CN219603419U - Oil sludge leaching system based on water circulation - Google Patents
Oil sludge leaching system based on water circulation Download PDFInfo
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- CN219603419U CN219603419U CN202321366820.3U CN202321366820U CN219603419U CN 219603419 U CN219603419 U CN 219603419U CN 202321366820 U CN202321366820 U CN 202321366820U CN 219603419 U CN219603419 U CN 219603419U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
An oil sludge leaching system based on water circulation comprises a primary leaching tank, a secondary leaching tank, a tertiary leaching tank, a vibrating screen, a solid-phase collecting tank, a leaching agent storage tank, a liquid temporary storage tank, a centrifugal separator, a flocculation precipitation tank and a filter press; the eluent storage tank is connected with the three-stage leaching tank, the three-stage leaching tank is connected with the second-stage leaching tank, and the second-stage leaching tank is connected with the first-stage leaching tank through a pipeline provided with a water pump; the first-stage leaching tank is connected with the second-stage leaching tank, the second-stage leaching tank is connected with the third-stage leaching tank, the third-stage leaching tank is connected with the vibrating screen, and the vibrating screen is connected with the solid-phase collecting tank through a pipeline provided with a slurry pump; the vibrating screen is connected with the flocculation precipitation tank through a pipeline; the first-stage leaching tank is connected with the liquid temporary storage tank through a pipeline provided with a water pump, and the liquid temporary storage tank is connected with the centrifugal separator through a pipeline provided with a water pump. The system can improve the utilization rate and the leaching efficiency of the leaching agent, enhance the eluting effect of the leaching agent on the oil sludge, realize the recycling of water resources and save the cost.
Description
Technical Field
The utility model relates to an oil sludge leaching system based on water circulation.
Background
Petroleum is used as a strategic resource, and along with the development of industry, petrochemical industry and related matched industry are more and more, and the pollution of the caused petroleum is more and more serious. In the course of petroleum exploration, exploitation, transportation, storage, etc., a large amount of petroleum is mixed with soil due to accidents, running out, drips, natural sedimentation, etc., and water and other impurities are mixed to form a mixture, which is called sludge. The water-based paint has the characteristics of stable property, poor fluidity, high water content and high content of toxic and harmful components.
At present, the total sludge of each large oil field in China is up to 3 multiplied by 10 6 Tons. The oil sludge has harm to natural environment and ecosystem, under natural condition, crude oil toxic substances and heavy metals in the oil sludge can permeate to the ground surface and underground under the action of gravity, soil hardening phenomenon is easy to occur, the oil sludge has genetic toxicity to ecological receptors, toxic effect is caused to soil microorganisms, activity of soil enzymes is reduced, and normal growth of surface vegetation is affected. In addition, petroleum hydrocarbons pass through the soil into groundwater, which threatens biological species.
The oil sludge treatment technology can be roughly classified into an extraction method, an incineration coking method, a biological method, a profile control treatment method, a three-phase separation method, a pyrolysis method, a thermochemical leaching method and the like. Each processing technique has its advantages, but also has processing limitations. For example, in a large-scale sludge treatment process, a large amount of extractant is required, resulting in an increase in cost; the investment cost of the incineration coking method is high; the biological method has long treatment period and is not suitable for large-scale treatment of the oil sludge with high oil content; the profile control treatment method has low universality on the oil sludge, the technology is not mature enough, and secondary pollution is easy to cause; the three-phase separation technology has lower treatment capacity and longer separation time; the pyrolysis method has high investment cost and complex treatment process.
The thermochemical leaching technology is an effective oil sludge disposal means, and can be used for eluting the oil adsorbed on the soil by adding chemical reagents, reducing the oil content of the soil, transferring the oil from a solid phase to a liquid phase, and conveniently recovering the oil in the liquid phase by means of centrifugal oil separation. However, this method has the disadvantages that: a large amount of water is required.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a water circulation-based oil sludge leaching system, which adopts a countercurrent leaching technology to mix and clean a leaching agent and oil sludge so as to achieve a better demulsification cleaning effect.
