CN111019694A - Inferior oil on-way magnetic treatment system - Google Patents
Inferior oil on-way magnetic treatment system Download PDFInfo
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- CN111019694A CN111019694A CN201911214029.9A CN201911214029A CN111019694A CN 111019694 A CN111019694 A CN 111019694A CN 201911214029 A CN201911214029 A CN 201911214029A CN 111019694 A CN111019694 A CN 111019694A
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- treatment system
- pipe
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- deacidification
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/02—Dewatering or demulsification of hydrocarbon oils with electrical or magnetic means
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
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- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses an on-way magnetic treatment system for inferior oil, which comprises an oil supply pipeline; a deacidification agent pipeline; the reaction device comprises a magnet assembly unit, a reaction device and a control device, wherein the magnet assembly unit comprises a frame and a plurality of magnets, the magnets are sequentially arranged on the frame along the length direction of the frame, and pipe penetrating gaps are reserved between every two adjacent magnets; a coil pipe, one end of which forms a liquid inlet and the other end of which forms a liquid outlet, wherein the coil pipe is coiled in a reciprocating manner and penetrates through the plurality of pipe penetrating gaps; wherein, the oil supply pipeline and the deacidification agent pipeline are connected with the liquid inlet. This technical scheme can the full play magnet dispersion, the effect of viscidity diamagnetic hydrocarbon falls, does benefit to the thorough deacidification of high sour oil, strengthens the deacidification effect, simultaneously, need not the consumption of extra magnetism preprocessing device and electric energy.
Description
Technical Field
The invention is used in the technical field of crude oil deacidification, and particularly relates to an inferior oil on-way magnetic treatment system.
Background
In the processing process of high acid value oil products such as crude oil, biomass oil and the like, a heating furnace, a fractionating tower and equipment pipelines are corroded, and the product quality is influenced.
In the prior art, the deacidification and deoxidation process flow aiming at the oil with high acid value is complex, a large amount of energy sources such as electric energy and the like are consumed, and the deacidification effect is poor.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art, and provides a low-quality oil on-way magnetic treatment system, which can fully exert the functions of magnet dispersion and viscosity reduction and diamagnetic hydrocarbons, is beneficial to thoroughly deacidifying high-acid oil and strengthening the deacidification effect, and simultaneously does not need an additional magnetic pretreatment device and electric energy consumption.
The technical scheme adopted by the invention for solving the technical problems is as follows: the on-way magnetic treatment system for inferior oil comprises
An oil supply conduit;
a deacidification agent pipeline;
reaction apparatus comprising
The magnet assembly unit comprises a frame and a plurality of magnets, the magnets are sequentially arranged on the frame along the length direction of the frame, and a pipe penetrating gap is reserved between every two adjacent magnets;
a coil pipe, one end of which forms a liquid inlet and the other end of which forms a liquid outlet, wherein the coil pipe is coiled in a reciprocating manner and penetrates through the plurality of pipe penetrating gaps;
wherein, the oil supply pipeline and the deacidification agent pipeline are connected with the liquid inlet.
Preferably, the frame adopts the nylon materials to print the shaping through 3D, the frame is equipped with a plurality of magnetic tanks along length direction, and is a plurality of the magnet is installed in proper order in the magnetic tank.
Preferably, the coil is wound in a reciprocating manner and passes through one of the tube penetrating gaps a plurality of times.
Preferably, the pipe diameter of the coil pipe is not more than 1 mm.
Preferably, the coil pipe is a polytetrafluoroethylene pipe.
Preferably, the reaction device further comprises a bottom plate and a cover plate, the plurality of magnet assembly units are arranged between the bottom plate and the cover plate in parallel, the coil pipe is coiled in a reciprocating manner and penetrates through pipe penetrating gaps of the plurality of magnet assembly units, the magnet assembly units are fixedly connected with the bottom plate and/or the cover plate, the magnet assembly units, the bottom plate and the cover plate form a reaction assembly, and a limiting part is arranged on the bottom plate between the adjacent magnet assembly units.
Preferably, the reaction device also comprises a box body, wherein a groove position capable of placing a plurality of layers of the reaction components is arranged on the box body along the height direction.
