An oxidation combined membrane fouling removal device

Abstract

The present invention relates to the technical field of treatment of produced water in gas fields, and particularly to an oxidation combined membrane fouling removal device, comprising: a reaction tank, in which a plug ball is provided, and a coil pipe is further provided in the inlet; a cleaning mechanism, including a catalytic net and a separation net; a storage mechanism, including a sleeve tank and a cavity, in which a storage hopper is slidably provided. By the up-and-down movement and fitting of the separation net and the catalytic net, the contact area of the catalyst is increased, and at the same time, the water flow direction is repeatedly switched to realize cyclic forward and reverse flushing, preventing blockage. Finally, the floating sediment is extruded and shaped and discharged to prevent blockage caused by sediment accumulation. The separation net and the catalytic net can rotate relatively or rotate together to respectively realize the functions of extruding and drying relevant impurities and scraping and cleaning the lower end surface of the catalytic net. When the storage hopper follows the rising liquid level, sealing is achieved, and when the liquid level drops, the squeezed solid matter is collected to prevent the impurities from being redissolved and blocked. The rotating shaft adjusts the rotation speed according to the flow rate to control the cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of gas field produced water treatment, and particularly to an oxidation combined membrane fouling removal device. Background Art

[0002] Gas field produced water refers to the water produced from underground together with natural gas during the process of natural gas extraction. Gas field produced water usually contains various components, including salts and minerals, organic matters, suspended solids including solid particles such as sediment, rust, and humus, chemical additives, dissolved gases such as methane, carbon dioxide, and hydrogen sulfide. Due to the complex composition and certain pollution of gas field produced water, it needs to be treated harmlessly. The treated water can be recycled, discharged, or used for injecting into the formation to enhance oil and gas recovery. The oxidation combined membrane technology is an advanced water treatment technology integrating oxidation and membrane separation, and is widely used in the treatment of complex industrial wastewater, such as gas field produced water. Gas field produced water has the characteristics of high salt content, high content of complex organic and inorganic matters, so efficient treatment methods are required.

[0003] The oxidation technology mainly oxidizes and decomposes organic pollutants into harmless or easily treatable substances through ozone catalytic oxidation reaction; the membrane separation technology uses the selective separation function of the separation membrane to separate pollutants from water; the oxidation combined membrane technology combines oxidation treatment with the separation membrane to achieve efficient treatment of gas field produced water. The oxidation treatment effectively degrades organic pollutants, reduces membrane fouling, and prolongs the service life of the separation membrane; the separation membrane further purifies the water quality to achieve a higher treatment effect. It integrates the advantages of oxidation and membrane separation technologies, can efficiently treat complex industrial wastewater, and meets the requirements of modern environmental protection and sustainable development.

[0004] The existing Chinese patent with the authorized announcement number CN204714624U discloses an ozone catalytic oxidation self-cleaning ceramic membrane water treatment device, including a gas-liquid mixing and conveying device and a ceramic membrane filter. The gas-liquid mixing and conveying device is connected to an ozone injection port. The gas-liquid mixing and conveying device passes the water body dissolved with ozone from the bottom into the bottom of the ceramic membrane filter through a water inlet pipeline. The inside of the ceramic membrane filter is provided with a plurality of vertically arranged ceramic membrane tubes. The water inlet pipeline communicates with the ceramic membrane tubes, and the top of the ceramic membrane filter is closed. A water outlet is opened on the side wall of the ceramic membrane filter for discharging clear water. The ceramic membrane filter adopts a modular structure. Each module contains a group of tubular or multi-channel ceramic membrane tubes. The modules are connected in parallel and can be flexibly set according to the actual water volume. It is in full contact with the inlet water through a gas-liquid mixing pump to ensure the utilization efficiency of ozone.

