CN110484295B - Aging oil recovery treatment process - Google Patents
Aging oil recovery treatment process Download PDFInfo
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- CN110484295B CN110484295B CN201910807750.2A CN201910807750A CN110484295B CN 110484295 B CN110484295 B CN 110484295B CN 201910807750 A CN201910807750 A CN 201910807750A CN 110484295 B CN110484295 B CN 110484295B
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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
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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
- C10G33/06—Dewatering or demulsification of hydrocarbon oils with mechanical means, e.g. by filtration
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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
- C10G33/08—Controlling or regulating
Abstract
The invention discloses an aging oil recovery treatment process, which belongs to the technical field of aging oil treatment and comprises the following steps of, the solid-liquid separator and the oil-water separator are mutually matched for use, so that oil-water separation is carried out on an oil-water mixture after solid-liquid separation, an ultrasonic cleaning device and a high-pressure flushing device are additionally arranged in the oil-water separator, and ultrasonic cleaning is utilized, the cavitation effect in the oil-water separator is realized to a certain extent, and the oil-water separator has the mechanical stirring effect and the thermal effect, so that the demulsification operation of the oil-water mixture is realized, simultaneously, the circulating high-pressure impact of the oil-water mixture is matched, the mutual impact degree of ions in the oil-water separator is further improved, thereby effectively improving the demulsification efficiency and the demulsification dehydration amount, realizing the thoroughness of oil-water separation and effectively improving the recovery treatment effect of crude oil.
Description
Technical Field
The invention relates to the technical field of aging oil treatment, in particular to an aging oil recovery treatment process.
Background
With the continuous development of oil and gas field development, a large amount of aging dirty oil which is difficult to treat appears in each large oil field in succession, so that the waste of the treatment capacity of equipment is caused, and meanwhile, hidden dangers are brought to the system. The aged sump oil is mainly derived from fracturing flowback fluid, drilling waste fluid, well flushing flowback waste fluid and acidizing waste fluid, and sump oil in a sewage/sump oil recovery tank, which are aged sump oil which can cause the conventional oilfield equipment to be difficult to treat.
The aged sump oil has complex components and contains a plurality of clay with stronger conductivity, FeS and other mechanical impurities. These substances often cause the water content of purified oil of a dehydration system to exceed the standard or the water quality of sewage after dehydration to exceed the standard, and also increase the difficulty of crude oil sedimentation and dehydration. In the prior art, various operation waste liquids such as fracturing flowback fluid and the like and oil field oil-containing wastewater containing polymer are subjected to harmless treatment by adopting a treatment method combining ultrasonic induction catalysis with various technologies such as a high-efficiency demulsification flocculant, an electrochemical flocculation combined micro-air flotation process, PTFE charged membrane fine filtration and the like. So as to reach the recycling or discharging standard and reduce the damage to the environment.
A large number of researches and practical experiences prove that the efficient recovery of the crude oil in the aging oil is difficult to realize by a single recovery treatment method, wherein for an ultrasonic hot water washing treatment process, oil-water separation is realized only by virtue of the cavitation effect of ultrasonic waves, and the explosion rate of oil-water mixed molecules in the crude oil and the demulsification dehydration rate are required to be improved.
Therefore, a skid-mounted aging oil recovery treatment process is provided to effectively improve the demulsification effect of oil-water mixtures in the prior art.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an aging oil recovery treatment process, which realizes oil-water separation of an oil-water mixture after solid-liquid separation by the mutual cooperation of a solid-liquid separator and an oil-water separator, is additionally provided with an ultrasonic cleaning device and a high-pressure flushing device in the oil-water separator, utilizes ultrasonic hot water washing to realize the cavitation effect in the oil-water separator to a certain extent, has mechanical stirring effect and thermal effect to realize the emulsion breaking operation of the oil-water mixture, and is matched with the circulating high-pressure impact of the oil-water mixture to further facilitate the improvement of the mutual impact degree between ions in the oil-water separator, thereby effectively improving the emulsion breaking efficiency and emulsion breaking dehydration quantity, realizing the thoroughness of oil-water separation and effectively improving the recovery treatment effect of crude oil.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An aging oil recovery treatment process comprises the following steps:
s1, separating impurities of the aging oil mixture, conveying the aging oil to a rotary picking cage in a sorting chamber at the upper end of the solid-liquid separator through a mechanical feeding hopper, repeatedly washing the aging oil by the rotary picking cage at high pressure, and enabling oil, water, silt and pebbles in the washed aging oil to fall to the lower part of the solid-liquid separator through the rotary picking cage to realize impurity separation;
s2, carrying out flotation on the aged oil mixture after impurities are separated, and repeatedly operating the processes of heating, jet flow air explosion and the like, so that most of oil in the aged oil mixture is floated, silt and pebbles are precipitated at the bottom of a solid-liquid separator and can be hung out by a scraper machine and sent into a discharge hopper to be discharged, thereby realizing the solid-liquid separation of the aged oil mixture and obtaining an oil-water mixture;
s3, separating an oil-water mixture, namely pumping the floated aging oil-water mixture into an oil-water separator through a first pump body, heating to raise the temperature to 40-70 ℃, installing an ultrasonic cleaning device at the oil-water separator, and realizing oil-water separation of the oil-water mixture by utilizing ultrasonic hot water washing;
and S4, pumping the oil-water mixture which is fully separated and broken in the oil-water separator into a settling tank through a second pump body, standing for 0.5-1h, and layering oil, water and fine silt to obtain the crude oil on the upper layer.