Preferably, the system also comprises an oil storage device, a deacidification agent storage device, a water bath tank and a thermostat, wherein the reaction device is arranged in the thermostat, the oil storage device is connected with the oil supply pipeline, and the oil storage device is positioned in the water bath tank or the oil supply pipeline penetrates through the water bath tank; the deacidification agent storage device is connected with the deacidification agent pipeline, and the deacidification agent storage device is positioned in the water bath tank or the deacidification agent pipeline penetrates through the water bath tank.
Preferably, the outer sides of the oil supply pipeline and the deacidification agent pipeline between the water bath tank and the constant temperature tank are respectively provided with a heat insulation layer.
Preferably, the deacidification agent pipeline is provided with a first pump, the bottom of the oil storage device is provided with a water inlet hole, the water inlet hole is connected with the water storage device through a water inlet pipe, and the water inlet pipe is provided with a second pump.
One of the above technical solutions has at least one of the following advantages or beneficial effects: when the device is used, inferior oil is input into the liquid inlet of the coil pipe through the oil supply pipeline, the deacidification agent is input into the liquid inlet of the coil pipe through the deacidification agent pipeline, the inferior oil and the deacidification agent are conveyed along the coil pipe together, diamagnetic hydrocarbon molecules can generate an additional magnetic moment opposite to an external magnetic field in the flowing process of liquid in the coil pipe, the magnetized molecules with the additional magnetic moment are forced to be oriented according to a certain arrangement mode, the original position is changed, the distance between the molecules is enlarged, and the viscosity reducing and dispersing effects are generated macroscopically. This technical scheme can the full play magnet dispersion, the effect of viscidity diamagnetic hydrocarbon falls, does benefit to the thorough deacidification of high sour oil, strengthens the deacidification effect, simultaneously, need not the consumption of extra magnetism preprocessing device and electric energy.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of one embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a reaction apparatus according to one embodiment shown in FIG. 1;
FIG. 3 is a block diagram of the multiple magnet assembly units on the base plate of the embodiment shown in FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic diagram of a reaction module according to one embodiment shown in FIG. 1;
FIG. 6 is a schematic structural diagram of the case of FIG. 1 according to one embodiment.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.
In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
An embodiment of the present invention provides an inferior oil on-way magnetic treatment system, which can be used for deacidification and viscosity reduction of inferior oil, and referring to fig. 1, the inferior oil on-way magnetic treatment system includes an oil supply pipeline 700, a deacidification agent pipeline 800 and a reaction device. Wherein, the oil supply pipeline 700 is used for conveying the inferior oil to the reaction device, and the deacidification agent pipeline 800 is used for conveying the deacidification agent to the reaction device, so that the inferior oil and the deacidification agent are mixed and deacidified and subjected to viscosity reduction in the reaction device.
Referring to fig. 2 and 3, the reaction device comprises a magnet assembly unit 100 and a coil 200, wherein the magnet assembly unit 100 is used for generating a magnetic field required for magnetic treatment, and the coil 200 is used for conveying high acid oil and deacidification agent to provide a reaction channel for magnetic treatment. When the anti-acid oil and deacidifying agent are used, the high-acid oil and the deacidifying agent are conveyed along the coil pipe 200, the diamagnetic hydrocarbon molecules can generate an additional magnetic moment opposite to an external magnetic field by the magnetic field in the process that liquid flows in the coil pipe 200, the magnetized molecules with the additional magnetic moment are forced to be oriented according to a certain arrangement mode, the original position is changed, the inter-molecular distance is enlarged, and the functions of viscosity reduction and dispersion are generated macroscopically. This technical scheme can the full play magnet dispersion, the effect of viscidity diamagnetic hydrocarbon falls, does benefit to the thorough deacidification of high sour oil, strengthens the deacidification effect, simultaneously, need not the consumption of extra magnetism preprocessing device and electric energy.
Specifically, referring to fig. 3, the magnet assembly unit 100 includes a frame 110 and a plurality of magnets 120, the magnets 120 may be permanent magnets or soft magnets, for example, in some embodiments, the magnets 120 include neodymium-iron-boron permanent magnets, the plurality of magnets 120 are sequentially mounted on the frame 110 along a length direction of the frame 110, a pipe penetrating gap 111 is left between adjacent magnets 120, and a magnetic field strength between the magnets exceeds 300mT on average. One end of the coil pipe 200 forms a liquid inlet 210, the other end forms a liquid outlet 220, the oil supply pipeline 700 and the deacidification agent pipeline 800 are both connected with the liquid inlet, and the liquid inlet 210 and/or the liquid outlet 220 can be provided with a control valve for controlling the reaction process. When in use, the high acid oil and the deacidification agent flow in from the liquid inlet 210 and flow out from the liquid outlet 220. The coil pipe 200 passes through a certain pipe penetrating gap 111 from one side of the magnet assembly unit 100 to the other side, then turns back and passes through the pipe penetrating gap 111 or the next pipe penetrating gap 111, and the coil pipe is coiled and passes through the pipe penetrating gaps 111 in such a way, so that a magnetic field exists in the flowing stroke of the coil pipe 200, the front and back magnetic fields of the magnet 120 are fully utilized, and the occupied space of equipment is saved. In the above embodiments, the coil 200 may be provided with one or more coils, and may be flexibly arranged according to specific use requirements.
