CN115477459A - Oil sludge treatment system - Google Patents
Oil sludge treatment system Download PDFInfo
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- CN115477459A CN115477459A CN202211168701.7A CN202211168701A CN115477459A CN 115477459 A CN115477459 A CN 115477459A CN 202211168701 A CN202211168701 A CN 202211168701A CN 115477459 A CN115477459 A CN 115477459A
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- 239000010802 sludge Substances 0.000 title claims abstract description 117
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 238000005406 washing Methods 0.000 claims abstract description 60
- 238000000926 separation method Methods 0.000 claims abstract description 58
- 238000004062 sedimentation Methods 0.000 claims abstract description 50
- 239000000203 mixture Substances 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000001556 precipitation Methods 0.000 claims abstract description 18
- 235000019198 oils Nutrition 0.000 claims description 139
- 239000003814 drug Substances 0.000 claims description 28
- 238000003860 storage Methods 0.000 claims description 23
- 239000010865 sewage Substances 0.000 claims description 18
- 239000013049 sediment Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 10
- 235000019476 oil-water mixture Nutrition 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 238000007781 pre-processing Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 126
- 239000010779 crude oil Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000011499 joint compound Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000013517 stratification Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
- B01F27/1921—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms with fixed axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
- B01F27/921—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with helices centrally mounted in the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
- B01F35/123—Maintenance of mixers using mechanical means using scrapers for cleaning mixers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The application relates to the technical field of oil sludge treatment, in particular to an oil sludge treatment system which comprises a pretreatment device, a water washing device, an oil-water separation device and a solid-liquid separation device which are sequentially arranged; the water washing device comprises a water washing mechanism and a precipitation layering mechanism; the water washing mechanism comprises a water washing tank and a stirring assembly, and the precipitation layering mechanism comprises a precipitation layering tank, a rotating shaft, a scraper and a motor; the oil outlet groove is formed in the sedimentation layering tank, the rotating shaft and the sedimentation layering tank are coaxially arranged, the rotating shaft and the sedimentation layering tank are rotatably connected, the scraper is installed on the rotating shaft, the top wall of the scraper is higher than the bottom wall of the oil outlet groove, and the motor drives the rotating shaft to rotate. The mixture of the oil, the water and the mud after washing is conveniently separated through the washing device, the mixture of the oil, the water and the mud is separated into an oil-water mixed liquid and a mud-water mixture, then the oil, the water and the mud are fully separated through the oil-water separation device and the solid-liquid separation device, and further the recycling rate of the oil and the mud in the oil-mud mixed liquid is improved.
Description
Technical Field
The application relates to the technical field of oil sludge treatment, in particular to an oil sludge treatment system.
Background
The oil sludge treatment refers to sludge generated in the production process of an oil field due to the processes of crude oil extraction, storage, gathering, processing and crude oil extraction liquid treatment, and is named as containing crude oil or some components in the crude oil, and the oil sludge mainly comprises: oil sludge falling to the ground, tank cleaning oil sludge, floating scum and the like.
Application number is 202110005494.2's patent document discloses a normal atmospheric temperature adds medicine washing processing fatlute system, including fatlute storage pond, shredder, screening part, normal atmospheric temperature add medicine rinse-system, medicine system, buffer pool, piece-rate system, sump oil recovery pond, sewage circulation system, fatlute storage pond uses with the shredder cooperation, screening part uses with the shredder cooperation, normal atmospheric temperature adds medicine rinse-system and uses with the cooperation of screening part, normal atmospheric temperature adds medicine rinse-system and is utilizing the tangential force that the stirring produced to carry out the normal atmospheric temperature washing with the oily material on the tiny particle material and peel off out through adding medicine, adding water, add medicine system and buffer pool and normal atmospheric temperature medicine rinse-system cooperation and use, medicine system is that the medicine system squeezes into normal atmospheric temperature with the medicine rinse-system through the diaphragm pump with the medicament that the configuration good, piece-rate system uses with the buffer pool cooperation, sump oil recovery pond and sewage circulation system and piece-rate system cooperation use, sump oil recovery pond is used for storing crude oil and the separation system after the processing of medicine rinse-rate system, sewage recirculation system is used for collecting carries out the simple normal atmospheric temperature recycling that subsides the separation system that uses through the sewage recirculation that the production that the medicine rinse-rate used.
In view of the above-mentioned related technologies, the applicant believes that in the process of oil sludge treatment, after the oil sludge mixed liquid is washed with water, the oil sludge mixed liquid is separated by the separation system, which easily causes incomplete separation of the oil sludge mixed liquid and affects the rate of repetition of oil and mud in the oil sludge mixed liquid.