Further, in the step S1, before impurity separation of the aging oil mixture, a pulverizer is used to moderately crush and cut the aging oil mixture, the pulverizer cuts and decomposes larger impurities in the aging oil mixture, the size of particles of the impurities is reduced, and the moderately crushed aging oil mixture is loaded into a loading hopper, so that the impurity, oil and water and some small-particle sediment can be sufficiently separated by the rotary picking cage.
Further, high-pressure spray set is installed to the top of cage is picked up in the rotation in S1, high-pressure spray set includes high-pressure squirt and spraying system, spraying system is by a plurality of horizontal shower that set up and reachs the spray nozzle at the shower lower extreme and constitute, washes away the particulate matter on the oil with ageing oil, is favorable to the solid-liquid separation in the ageing oil mixture, and impurity (plastics, debris, big gravel etc.) after the preliminary treatment brings into rotatory cage anterior segment of picking up to make things convenient for follow-up manual work to pick up.
Furthermore, a separation cavity is arranged in the oil-water separator in the step S3, an opening is formed in the top of the separation cavity, the demulsifier can be added conveniently, an oil inlet pipe and an oil discharge pipe are respectively arranged on the side walls of the left upper end and the right lower end of the oil-water separator, and the oil inlet pipe and the oil discharge pipe are respectively connected with the first pump body and the second pump body, so that oil-water mixture can be pumped in and out.
Further, ultrasonic cleaning device includes supersonic generator 2 and inlays to establish a plurality of ultrasonic transducer who installs in oil water separator inside in S3, and a plurality of ultrasonic transducer 'S input and supersonic generator electricity are connected, utilize ultrasonic cleaning function and oil water separator to cooperate, utilize the frequency to be higher than 20 KHz' S sound wave to act on the cavitation effect that oil water mixture produced, when the ultrasonic wave propagates in oil water mixture medium, still have certain mechanical stirring effect and heat effect, be favorable to oil water separation more abundant.
Furthermore, the separation chamber is close to fixedly connected with foam metal flow distribution plate on the inner wall of upper end, it is located the top of foam metal flow distribution plate to advance the oil pipe, oil water separator's top fixed mounting has the high pressure washing unit who corresponds with foam metal flow distribution plate position, and high pressure washing unit realizes upwards taking out and the downward high pressure blowout to the oil water mixture in the oil water separator, and the oil water mixture after the blowout carries out the collision mutually with foam metal flow distribution plate, is favorable to producing a large amount of foams when high pressure impact and collision mutually, and has increased the mutual collision probability in the oil water mixture, has strengthened the cavitation of supersound to demulsification efficiency and demulsification dehydration volume have been accelerated, oil water separation's thoroughness has been realized.
Further, high pressure washing unit includes the mounting panel through screw fixed mounting in oil water separator upper end both sides, fixed cover is equipped with first standpipe and second standpipe on the mounting panel respectively, the lower extreme of first standpipe runs through one of them mounting panel, foamed metal flow distribution plate in proper order and extends to the bottom department in oil water separation chamber, the lower extreme of second standpipe runs through another mounting panel and fixedly connected with sprays the mechanism, it is located the top of foamed metal flow distribution plate to spray the mechanism, the top of first standpipe and second standpipe is connected through the high-pressure pump body, the high-pressure pump body passes through fixed plate fixed connection in the upper end of one of them mounting panel, through mutually supporting of first standpipe and second standpipe and high-pressure pump body, realizes the continuous upwards twitching of the oil water mixture circulation in the oil water separator and impactes downwards, and sprays the mechanism and then further enlarges the oil water mixture of downpounding and the foam metal flow distribution plate between setting up The contact area.