The frame 110 provides positioning and supporting for the magnet 120, in some embodiments, referring to fig. 2, the frame 110 is provided with a plurality of magnetic slots along the length direction, the plurality of magnets 120 are sequentially installed in the magnetic slots, the magnet 120 can be inserted into or taken out of the magnetic slots from one side or two sides of the magnetic slots, the magnet 120 is more conveniently assembled and disassembled in the magnetic slots, and the positioning is more stable. The frame 110 is made of a nylon material and is formed through 3D printing, and the 3D printing and forming process is used for performing personalized accurate forming on a product, so that the processing difficulty of the product is reduced. Moreover, the nylon material resists general acid-base corrosion, and the nylon material has weaker influence on the magnetic field of the magnet 120, thereby ensuring the deacidification and viscosity reduction reaction effect.
In some embodiments, referring to fig. 3 and 4, the coil 200 is wound back and forth and passes through a tube penetrating gap 111 multiple times, so that the magnetic fields on the front and back sides of the magnet 120 are fully utilized, and meanwhile, the occupied space of the equipment is saved.
In some embodiments, the diameter of the coil 200 is not greater than 1mm, and the microchannel for deacidification and viscosity reduction is formed, the characteristic dimension of the microchannel is generally between 10 μm and 1mm, and the specific surface area of the fluid in the microreactor can reach 104-106 m2/m3The reaction temperature is 1-3 orders of magnitude higher than that of a conventional reactor, so that the microchannel reactor has the advantages of high-efficiency heat transfer and mass transfer capacities, continuous and controllable reaction process, small volume, low consumption, large increase of reaction volume and the like. But do notThat is, although the diameter of the channel is much smaller than the characteristic size of the conventional pipe reactor, it is still large for the reaction at the molecular level. The magnetic treatment technology can make diamagnetic hydrocarbon molecules generate additional magnetic moments opposite to the external magnetic field, and the magnetized molecules with the additional magnetic moments are forced to be oriented according to a certain arrangement mode, so that the original positions are changed, the inter-molecular distance is enlarged, and the functions of reducing viscosity and dispersing are generated macroscopically. The combination of magnetic treatment technology and micro-channel technology can strengthen the mass transfer effect from molecular level to micron level, and is favorable for some diamagnetic liquids such as crude oil, biomass oil and the like to perform deacidification and deoxidation reactions in the micro-channel. A on-the-way magnetic treatment micro-channel reactor is designed, the deacidification reaction of the high-acid inferior oil is simulated, the viscosity reduction and the reaction are simultaneously carried out, and the deacidification efficiency of the simulated high-acid inferior oil is greatly improved.
In some embodiments, the coil 200 is made of teflon, which is resistant to general acid-base corrosion, and the teflon has a weak influence on the magnetic field of the magnet 120, so as to ensure the deacidification and viscosity reduction effects.
In some embodiments, the magnetic coil assembly further comprises a bottom plate 300 and a cover plate 400, the plurality of magnet assembly units 100 are arranged between the bottom plate 300 and the cover plate 400 in parallel, the plurality of magnet assembly units 100 are arranged in parallel, the coil 200 is coiled in a reciprocating manner and penetrates through the tube penetrating gaps 111 of the plurality of magnet assembly units 100, the plurality of magnet assembly units 100 ensure the magnetic field strength along the coil 200, and ensure the deacidification and viscosity reduction reaction effects, the magnet assembly units are fixedly connected with the bottom plate and/or the cover plate, a limiting part 500 is arranged on the bottom plate 300 between the adjacent magnet assembly units 100, the bottom plate 300 and the cover plate 400 form a reaction assembly, and the reaction assembly forms a whole body, so that the storage, the transportation and the assembly are convenient, and the plurality of reaction assemblies are connected in series and parallel.
