CN114735843B - Acid mixed liquid treatment device for petroleum fracturing acidification - Google Patents

Acid mixed liquid treatment device for petroleum fracturing acidification Download PDF

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Publication number
CN114735843B
CN114735843B CN202210252832.7A CN202210252832A CN114735843B CN 114735843 B CN114735843 B CN 114735843B CN 202210252832 A CN202210252832 A CN 202210252832A CN 114735843 B CN114735843 B CN 114735843B
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reaction tank
rotating shaft
tank
wall
reaction
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CN202210252832.7A
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CN114735843A (en
Inventor
肖琳波
蒋贝贝
陈媛
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Southwest Petroleum University
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Southwest Petroleum University
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B01J4/002—Nozzle-type elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
    • B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses an acidic mixed liquid treatment device for petroleum fracturing acidification, which comprises a reaction tank, wherein a liquid inlet is formed in the outer wall of a tank body close to the top of the reaction tank, and a first feeding pipe and a second feeding pipe are arranged on the top of the reaction tank in a penetrating manner; the stirring shaft penetrates from the top of the reaction tank and extends to the bottom of the interior of the reaction tank, and a plurality of stirring rods are uniformly arranged on the outer wall of the shaft at the upper part of the stirring shaft; a plurality of sidewall scrapers; the installation sleeve is evenly equipped with a plurality of spray bars along the circumferencial direction on its outer wall, and first filling tube extends to the retort inside and communicates through coupling hose and a part spray bar is sealed, and the second filling tube extends to the retort inside and communicates through coupling hose and another part spray bar is sealed. The device of the invention quickens the reaction rate of each reaction in the negative pressure tank for carrying out reaction treatment on the acid mixed solution, improves the treatment efficiency of the acid solution, and can realize the removal of the settled sludge deposited on the side wall of the reaction tank after coagulation sedimentation reaction in the reaction tank.

Description

Acid mixed liquid treatment device for petroleum fracturing acidification
Technical Field
The invention relates to the technical field of acid mixed liquor treatment, in particular to an acid mixed liquor treatment device for petroleum fracturing acidification.
Background
In the process of oil and gas exploitation, in order to increase the seepage capability of oil and gas and improve the oil and gas yield, the exploited bottom layer needs to be subjected to fracturing acidification, namely acid fracturing. When the acid fracturing is performed, the acid mixed solution is used as the fracturing fluid under the condition that the fracture pressure is higher than the stratum fracture pressure, fracturing without adding propping agents is performed, and the wall surface of the fracture is eroded into an uneven surface by means of the erosion action of the acid mixed solution, so that after the pump is stopped for pressure relief, the wall surface of the fracture is not completely closed, and therefore, the acid fracturing fluid has higher diversion capability and obvious effect on recovering and improving the production capacity of an oil well.
After acid fracturing, the acid mixed liquor can flow back to the oil well, the mixed liquor formed by petroleum fracturing acidification is directly discharged in an acid state and can pollute surrounding rivers and soil, and meanwhile, the subsequent treatment is also influenced by impurities such as a large number of sand grains, so that the acid mixed liquor after fracturing acidification is required to be treated, in the treatment process of the acid mixed liquor, the coagulation liquid is required to be subjected to acid neutralization and coagulation reaction, sediment generated in the coagulation reaction can be attached to the inner wall of a container, the volume of the container for reaction is relatively large, and attachments on the inner wall of the container are difficult to clean by means of manpower.
Disclosure of Invention
The invention aims to provide an acidic mixed solution treatment device for petroleum fracturing and acidizing, which is used for solving the problems in the background technology.