Disclosure of Invention
In order to improve the reuse rate of oil and mud in the oil sludge mixed liquid, the application provides an oil sludge treatment system.
An oil sludge treatment system comprises a pretreatment device, a water washing device, an oil-water separation device and a solid-liquid separation device which are arranged in sequence;
the pretreatment device is used for primary screening of oil sludge;
the water washing device comprises a water washing mechanism and at least three groups of precipitation layering mechanisms which are arranged in parallel;
the washing mechanism comprises a washing tank and a stirring assembly for stirring oil sludge and liquid medicine in an inner cavity of the washing tank, and the stirring assembly is arranged on the washing tank;
the sedimentation layering mechanism comprises a sedimentation layering tank, a rotating shaft, a scraping plate and a motor;
a fourth pipeline is installed at a feed inlet of the precipitation layering tank, one end, far away from the precipitation layering tank, of the fourth pipeline is communicated with an inner cavity of the water washing tank, and an oil outlet groove for discharging an oil-water mixture is formed in the precipitation layering tank;
the rotating shaft is coaxially arranged with the precipitation layering tank and is rotationally connected with the precipitation layering tank, the scraper is arranged on the rotating shaft and is positioned in an inner cavity of the precipitation layering tank, the top wall of the scraper is higher than the bottom wall of the oil outlet tank, the motor is arranged at one end of the rotating shaft extending out of the precipitation layering tank, and the motor drives the rotating shaft to rotate;
an oil discharge pipe and a sludge discharge pipe are mounted on the sedimentation layering tank, one end of the oil discharge pipe is communicated with the inner cavity of the oil outlet groove, the other end of the oil discharge pipe is connected with the oil-water separation device, and the oil-water separation device is used for oil-water separation in an oil-sludge mixture;
mud pipe one end with deposit layering jar's inner chamber intercommunication, just the mud pipe is close to deposit layering jar's diapire setting, the mud pipe is kept away from deposit layering jar one end with solid-liquid separation equipment connects, solid-liquid separation equipment is arranged in the sludge mixture solid-liquid separation.
According to the technical scheme, in the oil sludge treatment process, firstly, the oil sludge is subjected to primary screening through the pretreatment device, other large particles and foreign matters in the oil sludge are separated, the separated oil sludge enters the water washing tank, meanwhile, the liquid medicine is added into the water washing tank, the oil sludge and the liquid medicine in the water washing tank are sufficiently stirred through the stirring assembly, so that crude oil in the oil sludge is sufficiently resolved, the resolved oil sludge enters the layering tank through the fourth pipeline, the motor is adjusted, the driving shaft of the motor drives the rotating shaft to rotate, the rotating shaft drives the scraper to move, the floating oil on the upper layer of the oil sludge-water mixed liquid is scraped into the oil outlet tank, the oil-water mixed liquid is separated into the oil-water mixed liquid and the oil-water mixture, the oil-water mixed liquid flows into the oil-water separation device through the oil discharge pipe, the oil-water mixture is separated through the oil discharge pipe, the mud-water mixture is discharged into the solid-liquid separation device through the mud pipe, and the separation device is used for separating mud from water; the designed oil sludge treatment system is convenient for separating the mixture of oil, water and sludge after washing through the washing device, the mixture of oil, water and sludge is separated into oil-water mixed liquid and sludge-water mixture, then the oil-water separation device and the solid-liquid separation device are used for realizing the full separation of oil, water and sludge, and further the recycling rate of the oil and sludge in the oil sludge mixed liquid is improved.
Optionally, deposit the layering mechanism and still include connecting rod, lower connecting rod and at least one helical blade, go up connecting rod, lower connecting rod and helical blade and all be located deposit in the inner chamber of layering jar, just go up connecting rod and lower connecting rod all with the pivot is connected, the scraper blade is located go up the connecting rod top, go up the connecting rod and all follow with lower connecting rod the radial direction of pivot sets up, just helical blade one end with go up the connecting rod and connect, the other end with lower connecting rod connects.
By adopting the technical scheme, the motor is driven, the output shaft of the motor drives the rotating shaft to rotate, the rotating shaft drives the spiral blade to rotate, the spiral blade can fully stir the oil, the mud and the water in the sedimentation layering tank, after the fully stirred mixed liquid of the oil, the mud and the water is precipitated, the upper layer is an oil layer, the middle layer is a water layer, and the lower layer is a mud layer; the upper connecting rod and the lower connecting rod are convenient for fixing the helical blades, so that the helical blades are fixedly connected with the rotating shaft, and in addition, the oil sludge-water mixture is fully stirred through the helical blades, so that the oil, mud and water in the sedimentation layering tank are layered.
Optionally, a support frame is arranged in an inner cavity of the sedimentation layering tank, the support frame is far away from the rotating shaft, the motor is rotatably connected with the support frame, and the helical blade is located above the support frame.