The technical scheme adopted for solving the technical problems is as follows:
an oil sludge leaching system based on water circulation comprises a primary leaching tank, a secondary leaching tank, a tertiary leaching tank, a vibrating screen, a solid-phase collecting tank, a leaching agent storage tank, a liquid temporary storage tank, a centrifugal separator, a flocculation precipitation tank and a filter press; the leaching agent storage tank is connected with the three-stage leaching tank, the three-stage leaching tank is connected with the two-stage leaching tank, and the two-stage leaching tank is connected with the first-stage leaching tank through a pipeline provided with a water pump; the primary leaching tank is connected with the secondary leaching tank, the secondary leaching tank is connected with the tertiary leaching tank, the tertiary leaching tank is connected with the vibrating screen, and the vibrating screen is connected with the solid-phase collecting tank through a pipeline provided with a slurry pump; the vibrating screen is connected with the flocculation precipitation tank through a pipeline; the primary leaching tank is connected with the liquid temporary storage tank through a pipeline provided with a water pump, and the liquid temporary storage tank is connected with the centrifugal separator through a pipeline provided with a water pump; the centrifugal separator is connected with the flocculation precipitation tank through a pipeline provided with a water pump, and the centrifugal separator is connected with the solid phase collection tank through a pipeline provided with a slurry pump; the flocculation precipitation tank is connected with a filter press through a pipeline provided with a slurry pump, and the filter press is connected with a three-stage leaching tank through a pipeline.
Further, an oil phase collecting tank is also arranged and is connected with the centrifugal separator through a pipeline provided with a water pump.
Further, a flocculant storage tank is also arranged and is connected with the flocculation precipitation tank through a pipeline provided with a water pump.
Further, the vibrating screen is connected with the flocculation precipitation tank through a pipeline provided with a water pump.
Further, the filter press is connected with a three-stage leaching tank through a pipeline provided with a water pump.
The beneficial effects of the utility model are as follows: the countercurrent leaching technology is adopted, so that the oil content in the leaching solution gradually reaches saturation, and the utilization rate and leaching efficiency of the leaching solution are improved; the three-stage leaching ensures that the oil content in the oil sludge fully enters the leaching solution, so that the oil content in the oil sludge is greatly reduced, and the eluting effect of the leaching solution on the oil sludge is enhanced; and through flocculation precipitation, the leaching waste liquid is treated in the system to obtain clean liquid, and the leaching liquid is prepared, so that the water resource in the system is recycled, and the cost is saved.
Drawings
FIG. 1 is a schematic frame diagram of a water circulation based sludge leaching system;
in the figure: 1. the device comprises a first-stage leaching tank, a second-stage leaching tank, a third-stage leaching tank, a 4, a vibrating screen, a 5, a solid phase collecting tank, a 6, a leaching agent storage tank, a 7, a liquid temporary storage tank, a 8, a centrifugal separator, a 9, an oil phase collecting tank, a 10, a flocculating agent storage tank, a 11, a flocculating settling tank, a 12 and a filter press.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
Referring to fig. 1, a sludge leaching system based on water circulation comprises a primary leaching tank 1, a secondary leaching tank 2, a tertiary leaching tank 3, a vibrating screen 4, a solid phase collecting tank 5, a leaching agent storage tank 6, a liquid temporary storage tank 7, a centrifugal separator 8, an oil phase collecting tank 9, a flocculating agent storage tank 10, a flocculating settling tank 11 and a filter press 12;
the eluent storage tank 6 is connected with the three-stage leaching tank 3, the three-stage leaching tank 3 is connected with the two-stage leaching tank 2, and the two-stage leaching tank 2 is connected with the first-stage leaching tank 1 through pipelines provided with water pumps respectively so as to convey the eluent; the primary leaching tank 1 is connected with the secondary leaching tank 2, the secondary leaching tank 2 is connected with the tertiary leaching tank 3, the tertiary leaching tank 3 is connected with the vibrating screen 4, the vibrating screen 4 is connected with the solid phase collecting tank 5 through a pipeline provided with a slurry pump, the vibrating screen 4 is connected with the flocculation precipitation tank 11 through a pipeline provided with a water pump, the slurry pump pumps the leached oil sludge to the next leaching tank for continuous leaching, solid-liquid separation is carried out by entering the vibrating screen 4, the oil sludge finally enters the solid phase collecting tank 5 for outward transportation, and filtrate obtained by the vibrating screen 4 enters the flocculation precipitation tank 11; the primary leaching tank 1 is connected with a liquid temporary storage tank 7 through a pipeline provided with a water pump, the leached waste liquid is collected in a concentrated mode, the liquid temporary storage tank 7 is connected with a centrifugal separator 8 through a pipeline provided with a water pump, and the leached waste liquid is sent into the centrifugal separator 8 to be subjected to oil, liquid and solid separation;
the oil phase collection tank 9 is connected with the centrifugal separator 8 through a pipeline provided with a water pump, the oil phase after centrifugal separation is recovered, the centrifugal separator 8 is connected with the flocculation precipitation tank 11 through a pipeline provided with a water pump, the centrifugal separator 8 is connected with the solid phase collection tank 5 through a pipeline provided with a slurry pump, and the obtained solid is transported outwards;
the flocculant storage tank 10 is connected with the flocculation precipitation tank 11 through a pipeline provided with a water pump, the flocculation precipitation tank 11 performs flocculation precipitation on filtrate and centrifuged liquid, the flocculation precipitation tank 11 is connected with the filter press 12 through a pipeline provided with a slurry pump, the filter press 12 is connected with the three-stage leaching tank 3 through a pipeline provided with a water pump, the filtrate after filter pressing enters the three-stage leaching tank 3 through a metering pump to prepare leaching solution, and the filter cake after filter pressing is transported outwards.