The invention provides an acidic mixed solution treatment device for petroleum fracturing and acidizing, which comprises the following components:
the reaction tank is provided with a liquid inlet on the outer wall of the tank body close to the top, and a first feeding pipe and a second feeding pipe are arranged on the top of the reaction tank in a penetrating way;
the stirring shaft penetrates from the top of the reaction tank and extends to the bottom of the interior of the reaction tank, the top of the stirring shaft is in transmission connection with an output shaft of a stirring motor arranged on the reaction tank, and a plurality of stirring rods are uniformly arranged on the outer wall of the shaft at the upper part of the stirring shaft;
the side wall scrapers are respectively abutted against the inner wall of the reaction tank and positioned above the inner bottom of the reaction tank, and are respectively fixedly connected with the outer wall of the shaft at the lower part of the stirring shaft through connecting rods;
the first charging pipe extends into the reaction tank to be communicated with one part of the spray bars in a sealing way through a connecting hose, and the second charging pipe extends into the reaction tank to be communicated with the other part of the spray bars in a sealing way through the connecting hose;
a liquid outlet pipe is arranged on the side wall, close to the top of the side wall scraping plate, of the reaction tank, and a slag outlet pipe is arranged on the side wall, close to the bottom of the side wall scraping plate.
Preferably, a gap exists between the inner wall of the mounting sleeve and the outer wall of the stirring shaft;
one end of each spray rod far away from the mounting sleeve is inclined downwards;
a plurality of spray heads are uniformly arranged on the spray rod;
any two adjacent spray bars are connected with the first feeding pipe in a sealing way through a connecting hose, and the other spray bar is connected with the second feeding pipe in a sealing way through a connecting hose
Preferably, the connecting rods close to the bottom of the reaction tank are respectively provided with a bottom wall scraping plate which is in contact with the inner bottom wall of the reaction tank;
the side wall scraping plate and the bottom wall scraping plate are made of high-temperature-resistant and corrosion-resistant plastics.
Preferably, a pump is arranged on the liquid outlet pipe;
the drain pipe is connected with the liquid inlet end of the filter tank in a sealing way, and the liquid outlet end of the filter tank is connected with an oil-water separator in a sealing way.
Preferably, the filter tank is internally provided with an annular mounting seat, the inner wall of the annular mounting seat is provided with a first filter screen, and the outer side wall of the annular mounting seat is in sliding connection with the inner wall of the filter tank.
Preferably, the top of the filtering tank is an opening, and a mounting plate is arranged above the filtering tank and fixedly connected with the top of the filtering tank through a support column arranged at the bottom of the filtering tank;
the two ends of the upper part of the mounting plate are respectively provided with a first rotating shaft and a second rotating shaft which are rotationally connected with the upper surface of the mounting plate, and pull ropes respectively fixedly arranged on the first rotating shaft and the second rotating shaft penetrate through the mounting plate and are fixedly connected with the annular mounting seat.
Preferably, a third rotating shaft and a fourth rotating shaft which are rotationally connected with the upper surface of the mounting plate are arranged between the first rotating shaft and the second rotating shaft;
the third rotating shaft and the fourth rotating shaft are respectively fixedly sleeved with gears in meshed transmission connection, and the third rotating shaft or the fourth rotating shaft is in transmission connection with an output shaft of a movable driving motor arranged on the mounting plate;
the third rotating shaft is in transmission connection with the transmission wheels respectively fixedly sleeved on the first rotating shaft through a transmission belt, and the fourth rotating shaft is in transmission connection with the transmission wheels respectively fixedly sleeved on the second rotating shaft through a transmission belt.
Preferably, the height of the side wall scraping plate is one third of the height of the inner wall of the reaction tank.
Preferably, a controller is arranged on one side of the reaction tank;
electromagnetic valves are respectively arranged on the liquid outlet pipe and the slag outlet pipe;
the controller is electrically connected with the stirring motor, the pump, the oil-water separator, the mobile driving motor and the two electromagnetic valves respectively.
Preferably, the two liquid outlet ends of the oil-water separator are respectively and hermetically connected with an oil collecting tank and a liquid collecting tank, and an outlet of the slag discharging pipe is connected with a sludge collecting bin.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the plurality of spray bars which are distributed in a dispersed manner are arranged in the reaction tank, the first feeding pipe arranged at the top of the reaction tank is in sealing connection with one part of spray bars through the connecting hose, and the second feeding pipe is in sealing connection with the other part of spray bars through the connecting hose, so that the solution for neutralization reaction and the solution for coagulation reaction which are added into the reaction tank are more fully and uniformly added into the acid mixed solution to be treated in the reaction tank, the reaction rate in the reaction tank is accelerated, and the treatment efficiency is improved while the acid mixed solution is fully treated.