[0005] However, since the above-mentioned solution can only remove the dirt on the surface of the ceramic membrane during the catalytic oxidation process and cannot discharge it, the scraped impurities are easily dissolved and block the filter membrane again. At the same time, the fixation of the catalyst results in a small contact area with sewage and ozone, a low reaction rate, and its cleaning process cannot achieve real-time cleaning, with high latency and poor cleaning effect. Summary of the Invention

[0006] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title, but such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0008] To solve the above technical problems, the present invention provides the following technical solution: An oxidation combined membrane fouling removal device, comprising: a reaction tank, with an inlet and an outlet respectively provided on the upper and lower sides of the outer wall of the reaction tank. A blocking ball is provided inside the reaction tank. A coiled pipe is also provided inside the inlet, and the coiled pipe is used to uniformly inject ozone into the reaction tank. The blocking ball is used to make the produced water from gas fields flow unidirectionally. Two groups of the reaction tanks are symmetrically arranged, and the opening and closing conditions of the two groups of reaction tanks are opposite;

[0009] A cleaning mechanism, including a catalytic net and a separation net simultaneously provided on the inner wall of the reaction tank. The catalytic net is used for preliminary filtration of the produced water from gas fields, and a catalyst is filled on the inner wall of the catalytic net. The separation net moves closer to and then away from the catalytic net and repeats this movement. When they come into contact and fit together, they rotate relative to each other to squeeze and discharge the precipitate after catalytic oxidation;

[0010] A storage mechanism, including a sleeve tank sleeved on the outer wall of the reaction tank. A cavity is formed between the outer wall of the reaction tank and the inner wall of the sleeve tank, and the cavity is communicated with the lower bottom surface of the reaction tank. A storage hopper is slidably provided inside the cavity.

[0011] As a preferred scheme of the oxidation combined membrane fouling removal device of the present invention, wherein: primary sieve holes are circumferentially arrayed on the upper end surface of the catalytic net, filtering grooves are penetrated on the separation net, and a guiding ring is provided on the lower end surface of the separation net.

[0012] As a preferred scheme of the oxidation combined membrane fouling removal device of the present invention, wherein: a driving column is provided on the upper end surface of the separation net. A sleeve is concentrically provided on the inner wall of the reaction tank. First rotation grooves, second rotation grooves, and sliding grooves are respectively provided on the inner wall of the sleeve. A clamping block is provided on the outer wall of the driving column, and the clamping block is slidably provided on the inner wall of the sliding groove.

[0013] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a spiral groove is provided on the outer wall of the driving column, a driving ring is slidably provided on the inner wall of the sleeve, a sliding column is provided on the inner wall of the driving ring, and the sliding column is slidably disposed in the spiral groove.

[0014] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a control cylinder is provided at the axial center position of the catalytic net, a conical hole is formed in the control cylinder, the plug ball is slidably disposed on the inner wall of the conical hole, and a first elastic member is provided between the plug ball and the conical hole;

[0015] Claw members are provided on the outer wall of the control cylinder, and fitting grooves are formed on the lower end surface of the separation net, and the claw members are snap-fitted in the fitting grooves.

[0016] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a platform is provided on the inner wall of the reaction tank, a guiding port is formed through the platform, and the catalytic net is rotationally fitted in the platform.

[0017] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a floating ring is provided on the lower end surface of the storage hopper, a discharge port is formed through one end of the reaction tank close to the catalytic net, and the height of the discharge port is lower than the upper end surface of the catalytic net;

[0018] A communication port is formed on the lower bottom surface of the reaction tank, and the cavity is kept at the same water level as the inside of the reaction tank through the communication port.

[0019] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a sliding rod is provided on the upper end surface of the driving ring, the sliding rod slidably penetrates to the outside of the reaction tank, and a plurality of round beads are linearly arranged on the outer wall of the sliding rod.

[0020] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a first gear and an intermittent gear are rotatably provided on the outer wall of the reaction tank, two sets of the first gear and the intermittent gear are symmetrically provided with respect to the sliding rod, and a second gear is meshed between the two first gears at the same time.

[0021] As a preferred embodiment of the oxidation combined membrane fouling removal device of the present invention, the following is provided: a rotating shaft is provided on the end surface of the second gear, the rotating shaft rotatably penetrates through the outlet and is connected to a motor, and a flow sensor is provided on the rotating shaft, and the flow sensor is electrically connected to the motor.