Through adopting above-mentioned technical scheme, the support frame of design is convenient for support the pivot, avoids the pivot to keep away from motor one end and takes place the pivot swing, has prolonged washing unit's life.
Optionally, a stirring blade is arranged on the rotating shaft, and the stirring blade is located between the helical blade and the support frame.
Through adopting above-mentioned technical scheme, the stirring vane of design is convenient for strike off the mud layer of sediment layering jar lower floor, has reduced the mud layer and has piled up in sediment layering tank bottoms portion, and then the mud layer of being convenient for discharges sediment layering jar.
Optionally, preprocessing device is including keeping in pond, first pipeline, second pipeline and vibration mechanism, vibration mechanism includes shale shaker jar and at least one shale shaker, the shale shaker install in directly over the shale shaker jar, just the discharge gate of shale shaker with the inner chamber intercommunication of shale shaker jar, keep in the pond with the shale shaker passes through first pipeline intercommunication, install first elevator pump on the first pipeline, the shale shaker jar with deposit layering jar and pass through second pipeline intercommunication, install the second elevator pump on the second pipeline.
By adopting the technical scheme, in the oil sludge treatment process, the oil sludge stored in the temporary storage pool is regulated by the first lifting pump, so that the oil sludge mixed liquid in the temporary storage pool enters the vibrating screen, large particles and foreign matters in the oil sludge are separated, the separated oil sludge flows into the vibrating screen tank, and the oil sludge in the vibrating screen tank enters the water washing tank by the regulation of the second lifting pump; the preprocessing device of design is convenient for carry out the primary separation to fatlute mixture, gets rid of the large granule and the foreign matter in the fatlute mixture, in addition, transports the fatlute mixture after removing the impurity to the washing jar in, carries out fatlute mixture's washing.
Optionally, the pretreatment device further comprises a dosing system and a third pipeline, one end of the third pipeline is connected with the discharge end of the dosing system, the other end of the third pipeline is communicated with the water washing tank, and a dosing pump is mounted on the third pipeline.
By adopting the technical scheme, the dosing pump is adjusted, and under the action of the dosing pump, the liquid medicine in the dosing system enters the water washing tank along the third pipeline, so that oil sludge is oiled; the medicine system of design is convenient for add the medicine in the washing jar, and then is convenient for carry out abundant analysis to the crude oil in the fatlute.
Optionally, the oil-water separation device includes first homogeneity jar, first connecting pipe, three-phase centrifuge and oil storage tank, the feed inlet of first homogeneity jar with the liquid outlet of oil groove passes through arrange oil pipe intercommunication, the discharge gate of first homogeneity jar with three-phase centrifuge's inlet passes through first connecting pipe intercommunication, three-phase centrifuge's oil-out with the oil storage tank intercommunication, three-phase centrifuge's discharge gate below is provided with and is used for the first case that gathers materials that solid sediment was collected in the three-phase centrifuge.
By adopting the technical scheme, the oil-water mixture in the oil outlet tank flows into the first homogenizing tank along the oil discharge pipe, the oil-water mixture is micronized and homogenized in the first homogenizing tank, the homogenized oil-water mixture flows into the three-phase centrifuge along the oil discharge pipe, the three-phase centrifuge realizes the full separation of oil, mud and water in the oil-water mixed solution, the oil flows into the oil storage tank along the first connecting pipe, and mud mixed with the oil-water mixed solution falls into the first collecting box; the oil-water separation device carries out secondary separation to oil-water mixed liquid through the three-phase centrifuge, realizes the sufficient separation of oil, mud and water, and then improves the reuse rate of oil and mud in the oil-mud mixed liquid.
Optionally, solid-liquid separation equipment includes second homogeneity jar, second connecting pipe and vertical centrifuge, the mud pipe is kept away from deposit layering jar one end with the feed inlet intercommunication of second homogeneity jar, second connecting pipe one end with the bin outlet of second homogeneity jar is connected, the other end with vertical centrifuge's feed inlet intercommunication, vertical centrifuge's bin outlet below is provided with and is used for the second case that gathers materials that solid sediment was collected in the vertical centrifuge.
By adopting the technical scheme, the mud-water mixture in the sedimentation and stratification tank is discharged into the second homogenizing tank along the mud pipe, the mud-water mixture is homogenized in the second homogenizing tank, the homogenized mud-water mixture flows into the vertical centrifuge along the mud pipe, and the vertical centrifuge flows into the second collection box along the discharge port under the action of the vertical centrifuge; the designed solid-liquid separation device is convenient for separating mud-water mixtures, realizes the separation of mud and water, and improves the reuse rate of mud in the oil sludge mixed liquid.