In addition, according to the invention, the stirring shaft is arranged in the reaction tank, the upper part of the stirring shaft is connected with the stirring rod, and the lower part of the stirring shaft is connected with the side wall scraping plate, so that the reaction rate of each reaction in the reaction tank is further improved by stirring during the reaction, and the settled sludge deposited on the side wall of the reaction tank after the coagulation sedimentation reaction in the reaction tank can be removed.
Finally, the invention realizes the fine filtration of the reacted mixed solution by arranging the filter tank connected with the reaction tank through the liquid outlet pipe, and is beneficial to the subsequent oil-liquid separation treatment.
The invention realizes the comprehensive treatment of the acid mixed liquid, and solves the problems that the acid mixed liquid generated after the fracturing and the acidification are carried out by the prior device is insufficient in treatment and the sediment in the reaction vessel is difficult to remove.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an acidic mixed solution treatment device for petroleum fracturing and acidizing;
fig. 2 is a schematic diagram of a spray rod distribution side view structure of an acidic mixed solution treatment device for petroleum fracturing and acidizing;
fig. 3 is a schematic diagram of a partial top view structure of an acidic mixed solution treatment device for petroleum fracturing and acidizing.
Reference numerals illustrate:
1-reaction tank, 2-stirring shaft, 3-stirring motor, 4-side wall scraper, 5-mounting sleeve, 6-connecting hose, 7-pump, 8-oil-water separator, 9-oil collecting tank, 10-filtering tank, 11-bottom wall scraper, 12-annular mounting seat, 13-first filter screen, 14-mounting plate, 16-controller, 18-solenoid valve, 19-liquid collecting tank, 20-sediment collecting bin, 101-liquid inlet, 102-first feeding pipe, 103-second feeding pipe, 104-liquid outlet pipe, 105-slag discharging pipe, 201-stirring rod, 401-connecting rod, 501-spray rod, 502-spray head, 1501-first rotating shaft, 1502-second rotating shaft, 1503-third rotating shaft, 1504-fourth rotating shaft, 1505-mobile driving motor and 1506-pull rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
Example 1
As shown in fig. 1 to 3, an acidic mixed solution treatment device for petroleum fracturing and acidizing comprises:
the reaction tank 1 is provided with a liquid inlet 101 on the outer wall of the tank body close to the top, and a first feeding pipe 102 and a second feeding pipe 103 are arranged on the top in a penetrating way;
a stirring shaft 2 penetrating from the top of the reaction tank 1 and extending to the bottom of the reaction tank 1, wherein the top of the stirring shaft is in transmission connection with an output shaft of a stirring motor 3 arranged on the reaction tank 1, and a plurality of stirring rods 201 are uniformly arranged on the outer wall of the shaft at the upper part of the stirring shaft;
the side wall scrapers 4 are respectively abutted against the inner wall of the reaction tank 1 and positioned above the inner bottom of the reaction tank 1, and are respectively fixedly connected with the outer shaft wall of the lower part of the stirring shaft 2 through connecting rods 401;
the installation sleeve 5 is sleeved on the stirring shaft 2 and fixedly connected with the top of the reaction tank 1, a plurality of spray bars 501 are uniformly arranged on the outer wall of the stirring shaft along the circumferential direction, the first feeding pipe 102 extends into the reaction tank 1 and is communicated with one part of spray bars 501 in a sealing way through a connecting hose 6, and the second feeding pipe 103 extends into the reaction tank 1 and is communicated with the other part of spray bars 501 in a sealing way through the connecting hose 6;
a liquid outlet pipe 104 is arranged on the side wall of the reaction tank 1, which is close to the top of the side wall scraping plate 4, a slag outlet pipe 105 is arranged on the side wall, which is close to the bottom of the side wall scraping plate 4, a pump 7 is arranged on the liquid outlet pipe 104, and electromagnetic valves 18 are respectively arranged on the liquid outlet pipe 104 and the slag outlet pipe 105;
the drain pipe 104 is connected with the liquid inlet end sealing of the filter tank 10, the liquid outlet end sealing of the filter tank 10 is connected with the oil-water separator 8, two liquid outlet ends of the oil-water separator 8 are respectively connected with the oil collecting tank 9 and the liquid collecting tank 19 in a sealing manner, and the outlet of the slag discharging pipe 105 is connected with the sediment collecting bin 20.