Further, the spraying mechanism comprises a spraying pipe fixedly connected to the lower end of the second vertical pipe, a plurality of high-pressure spray heads are fixedly mounted at the lower end of the spraying pipe, and the high-pressure spray heads are located above the foamed metal flow distribution plate.
Further, the cover is equipped with heating device on oil water separator's the outer end lateral wall, heating device establishes the cavity heating cabinet in oil water separator outer end including fixed cover, all cut the installation cavity on the inner wall all around of cavity heating cabinet, it is a plurality of electromagnetic heating coil is all installed to the installation cavity, and installs metal heat conduction stratum reticulare on the lateral wall of a plurality of installation cavities, through the electromagnetic heating principle, realizes heating oil water separator's lateral wall, and oil water separator's outer wall adopts heat-resisting and heat conduction material to make to the realization is to the inside heating effect that plays of oil water separator.
Further, equal fixedly connected with links up the fishplate bar, a plurality of on the lateral wall around the last lower extreme of cavity heating cabinet all excavates on the lateral wall of linking up the fishplate bar, and has all seted up a plurality of mounting holes in the mounting groove, and the mounting hole passes through mounting screw and oil water separator's lateral wall fixed connection.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme uses through solid-liquid separation machine and oil water separator's mutually supporting, the realization carries out water oil separating to the water oil mixture after the solid-liquid separation, add in water oil separator and establish ultrasonic cleaning device and high pressure washing unit, utilize ultrasonic cleaning, realize the inside cavitation effect of water oil separator to a certain extent, have mechanical stirring effect and fuel effect simultaneously, realize water oil mixture's breakdown of emulsion operation, the circulation high pressure impact of cooperation water oil mixture simultaneously, further be favorable to having improved mutual striking degree and dynamics between the inside each ion of water oil separator, thereby effectively improve its breakdown of emulsion rate and breakdown of emulsion dehydration rate, realize water oil separating's thoroughness to a certain extent, effectively improve the recovery processing effect of crude oil.
(2) The separation chamber is close to fixedly connected with foam metal flow distribution plate on the inner wall of upper end, foam metal flow distribution plate is porous metal sheet, high pressure washing unit cooperation foam metal flow distribution plate, the realization is upwards taken out and is spout to the high pressure downwards to the oil water mixture in the oil water separator, collide with foam metal flow distribution plate after the blowout, be favorable to shunting and producing a large amount of foams when high pressure impact collides mutually, and increased each ionic's in the oil water mixture collision probability each other, the cavitation of supersound has been reinforceed, thereby emulsion breaking efficiency and breakdown of emulsion dehydration volume have been accelerated, oil water separation's thoroughness has further been improved.
(3) The cover is equipped with heating device on oil water separator's the outer end lateral wall, heating device establishes the cavity heating cabinet in oil water separator outer end including fixed cover, the installation cavity has all been dug on the inner wall all around of cavity heating cabinet, electromagnetic heating coil is all installed to a plurality of installation intracavity, and install metal heat conduction stratum reticulare on the lateral wall of a plurality of installation cavities, through the electromagnetic heating principle, the realization heats oil water separator's lateral wall, oil water separator's outer wall adopts heat-resisting and heat conduction material to make, thereby the realization is to the inside heating effect that plays of oil water separator.
Drawings
FIG. 1 is a principal process flow diagram of the present invention;
FIG. 2 is a schematic perspective view of the oil-water separator according to the present invention;
FIG. 3 is a schematic front view of the oil-water separator according to the present invention;
fig. 4 is a schematic perspective view of the metal foam flow distribution plate of the present invention;
fig. 5 is a schematic perspective view of the hollow heating box of the present invention.