Optionally, a first drain pipe is installed at the drain of three-phase centrifuge, a second drain pipe is installed at the drain of vertical centrifuge, and a sewage pool for sewage collection is installed jointly to the liquid outlet of first drain pipe and the liquid outlet of second drain pipe.
Through adopting above-mentioned technical scheme, the effluent water sump of design is convenient for concentrate the collection to the water in three-phase centrifuge and the vertical centrifuge, improves the reuse rate of water resource.
Optionally, the stirring assembly includes a stirrer for stirring the liquid medicine and the sludge mixed liquid.
Through adopting above-mentioned technical scheme, the stirring subassembly of design, the analytic efficiency of the crude oil in the improvement fatlute is improved to the liquid medicine of being convenient for, fatlute and water intensive mixing.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the designed oil sludge treatment system is convenient for separating the mixture of oil, water and sludge after washing by the washing device, the mixture of oil, water and sludge is separated into oil-water mixed liquid and sludge-water mixture, then the oil-water separation device and the solid-liquid separation device are used for realizing the full separation of oil, water and sludge, and further the recycling rate of the oil and sludge in the oil sludge mixed liquid is improved;
2. the designed oil sludge treatment system is convenient for fully stirring an oil sludge-water mixture through the helical blades, and realizes the layering of oil, sludge and water in the sedimentation layering tank; be convenient for strike off the mud layer of sediment layering jar lower floor through stirring vane, reduced the mud layer and in the pile up of sediment layering tank bottoms portion, and then be convenient for mud layer discharge sediment layering jar.
Drawings
Fig. 1 is a schematic view of the overall configuration of a sludge treatment system according to embodiment 1 of the present application;
fig. 2 is a schematic structural view of a sedimentation and stratification mechanism in the sludge treatment system according to embodiment 1 of the present application;
fig. 3 is a sectional view of fig. 2 in embodiment 1 of the present application.
Description of the reference numerals: 1. a pretreatment device; 11. a temporary storage pool; 12. a vibration mechanism; 121. a vibrating screen tank; 122. vibrating screen; 13. a dosing system; 14. a first pipeline; 15. a first lift pump; 16. a second pipeline; 161. a feeding section; 162. a flow dividing section; 163. a discharging section; 17. a second lift pump; 18. a third pipeline; 19. a dosing pump; 2. a water washing device; 21. a water washing mechanism; 211. a water washing tank; 212. a stirring assembly; 2121. a stirrer; 22. a sedimentation layering mechanism; 221. a sedimentation layering tank; 222. an oil outlet groove; 223. a motor; 224. a rotating shaft; 225. a squeegee; 226. an upper connecting rod; 227. a helical blade; 228. a lower connecting rod; 229. a stirring blade; 23. a support frame; 24. a sludge discharge pipe; 25. an oil discharge pipe; 26. a fourth pipeline; 3. an oil-water separation device; 31. a first homogenizing tank; 32. a three-phase centrifuge; 33. a first material collecting box; 34. an oil storage tank; 35. a first connecting pipe; 36. a first drain pipe; 4. a solid-liquid separation device; 41. a second homogenizing tank; 42. a vertical centrifuge; 43. a second material collecting box; 44. a second connecting pipe; 45. a second drain pipe; 5. a sewage tank.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses an oil sludge treatment system.
Referring to fig. 1, an oil sludge treatment system includes a pretreatment apparatus 1, a washing apparatus 2, an oil-water separation apparatus 3, a solid-liquid separation apparatus 4, and a sewage tank 5, which are sequentially provided; the oil sludge is subjected to primary screening, water washing, oil-water-solid separation, oil-water separation, solid-liquid separation and centralized collection of sludge, water and oil, so that the oil-water content of solid residues is reduced, the sludge and oil are recovered, and the sewage is collected in a centralized manner.
Referring to fig. 1, a pretreatment device 1 is used for primary screening of oil sludge, the pretreatment device 1 comprises a temporary storage pool 11, a first pipeline 14, a second pipeline 16, a vibration mechanism 12, a chemical adding system 13 and a third pipeline 18, and two stirrers 2121 are installed in the temporary storage pool 11 and used for stirring the oil sludge in the temporary storage pool 11; the vibrating mechanism 12 comprises a vibrating screen tank 121 and at least one vibrating screen 122, in this embodiment, two vibrating screens 122 are arranged, the two vibrating screens 122 are both mounted right above the vibrating screen tank 121 through bolts, and a discharge hole of each vibrating screen 122 is communicated with an inner cavity of the vibrating screen tank 121; the temporary storage tank 11 is communicated with the vibrating screen 122 through a first pipeline 14, the first pipeline 14 is connected with the temporary storage tank 11 and the feed inlets of the first pipeline 14 and the vibrating screen 122 through bolts, the temporary storage tank 11 is communicated with the vibrating screen 122, and a first lifting pump 15 is installed on the first pipeline 14 so that oil sludge in the temporary storage tank 11 can be pumped and discharged to the vibrating screen 122.