[0022] Advantages of the present invention: By moving the separation net and the catalytic net up and down to fit each other, the contact area of the catalyst is increased. At the same time, the water flow direction is repeatedly switched to achieve cyclic forward and reverse flushing, preventing blockage. Finally, the floating sediment is squeezed and shaped and discharged to prevent sediment accumulation and blockage. The separation net and the catalytic net can rotate relative to each other or rotate together, respectively realizing the functions of squeezing and drying related impurities and scraping and cleaning the lower end surface of the catalytic net. The storage hopper is sealed when following the liquid level rising and collects the squeezed solid matter when the liquid level drops, preventing impurities from redissolving and blocking. The rotating speed of the rotating shaft is adjusted according to the flow rate to control the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0024] Figure 1 Schematic diagram of the reaction tank arranged in pairs in the present invention.

[0025] Figure 2 Internal schematic diagram of the cleaning mechanism in the present invention.

[0026] Figure 3 In the present invention Figure 2 Enlarged schematic diagram of area c.

[0027] Figure 4 Schematic diagram of the bottom of the reaction tank in the present invention.

[0028] Figure 5 In the present invention Figure 4 Enlarged view of area d.

[0029] Figure 6 In the present invention Figure 4 Schematic diagram of area b.

[0030] Figure 7 Internal structure schematic diagram of the driving column in the present invention.

[0031] Figure 8 Schematic diagram of the storage mechanism in the present invention.

[0032] Among them, in the figure:

[0033] 100, reaction tank; 1001, slide bar; 1002, round bead; 1003, first gear; 1004, intermittent wheel; 1005, second gear; 1006, motor; 101, inlet; 102, outlet; 103, blocking ball; 105, coiled pipe;

[0034] 200, Catalytic mesh; 2001, Primary sieve holes; 2002, Filter tank; 2003, Guide ring; 2004, Drive column; 2005, Sleeve; 2006, First rotating groove; 2007, Second rotating groove; 2008, Slide groove; 2009, Clamping block; 201, Separation mesh; 2011, Spiral groove; 2012, Drive ring; 2013, Slide post; 2015, Control cylinder; 2016, Tapered hole; 2017, First elastic member; 2018, Claw; 2019, Fitting groove; 2021, Platform; 2022, Guide port;

[0035] 300, Sleeve tank; 3001, Floating ring; 3002, Discharge port; 3003, Communication port; 3004, Cavity; 301, Storage hopper. Detailed implementation mode

[0036] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation mode of the present invention in conjunction with the drawings of the specification.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation mode of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it a separate or selectively exclusive embodiment from other embodiments.

[0039] Embodiment 1

[0040] Refer to Figures 1 to 8 , which is the first embodiment of the present invention. This embodiment provides an oxidation combined membrane fouling removal device, including a reaction tank 100, a cleaning mechanism, and a storage mechanism. By moving the separation mesh 201 and the catalytic mesh 200 up and down to fit, the catalyst contact area is increased, and at the same time, the water flow direction is repeatedly switched to achieve cyclic forward and reverse flushing to prevent blockage. Finally, the floating sediment is squeezed and shaped and discharged to prevent sediment accumulation and blockage.

[0041] Specifically, it includes: a reaction tank 100, with an inlet 101 and an outlet 102 respectively provided on the upper and lower sides of the outer wall of the reaction tank 100. A blocking ball 103 is arranged inside the reaction tank 100. A coil pipe 105 is also arranged inside the inlet 101. The coil pipe 105 is used to uniformly inject ozone into the reaction tank 100. The blocking ball 103 is used to make the produced water from gas fields flow unidirectionally. Two groups of the reaction tanks 100 are symmetrically arranged, and the opening and closing conditions of the two groups of reaction tanks 100 are opposite.

[0042] A cleaning mechanism, including a catalytic net 200 and a separation net 201 both arranged on the inner wall of the reaction tank 100. The catalytic net 200 is used for preliminarily filtering the produced water from gas fields, and a catalyst is filled in the inner wall of the grid of the catalytic net 200. The separation net 201 moves close to and away from the catalytic net 200 repeatedly, and is used to pump the produced water from gas fields unidirectionally from the inlet 101 to the outlet 102. When they are in contact and fit, they rotate relative to each other to squeeze and discharge the precipitates after catalytic oxidation.

[0043] A storage mechanism, including a sleeve tank 300 sleeved on the outer wall of the reaction tank 100. A cavity 3004 is formed between the outer wall of the reaction tank 100 and the inner wall of the sleeve tank 300. The cavity 3004 is communicated with the lower bottom surface of the reaction tank 100. A storage hopper 301 is slidably arranged in the cavity 3004.

