valve 302, so that smash also dissolved organic matter.The water of described oil water separator jar 7 enters hydroecium 14 process valves 1401, arrives scavenging pump 5, uses spraying machine 12 oil tank 1 tank skin adjunct to be cleaned and bottom settlings things through valve 1402 by chemicals dosing plant adding cleaning agent, smashes and dissolved organic matter.
When combustable gas concentration is lower than 0.03VOL% in the jar, start pump, the spraying machine that utilization is arranged on the manhole cleans tank skin adjunct and bottom settlings thing with the operating pressure of 0.4-1Mpa, dissolve organic matter, drift out recovery through filter 2 these automatic filtering units, isolated water enters wash cycles to vacuum draw jar 3.
Five, ending engineering
1. water cleans to finish the jar composition of gases within is detected, reach be allowed for access after the safety standard jar in cleaning, after personnel advance jar, leave the special messenger carries out jar inside and outside situation at the manhole place contact, advancing jar personnel uses the speciality explosion-proof instrument with surplus liquid in the jar, iron rust and other foreign material are cleaned out, and wait for the acceptance of work.
2. the side of accompanying finally checks and accepts, and after the acceptance(check), cuts off the electricity supply, source of the gas, water source, and all patches are removed, and recovers manhole, place, with the material entrucking, withdraws the scene.
Six, safety anti-explosive engineering
1. enter the tank field vehicle flameproof enclosure need be installed
2. the workmen enters the tank field and need wear anti-static clothing, wears rubber gloves, and the band kindling material compacts
3. meeting wind and snow weather forbids into a jar operation
4. the fire safety sign need be put in the operation area, breathing mask, fire extinguisher, warning sign, is provided with antistatic, fire prevention, explosion precaution.
Experimental results show that:
It has efficiently, carries out safely, easily the cleaning of oil tank to be cleaned the present invention.Specifically have advantage as follows:
1, equipment is small but excellent, is adapted at tank field, refinery small space construction operation.
2, equipment integrates suction, water-oil separating, gas detection, cleans with injection apparatus, the full blast resistance construction of nitrogen gas generator, can vehicle-mountedly move, and can take into account again to fix and use.
3, can carry out purification filtering to gasoline, diesel oil, aviation kerosine in the tank field and handle, guarantee the dispatch from the factory normal use of back subscriber equipment of oil product.
4, cleaning process is hermetically sealed form, and assurance equipment and workmen are perfectly safe.
Claims (7)
1. product tank machinery cleaning device, comprise: oil tank to be cleaned (1), hydroecium (14), scavenging pump, it is characterized in that: described oil tank to be cleaned (1) is communicated with filter (2), vacuum draw jar (3) successively through valve, vacuum draw jar (3) Fen Sanlu: the first via is communicated with scavenging pump (5), at least one spraying machine (12), oil tank to be cleaned (1) successively through valve (301); The second the tunnel be communicated with to reclaim pump (4) through valve (302), reclaims pump (4) and divides two-way through valve (401): the one tunnel is communicated with accurate filter (10), valve (1101) successively, reclaims oil tank (11) through valve (403,101); Another road: be communicated with gun barrel (7) through valve (402,601), cyclone separator (6); Third Road: be communicated with vavuum pump (9), gun barrel (7) successively through valve; Gun barrel (7) is gone up pipe and is divided two-way by valve (801): the one tunnel through valve by spark arrester (8011) to evacuated tube; Another road is communicated with oil tank to be cleaned (1); Gun barrel (7) pipe down divides two-way through valve (802), membrane pump (15) successively: the one tunnel through valve (1501), accurate filter (10) connection recovery oil tank (11); Another road: be communicated with air compressor machine (13); Gun barrel (7) water pipe divides two-way through valve (1401,1402): the one tunnel is communicated with scavenging pump (5); Another road is communicated with gun barrel (7) through valve (1403,401,402,601) by cyclone separator (6).
2. product tank according to claim 1 machinery cleaning device is characterized in that: be communicated with chemicals dosing plant (18) through valve (1801) between the valve (1401) of described gun barrel (7) outlet pipe and the valve (1402).
3. product tank machinery cleaning device according to claim 1, it is characterized in that: described oil tank to be cleaned (1) is communicated with nitrogen gas generator (17) and oxygen and fuel gas checkout gear (16) respectively.
4. product tank machinery cleaning device according to claim 1, it is characterized in that: described oil water separator (7) is horizontal tank body, tank inner chamber is divided into separation chamber, hydroecium (14) and grease chamber (8) by dividing plate, each chamber is not communicated with mutually, cyclone separator (6) is set in the separation chamber, cyclone separator (6) oil export pipe is communicated with grease chamber (8) above grease chamber's dividing plate, and the tank body of oil water separator (7) is respectively equipped with inlet, oil export, water out, sewage draining exit and hand hole at each chamber position.
5. product tank machinery cleaning device according to claim 1, it is characterized in that: described said apparatus is provided with full blast resistance construction.
6. product tank according to claim 1 machinery cleaning device is characterized in that: described said apparatus be arranged on removable vehicle-mounted on.