Referring to fig. 1 and 2, the washing apparatus 2 includes a washing mechanism 21 and at least three sets of sedimentation and stratification mechanisms 22 arranged in parallel, the washing mechanism 21 includes a washing tank 211 and a stirring assembly 212 for stirring oil sludge and liquid medicine in an inner cavity of the washing tank 211, the vibrating screen tank 121 is communicated with the sedimentation and stratification tank 221 through a second pipeline 16, the second pipeline 16 includes a feeding section 161, a discharging section 163 and a flow splitting section 162 located between the feeding section 161 and the discharging section 163, the flow splitting section 162 in this application may be 1, 2 or 3, however, the feeding section 161 is communicated with the discharging section 163, so that the vibrating screen tank 121 is communicated with the washing tank 211, and in order to avoid blockage of oil sludge during pumping and discharging, in this embodiment, the flow splitting section 162 is provided with 2, one end of the flow splitting section 162 is welded to the feeding section 161, the other end of the flow splitting section 161 is welded to the discharging section 163, and one end of the feeding section 161 far from the flow splitting section 162 is communicated with the vibrating screen tank 121 through a flange, and one end of the discharging section 163 far from the flow splitting section 162 is communicated with the flow splitting tank 211 through a flange; the two flow splitting sections 162 are respectively provided with a second lift pump 17 so as to conveniently pump and discharge the oil sludge in the vibrating screen tank 121 into the water washing tank 211; in addition, the dosing system 13 is communicated with the water washing tank 211 through a third pipeline 18, the third pipeline 18 is welded with the water washing tank 211, the third pipeline 18 is welded with the dosing system 13, and a dosing pump 19 is mounted on the third pipeline 18 so as to lift the liquid medicine into the water washing tank 211 through the dosing pump 19; the stirring module 212 includes a stirrer 2121 for stirring the liquid chemical and the sludge mixed liquid, and the stirrer 2121 is mounted on the water washing tank 211 so as to sufficiently mix the liquid chemical and the sludge and sufficiently analyze crude oil in the sludge.
Referring to fig. 2 and 3, in the present application, the number of the sedimentation layering mechanisms 22 may be 3, 4, or 5, in this embodiment, the sedimentation layering tank 221 is provided with 4, and the 4 sedimentation layering tanks 221 are alternately used, so as to ensure continuous operation of the oil sludge treatment system; the sedimentation layering mechanism 22 comprises a sedimentation layering tank 221, a rotating shaft 224, a scraper 225, an upper connecting rod 226, a lower connecting rod 228 and at least one helical blade 227; a fourth pipeline 26 is installed at a feed inlet of the sedimentation layering tank 221, one end, far away from the sedimentation layering tank 221, of the fourth pipeline 26 is connected with the water washing tank 211, so that the inner cavity of the sedimentation layering tank 221 is communicated with the inner cavity of the water washing tank 211, and a third lift pump is installed on the fourth pipeline 26; the rotating shaft 224 and the sedimentation layering tank 221 are coaxially arranged, the rotating shaft 224 is rotatably connected with the sedimentation layering tank 221, one end of the rotating shaft 224 extends out of one end of the sedimentation layering tank 221 and is provided with the motor 223, the rotating shaft 224 is connected with the motor 223 through a coupler, the motor 223 in the application adopts a variable frequency motor, one end of the rotating shaft 224, which is far away from the motor 223, is provided with the support frame 23, the support frame 23 is positioned in an inner cavity of the sedimentation layering tank 221, the support frame 23 is welded with the inner wall of the sedimentation layering tank 221, and the support frame 23 is rotatably connected with the rotating shaft 224; an oil outlet groove 222 for discharging an oil-water mixture is formed in the sedimentation layering tank 221, the oil outlet groove 222 is welded with the sedimentation layering tank 221, an oil inlet of the oil outlet groove 222 is communicated with an inner cavity of the sedimentation layering tank 221, the oil outlet groove 222 is arranged close to the top wall of the sedimentation layering tank 221, a scraper 225 is mounted on a rotating shaft 224, the scraper 225 is located in the inner cavity of the sedimentation layering tank 221, and the top wall of the scraper 225 is higher than the bottom wall of the oil outlet groove 222; the helical blades 227 are arranged below the scraper 225, in the embodiment, two helical blades 227 are arranged, the upper ends of the two helical blades 227 are welded with the upper connecting rod 226, the lower ends of the two helical blades 227 are welded with the lower connecting rod 228, the upper connecting rod 226 and the lower connecting rod 228 are arranged in parallel in the axial direction, and the upper connecting rod 226 is arranged along the radial direction