A gap exists between the inner wall of the mounting sleeve 5 and the outer wall of the stirring shaft 2.
The ends of the spray bars 501, which are far away from the mounting sleeve 5, are all inclined downwards;
a plurality of spray heads 502 are uniformly arranged on the spray rod 501;
any two adjacent spray bars 501, one of which is in sealing connection with the first filling pipe 102 through the connecting hose 6, and the other of which is in sealing connection with the second filling pipe 103 through the connecting hose 6.
When the device is used, the acid mixed solution after fracturing and acidification is injected into the reaction tank 1 through the liquid inlet 101, the alkaline solution for neutralization reaction of the acid mixed solution is added into the reaction tank 1 through the first feeding pipe 102, and the coagulant for coagulating sedimentation of the mixed solution is diluted into solution and then added into the reaction tank 1 through the second feeding pipe 103.
When the alkaline solution and the coagulant dilute solution respectively enter the first feeding pipe 102 and the second feeding pipe 103, and the first feeding pipe 102 and the second feeding pipe 103 are respectively connected with the spray bars 501 in a sealing way through the connecting hose 6, the alkaline solution and the coagulant dilute solution can be respectively sprayed out of the spray heads 502 on the different spray bars 501, the spray bars 501 in the device are distributed in a divergent way along the center of the reaction tank 1, and each spray bar 501 is provided with a plurality of spray heads, so the alkaline solution and the coagulant dilute solution can be uniformly added into the acidic mixed solution by the spray bars 501 in the device, and the neutralization reaction rate in the reaction tank 1 and the coagulation precipitation reaction rate in the reaction tank 1 are accelerated.
In practical application, in order to enable the alkaline solution and the coagulant dilute solution to be more fully fused and reacted with the acidic mixed solution, any two adjacent spray bars 501 can be in sealing connection with the first feeding pipe 102 through the connecting hose 6, and the other spray bar 501 is in sealing connection with the second feeding pipe 103 through the connecting hose 6, in the embodiment, eight spray bars 501 are arranged, wherein four spray bars 501 are in sealing connection with the first feeding pipe 102 through the connecting hose 6, and the other four spray bars 501 are in sealing connection with the second feeding pipe 103 through the connecting hose 6.
In order to sufficiently react the alkaline solution and the coagulant dilute solution with the acidic mixed solution, the reaction vessel 1 may be stirred by a stirring shaft 2 provided therein.
The stirring shaft 2 is driven to rotate by driving the stirring motor 3, and a gap exists between the inner wall of the mounting sleeve 5 in the device and the outer wall of the stirring shaft 2, so that the mounting sleeve 5 cannot block the rotation of the stirring shaft 2 when the stirring shaft 2 rotates.
When the stirring shaft 2 rotates, the stirring rod 201 positioned at the upper part of the stirring shaft 2 accelerates the reaction rate of the alkaline solution, the coagulant dilute solution and the acid mixed solution, and the side wall scraping plate 4 positioned at the inner bottom of the reaction tank 1 and connected with the stirring shaft 2 through the connecting rod 401 plays a role in stirring at the moment, so that the alkaline solution, the coagulant dilute solution and the acid mixed solution are favorable for reacting.
After the neutralization reaction and the coagulation reaction in the reaction tank 1 are finished, the mixed solution in the reaction tank 1 can be settled for a period of time, after the mixed solution is fully settled, the precipitate generated in the reaction tank 1 can be accumulated at the bottom of the reaction tank 1, at the moment, the electromagnetic valve 18 and the pump 7 on the liquid outlet pipe 104 can be controlled to open so that the mixed solution of the reaction tank 1 enters the filtering tank 10, the filtering tank 10 is utilized to filter the treated mixed solution again, the filtered mixed solution enters the oil-water separator 8, a small amount of petroleum contained in the mixed solution can be separated by utilizing the oil-water separator 8, a small amount of petroleum in the separated mixed solution enters the oil collecting tank 9, and the aqueous solution enters the liquid collecting tank 19. When the mixed liquid in the reaction tank 1 is pumped out, the electromagnetic valve 18 on the slag discharging pipe 105 is controlled to be opened, so that the settled sludge in the reaction tank 1 is discharged through the slag discharging pipe 105 and enters the settled sludge collecting bin 20.