7. product tank machinery cleaning device according to claim 1, it is characterized in that: described filter (2) is a backwash filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100078233A CN102125919B (en) | 2011-01-14 | 2011-01-14 | Mechanical cleaning device for product oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100078233A CN102125919B (en) | 2011-01-14 | 2011-01-14 | Mechanical cleaning device for product oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102125919A true CN102125919A (en) | 2011-07-20 |
| CN102125919B CN102125919B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100078233A Active CN102125919B (en) | 2011-01-14 | 2011-01-14 | Mechanical cleaning device for product oil tank |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615074A (en) * | 2012-04-17 | 2012-08-01 | 碧海舟（北京）石油化工设备有限公司 | Device and method for cleaning and processing storage tank |
| CN103143534A (en) * | 2011-12-07 | 2013-06-12 | 中船重工（沈阳）辽海输油设备有限公司 | Integrated single power lever |
| CN103143540A (en) * | 2011-12-07 | 2013-06-12 | 中船重工（沈阳）辽海输油设备有限公司 | Integrated system in linked network |
| CN103240247A (en) * | 2013-05-07 | 2013-08-14 | 西安石油大学 | Refined oil cleaning system |
| CN104291542A (en) * | 2014-09-24 | 2015-01-21 | 北京蓝星清洗有限公司 | Equipment and method for clearing away and recovering sludge at bottom of crude oil storage tank |
| CN105032871A (en) * | 2015-06-25 | 2015-11-11 | 西安航空动力股份有限公司 | Cleaning device and method of finished oil tank |
| CN105854409A (en) * | 2016-05-31 | 2016-08-17 | 张荣斌 | Impurity separating device used for petroleum storage tank |
| CN107175244A (en) * | 2017-05-27 | 2017-09-19 | 华油惠博普科技股份有限公司 | One kind is used for skid-mounted type tank car automatic cleaning system |
| CN107900046A (en) * | 2017-11-21 | 2018-04-13 | 无锡中科苏惠自动化技术有限公司 | A kind of automation cleaning device for oil storage tank |
| CN107952261A (en) * | 2017-09-13 | 2018-04-24 | 中国石化销售有限公司广东中山石油分公司 | A kind of three cephalophragma devices and water-oil separating bucket purging method |
| CN111085516A (en) * | 2019-12-11 | 2020-05-01 | 陕西航天机电环境工程设计院有限责任公司 | Oil sludge cleaning device and oil sludge cleaning vehicle |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143534A (en) * | 2011-12-07 | 2013-06-12 | 中船重工（沈阳）辽海输油设备有限公司 | Integrated single power lever |
| CN103143540A (en) * | 2011-12-07 | 2013-06-12 | 中船重工（沈阳）辽海输油设备有限公司 | Integrated system in linked network |
| CN102615074B (en) * | 2012-04-17 | 2014-11-26 | 碧海舟（北京）石油化工设备有限公司 | Device and method for cleaning and processing storage tank |
| CN102615074A (en) * | 2012-04-17 | 2012-08-01 | 碧海舟（北京）石油化工设备有限公司 | Device and method for cleaning and processing storage tank |
| CN103240247A (en) * | 2013-05-07 | 2013-08-14 | 西安石油大学 | Refined oil cleaning system |
| CN104291542B (en) * | 2014-09-24 | 2016-05-25 | 北京蓝星清洗有限公司 | Silt displacement reclaimer and method at the bottom of a kind of Plates of Oil Storage Tank |
| CN104291542A (en) * | 2014-09-24 | 2015-01-21 | 北京蓝星清洗有限公司 | Equipment and method for clearing away and recovering sludge at bottom of crude oil storage tank |
| CN105032871A (en) * | 2015-06-25 | 2015-11-11 | 西安航空动力股份有限公司 | Cleaning device and method of finished oil tank |
| CN105854409A (en) * | 2016-05-31 | 2016-08-17 | 张荣斌 | Impurity separating device used for petroleum storage tank |
| CN105854409B (en) * | 2016-05-31 | 2018-05-29 | 湛江港石化码头有限责任公司 | A kind of impurity separating device for petroleum storage tank |
| CN107175244A (en) * | 2017-05-27 | 2017-09-19 | 华油惠博普科技股份有限公司 | One kind is used for skid-mounted type tank car automatic cleaning system |
| CN107952261A (en) * | 2017-09-13 | 2018-04-24 | 中国石化销售有限公司广东中山石油分公司 | A kind of three cephalophragma devices and water-oil separating bucket purging method |
| CN107952261B (en) * | 2017-09-13 | 2020-05-22 | 中国石化销售有限公司广东中山石油分公司 | Three-head deconcentrator and oil-water separation barrel emptying method |
| CN107900046A (en) * | 2017-11-21 | 2018-04-13 | 无锡中科苏惠自动化技术有限公司 | A kind of automation cleaning device for oil storage tank |
| CN111085516A (en) * | 2019-12-11 | 2020-05-01 | 陕西航天机电环境工程设计院有限责任公司 | Oil sludge cleaning device and oil sludge cleaning vehicle |
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| Publication number | Publication date |
|---|---|
| CN102125919B (en) | 2012-08-15 |
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