of the rotating shaft 224; the stirring blade 229 is arranged between the lower connecting rod 228 and the supporting frame 23, and the stirring blade 229 is arranged close to the supporting frame 23, so as to accelerate the discharge of the sludge deposited at the bottom of the sedimentation layering tank 221; when oil sludge is mixed, the rotating shaft 224 rotates at a high speed under the action of the variable frequency stirrer to realize the full stirring of the oil sludge, after the stirring of the oil sludge is finished, the oil sludge is precipitated, the oil, the water and the mud are gradually layered in the precipitation process, the upper layer is an oil layer, the middle layer is a water layer, the lower layer is a mud layer, after the oil, the water and the mud are layered, the motor 223 is driven to rotate at a low speed to rotate, the rotating shaft 224 drives the scraper 225 to scrape the oil on the upper layer into the oil outlet groove 222 for collection, the water in the middle layer is discharged through the two water outlets in the middle layer and flows into the sewage pool 5 for recycling, the mud on the lower layer is conveyed to the solid-liquid separation device 4 through the conveying pump, and in the conveying process, the rotating shaft 224 drives the stirring blades 229 to rotate, the mud-water mixture in the precipitation layering tank 221 is stirred, the precipitation is prevented from being precipitated in the mud-water conveying process, and the mud-water mixture is discharged conveniently.
Referring to fig. 1, an oil discharge pipe 25 and a sludge discharge pipe 24 are installed on the settling and layering tank 221, one end of the oil discharge pipe 25 is communicated with an inner cavity of the oil outlet tank 222, the other end of the oil discharge pipe is connected with the oil-water separation device 3, and oil and water in an oil-sludge mixture are separated through the oil-water separation device 3; one end of the sludge discharge pipe 24 is communicated with the inner cavity of the sedimentation layering tank 221, the sludge discharge pipe 24 is arranged close to the bottom wall of the sedimentation layering tank 221, one end, far away from the sedimentation layering tank 221, of the sludge discharge pipe 24 is connected with the solid-liquid separation device 4, and the sludge and water in the sludge mixture are separated through the solid-liquid separation device 4.
Referring to fig. 1, the oil-water separation device 3 includes a first homogenizing tank 31, a first connecting pipe 35, a three-phase centrifuge 32, and an oil storage tank 34, wherein a feed inlet of the first homogenizing tank 31 is communicated with a liquid outlet of an oil outlet tank 222 through an oil discharge pipe 25, and two ends of the oil discharge pipe 25 are respectively connected with the first homogenizing tank 31 and the oil outlet tank 222 through flanges; the discharge gate of first homogeneity jar 31 and three-phase centrifuge 32's inlet are through first connecting pipe 35 intercommunication, install the fourth elevator pump on the first connecting pipe 35, so that transport the oil-water mixture in the homogeneity jar to three-phase centrifuge 32 in, three-phase centrifuge 32 adopts three-phase horizontal centrifuge in this embodiment, three-phase centrifuge 32's oil-out is through arranging oil pipe 25 and oil storage tank 34 intercommunication, three-phase centrifuge 32's discharge gate below is installed and is used for the first case 33 that gathers materials of solid sediment collection in three-phase centrifuge 32, three-phase centrifuge 32's outlet is through first drain pipe 36 and 5 intercommunications of effluent water sump, so that the concentrated collection of sewage.
Referring to fig. 1, the solid-liquid separation device 4 includes a second homogenizing tank 41, a second connecting pipe 44 and a vertical centrifuge 42, one end of the sludge discharge pipe 24 far away from the sedimentation layering tank 221 is communicated with a feed inlet of the second homogenizing tank 41, and two ends of the sludge discharge pipe 24 are respectively connected with the second homogenizing tank 41 and the sedimentation layering tank 221 through flanges; one end of the second connecting pipe 44 is connected with the discharge outlet of the second homogenizing tank 41, the other end is communicated with the feed inlet of the vertical centrifuge 42, a second material collecting box 43 for collecting solid slag in the vertical centrifuge 42 is arranged below the discharge outlet of the vertical centrifuge 42 so as to collect mud, and the liquid discharge outlet of the vertical centrifuge 42 is communicated with the sewage pool 5 through a second water discharge pipe 45 so as to collect sewage in a centralized manner; in this embodiment, a stirrer is installed in the second homogenizing tank 41 to prevent the mud water from precipitating in the second homogenizing tank 41, so that the mud water is conveniently conveyed to the vertical centrifuge 42 along the second connecting pipe 44; in addition, the first connecting pipe 35 and the second connecting pipe 44 are both provided with a pump body, so that the oil-water mixture and the mud-water mixture can be conveniently conveyed.
