Fracturing acidizing fluid treatment device and treatment process thereof

Abstract

The invention provides a fracturing acidizing fluid treatment device which comprises a box body, a connecting box is fixed to the top of the box body, a liquid inlet pipe is fixedly installed on the connecting box, an air inlet pipe is fixedly installed on the liquid inlet pipe, an open groove is formed in the top of the box body, the open groove is formed in the connecting box, and a cavity is formed in the box body. According to the fracturing acidizing fluid treatment device, acidizing fluid is pushed by gas to be sprayed to the rotating barrel through a spray head, pushing and filtering of the fluid are completed through strong air pressure, the fluid entering the rotating barrel can be directly pumped out through a connecting pipe and a supporting pipe during filtering, in addition, the rotating barrel rotates to change the position of a filtering point, and the filtering effect is improved. The position of the filter screen is changed, long-time filtration is facilitated, air independently enters the rotary barrel and the filter barrel in the later period to blow and dry the rotary barrel and the filter barrel, and corrosion caused by the fact that acidizing fluid adheres to equipment for a long time is avoided.

Description

Technical Field

[0001] The invention relates to the field of fracturing fluid processing equipment, in particular to a fracturing acidizing fluid processing device and a processing process thereof. Background Art

[0002] After the fracturing operation is completed, the fracturing acidizing fluid is mainly composed of well washing return wastewater and residual fracturing fluid. If the acidizing return fluid is discharged directly, it will cause pollution to the surrounding environment, especially crops and surface water systems. This kind of wastewater is difficult to treat and requires special processes for treatment. The wastewater needs to be separated into solids and liquids during treatment.

[0003] According to a fracturing return fluid recovery and treatment process disclosed in the existing patent document with publication number CN107840481A, it includes a fracturing wellhead, and also includes a high-pressure gas-liquid separator, a cartridge filter, a gas combustion tank, a sterilization treatment device, a pH value adjustment and metal ion precipitation device, a flocculation sedimentation device, a low-pressure three-phase separator, a fine filter, a liquid storage tank and a sand collection tank. The outlet of the fracturing wellhead is connected to the inlet of the high-pressure gas-liquid separator, and the outlet of the high-pressure gas-liquid separator is respectively connected to the inlet of the cartridge filter and the inlet of the sterilization treatment device. When used, this technical solution can realize online treatment and recycling of fracturing return fluid, and the treated return fluid is used for re-liquid preparation construction, and the construction performance is stable. With respect to the above technical solution, although this solution realizes online treatment and recovery, it cannot realize double filtration of the return fluid during use, and cannot quickly realize solid-liquid separation, which is inconvenient when used. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a device for treating fracturing acidizing fluid and a treatment process thereof, so as to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. When in use, the acidizing fluid is initially filtered through a rotating barrel, and the liquid falls into the interior of the filter barrel through the rotating barrel for re-filtration. After filtration, impurities on the surface of the rotating barrel are thrown outward under the rotation of the rotating barrel. At the same time, the spiral convex strips on the rotating barrel complete the cleaning of the scratches inside the filter barrel, which is convenient for the cleaning and use of the filter plate in the later stage.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a device for treating fracturing acidizing fluid, comprising a box body, a connecting box is fixed on the top of the box body, a liquid inlet pipe is fixedly installed on the connecting box, an air inlet pipe is fixedly installed on the liquid inlet pipe, a slot is opened on the top of the box body, the slot is installed inside the connecting box, a cavity is opened inside the box body, the cavity and the slot are connected by a connecting plate, a filter barrel is fixed on the connecting plate, the filter barrel is fixedly installed inside the cavity, and a rotating barrel is rotatably installed inside the filter barrel.

[0006] Furthermore, an opening is formed on the filter barrel, and the opening cooperates with the rotating barrel. A spiral convex strip is fixed to the side of the rotating barrel, and the spiral convex strip is in contact with the inner wall of the filter barrel.

[0007] Furthermore, a driving motor is fixed to one end of the box body, an output shaft is installed on the driving motor, and the output shaft is installed on the rotating barrel through the filter barrel.

[0008] Furthermore, an observation window is fixedly installed on one side of the box body, a support frame is fixedly installed on the bottom of the box body, and a displacement mechanism is fixedly installed on one side of the observation window.

[0009] Furthermore, an arc-shaped opening is opened at one end of the filter barrel, an arc-shaped plate is movably installed on the side of the arc-shaped opening, a movable column is fixed on the side of the arc-shaped plate, and one end of the movable column is fixedly installed on the displacement mechanism.

