CN218202664U - Device for demulsification and dehydration of waste lubricating oil - Google Patents
Device for demulsification and dehydration of waste lubricating oil Download PDFInfo
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- CN218202664U CN218202664U CN202222905739.XU CN202222905739U CN218202664U CN 218202664 U CN218202664 U CN 218202664U CN 202222905739 U CN202222905739 U CN 202222905739U CN 218202664 U CN218202664 U CN 218202664U
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Abstract
The utility model relates to a used lubricating oil comprehensive utilization technical field, concretely relates to a device for used lubricating oil breakdown of emulsion dehydration. The device comprises a waste lubricating oil storage tank, a reaction kettle and a demulsifying and dehydrating oil product storage tank, wherein the bottom of the reaction kettle is connected with a circulating pump through a circulating pipeline, and the circulating pump is connected with the top of the reaction kettle through the circulating pipeline; an injection pipe is arranged in the reaction kettle, a nozzle is arranged at the bottom end of the injection pipe, and a spray hole is formed in the nozzle; the nozzle is positioned below a liquid level line in the reaction kettle; the injection pipe is communicated with a circulating pipeline, and a liquid phase discharging pipeline is arranged on the circulating pipeline between the circulating pump and the top of the reaction kettle. The utility model adopts the jet circulation loop to carry out demulsification and dehydration on the waste lubricating oil, thereby effectively improving the demulsification and dehydration effects of trace water in the waste lubricating oil; meanwhile, the ratio of the material circulation flow to the material feeding flow in the reaction kettle is controlled to destroy the oil-water film interface in the waste lubricating oil, so that the demulsifier can better improve the demulsification and dehydration effects of the waste lubricating oil.
Description
Technical Field
The utility model relates to a used lubricating oil comprehensive utilization technical field, concretely relates to a device for used lubricating oil breakdown of emulsion dehydration.
Background
In the using process, the lubricating oil is finally used as waste lubricating oil which can not be used continuously due to the effects of high-temperature catalytic oxidation and the influence of pollution impurities such as metal powder, moisture, dust and the like brought by the external environment and mechanical abrasion. The waste lubricating oil contains various substances harmful to human bodies, such as polycyclic aromatic hydrocarbon, polychlorinated biphenyl, heavy metal ultrafine particles and the like, and if the waste lubricating oil is incinerated or discarded, serious pollution to water sources, soil and air is caused. However, a significant amount of the most valuable lubricant base oil component of the waste mineral oil can be recovered for reuse by suitable processing. The waste lubricating oil is recycled, which is beneficial to saving resources, changing waste into valuable, preventing environmental pollution and having considerable economic and social benefits.
Generally, the recovery and regeneration of the used lubricating oil mainly comprises four steps: the first step removes insoluble impurities such as: abrasion of metal particles, dust, sludge, etc.; secondly, removing water and light components in the waste lubricating oil; thirdly, removing soluble impurities such as additives and the like in the waste lubricating oil; and the fourth step is to remove the non-ideal components from the used lubricating oil. The water in the waste lubricating oil is removed in the second step usually by standing sedimentation, electric dehydration, adsorption or distillation, but because of the existence of lubricating oil additives such as cleaning dispersant in the waste lubricating oil, the demulsification and dehydration effects of the waste lubricating oil are not ideal, the water content of the treated oil is about 1%, the water content is high, and the treatment energy consumption and the treatment cost are high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device for useless lubricating oil breakdown of emulsion dehydration adopts and sprays circulation circuit to carry out the breakdown of emulsion dehydration to useless lubricating oil, and it is big to useless lubricating oil breakdown of emulsion dehydration degree of difficulty to solve current device, the unsatisfactory problem of dehydration effect.
The device for demulsification and dehydration of the waste lubricating oil comprises a waste lubricating oil storage tank, a reaction kettle and an oil storage tank after demulsification and dehydration, wherein the bottom of the reaction kettle is connected with a circulating pump through a circulating pipeline, and the circulating pump is connected with the top of the reaction kettle through the circulating pipeline; an injection pipe is arranged in the reaction kettle, a nozzle is arranged at the bottom end of the injection pipe, and a spray hole is formed in the nozzle; the nozzle is positioned below a liquid level line in the reaction kettle; the injection pipe is communicated with a circulating pipeline, and a liquid phase discharging pipeline is arranged on the circulating pipeline between the circulating pump and the top of the reaction kettle.
Wherein:
the heating furnace is arranged outside the reaction kettle, the heating furnace can adjust the reaction temperature of the materials in the reaction kettle, and the heating furnace controls the temperature in the reaction kettle to be between 100 and 200 ℃.