When the stirring shaft 2 rotates, the side wall scraping plate 4 connected with the lower part of the stirring shaft 2 through the connecting rod 401 can scrape sediment attached to the inner side wall of the reaction tank 1, so that sediment in the reaction tank 1 is fully removed and discharged.
Example 2
As shown in fig. 1-3, a connecting rod 401 near the bottom of the reaction tank 1 is respectively provided with a bottom wall scraping plate 11 which is in contact with the inner bottom wall of the reaction tank 1, and the side wall scraping plates 4 and the bottom wall scraping plates 11 are made of high-temperature resistant and corrosion resistant plastics. By providing the bottom wall scraper 11 on the link 401 near the bottom of the reaction tank 1, the sediment adhering to the bottom wall inside the reaction tank 1 can be sufficiently removed by the bottom wall scraper 11.
The reaction in the reaction tank 1 releases heat, and in order to avoid corrosion of the side wall scraper 4 and the bottom wall scraper 11 by the acidic mixed solution in the reaction tank 1, the side wall scraper 4 and the bottom wall scraper 11 may be made of high temperature resistant and corrosion resistant plastics, specifically polyphenylene sulfide PPS, polyether ether ketone PEEK, polysulfone PSU, fluoroplastic PTFE/FEP/ETFE/PVDF/PFA, polyimide PPA, liquid crystal polymer LCP, and the like.
Example 3
As shown in fig. 1-3, an annular mounting seat 12 is arranged inside the filter tank 10, a first filter screen 13 is arranged on the inner wall of the annular mounting seat 12, and the outer side wall of the annular mounting seat 12 is in sliding connection with the inner wall of the filter tank 10.
The top of the filter tank 10 is an opening, a mounting plate 14 is arranged above the filter tank, and the mounting plate 14 is fixedly connected with the top of the filter tank 10 through a support column 15 arranged at the bottom of the mounting plate;
the upper portion both ends of mounting panel 14 are equipped with first pivot 1501, the second pivot 1502 of being connected with the upper surface rotation of mounting panel 14 respectively, and the stay cord 1506 that is equipped with respectively fixedly on first pivot 1501, the second pivot 1502 pierces mounting panel 14 and annular mount pad 12 fixed connection.
A third rotating shaft 1503 and a fourth rotating shaft 1504 which are rotationally connected with the upper surface of the mounting plate 14 are arranged between the first rotating shaft 1501 and the second rotating shaft 1502;
the third rotating shaft 1503 and the fourth rotating shaft 1504 are respectively fixedly sleeved with gears for meshed transmission connection, and the third rotating shaft 1503 or the fourth rotating shaft 1504 is in transmission connection with an output shaft of a movable driving motor 1505 arranged on the mounting plate 14;
the third rotating shaft 1503 is in transmission connection with the transmission wheels fixedly sleeved on the first rotating shaft 1501 respectively through a transmission belt, and the fourth rotating shaft 1504 is in transmission connection with the transmission wheels fixedly sleeved on the second rotating shaft 1502 respectively through a transmission belt.
Since some impurities are present in the mixed solution after the reaction in the reaction tank 1, the mixed solution after the reaction in the reaction tank 1 is filtered again by the filter tank 10.
When a lot of filtered impurities are deposited on the first filter screen 13 in the filter tank 10, the moving driving motor 1505 can be controlled to rotate, so as to drive the third rotating shaft 1503 or the fourth rotating shaft 1504 in transmission connection with the output shaft of the moving driving motor 1505 to rotate.
When the output shaft of the moving driving motor 1505 is in transmission connection with the third rotating shaft 1503, the moving driving motor 1505 rotates to drive the third rotating shaft 1503 to rotate, and the third rotating shaft 1503 and the fourth rotating shaft 1504 are in gear engagement transmission, so that the third rotating shaft 1503 and the fourth rotating shaft 1504 rotate respectively and the rotation directions of the third rotating shaft 1503 and the fourth rotating shaft 1504 are opposite.