[0010] Furthermore, a cylinder is fixed at one end of the liquid inlet pipe, a nozzle is fixed at the bottom of the cylinder, the cylinder is fixedly mounted on the top of the rotating barrel, and a filter is fixedly mounted on the rotating barrel.

[0011] Furthermore, an extraction pipe is fixedly installed on one side of the box body, the extraction pipe is installed on the box body through an extraction pump, and the extraction pipe is movably installed inside the rotating barrel.

[0012] Furthermore, a support pipe is fixed to one end of the extraction pipe, a connecting pipe is fixedly installed on the support pipe, and a slag discharge port is opened on the side of the box body, and the slag discharge port matches the arc-shaped port.

[0013] Furthermore, an inclined seat is fixed inside the box body, the inclined seat is installed at the bottom of the filter barrel, and a drainage pipe is fixedly installed between the inclined seat and the box body.

[0014] An acidizing fluid treatment process implemented using the device described in claim 1, the treatment process comprising the following steps:

[0015] Step 1: Acidic fracturing wastewater: collect the acidic fracturing wastewater generated by the fracturing equipment and perform subsequent processing after collection;

[0016] Step 2: catalytic oxidation, catalytic oxidation of the acidic wastewater with ozone under the catalysis of nano-titanium oxide and nano-aluminum oxide;

[0017] Step 3: flocculation reaction: adding flocculants to the acidic wastewater to separate the mud and water, and filtering and separating the wastewater on the top of the mud again after separation;

[0018] Step 4: solid-liquid separation: the wastewater on the top after flocculation is filtered again through a filtering device, and the solid and liquid are separated again after filtering;

[0019] Step 5: Sludge treatment: After solid-liquid separation, the sludge or solid in the filter device is discharged centrally.

[0020] Beneficial effects of the present invention:

[0021] 1. This is a device for treating fracturing acidizing fluid. When in use, the acidizing fluid is initially filtered through a rotating barrel, and the liquid falls into the interior of the filter barrel through the rotating barrel for re-filtration. After filtration, the impurities on the surface of the rotating barrel are thrown outward under the rotation of the rotating barrel. At the same time, the spiral convex strips on the rotating barrel complete the cleaning of the inside of the filter barrel, which is convenient for the cleaning and use of the filter plate in the later stage.

[0022] 2. This is a device for treating acidizing fluid for fracturing. The acidizing fluid is sprayed to the rotating barrel through the nozzle under the impetus of gas, and the liquid is pushed and filtered by the strong air pressure. The liquid entering the rotating barrel during filtration can be directly drawn out through the connecting pipe and the supporting pipe. In addition, the rotating barrel rotates to change the position of the filtering point, and the position of the filter screen is changed to facilitate long-term filtration. Later, the gas entering separately can blow and dry the rotating barrel and the filter barrel to avoid corrosion caused by the acidizing fluid adhering to the equipment for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a fracturing acidizing fluid treatment process of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a fracturing acidizing fluid treatment device of the present invention;

[0025] Figure 3 This is a schematic diagram of the cutaway structure of a box for a fracturing acidizing fluid treatment device according to the present invention;

[0026] Figure 4 It is a schematic diagram of a side cross-sectional structure of a box body used for a fracturing acidizing fluid treatment device of the present invention;

[0027] Figure 5 It is a schematic diagram of the side view structure of a rotating barrel for a fracturing acidizing fluid treatment device of the present invention;

[0028] Figure 6 This is a schematic diagram of a cylinder structure of a fracturing acidizing fluid treatment device according to the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of an arc plate used in a fracturing acidizing fluid treatment device according to the present invention;

[0030] In the figure: 1. box body; 2. observation window; 3. displacement mechanism; 4. support frame; 5. connection box; 6. liquid inlet pipe; 7. air inlet pipe; 8. drive motor; 9. liquid discharge pipe; 10. slot; 11. cavity; 12. filter barrel; 13. rotating barrel; 14. spiral rib; 15. output shaft; 16. extraction pump; 17. extraction pipe; 18. support pipe; 19. connection pipe; 20. slag discharge port; 21. arc plate; 22. inclined seat; 23. cylinder body; 24. nozzle; 25. connection plate; 26. movable column. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] See also Figures 1 to 7 The present invention provides a technical solution: a device for treating fracturing acidizing fluid, comprising a box body 1, a connection box 5 is fixed on the top of the box body 1, a liquid inlet pipe 6 is fixedly installed on the connection box 5, an air inlet pipe 7 is fixedly installed on the liquid inlet pipe 6, a slot 10 is opened on the top of the box body 1, the slot 10 is installed inside the connection box 5, a cavity 11 is opened inside the box body 1, the cavity 11 and the slot 10 are connected by a connection plate 25, and a gas inlet pipe 7 is fixed on the connection plate 25. A filter barrel 12 is fixedly installed inside the cavity 11, and a rotating barrel 13 is rotatably installed inside the filter barrel 12. An opening is opened on the filter barrel 12, and the opening cooperates with the rotating barrel 13. A spiral rib 14 is fixed on the side of the rotating barrel 13, and the spiral rib 14 contacts the inner wall of the filter barrel 12. The rotation of the spiral rib 14 completes the scratching of the inner wall of the filter barrel 12, and the scratching completes the cleaning of the filter barrel 12, which is convenient for the reuse of the filter barrel 12.