[0044] Among them, air leakage holes are evenly opened on the outer wall of the coil pipe 105. The produced water from gas fields enters the reaction tank 100 through the inlet 101, and then is fully mixed with the ozone gas discharged from the air leakage holes. Then it passes through the catalytic net 200, and under the action of the catalyst filled in the inner wall of the catalytic net 200, a catalytic oxidation reaction occurs to oxidize and decompose organic pollutants.

[0045] Among them, primary sieve holes 2001 are circumferentially arrayed on the upper end surface of the catalytic net 200. Filter grooves 2002 are penetrated on the separation net 201. A guiding ring 2003 is arranged on the lower end surface of the separation net 201.

[0046] Preferably, the catalytic net 200 is in an umbrella shape, and the separation net 201 is also in an umbrella shape and overlaps with the upper end surface of the catalytic net 200. The catalytic net 200 and the separation net 201 can rotate relative to each other. The blocking ball 103 is slidably arranged at the central position of the catalytic net 200, so that a large flow of mixed liquid can flow from bottom to top into the space between the catalytic net 200 and the separation net 201, and at the same time prevent backflow.

[0047] Among them, a separation membrane is arranged in the filter groove 2002. The separation membrane allows water flow through, and at the same time blocks large particles and flocculent impurities. The inside of the primary sieve hole 2001 is a porous material composed of a catalyst, which can allow a small part of water flow through, and at the same time adsorb solid particles on the surface.

[0048] Among them, the filtering tank 2002 is filled with a catalyst, thereby increasing the contact area between the produced water from the gas field and the catalyst, improving the reaction rate. The guiding ring 2003 is in a spiral shape and is made of rubber, elastically contacting both sides of the catalytic mesh 200 and the separation mesh 201 simultaneously to scrape and clean the impurities on their surfaces.

[0049] Furthermore, when the catalytic mesh 200 and the separation mesh 201 are fitted close to each other, the water flow is discharged through the separation membrane. The remaining flocculent impurities and particulate matters are first squeezed up and down by the catalytic mesh 200 and the separation mesh 201 to squeeze out the water. Subsequently, when the catalytic mesh 200 and the separation mesh 201 rotate relative to each other, the agglomerated impurities are scraped and cleaned by the guiding ring 2003 and discharged to the edge area of the catalytic mesh 200, realizing the cleaning of the catalytic mesh 200 and the separation mesh 201 and preventing blockage.

[0050] Preferably, a driving column 2004 is provided on the upper end surface of the separation mesh 201. A sleeve 2005 is concentrically provided on the inner wall of the reaction tank 100. The inner wall of the sleeve 2005 is respectively provided with a first rotating groove 2006, a second rotating groove 2007, and a sliding groove 2008. A clamping block 2009 is provided on the outer wall of the driving column 2004, and the clamping block 2009 is slidably arranged on the inner wall of the sliding groove 2008.

[0051] Among them, the first rotating groove 2006 and the second rotating groove 2007 are circular ring grooves and are arranged coaxially and parallelly. The clamping block 2009 is rotatably arranged in the first rotating groove 2006 and the second rotating groove 2007, and the sliding groove 2008 is simultaneously perpendicular to the first rotating groove 2006 and the second rotating groove 2007.

[0052] Among them, a spiral groove 2011 is provided on the outer wall of the driving column 2004. A driving ring 2012 is slidably arranged on the inner wall of the sleeve 2005. A sliding column 2013 is provided on the inner wall of the driving ring 2012, and the sliding column 2013 is slidably arranged in the spiral groove 2011.

[0053] Furthermore, the spiral groove 2011 is a spiral wire groove. The sliding column 2013 is a cylindrical block and is slidably arranged on the inner wall of the spiral groove 2011. The number of turns of the spiral groove 2011 between the driving ring 2012 and the clamping block 2009 determines the number of relative rotation turns of the catalytic mesh 200 and the separation mesh 201. In other embodiments, the distance is adjusted according to the content of impurities in the produced water from the gas field to adjust the cleaning effect.