In some embodiments, referring to fig. 2 and 6, the reactor further includes a box 600, a slot 610 capable of placing a plurality of layers of reaction assemblies is disposed on the box 600 along a height direction, and the reaction assemblies can be inserted into or withdrawn from the box 600 from a side of the box 600, so that positioning and installation are more convenient. In addition, a plurality of reaction assemblies are arranged in layers in height, so that the occupied space of the whole reaction device is greatly saved.
Referring to fig. 1, in some embodiments, the system further includes an oil storage device 710, a deacidification agent storage device 810, water bath boxes 720 and 820, and a thermostat 900, wherein the reaction device is disposed in the thermostat 900, and when the thermostat 900 causes the poor oil and the deacidification agent to flow through the coil, the external environment temperature is maintained above a specific temperature, so as to ensure the deacidification and viscosity reduction effects. The oil storage device 710 is connected with the oil supply pipeline 700, the oil storage device 710 is positioned in the water bath tank 720 or the oil supply pipeline 700 penetrates through the water bath tank 720, so that the inferior oil is preheated by the water bath tank before entering the coil; the deacidification agent storage device 810 is connected with the deacidification agent pipeline 800, the deacidification agent storage device 810 is positioned in the water bath box 820 or the deacidification agent pipeline 800 penetrates through the water bath box 820, so that the deacidification agent is preheated by the water bath box before entering the coil. The preheated inferior oil and the deacidification agent can be mixed more quickly and uniformly, and the deacidification and viscosity reduction effects are better.
In order to avoid large temperature fluctuation of the poor oil and the deacidification agent in the pipeline transportation, referring to fig. 1, in some embodiments, the outer sides of the oil supply pipeline 700 and the deacidification agent pipeline 800 between the water bath tank and the constant temperature tank 900 are provided with insulating layers.
Referring to fig. 1, a first pump 840 is arranged on the deacidification agent pipeline 800, and the first pump 840 is used for conveying the deacidification agent from the deacidification agent storage device 810 to a coil.
Referring to fig. 1, the bottom of the oil storage device 710 is provided with a water inlet, the water inlet is connected with the water storage device 760 through a water inlet pipe 750, the water inlet pipe 750 is provided with a second pump 740, and the second pump 740 is used for conveying the poor oil from the oil storage device 710 to the coil pipe. In this embodiment, poor oil adopts the mode of water top oil to carry, and it has following advantage: 1. the water in the water storage device 760 is clean, and the second pump has good operation condition; 2. the second pump is prevented from being corroded by the inferior oil; 3. the water is delivered at normal temperature, the water is positioned at the bottom and the high-temperature oil is positioned at the top, the injection volume is quantitative and stable, and the oil temperature is not changed greatly. 4. The operation is convenient, water is discharged in the air discharge and exhaust, and no oil leakage and combustion danger exists. 5. The temperature of the pump is required to be not more than 60 ℃, and the influence of inferior oil on the normal work of the second pump is prevented.
Application example:
a reaction apparatus without a magnet was provided as a comparative example. Referring to fig. 1, the simulated high acid poor quality oil (deteriorated oxidized diesel oil containing 1.62mgKOH/g naphthenic acid) is transferred into an oil storage device 710, and then the oil storage device 710 is placed in a constant temperature water bath cabinet at 60 ℃ and is stabilized at constant temperature for 2 hours. And adjusting the rotating speed of the constant flow pump, injecting distilled water into the high-acid poor oil tank from the bottom of the oil storage device 710 at the flow rates of 5mL/min, 10mL/min and 15mL/min respectively, and injecting the high-acid poor oil into a reaction device which is placed in the constant temperature tank 900 and has the constant temperature of 60 ℃ for 2 hours through an oil supply pipeline 700 by adopting an oil-water top extraction method. And simultaneously, injecting the deacidification agent with the constant temperature of 60 ℃ into a reaction device through another advection pump according to the same flow value (agent/oil flow ratio is 1: 1) of the high-acid simulation oil to perform cocurrent deacidification reaction. And (3) introducing an emulsion formed by the high-acid inferior oil from the outlet of the reaction device and the deacidification agent into a glass measuring cylinder. And after the emulsion is completely demulsified, taking a certain amount of deacidified high-acid inferior oil to perform acid value analysis according to the GB/T264-83(2004) petroleum product acid value measurement method.