The implementation principle of an oil sludge treatment system in the embodiment of the application is as follows: in the process of sludge treatment, sludge stored in the temporary storage tank 11 is adjusted by the first lift pump 15, so that a sludge mixed liquid in the temporary storage tank 11 enters the vibrating screen 122, large particles and foreign matters in the sludge are separated, the separated sludge flows into the vibrating screen tank 121, the second lift pump 17 is adjusted so that the sludge in the vibrating screen tank 121 enters the washing tank 211, meanwhile, the chemical adding pump 19 is adjusted, a chemical liquid in the chemical adding system 13 is added into the washing tank 211 through the third pipeline 18, then, the sludge and the chemical liquid in the washing tank 211 are sufficiently stirred by the stirrer 2121 so as to sufficiently analyze crude oil in the sludge, the analyzed sludge enters the settling and layering tank 221 through the fourth pipeline 26, the motor 223 is adjusted, a driving shaft 224 of the motor 223 drives the rotating shaft 224 to rotate, the scraper 225, the helical blade 227 and the stirring blade 229, the rotating shaft 224 rotates at a high speed under the action of the variable frequency sludge stirrer, sufficient stirring is realized, after the stirring is completed, the oil and water layers are gradually layered, an upper layer is a middle layer, an upper layer is a homogeneous sludge layer, a lower layer, a homogeneous mixture flows into the first connecting pipe 32, the first connecting pipe for collecting a homogeneous sludge mixture, the first connecting pipe 222, the first connecting pipe for collecting oil-water-oil-water tank 31, the first connecting pipe 222, and a homogeneous sludge collecting tank 31, and a homogeneous sludge collecting tank 32 for collecting oil-water tank 32, and a homogeneous oil-water tank 32; the water in the middle layer is discharged through two water outlets in the middle and flows into a sewage pool 5 to be recycled; then the motor 223 is adjusted, the motor 223 drives the rotating shaft 224 to rotate, the rotating shaft 224 drives the stirring blade 229 to rotate at a medium speed, the mud-water mixture at the lower layer of the settling and layering tank 221 is divided and stirred, so that the mud-water mixture at the lower layer is conveyed into the second homogenizing tank 41 through the pump body, after the mud-water mixture is homogenized, the pump body on the second connecting pipe 44 is adjusted, the homogenized mud-water mixture is conveyed into the vertical centrifuge 42, under the action of the vertical centrifuge 42, mud in the vertical centrifuge 42 falls into the second collecting box 43, sewage flows into the sewage tank 5, and separation of oil, mud and water in the oil-mud mixture is achieved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. An oil sludge treatment system is characterized by comprising a pretreatment device (1), a water washing device (2), an oil-water separation device (3) and a solid-liquid separation device (4) which are arranged in sequence;
the pretreatment device (1) is used for primary screening of oil sludge;
the water washing device (2) comprises a water washing mechanism (21) and at least three groups of precipitation layering mechanisms (22) which are arranged in parallel;
the water washing mechanism (21) comprises a water washing tank (211) and a stirring assembly (212) for stirring oil sludge and liquid medicine in the inner cavity of the water washing tank (211), and the stirring assembly (212) is installed on the water washing tank (211);
the sedimentation layering mechanism (22) comprises a sedimentation layering tank (221), a rotating shaft (224), a scraper (225) and a motor (223);
a fourth pipeline (26) is installed at a feed inlet of the precipitation layering tank (221), one end, far away from the precipitation layering tank (221), of the fourth pipeline (26) is communicated with an inner cavity of the water washing tank (211), and an oil outlet groove (222) for discharging an oil-water mixture is formed in the precipitation layering tank (221);
the rotating shaft (224) and the sedimentation layering tank (221) are coaxially arranged, the rotating shaft (224) is rotatably connected with the sedimentation layering tank (221), the scraper (225) is installed on the rotating shaft (224), the scraper (225) is located in an inner cavity of the sedimentation layering tank (221), the top wall of the scraper (225) is higher than the bottom wall of the oil outlet tank (222), the motor (223) is installed at one end, extending out of the sedimentation layering tank (221), of the rotating shaft (224), and the motor (223) drives the rotating shaft (224) to rotate;
an oil discharge pipe (25) and a sludge discharge pipe (24) are mounted on the sedimentation layering tank (221), one end of the oil discharge pipe (25) is communicated with the inner cavity of the oil outlet groove (222), the other end of the oil discharge pipe is connected with the oil-water separation device (3), and the oil-water separation device (3) is used for oil-water separation in an oil-sludge mixture;
mud pipe (24) one end with the inner chamber intercommunication of sediment layering jar (221), just mud pipe (24) are close to the diapire setting of sediment layering jar (221), mud pipe (24) are kept away from sediment layering jar (221) one end with solid-liquid separation equipment (4) are connected, solid-liquid separation equipment (4) are arranged in the solid-liquid separation of fatlute mixture.