[0054] In summary, during use, first introduce the produced water from the gas field into the reaction tank 100 through the inlet 101, and then fully mix it with the ozone gas discharged from the air vent hole, driving the driving ring 2012 to move upward. A negative pressure is generated in the space between the catalytic mesh 200 and the separation mesh 201. The produced water from the gas field is attracted to pass through the blocking ball 103 and enter the space between the catalytic mesh 200 and the separation mesh 201. At the same time, the mixed liquid comes into full contact with the catalyst in the primary sieve holes 2001 on the catalytic mesh 200 and a catalytic oxidation reaction occurs. There is also a catalyst in the filter tank 2002 in the separation mesh 201. As the separation mesh 201 moves up and down, the contact area with the mixed liquid increases, thereby improving the catalytic oxidation reaction efficiency.

[0055] Meanwhile, when the separation mesh 201 follows the driving ring 2012 and moves upward to the highest position, the oxidation reaction ends, and then presses the driving ring 2012 to move downward. The sliding column 2013 on the inner wall of the driving ring 2012 drives the spiral groove 2011 to move downward together, thereby driving the driving column 2004 and the clamping block 2009 to slide downward along the sliding groove 2008 at the same time. The separation mesh 201 starts to approach the catalytic mesh 200. The reacted mixed liquid between the separation mesh 201 and the catalytic mesh 200 is screened and separated by the separation membrane in the filter tank 2002. Water flows through while impurities such as flocculent particles are blocked. Most of the water flows upward through the separation mesh 201, and a small part of the water flows back from top to bottom on the surface of the catalyst on the surface of the primary sieve holes 2001. During the backflow, the other end of the primary sieve holes 2001 is backwashed in the reverse direction, thereby realizing cyclic positive and negative flushing by reciprocally switching the water flow direction, achieving real-time cleaning, and preventing the primary sieve holes 2001 from being blocked.

[0056] Among them, when the catalytic mesh 200 comes into contact with the separation mesh 201, the residual particulate impurities in them are extruded and dehydrated and pressed into solids. The clamping block 2009 slides downward into the second rotating groove 2007 and cannot continue to fall. At this time, the driving ring 2012 continues to move downward, and the sliding column 2013 slides on the inner wall of the spiral groove 2011 and causes the driving column 2004 to rotate. The connected separation mesh 201 also rotates, thereby rotating relative to the catalytic mesh 200, and pushing the solid impurities outwards through the guiding ring 2003 to prevent continuous accumulation and blockage. At the same time, the two reaction tanks 100 are cyclically started and stopped. One reaction tank 100 absorbs water and oxidizes while the other reaction tank 100 drains and cleans, ensuring that the produced water from the gas field can always be treated, oxidizing while cleaning, reducing the downtime for cleaning, and improving the treatment efficiency.

[0057] Example 2

[0058] Refer to Figures 1 to 8, which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that the separation net 201 and the catalytic net 200 can rotate relative to each other or rotate together, respectively realizing the functions of squeezing and drying relevant impurities and scraping and cleaning the end face of the catalytic net 200.

[0059] Specifically, a control cylinder 2015 is provided at the axial center position of the catalytic net 200. A tapered hole 2016 is opened in the control cylinder 2015. The plug ball 103 is slidably arranged on the inner wall of the tapered hole 2016. A first elastic member 2017 is provided between the plug ball 103 and the tapered hole 2016.

[0060] Preferably, the tapered hole 2016 is a conical groove hole, and the diameter of the tapered hole 2016 near the inlet 101 is smaller. The plug ball 103 is a spherical ball and is slidably fitted on the inner wall of the tapered hole 2016. The mixed liquid flows through the tapered hole 2016 in the control cylinder 2015 and pushes the plug ball 103 upward, and flows between the catalytic net 200 and the separation net 201.

[0061] Among them, the first elastic member 2017 is a spring. The first elastic member 2017 always pushes the plug ball 103 to move toward the side with a smaller diameter of the tapered hole 2016. Thus, after the mixed liquid passes through the plug ball 103, the plug ball 103 automatically resets to prevent backflow.

[0062] Among them, a claw 2018 is provided on the outer wall of the control cylinder 2015. A fitting groove 2019 is opened on the lower end face of the separation net 201. The claw 2018 is snap-fitted in the fitting groove 2019.