The reference numbers in the figures illustrate:
1 separation chamber, 2 ultrasonic generator, 3 ultrasonic transducer, 4 advance oil pipe, 5 arrange oil pipe, 6 mounting panels, 7 first standpipe, 8 second standpipe, 9 foam metal flow distribution plate, 10 fixed plates, 11 high-pressure pump bodies, 12 shower pipes, 13 high-pressure shower nozzles, 14 hollow heating cabinet, 15 linking plate, 16 mounting screws, 17 electromagnetic heating coil, 18 metal heat conduction net layers, 19 mounting holes.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a process for recycling aging oil includes the following steps:
s1, separating impurities of the aging oil mixture, conveying the aging oil to a rotary picking cage in a sorting chamber at the upper end of the solid-liquid separator through a mechanical feeding hopper, repeatedly washing the aging oil by the rotary picking cage at high pressure, and enabling oil, water, silt and pebbles in the washed aging oil to fall to the lower part of the solid-liquid separator through the rotary picking cage to realize impurity separation;
s2, carrying out flotation on the aged oil mixture after impurities are separated, and repeatedly operating the processes of heating, jet flow air explosion and the like, so that most of oil in the aged oil mixture is floated, silt and pebbles are precipitated at the bottom of a solid-liquid separator and can be hung out by a scraper machine and sent into a discharge hopper to be discharged, thereby realizing the solid-liquid separation of the aged oil mixture and obtaining an oil-water mixture;
s3, separating an oil-water mixture, pumping the floated aging oil-water mixture into an oil-water separator through a first pump body, heating to raise the temperature, wherein the temperature is 40-70 ℃, preferably 60 ℃, an ultrasonic cleaning device is arranged at the oil-water separator, and the oil-water separation of the oil-water mixture is realized by utilizing ultrasonic hot water washing;
and S4, pumping the oil-water mixture which is fully separated and broken in the oil-water separator into a settling tank through a second pump body, standing for 0.5-1h, and layering oil, water and fine silt to obtain the crude oil on the upper layer.
Adopt the rubbing crusher to carry out the moderate degree to ageing oil mixture and smash the cutting processing before the impurity separation of ageing oil mixture in S1, the rubbing crusher cuts the great impurity in the ageing oil mixture and decomposes, reduce the particulate matter size of impurity, high-pressure spray set is installed to the top of cage is picked up in the rotation in S1, high-pressure spray set includes high-pressure squirt and spraying system, spraying system comprises the shower of a plurality of horizontal settings and sets up and reachs the shower nozzle at the shower lower extreme, this is prior art, pick up the cooperation of cage through spraying system and rotation, realize high strength washing operation, accomplish solid-liquid separation.
Referring to fig. 2, in the oil-water separator of S3, a separation chamber 1 is provided, and the side walls of the left, right, upper and lower ends of the oil-water separator are respectively provided with an oil inlet pipe 4 and an oil discharge pipe 5, and the oil inlet pipe 4 and the oil discharge pipe 5 are respectively connected with the first pump body and the second pump body which are not marked in the figure to realize the suction and the extraction of the oil-water mixture, the ultrasonic cleaning device in S3 comprises an ultrasonic generator 2 and a plurality of ultrasonic transducers 3 which are embedded and arranged in the oil-water separator, the input ends of a plurality of ultrasonic transducers 3 are electrically connected with an ultrasonic generator 2, the ultrasonic cleaning function is utilized to be matched with an oil-water separator, the acoustic wave with the frequency higher than 20KHz is utilized to act on the cavitation effect generated by the oil-water mixture, when the ultrasonic wave is transmitted in the oil-water mixture medium, also has certain mechanical stirring function and thermal effect, and is beneficial to more sufficient oil-water separation.
Referring to fig. 3-4, a foam metal splitter plate 9 is fixedly connected to the inner wall of the separation chamber 1 near the upper end, the oil inlet pipe 4 is located above the foam metal splitter plate 9, when an oil-water mixture is introduced into the oil-water separator through the oil inlet pipe 4, the oil-water mixture passes through the foam metal splitter plate 9 and is introduced into the lower portion of the oil-water separator, the foam metal splitter plate 9 is made of a special metal material with foam pores, and performs primary splitting and crushing treatment on the oil-water mixture, a high-pressure flushing device corresponding to the foam metal splitter plate 9 is fixedly installed at the top end of the oil-water separator, the high-pressure flushing device performs upward extraction and downward high-pressure ejection on the oil-water mixture in the oil-water separator, the ejected oil-water mixture collides with the foam metal splitter plate 9, which is beneficial to generating a large amount of foam when the oil-water mixture collides with high pressure, and increases the probability of mutual collision among the oil-water mixtures, the cavitation of the ultrasound is strengthened, thereby accelerating the demulsification efficiency and the demulsification dehydration amount and realizing the thoroughness of oil-water separation.