[0033] In this embodiment, a driving motor 8 is fixed to one end of the box body 1, and an output shaft 15 is installed on the driving motor 8. The output shaft 15 is installed on the rotating barrel 13 through the filter barrel 12. An observation window 2 is fixedly installed on one side of the box body 1, and a support frame 4 is fixedly installed on the bottom of the box body 1. A displacement mechanism 3 is fixedly installed on one side of the observation window 2. An arc-shaped opening is opened at one end of the filter barrel 12, and an arc-shaped plate 21 is movably installed on the side of the arc-shaped opening. A movable column 26 is fixed on the side of the arc-shaped plate 21, and one end of the movable column 26 is fixedly installed on the displacement mechanism 3. The displacement mechanism 3 is a reciprocating electric push rod. The displacement mechanism 3 drives the arc plate 21 to move through the movable column 26, and the arc plate 21 loses its shielding of the arc-shaped opening, so that the solid impurities inside the filter barrel 12 are pushed out.

[0034] In this embodiment, a barrel 23 is fixed at one end of the liquid inlet pipe 6, a nozzle 24 is fixed at the bottom of the barrel 23, the barrel 23 is fixedly mounted on the top of the rotating barrel 13, a filter screen is fixedly mounted on the rotating barrel 13, an extraction pipe 17 is fixedly mounted on one side of the box body 1, the extraction pipe 17 is mounted on the box body 1 through an extraction pump 16, the extraction pipe 17 is movably mounted inside the rotating barrel 13, a support pipe 18 is fixed at one end of the extraction pipe 17, a connecting pipe 19 is fixedly mounted on the support pipe 18, a slag discharge port 20 is opened on the side of the box body 1, the slag discharge port 20 cooperates with the arc-shaped port, an inclined seat 22 is fixed inside the box body 1, the inclined seat 22 is mounted at the bottom of the filter barrel 12, a liquid discharge pipe 9 is fixedly mounted between the inclined seat 22 and the box body 1, the extraction pump 16 generates suction to directly extract the liquid entering the rotating barrel 13, and the acidified liquid can be directly discharged after a single filtration, meeting the use requirements under different processing.

[0035] An acidizing fluid treatment process implemented using the device described in claim 1, the treatment process comprising the following steps:

[0036] Step 1: Acidic fracturing wastewater: collect the acidic fracturing wastewater generated by the fracturing equipment and perform subsequent processing after collection;

[0037] Step 2: catalytic oxidation, catalytic oxidation of the acidic wastewater with ozone under the catalysis of nano-titanium oxide and nano-aluminum oxide;

[0038] Step 3: flocculation reaction: adding flocculants to the acidic wastewater to separate the mud and water, and filtering and separating the wastewater on the top of the mud again after separation;

[0039] Step 4: solid-liquid separation: the wastewater on the top after flocculation is filtered again through a filtering device, and the solid and liquid are separated again after filtering;

[0040] Step 5: Sludge treatment: After solid-liquid separation, the sludge or solid in the filter device is discharged centrally.