The side wall of the reaction kettle is connected with a feeding pipeline, and the feeding pipeline is connected with a waste lubricating oil storage tank.
The top of the reaction kettle is connected with a gas phase outlet pipeline, a pressure regulating valve is arranged on the gas phase outlet pipeline, and the pressure regulating valve controls the pressure in the reaction kettle to be 0.2-0.5 MPa; the demulsification and dehydration effects of the waste lubricating oil in the reaction kettle are improved by controlling the pressure in the reaction kettle.
The outer wall of the circulating pipeline is wrapped with a heat tracing pipeline, the temperature of materials in the circulating pipeline can be adjusted by the heat tracing pipeline, and the temperature of the heat tracing pipeline is controlled to be between 150 and 250 ℃.
The feed line is also connected with a demulsifier storage tank through a pipeline.
And the liquid-phase discharge pipeline is connected with the demulsified and dehydrated oil product storage tank.
The nozzle is hemispherical, the aperture of the spray hole is 1-5mm, and the flow velocity of the liquid at the spray hole is 20-50m/s.
The height-diameter ratio of the reaction kettle is 2-5:1.
The circulating pump controls the ratio of the material circulating flow to the material feeding flow in the reaction kettle to be 50-200.
The utility model discloses a working process is:
pumping the waste lubricating oil (with the water content of 3-4 wt.%) in the waste lubricating oil storage tank and a demulsifier in the demulsifier storage tank into a feeding pipeline for mixing, wherein the using amount of the demulsifier is 0.5-2.0% of the mass of the waste lubricating oil, feeding the obtained mixed material into a reaction kettle, starting a circulating pump after the mixed material reaches a liquid level line, and circulating the mixed material in the whole device at a large flow rate through the circulating pipeline; the mixed material in the circulating pipeline enters the top of the reaction kettle to form a complete circulating route, the mixed material is conveyed to the nozzle by the jet pipe and is jetted out through the jet orifice, and the flow velocity of the liquid at the jet orifice is adjusted to be 20-50m/s; the mixed materials are sprayed out and simultaneously dispersed in the reaction kettle at high speed; the materials are divided and stirred through the spray holes, so that the integrity of an oil-water interface is damaged, and meanwhile, small liquid drops formed by dispersion of the spray holes generate impact force on the original materials in the reaction kettle, so that the stability of an oil-water interface film is further damaged, and the demulsification and dehydration effects on the waste lubricating oil are enhanced; in the circulation process, the generated gas is remained above the reaction kettle, the pressure in the reaction kettle is controlled to be between 0.2 and 0.5MPa through a pressure regulating valve, and the redundant gas is discharged through a gas phase outlet pipeline at the top of the reaction kettle. In the process, the temperature of the heat tracing pipeline is controlled between 150 ℃ and 250 ℃, and the temperature in the reaction kettle is controlled between 100 ℃ and 200 ℃ by the heating furnace; the heating furnace and the heat tracing pipeline can heat the waste lubricating oil material in the device, so that the removal of water in the waste lubricating oil is accelerated.
After the above circulation is carried out for multiple times, a part of oil is extracted from the liquid phase discharge pipeline, enters an oil storage tank for temporary storage after demulsification and dehydration, and the other part of oil enters an injection pipe in the reaction kettle for cyclic utilization; feeding is supplemented while oil is extracted, new waste lubricating oil is fed into the reaction kettle, the ratio of material circulation flow to material feeding flow in the reaction kettle is controlled to be 50-200 by a circulating pump, the feeding quantity of the waste lubricating oil is the same as the oil extraction quantity, and continuous production of the waste lubricating oil in the demulsification and dehydration process is realized.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model adopts the jet circulation loop to perform demulsification and dehydration on the waste lubricating oil, the mixed material in the circulation pipeline enters the top of the reaction kettle to form a complete circulation route, and the mixed material is conveyed to the nozzle by the jet pipe and is ejected out through the jet hole; the mixed materials are sprayed out and simultaneously dispersed in the reaction kettle at high speed; the materials are cut and stirred through the spray holes, the integrity of an oil-water interface is damaged, meanwhile, small liquid drops formed after the materials are dispersed through the spray holes generate impact force on the original materials in the reaction kettle, the stability of an oil-water interface film is further damaged, and the demulsification and dehydration effects of the waste lubricating oil are effectively improved.