When the third rotary shaft 1503 rotates clockwise, the fourth rotary shaft 1504 rotates counterclockwise. The third rotating shaft 1503 is in transmission connection with the driving wheels fixedly sleeved on the first rotating shaft 1501 respectively through a transmission belt, so that the first rotating shaft 1501 rotates clockwise, the fourth rotating shaft 1504 is in transmission connection with the fourth rotating shaft 1504 through the transmission belt respectively fixedly sleeved on the fourth rotating shaft 1502, and the second rotating shaft 1502 rotates anticlockwise.
When the first rotating shaft 1501 rotates clockwise, the pull rope 1506 is retracted and wound on the first rotating shaft 1501, when the second rotating shaft 1502 rotates anticlockwise, the pull rope 1506 is retracted and wound on the second rotating shaft 1502, and meanwhile, the pull rope 1506 is pulled to be retracted at two sides, so that the annular mounting seat 12 moves upwards, the first filter screen 13 located on the annular mounting seat 12 moves upwards, and when the first filter screen 13 moves upwards, the cleaning of sediment attached to the first filter screen 13 is facilitated.
Example 4
As shown in fig. 1 to 3, the height of the side wall scraping plate 4 is one third of the height of the inner wall of the reaction tank 1, so as to realize scraping of the sediment attached to the side wall of the reaction tank 1 by the side wall scraping plate 4 and reduce the power consumption of the stirring motor 3 in the stirring driving process.
Example 5
As shown in fig. 1 to 3, one side of the reaction tank 1 is provided with a controller 16;
the controller 16 is electrically connected with the stirring motor 3, the pump 7, the oil-water separator 8, the moving driving motor 1505 and the two electromagnetic valves 18, respectively. The controller 16 is utilized to control various electrical devices in the device so that the device can be operated and used more conveniently.
The last explanation is: the above disclosure is only one specific embodiment of the present invention, but the embodiment of the present invention is not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the present invention.

Claims (9)

1. An acidic mixed solution treatment device for petroleum fracturing and acidizing, which is characterized by comprising:
a liquid inlet (101) is formed in the outer wall of the tank body, close to the top, of the reaction tank (1), and a first feeding pipe (102) and a second feeding pipe (103) are arranged on the top of the reaction tank in a penetrating manner;
a stirring shaft (2) penetrates from the top of the reaction tank (1) and extends to the bottom of the interior of the reaction tank (1), the top of the stirring shaft is in transmission connection with an output shaft of a stirring motor (3) arranged on the reaction tank (1), and a plurality of stirring rods (201) are uniformly arranged on the outer wall of the shaft at the upper part of the stirring shaft;
the side wall scrapers (4) are respectively abutted against the inner wall of the reaction tank (1) and positioned above the inner bottom of the reaction tank (1), and are respectively fixedly connected with the outer wall of the lower part of the stirring shaft (2) through connecting rods (401);
the installation sleeve (5) is sleeved on the stirring shaft (2) and fixedly connected with the top of the reaction tank (1), a plurality of spray bars (501) are uniformly arranged on the outer wall of the installation sleeve along the circumferential direction, the first feeding pipe (102) extends into the reaction tank (1) and is communicated with one part of spray bars (501) in a sealing manner through a connecting hose (6), and the second feeding pipe (103) extends into the reaction tank (1) and is communicated with the other part of spray bars (501) in a sealing manner through the connecting hose (6);
a liquid outlet pipe (104) is arranged on the side wall, close to the top of the side wall scraping plate (4), of the reaction tank (1), and a slag outlet pipe (105) is arranged on the side wall, close to the bottom of the side wall scraping plate (4);
a gap exists between the inner wall of the mounting sleeve (5) and the outer wall of the stirring shaft (2);
one end of the spray bars (501) far away from the mounting sleeve (5) is inclined downwards;
a plurality of spray heads (502) are uniformly arranged on the spray rod (501);
any two adjacent spray bars (501), one of which is in sealing connection with the first feeding pipe (102) through a connecting hose (6), and the other of which is in sealing connection with the second feeding pipe (103) through the connecting hose (6).
2. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 1, wherein: a bottom wall scraping plate (11) which is in contact with the inner bottom wall of the reaction tank (1) is respectively arranged on the connecting rods (401) which are close to the bottom of the reaction tank (1);
the side wall scraping plate (4) and the bottom wall scraping plate (11) are made of high-temperature-resistant and corrosion-resistant plastics.
3. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 1, wherein: a pump (7) is arranged on the liquid outlet pipe (104);
the liquid outlet pipe (104) is in sealing connection with the liquid inlet end of the filter tank (10), and the liquid outlet end of the filter tank (10) is in sealing connection with the oil-water separator (8).
4. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 3, wherein: the filter tank is characterized in that an annular mounting seat (12) is arranged inside the filter tank (10), a first filter screen (13) is arranged on the inner wall of the annular mounting seat (12), and the outer side wall of the annular mounting seat (12) is in sliding connection with the inner wall of the filter tank (10).
5. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 4, wherein: the top of the filter tank (10) is an opening, a mounting plate (14) is arranged above the filter tank, and the mounting plate (14) is fixedly connected with the top of the filter tank (10) through a support column (15) arranged at the bottom of the mounting plate;
the two ends of the upper part of the mounting plate (14) are respectively provided with a first rotating shaft (1501) and a second rotating shaft (1502) which are rotationally connected with the upper surface of the mounting plate (14), and pull ropes (1506) which are respectively fixedly arranged on the first rotating shaft (1501) and the second rotating shaft (1502) penetrate through the mounting plate (14) and are fixedly connected with the annular mounting seat (12).
6. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 5, wherein: a third rotating shaft (1503) and a fourth rotating shaft (1504) which are rotationally connected with the upper surface of the mounting plate (14) are arranged between the first rotating shaft (1501) and the second rotating shaft (1502);
the third rotating shaft (1503) and the fourth rotating shaft (1504) are respectively fixedly sleeved with gears for meshed transmission connection, and the third rotating shaft (1503) or the fourth rotating shaft (1504) is in transmission connection with an output shaft of a movable driving motor (1505) arranged on the mounting plate (14);
the third rotating shaft (1503) is in transmission connection with the transmission wheels fixedly sleeved on the first rotating shaft (1501) through transmission belts, and the fourth rotating shaft (1504) is in transmission connection with the transmission wheels fixedly sleeved on the second rotating shaft (1502) through transmission belts.
7. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 6, wherein: the height of the side wall scraping plate (4) is one third of the height of the inner wall of the reaction tank (1).
8. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 7, wherein: a controller (16) is arranged on one side of the reaction tank (1);
electromagnetic valves (18) are respectively arranged on the liquid outlet pipe (104) and the slag outlet pipe (105);
the controller (16) is electrically connected with the stirring motor (3), the pump (7), the oil-water separator (8), the mobile driving motor (1505) and the two electromagnetic valves (18) respectively.
9. The acidic mixed solution treatment device for petroleum fracturing and acidizing according to claim 3, wherein: two liquid outlet ends of the oil-water separator (8) are respectively and hermetically connected with an oil receiving tank (9) and a liquid collecting tank (19), and an outlet of the slag discharging pipe (105) is connected with a sludge collecting bin (20).
CN202210252832.7A 2022-03-15 2022-03-15 Acid mixed liquid treatment device for petroleum fracturing acidification Active CN114735843B (en)

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US20050098504A1 (en) * 2002-12-11 2005-05-12 Davnor Water Treatment Technologies Ltd. Oil and gas well fracturing (frac) water treatment process
CN209161561U (en) * 2018-11-15 2019-07-26 南京广龙厨具工程有限公司 A kind of grease lifting means
CN211301307U (en) * 2019-12-30 2020-08-21 青岛航荣航空维护设备有限公司 Warehouse sterilization prevention and control device
CN212151745U (en) * 2020-05-16 2020-12-15 西南石油大学 Acid mixed liquid treatment device for petroleum fracturing acidification
CN212504356U (en) * 2020-06-22 2021-02-09 陕西大胜石油工程技术服务有限公司 Drilling fracturing flowback acid fracturing and pickling mixed measure waste liquid classification treatment device
CN112387152A (en) * 2020-10-29 2021-02-23 中国石油大学(华东) Acid mixed liquid treatment device for petroleum fracturing acidification
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