Referring to fig. 3, in particular, the high pressure flushing device includes mounting plates 6 fixedly mounted on two sides of the upper end of the oil-water separator by screws, a gap is left between the two mounting plates 6 to facilitate the addition of a demulsifier, a first vertical pipe 7 and a second vertical pipe 8 are fixedly sleeved on the mounting plates 6 respectively, the lower end of the first vertical pipe 7 sequentially penetrates through one of the mounting plates 6 and the foamed metal splitter plate 9 and extends to the bottom of the oil-water separation chamber 1, the lower end of the second vertical pipe 8 penetrates through the other mounting plate 6 and is fixedly connected with a spraying mechanism, the spraying mechanism is located above the foamed metal splitter plate 9, the top ends of the first vertical pipe 7 and the second vertical pipe 8 are connected by a high pressure pump body 11, the high pressure pump body 11 is fixedly connected to the upper end of one of the mounting plates 6 by a fixing plate 10, and by the mutual matching of the first vertical pipe 7, the second vertical pipe 8 and the high pressure pump body 11, the realization is with the continuous upwards twitch of the oil water mixture circulation in the oil water separator and impact downwards, and the setting of spraying the mechanism then further enlarges the area of contact between the oil water mixture that strikes downwards and foamed metal flow distribution plate 9, wherein, the mechanism that sprays includes shower 12 of fixed connection at 8 lower extremes of second standpipe, the lower extreme fixed mounting of shower 12 has a plurality of high pressure nozzle 13, and high pressure nozzle 13 is located foamed metal flow distribution plate 9's top, impact on foamed metal flow distribution plate 9 from 13 spun oil water mixture of high pressure nozzle fast, with foamed metal flow distribution plate 9 go up the collision in-process and produce a large amount of bubbles, be favorable to improving emulsion breaking efficiency.
Referring to fig. 1 and 5, a heating device is sleeved on the outer side wall of the oil-water separator, the heating device controls the internal temperature of the oil-water separator, and effectively meets the requirement of ultrasonic cleaning temperature, specifically, the heating device comprises a hollow heating box 14 fixedly sleeved at the outer end of the oil-water separator, installation cavities are drilled on the peripheral inner wall of the hollow heating box 14, electromagnetic heating coils 17 are installed in a plurality of installation cavities, a metal heat-conducting net layer 18 is installed on the outer side walls of the installation cavities, the side wall of the oil-water separator is heated by the electromagnetic heating principle, the outer wall of the oil-water separator is made of heat-resistant and heat-conducting materials, so as to heat the inside of the oil-water separator, connecting plates 15 are fixedly connected to the front and rear side walls of the upper and lower ends of the hollow heating box 14, mounting grooves are drilled on the outer side walls of the connecting plates 15, and a plurality of mounting holes 19 are formed in the mounting grooves, and the mounting holes 19 are fixedly connected with the outer side wall of the oil-water separator through mounting screws 16.
Use through mutually supporting of solid-liquid separation machine and oil water separator, the realization carries out water oil separating to the water oil mixture after the solid-liquid separation, add in water oil separator and establish ultrasonic cleaning device and high pressure washing unit, utilize ultrasonic cleaning, realize the inside cavitation effect of water oil separator to a certain extent, have mechanical stirring effect and fuel effect simultaneously, realize water oil mixture's breakdown of emulsion operation, the circulation high pressure impact of cooperation water oil mixture simultaneously, further be favorable to having improved the mutual striking degree between the inside each ion of water oil separator, thereby effectively improve its breakdown of emulsion efficiency and breakdown of emulsion dehydration volume, realize water oil separating's thoroughness, effectively improve the recovery processing effect of crude oil.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (6)
1. A process for recycling aging oil is characterized by comprising the following steps: the method comprises the following steps:
s1, separating impurities of the aging oil mixture, conveying the aging oil to a rotary picking cage in a sorting chamber at the upper end of the solid-liquid separator through a mechanical feeding hopper, repeatedly washing the aging oil by the rotary picking cage at high pressure, and enabling oil, water, silt and pebbles in the washed aging oil to fall to the lower part of the solid-liquid separator through the rotary picking cage to realize impurity separation;
s2, carrying out flotation on the aging oil mixture after impurities are separated, and repeatedly operating through heating and jet flow aeration, wherein most of oil in the aging oil mixture is floated, silt and gravel are precipitated at the bottom of a solid-liquid separator and can be scraped by a scraper machine and sent to a discharge hopper for discharge, so that solid-liquid separation of the aging oil mixture is realized, and an oil-water mixture is obtained;