In the circulation process of the utility model, the temperature of the heat tracing pipeline is controlled between 150 ℃ and 250 ℃, and the temperature in the reaction kettle is controlled between 100 ℃ and 200 ℃ by the heating furnace; the heating furnace and the heat tracing pipeline can heat waste lubricating oil materials in the device, so that the removal of water in the waste lubricating oil is accelerated.
Additionally, the utility model discloses a ratio of material circulation flow and material incoming flow is 50-200 in the circulating pump control reation kettle, and material incoming flow is the same with oil extraction volume, adjusts the liquid flow velocity of jet hole department in the reation kettle, destroys the oil water film interface in the used lubricating oil, makes the demulsifier can improve the effect of used lubricating oil breakdown of emulsion dehydration better, realizes the serialization production of used lubricating oil breakdown of emulsion dehydration process.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the injection tube, nozzle, and orifice of FIG. 1;
in the figure: 1. a heat tracing pipeline; 2. a liquid phase discharge pipeline; 3. a storage tank for the demulsified and dehydrated oil product; 4. a recycle line; 5. a circulation pump; 6. a gas phase outlet line; 7. a pressure regulating valve; 8. a liquid level line; 9. spraying a hole; 10. a heating furnace; 11. a nozzle; 12. an injection pipe; 13. a feed line; 14. a reaction kettle; 15. a demulsifier storage tank; 16. and a waste lubricating oil storage tank.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1-2, the device for demulsifying and dehydrating the used lubricating oil comprises a used lubricating oil storage tank 16, a reaction kettle 14 and a demulsified and dehydrated oil storage tank 3, wherein the bottom of the reaction kettle 14 is connected with a circulating pump 5 through a circulating pipeline 4, and the circulating pump 5 is connected with the top of the reaction kettle 14 through the circulating pipeline 4; an injection pipe 12 is arranged in the reaction kettle 14, a nozzle 11 is arranged at the bottom end of the injection pipe 12, and a spray hole 9 is formed in the nozzle 11; the nozzle 11 is positioned below the liquid level line 8 in the reaction kettle 14; the injection pipe 12 is communicated with a circulating pipeline 4, and a liquid phase discharging pipeline 2 is arranged on the circulating pipeline 4 between the circulating pump 5 and the top of the reaction kettle 14.
Wherein:
the heating furnace 10 is arranged outside the reaction kettle 14, and the heating furnace 10 controls the temperature in the reaction kettle 14 to be between 100 and 200 ℃.
The side wall of the reaction kettle 14 is connected with a feeding pipeline 13, and the feeding pipeline 13 is connected with a waste lubricating oil storage tank 16.
The top of the reaction kettle 14 is connected with a gas phase outlet pipeline 6, a pressure regulating valve 7 is arranged on the gas phase outlet pipeline 6, and the pressure regulating valve 7 controls the pressure in the reaction kettle 14 to be 0.2-0.5 MPa.
The outer wall of the circulation pipeline 4 is wrapped with a heat tracing pipeline 1, and the temperature of the heat tracing pipeline 1 is controlled between 150 ℃ and 250 ℃.
The feed line 13 is also connected to a demulsifier storage tank 15 through a pipeline.
And the liquid-phase discharge pipeline 2 is connected with an oil product storage tank 3 after demulsification and dehydration.
The nozzle 11 is hemispherical, the aperture of the spray hole 9 is 1-5mm, and the liquid flow speed at the spray hole 9 is 20-50m/s.
The height-diameter ratio of the reaction kettle 14 is 2-5:1.
The circulating pump 5 controls the ratio of the material circulating flow to the material feeding flow in the reaction kettle 14 to be 50-200.