[0063] Preferably, a platform 2021 is provided on the inner wall of the reaction tank 100. A guiding port 2022 is penetrated through the platform 2021. The catalytic net 200 is rotatably fitted in the platform 2021. The platform 2021 is a circular groove cylinder. The catalytic net 200 is rotatably arranged coaxially with the platform 2021. The guiding port 2022 is a circular opening, and there are three such circular openings and they are distributed in a circumferential array.

[0064] Among them, cleaning bristles are provided on the inner wall of the platform 2021. When the catalytic net 200 and the platform 2021 rotate relative to each other, the lower end face of the catalytic net 200 is scraped and cleaned by the cleaning bristles.

[0065] In this embodiment, the separation net 201 and the catalytic net 200 are connected by a ratchet, so that the catalytic net 200 can rotate clockwise following the separation net 201 but cannot rotate counterclockwise. Thus, when the separation net 201 rotates clockwise, the catalytic net 200 rotates synchronously with it. When the separation net 201 rotates counterclockwise, the catalytic net 200 does not rotate with it, so that the two rotate relative to each other.

[0066] Further, when the separation net 201 rotates relative to the catalytic net 200, the catalytic net 200 and the platform 2021 remain stationary, squeezing and drying relevant impurities and removing them. When the separation net 201 and the catalytic net 200 rotate clockwise synchronously, the catalytic net 200 and the platform 2021 rotate relative to each other, scraping and cleaning the lower end surface of the catalytic net 200.

[0067] Embodiment 3

[0068] Referring to Figures 1 - 8 , this is the third embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that the storage hopper 301 realizes sealing when following the rising liquid level and collects the squeezed solids when the liquid level drops, preventing impurities from redissolving and blocking. The rotating shaft adjusts the rotation speed according to the flow rate to control the cleaning efficiency.

[0069] Specifically, a floating ring 3001 is provided on the lower end surface of the storage hopper 301. One end of the reaction tank 100 close to the catalytic net 200 is penetrated with a discharge port 3002, and the height of the discharge port 3002 is lower than the upper end surface of the catalytic net 200.

[0070] Among them, a communication port 3003 is opened on the lower bottom surface of the reaction tank 100, and the cavity 3004 is kept at the same water level as the inside of the reaction tank 100 through the communication port 3003.

[0071] Preferably, when the separation net 201 moves downward to fit the catalytic net 200, the water level is squeezed into the outlet 102 and the reaction tank 100 on the other side. The water level in the cavity 3004 also drops accordingly. The inside of the floating ring 3001 is gas, driving the storage hopper 301 to move up and down following the liquid level.

[0072] Further, when the catalytic net 200 contacts and rotates and squeezes with the separation net 201, the solid sediment is pushed to the edge of the catalytic net 200 by the guiding ring 2003. At the same time, after the liquid level drops, the storage hopper 301 drops to the discharge port 3002, and the solid extrusion enters the storage hopper 301 from the discharge port 3002, realizing timely cleaning of the sediment.

[0073] More preferably, a sliding rod 1001 is provided on the upper end surface of the driving ring 2012. The sliding rod 1001 slides through to the outside of the reaction tank 100, and a plurality of round beads 1002 are linearly arranged on the outer wall of the sliding rod 1001.

[0074] Among them, a first gear 1003 and an intermittent wheel 1004 are rotatably provided on the outer wall of the reaction tank 100. There are two sets of the first gear 1003 and the intermittent wheel 1004 symmetrically arranged with respect to the sliding rod 1001, and a second gear 1005 is meshed between the two first gears 1003 at the same time.

[0075] Preferably, a rotating shaft is provided on the end face of the second gear 1005. The rotating shaft rotates through the outlet 102 and is connected to a motor 1006. A flow sensor is provided on the rotating shaft, and the flow sensor is electrically connected to the motor 1006.

[0076] Further, the round beads 1002 are linearly arrayed along the slide bar 1001. At the same time, the teeth on the intermittent wheel 1004 are engaged in the gaps between the round beads 1002. Thus, when the slide bar 1001 contacts a single intermittent wheel 1004, it can be driven to rotate by the intermittent wheel 1004.