TABLE 1 data table of deacidification effect of simulated high-acid inferior oil
Table 260 ℃ simulated oil apparent viscosity units corresponding to different measurement rotation speeds: mPa.s
Remarking: using a Brookfield RVDV-III Ultra rheometer 0#Apparent viscosity value of rotor at 60 DEG C
As can be seen from the above tables 1 and 2, the on-way magnetic treatment system is applied to simulate high-acid inferior oil (deteriorated oxidized diesel oil containing 1.62mgKOH/g naphthenic acid) and deacidification agent (ethanol: ammonia water: 65:2:33 in volume ratio), and the co-current feeding reaction is carried out at the same flow rate of 10mL/min at the temperature of 60 ℃, so that the disposable acid value is reduced to 0.0927mgKOH/g which is far lower than the index of 0.5mgKOH/g high-acid inferior oil, the disposable reaction deacidification rate is as high as 94.3 percent, and is improved by 2.8 percent compared with the deacidification rate of the on-way magnet-free treatment system. The apparent viscosity of the oil product after the in-situ magnetic treatment is lower than that of the oil product without the magnetic treatment, and the deacidification efficiency is continuously enhanced on the basis of the microchannel reactor.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. Inferior oil is along journey magnetic treatment system, its characterized in that: comprises that
An oil supply conduit;
a deacidification agent pipeline;
reaction apparatus comprising
The magnet assembly unit comprises a frame and a plurality of magnets, the magnets are sequentially arranged on the frame along the length direction of the frame, and a pipe penetrating gap is reserved between every two adjacent magnets;
a coil pipe, one end of which forms a liquid inlet and the other end of which forms a liquid outlet, wherein the coil pipe is coiled in a reciprocating manner and penetrates through the plurality of pipe penetrating gaps;
wherein, the oil supply pipeline and the deacidification agent pipeline are connected with the liquid inlet.
2. The on-way magnetic treatment system for inferior oil according to claim 1, characterized in that: the frame adopts the nylon materials to print the shaping through 3D, the frame is equipped with a plurality of magnetic grooves along length direction, and is a plurality of the magnet is installed in proper order in the magnetic groove.
3. The on-way magnetic treatment system for inferior oil according to claim 1, characterized in that: the coil pipe is coiled in a reciprocating mode and penetrates through the pipe penetrating gap for multiple times.
4. The on-way magnetic treatment system for inferior oil according to claim 1, characterized in that: the pipe diameter of the coil pipe is not more than 1 mm.
5. The on-way magnetic treatment system for inferior oil according to claim 4, characterized in that: the coil pipe adopts a polytetrafluoroethylene pipe.
6. The on-way magnetic treatment system for inferior oil according to claim 1, characterized in that: the coil pipe is arranged between the bottom plate and the cover plate in parallel, the coil pipe is coiled in a reciprocating mode and penetrates through pipe penetrating gaps of the magnet assembly units, the magnet assembly units are fixedly connected with the bottom plate and/or the cover plate, the magnet assembly units, the bottom plate and the cover plate form a reaction assembly, and a limiting part is arranged between every two adjacent magnet assembly units on the bottom plate.
7. The on-way magnetic treatment system for inferior oil according to claim 6, characterized in that: the reaction component box comprises a box body, and is characterized in that a groove capable of containing a plurality of layers of reaction components is formed in the box body along the height direction.
8. The on-way magnetic treatment system for inferior oil according to claim 1, characterized in that: the reaction device is arranged in the constant temperature tank, the oil storage device is connected with the oil supply pipeline, and the oil storage device is positioned in the water bath tank or the oil supply pipeline penetrates through the water bath tank; the deacidification agent storage device is connected with the deacidification agent pipeline, and the deacidification agent storage device is positioned in the water bath tank or the deacidification agent pipeline penetrates through the water bath tank.
9. The on-way magnetic treatment system for inferior oil according to claim 8, characterized in that: and insulating layers are arranged on the outer sides of the oil supply pipeline and the deacidification agent pipeline between the water bath tank and the constant temperature tank.
10. The on-way magnetic treatment system for inferior oil according to claim 8, characterized in that: the deacidification agent pipeline is provided with a first pump, the bottom of the oil storage device is provided with a water inlet hole, the water inlet hole is connected with the water storage device through a water inlet pipe, and the water inlet pipe is provided with a second pump.
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| CN111019694B (en) | 2022-03-15 |
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