The process of demulsifying and dehydrating the waste lubricating oil comprises the following steps:
pumping the waste lubricating oil (with the water content of 3 wt.%) in the waste lubricating oil storage tank 16 and a demulsifier in the demulsifier storage tank 15 into the feeding pipeline 13 for mixing, wherein the using amount of the demulsifier is 1.0% of the mass of the waste lubricating oil, feeding the obtained mixed material into the reaction kettle 14, starting the circulating pump 5 after the mixed material reaches a liquid level line 8, and circulating the mixed material in the whole device at a large flow rate through the circulating pipeline 4; the mixed material in the circulating pipeline 4 enters the top of the reaction kettle 14 to form a complete circulating route, the mixed material is conveyed to the nozzle 11 by the injection pipe 12 and is injected out through the injection hole 9, and the flow rate of the liquid at the injection hole 9 is adjusted to be 20-50m/s; the mixed materials are sprayed out and simultaneously dispersed in the reaction kettle 14 at high speed; the materials are divided and stirred through the spray holes 9, the integrity of an oil-water interface is damaged, meanwhile, small liquid drops formed by dispersion through the spray holes 9 generate impact force on the original materials in the reaction kettle 14, the stability of an oil-water interface film is further damaged, and the demulsification and dehydration effects on the waste lubricating oil are enhanced; in the circulation process, the generated gas is reserved above the reaction kettle 14, the pressure in the reaction kettle 14 is controlled to be 0.2-0.5MPa through the pressure regulating valve 7, and the redundant gas is discharged through the gas phase outlet pipeline 6 at the top of the reaction kettle 14. In the process, the temperature of the heat tracing pipeline 1 is controlled between 150 ℃ and 250 ℃, and the temperature in the reaction kettle 14 is controlled between 100 ℃ and 200 ℃ by the heating furnace 10; the heating furnace 10 and the heat tracing pipeline 1 can provide heating for the waste lubricating oil materials in the device, so that the removal of water in the waste lubricating oil is accelerated.
After the above circulation is repeated for many times, a part of oil is extracted from the liquid phase discharge pipeline 2, enters the demulsifying and dehydrating oil storage tank 3 for temporary storage (the water content of the demulsified and dehydrating oil is detected to be less than 0.1 wt.%), and the other part of oil enters the injection pipe 12 in the reaction kettle 14 for cyclic utilization; the method comprises the steps of supplementing and feeding oil products while extracting, supplementing new waste lubricating oil into a reaction kettle 14, controlling the ratio of material circulation flow to material feeding flow in the reaction kettle 14 to be 50-200 by a circulating pump 5, wherein the feeding amount of the waste lubricating oil is the same as the oil product extraction amount, and continuous production of the waste lubricating oil in the demulsification and dehydration process is realized.
Claims (9)
1. The utility model provides a device for useless lubricating oil breakdown of emulsion dehydration, includes useless lubricating oil storage tank (16), reation kettle (14) and breakdown of emulsion dehydration back oil storage tank (3), its characterized in that: the bottom of the reaction kettle (14) is connected with a circulating pump (5) through a circulating pipeline (4), and the circulating pump (5) is connected with the top of the reaction kettle (14) through the circulating pipeline (4); a jet pipe (12) is arranged in the reaction kettle (14), a nozzle (11) is arranged at the bottom end of the jet pipe (12), and a jet hole (9) is formed in the nozzle (11); the nozzle (11) is positioned below the liquid level line (8) in the reaction kettle (14); the injection pipe (12) is communicated with a circulating pipeline (4), and a liquid phase discharging pipeline (2) is arranged on the circulating pipeline (4) between the circulating pump (5) and the top of the reaction kettle (14).
2. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 1, wherein: the heating furnace (10) is arranged outside the reaction kettle (14).
3. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 1, wherein: the side wall of the reaction kettle (14) is connected with a feeding pipeline (13), and the feeding pipeline (13) is connected with a waste lubricating oil storage tank (16).
4. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 1, wherein: the top of the reaction kettle (14) is connected with a gas phase outlet pipeline (6), and the gas phase outlet pipeline (6) is provided with a pressure regulating valve (7).
5. The apparatus for demulsifying and dehydrating the used lubricating oil according to claim 1, wherein: the outer wall of the circulating pipeline (4) is wrapped with a heat tracing pipeline (1).
6. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 3, wherein: the feed line (13) is also connected with a demulsifier storage tank (15) through a pipeline.
7. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 1, wherein: and the liquid-phase discharge pipeline (2) is connected with the demulsified and dehydrated oil product storage tank (3).
8. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 1, wherein: the nozzle (11) is hemispherical, and the aperture of the spray hole (9) is 1-5mm.
9. The apparatus for demulsifying and dehydrating a used lubricating oil according to claim 1, wherein: the height-diameter ratio of the reaction kettle (14) is 2-5:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222905739.XU CN218202664U (en) | 2022-10-31 | 2022-10-31 | Device for demulsification and dehydration of waste lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222905739.XU CN218202664U (en) | 2022-10-31 | 2022-10-31 | Device for demulsification and dehydration of waste lubricating oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218202664U true CN218202664U (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222905739.XU Active CN218202664U (en) | 2022-10-31 | 2022-10-31 | Device for demulsification and dehydration of waste lubricating oil |
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|---|---|
| CN (1) | CN218202664U (en) |
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- 2022-10-31 CN CN202222905739.XU patent/CN218202664U/en active Active
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