[0041] When the device is in use, the acidified liquid enters the interior of the cylinder 23 through the liquid inlet pipe 6, and air is taken in through the air inlet pipe 7. The gas pushes the liquid to spray downward from the nozzle 24, and the liquid is sprayed to the top of the rotating barrel 13. Under the push of the air pressure, the liquid is initially filtered through the rotating barrel 13. When secondary filtration is required, the liquid entering the rotating barrel 13 drips downward again, and the second filtration is completed when dripping. The acidified liquid after the secondary filtration falls into the interior of the filter barrel 12 for three filtrations. The liquid after the three filtrations is discharged from the inside of the drain pipe 9 through the inclined seat 22. When a single filtration is required, the water entering the rotating barrel 13 enters the interior of the support pipe 18 and the extraction pipe 17 through the suction force of the connecting pipe 19 and is discharged. The extraction pump 16 is a liquid. The flow provides power. In addition, the rotating barrel 13 rotates to change the position of the filtering point, and completes the change of the filter screen position, which is convenient for long-term filtering. Later, the gas entering separately can be blown and dried to the rotating barrel 13 and the filter barrel 12 to avoid corrosion caused by the acidified liquid adhering to the equipment for a long time. After the rotating barrel 13 and the filter barrel 12 have been filtered for a long time, the driving motor 8 is started. The driving motor 8 drives the rotating barrel 13 to rotate through the output shaft 15. When the rotating barrel 13 rotates, impurities on the surface are thrown off. At the same time, the spiral convex strips 14 contact and scratch the inner wall of the filter barrel 12. When scratching, the displacement mechanism 3 is started to drive the arc plate 21 to move. The arc plate 21 loses its cover on the arc mouth, so that the impurities fall through the arc mouth and are discharged inside the slag discharge port 20.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for treating fracturing acidizing fluid, comprising a housing (1), characterized in that: A connection box (5) is fixed on the top of the box body (1), a liquid inlet pipe (6) is fixedly mounted on the connection box (5), an air inlet pipe (7) is fixedly mounted on the liquid inlet pipe (6), a slot (10) is formed on the top of the box body (1), the slot (10) is mounted inside the connection box (5), a cavity (11) is formed inside the box body (1), the cavity (11) and the slot (10) are connected via a connection plate (25), a filter barrel (12) is fixed on the connection plate (25), the filter barrel (12) is fixedly mounted inside the cavity (11), and a rotating barrel (13) is rotatably mounted inside the filter barrel (12).

2. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: The filter barrel (12) is provided with an opening, the opening being matched with the rotating barrel (13), a spiral convex strip (14) being fixed on the side of the rotating barrel (13), and the spiral convex strip (14) being in contact with the inner wall of the filter barrel (12).

3. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: A driving motor (8) is fixed to one end of the box body (1), an output shaft (15) is mounted on the driving motor (8), and the output shaft (15) is mounted on the rotating barrel (13) through the filter barrel (12).

4. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: An observation window (2) is fixedly mounted on one side of the box body (1), a support frame (4) is fixedly mounted on the bottom of the box body (1), and a displacement mechanism (3) is fixedly mounted on one side of the observation window (2).

5. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: An arc-shaped opening is formed at one end of the filter barrel (12), an arc-shaped plate (21) is movably mounted on the side of the arc-shaped opening, a movable column (26) is fixed on the side of the arc-shaped plate (21), and one end of the movable column (26) is fixedly mounted on the displacement mechanism (3).

6. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: A cylinder (23) is fixed at one end of the liquid inlet pipe (6), a nozzle (24) is fixed at the bottom of the cylinder (23), the cylinder (23) is fixedly mounted on the top of the rotating barrel (13), and a filter screen is fixedly mounted on the rotating barrel (13).

7. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: An extraction pipe (17) is fixedly mounted on one side of the box body (1); the extraction pipe (17) is mounted on the box body (1) via an extraction pump (16); and the extraction pipe (17) is movably mounted inside the rotating barrel (13).

8. The device for treating fracturing acidizing fluid according to claim 7, characterized in that: A support pipe (18) is fixed to one end of the extraction pipe (17), a connecting pipe (19) is fixedly mounted on the support pipe (18), and a slag discharge port (20) is opened on the side of the box body (1), and the slag discharge port (20) matches the arc-shaped port.

9. The device for treating fracturing acidizing fluid according to claim 1, characterized in that: An inclined seat (22) is fixed inside the box (1), and the inclined seat (22) is installed at the bottom of the filter barrel (12). A drainage pipe (9) is fixedly installed between the inclined seat (22) and the box (1).

10. An acidizing liquid treatment process implemented using the device described in claim 1, characterized in that: The treatment process comprises the following steps: Step 1: Acidic fracturing wastewater: collect the acidic fracturing wastewater generated by the fracturing equipment and perform subsequent processing after collection; Step 2: catalytic oxidation, catalytic oxidation of the acidic wastewater with ozone under the catalysis of nano-titanium oxide and nano-aluminum oxide; Step 3: flocculation reaction: adding flocculants to the acidic wastewater to separate the mud and water, and filtering and separating the wastewater on the top of the mud again after separation; Step 4: solid-liquid separation: the wastewater on the top after flocculation is filtered again through a filtering device, and the solid and liquid are separated again after filtering; Step 5: Sludge treatment: After solid-liquid separation, the sludge or solid in the filter device is discharged centrally.

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