s3, separating an oil-water mixture, namely pumping the floated aging oil-water mixture into an oil-water separator through a first pump body, heating to raise the temperature to 40-70 ℃, installing an ultrasonic cleaning device at the oil-water separator, and realizing oil-water separation of the oil-water mixture by utilizing ultrasonic hot water washing;
s4, pumping the oil-water mixture which is fully separated and broken in the oil-water separator into a settling tank through a second pump body, standing for 0.5-1h to realize the layering of oil, water and fine silt, thereby obtaining crude oil positioned at the upper layer;
a separation cavity (1) is arranged in the oil-water separator in the S3, the side walls of the left upper end and the right lower end of the oil-water separator are respectively provided with an oil inlet pipe (4) and an oil discharge pipe (5), and the oil inlet pipe (4) and the oil discharge pipe (5) are respectively connected with the first pump body and the second pump body;
a foam metal flow distribution plate (9) is fixedly connected to the inner wall of the separation cavity (1) close to the upper end, the oil inlet pipe (4) is located above the foam metal flow distribution plate (9), and a high-pressure flushing device corresponding to the foam metal flow distribution plate (9) is fixedly installed at the top end of the oil-water separator;
the high-pressure flushing device comprises mounting plates (6) fixedly mounted on two sides of the upper end of the oil-water separator through screws, a first vertical pipe (7) and a second vertical pipe (8) are fixedly sleeved on the mounting plates (6) respectively, the lower end of the first vertical pipe (7) penetrates through one of the mounting plates (6) and a foamed metal flow distribution plate (9) in sequence and extends to the bottom of the oil-water separation cavity (1), the lower end of the second vertical pipe (8) penetrates through the other mounting plate (6) and is fixedly connected with a spraying mechanism, the spraying mechanism is located above the foamed metal flow distribution plate (9), the top ends of the first vertical pipe (7) and the second vertical pipe (8) are connected through a high-pressure pump body (11), and the high-pressure pump body (11) is fixedly connected to the upper end of one of the mounting plates (6) through a fixing plate (10);
the spraying mechanism comprises a spraying pipe (12) fixedly connected to the lower end of the second vertical pipe (8), a plurality of high-pressure spray heads (13) are fixedly mounted at the lower end of the spraying pipe (12), and the high-pressure spray heads (13) are located above the foamed metal flow distribution plate (9).
2. The aging oil recycling treatment process of claim 1, wherein: in the step S1, a pulverizer is adopted to moderately crush and cut the aging oil mixture before impurity separation of the aging oil mixture, and the pulverizer is used to cut and decompose larger impurities in the aging oil mixture, so that the particle size of the impurities is reduced.
3. The aging oil recycling treatment process of claim 1, wherein: high-pressure spray set is installed to the top of cage is picked up in the rotation in S1, high-pressure spray set includes high-pressure squirt and spraying system, spraying system comprises a plurality of spray pipes that transversely set up and the spray nozzle of setting at the spray pipe lower extreme.
4. The aging oil recycling treatment process of claim 1, wherein: and the ultrasonic cleaning device in the S3 comprises an ultrasonic generator (2) and a plurality of ultrasonic transducers (3) embedded in the oil-water separator, wherein the input ends of the ultrasonic transducers (3) are electrically connected with the ultrasonic generator (2).
5. The aging oil recycling treatment process of claim 1, wherein: the cover is equipped with heating device on oil water separator's the outer end lateral wall, heating device establishes cavity heating cabinet (14) in oil water separator outer end including fixed cover, all cut on the inner wall all around of cavity heating cabinet (14) and have the installation cavity, and be a plurality of electromagnetic heating coil (17) are all installed to the installation cavity, and install metal heat conduction stratum reticulare (18) on the lateral wall of a plurality of installation cavities.
6. The aging oil recycling treatment process of claim 5, wherein: equal fixedly connected with links up fishplate bar (15) on the lateral wall around the last lower extreme of cavity heating cabinet (14), it is a plurality of all dig the mounting groove on the lateral wall of linking fishplate bar (15), and all seted up a plurality of mounting holes (19) in the mounting groove, and mounting hole (19) are through mounting screw (16) and oil water separator's lateral wall fixed connection.
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| CN101428247A (en) * | 2008-11-28 | 2009-05-13 | 天津市泰兴工贸有限公司 | Pollution-free oil-containing mud cleaning treatment method and treatment system thereof |
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