The working process comprises the following steps:
firstly, oil sludge enters a first-stage leaching tank 1 through a feed inlet, then sequentially enters a second-stage leaching tank 2 and a third-stage leaching tank 3, the oil content of the solid matters after leaching is little, the solid matters enter a vibrating screen 4, then enter a solid-phase collecting tank 5, the obtained solid matters are transported outwards, and filtrate enters a flocculation precipitation tank 11; adding a flocculating agent into a flocculation precipitation tank 11 to form alum blossom, taking away tiny particles and oil in the liquid to obtain clean liquid, enabling the floccule to enter a filter press 12 for filter pressing, carrying out outward treatment on the obtained filter cake, and enabling filtrate to enter a three-stage leaching tank 3 to prepare leaching liquor; the leacheate is reversely flowed from the three-stage leaching tank 3 to the first-stage leaching tank 1 in sequence, the oil content in the leacheate is gradually increased from the lowest to a saturated state, and the oil content in the oil sludge is eluted into the leacheate; after leaching, leaching waste liquid enters a liquid temporary storage tank 7 and then enters a centrifugal separator 8, leaching waste liquid contains oil, liquid and solid three phases, the solid phase is fine mud in a suspension state, waste oil obtained through centrifugal separation enters an oil phase collection tank 9, the liquid phase enters a flocculation precipitation tank 11 for flocculation precipitation, the flocculation is carried out after filter pressing by a filter press 12, the filter liquor after filter pressing enters a three-stage leaching tank 3 for preparation of leaching liquor, the liquid is recycled, and the solid phase enters a solid phase collection tank 5.
Claims (5)
1. An oil sludge leaching system based on hydrologic cycle, its characterized in that: comprises a first-stage leaching tank, a second-stage leaching tank, a third-stage leaching tank, a vibrating screen, a solid-phase collecting tank, a leaching agent storage tank, a liquid temporary storage tank, a centrifugal separator, a flocculation precipitation tank and a filter press; the leaching agent storage tank is connected with the three-stage leaching tank, the three-stage leaching tank is connected with the two-stage leaching tank, and the two-stage leaching tank is connected with the first-stage leaching tank through a pipeline provided with a water pump; the primary leaching tank is connected with the secondary leaching tank, the secondary leaching tank is connected with the tertiary leaching tank, the tertiary leaching tank is connected with the vibrating screen, and the vibrating screen is connected with the solid-phase collecting tank through a pipeline provided with a slurry pump; the vibrating screen is connected with the flocculation precipitation tank through a pipeline; the primary leaching tank is connected with the liquid temporary storage tank through a pipeline provided with a water pump, and the liquid temporary storage tank is connected with the centrifugal separator through a pipeline provided with a water pump; the centrifugal separator is connected with the flocculation precipitation tank through a pipeline provided with a water pump, and the centrifugal separator is connected with the solid phase collection tank through a pipeline provided with a slurry pump; the flocculation precipitation tank is connected with a filter press through a pipeline provided with a slurry pump, and the filter press is connected with a three-stage leaching tank through a pipeline.
2. The water circulation-based sludge leaching system of claim 1, wherein: the centrifugal separator is also provided with an oil phase collecting tank, and the oil phase collecting tank is connected with the centrifugal separator through a pipeline provided with a water pump.
3. The water circulation-based sludge leaching system according to claim 1 or 2, characterized in that: still be equipped with the flocculant holding vessel, the flocculant holding vessel is connected with the flocculation precipitation jar through the pipeline that is equipped with the water pump.
4. The water circulation-based sludge leaching system according to claim 1 or 2, characterized in that: the vibrating screen is connected with the flocculation precipitation tank through a pipeline provided with a water pump.
5. The water circulation-based sludge leaching system according to claim 1 or 2, characterized in that: the filter press is connected with the three-stage leaching tank through a pipeline provided with a water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366820.3U CN219603419U (en) | 2023-06-01 | 2023-06-01 | Oil sludge leaching system based on water circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321366820.3U CN219603419U (en) | 2023-06-01 | 2023-06-01 | Oil sludge leaching system based on water circulation |
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| Publication Number | Publication Date |
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| CN219603419U true CN219603419U (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321366820.3U Active CN219603419U (en) | 2023-06-01 | 2023-06-01 | Oil sludge leaching system based on water circulation |
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| CN (1) | CN219603419U (en) |
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2023
- 2023-06-01 CN CN202321366820.3U patent/CN219603419U/en active Active
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