2. The sludge treatment system of claim 1 wherein: the sedimentation layering mechanism (22) further comprises an upper connecting rod (226), a lower connecting rod (228) and at least one spiral blade (227), the upper connecting rod (226), the lower connecting rod (228) and the spiral blade (227) are located in an inner cavity of the sedimentation layering tank (221), the upper connecting rod (226) and the lower connecting rod (228) are connected with the rotating shaft (224), the scraping plate (225) is located above the upper connecting rod (226), the upper connecting rod (226) and the lower connecting rod (228) are arranged in the radial direction of the rotating shaft (224), one end of the spiral blade (227) is connected with the upper connecting rod (226), and the other end of the spiral blade (227) is connected with the lower connecting rod (228).
3. The sludge treatment system of claim 2 wherein: be provided with support frame (23) in the inner chamber of sediment layering jar (221), support frame (23) with pivot (224) are kept away from motor (223) rotate and are connected, helical blade (227) are located support frame (23) top.
4. The sludge treatment system of claim 3 wherein: the rotating shaft (224) is provided with a stirring blade (229), and the stirring blade (229) is positioned between the spiral blade (227) and the support frame (23).
5. The sludge treatment system of claim 1 wherein: preprocessing device (1) is including keeping in pond (11), first pipeline (14), second pipeline (16) and vibration mechanism (12), vibration mechanism (12) are including shale shaker jar (121) and at least one shale shaker (122), shale shaker (122) install in directly over shale shaker jar (121), just the discharge gate of shale shaker (122) with the inner chamber intercommunication of shale shaker jar (121), keep in pond (11) with shale shaker (122) pass through first pipeline (14) intercommunication, install first elevator pump (15) on first pipeline (14), shale shaker jar (121) with settling layering jar (221) passes through second pipeline (16) intercommunication, install second elevator pump (17) on second pipeline (16).
6. The sludge treatment system of claim 1 wherein: preprocessing device (1) still includes medicine system (13) and third pipeline (18), third pipeline (18) one end with the discharge end of medicine system (13) is connected, the other end with wash jar (211) intercommunication, install medicine pump (19) on third pipeline (18).
7. The sludge treatment system of claim 1 wherein: oil-water separator (3) include first homogeneity jar (31), first connecting pipe (35), three-phase centrifuge (32) and oil storage tank (34), the feed inlet of first homogeneity jar (31) with the liquid outlet of oil groove (222) passes through oil drain pipe (25) intercommunication, the discharge gate of first homogeneity jar (31) with the inlet of three-phase centrifuge (32) passes through first connecting pipe (35) intercommunication, the oil-out of three-phase centrifuge (32) with oil storage tank (34) intercommunication, the discharge gate below of three-phase centrifuge (32) is provided with and is used for first collection case (33) that solid sediment was collected in three-phase centrifuge (32).
8. The sludge treatment system as claimed in claim 7, wherein the solid-liquid separation device (4) comprises a second homogenizing tank (41), a second connecting pipe (44) and a vertical centrifuge (42), one end of the sludge discharge pipe (24) far away from the sedimentation layering tank (221) is communicated with a feed inlet of the second homogenizing tank (41), one end of the second connecting pipe (44) is connected with a discharge outlet of the second homogenizing tank (41), the other end of the second connecting pipe is communicated with a feed inlet of the vertical centrifuge (42), and a second collecting box (43) for collecting solid residues in the vertical centrifuge (42) is arranged below the discharge outlet of the vertical centrifuge (42).
9. The sludge treatment system of claim 8, wherein a first drain pipe (36) is installed at a drain port of the three-phase centrifuge (32), a second drain pipe (45) is installed at a drain port of the vertical centrifuge (42), and a sewage pool (5) for sewage collection is installed at a liquid outlet of the first drain pipe (36) and a liquid outlet of the second drain pipe (45).
10. The sludge treatment system of claim 1 wherein the agitator assembly (212) comprises an agitator (2121) for agitating the chemical liquid and sludge mixture.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211168701.7A CN115477459B (en) | 2022-09-24 | Fatlute processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211168701.7A CN115477459B (en) | 2022-09-24 | Fatlute processing system |
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| CN115477459A true CN115477459A (en) | 2022-12-16 |
| CN115477459B CN115477459B (en) | 2024-06-21 |
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