[0077] Among them, the intermittent wheel 1004 is a gear with fan-shaped teeth. And only one of the two intermittent wheels 1004 meshes with the round beads 1002 and drives them to rotate at the same time. When the liquid flow rate in the outlet 102 is large, it proves that the produced water from the gas field enters with a large flow rate. At this time, the rotation speed of the motor 1006 increases to accelerate the cleaning frequency.

[0078] Among them, since the two intermittent wheels 1004 are symmetrically arranged, and only one of the two intermittent wheels 1004 can mesh with the round beads 1002 on the slide bar 1001 at the same time, and the two intermittent wheels 1004 are respectively driven by the first gear 1003 and the second gear 1005 to rotate in the same direction. Therefore, the slide bar 1001 will move up and down following the switching of the intermittent wheels 1004 and drive the drive ring 2012 to slide up and down in a cycle, realizing the automatic cleaning between the catalytic net 200 and the separation net 201.

[0079] In summary, during use, when the motor 1006 is started, it drives the rotating shaft and the second gear 1005 to rotate. The two first gears 1003 meshing with the second gear 1005 rotate in the same direction and drive the intermittent wheel 1004 to rotate. Since only one of the two intermittent wheels 1004 meshes with the round beads 1002 and drives them to rotate at the same time, the slide bar 1001 will move up and down following the switching of the intermittent wheels 1004 and drive the drive ring 2012 to slide up and down in a cycle, realizing the automatic cleaning between the catalytic net 200 and the separation net 201.

[0080] At the same time, when the catalytic net 200 contacts and rotates and squeezes with the separation net 201, the solid sediment is pushed to the edge of the catalytic net 200 by the guide ring 2003. At the same time, after the liquid level drops, the storage hopper 301 drops to the discharge port 3002. The solid extruded matter enters the storage hopper 301 from the discharge port 3002, realizing the timely cleaning of the sediment. After the liquid level rises, the storage hopper 301 moves upward under the push of the floating ring 3001 and blocks the discharge port 3002, facilitating the sealed extrusion of the sediment, improving the cleaning effect, realizing the automatic discharge and collection of the extruded matter, and preventing impurities from dissolving again and blocking.

[0081] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., changes in the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, colors, orientations, etc.). For example, elements shown as integrally formed may be composed of multiple parts or elements, the positions of the elements may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0082] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention or those features that are not relevant to implementing the present invention).

[0083] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be a routine task of design, fabrication and production.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An oxidation combined membrane fouling removal device, characterized in that: include: A reaction tank (100), wherein an inlet (101) and an outlet (102) are respectively arranged on upper and lower sides of an outer wall of the reaction tank (100), a blocking ball (103) is arranged inside the reaction tank (100), a coil (105) is further arranged inside the inlet (101), the coil (105) is used to uniformly inject ozone into the reaction tank (100), the blocking ball (103) is used to allow gas field produced water to flow in one direction, the reaction tank (100) is symmetrically arranged in two groups, and the opening and closing conditions of the two groups of reaction tanks (100) are opposite; A cleaning mechanism, comprising a catalytic net (200) and a separation net (201) both arranged on the inner wall of the reaction tank (100), the catalytic net (200) being used to preliminarily filter gas field produced water and the inner wall of the catalytic net (200) being filled with a catalyst, the separation net (201) and the catalytic net (200) moving closer to each other and away from each other and repeating this movement, and when the two are in contact and in contact, they rotate relative to each other to squeeze and discharge the precipitate after catalytic oxidation; A material storage mechanism, comprising a sleeve tank (300) sleeved on the outer wall of the reaction tank (100), the outer wall of the reaction tank (100) and the inner wall of the sleeve tank (300) forming a cavity (3004), the cavity (3004) being in communication with the lower bottom surface of the reaction tank (100), and a material storage hopper (301) being slidably provided in the cavity (3004); The upper end surface of the catalytic net (200) is provided with a primary sieve hole (201) in a circumferential array, the separation net (201) is provided with a filter groove (2002) running through it, and the lower end surface of the separation net (201) is provided with a guide ring (2003); The upper end surface of the separation net (201) is provided with a driving column (2004); the inner wall of the reaction tank (100) is concentrically provided with a sleeve (2005); the inner wall of the sleeve (2005) is respectively provided with a first rotating groove (2006), a second rotating groove (2007) and a slide groove (2008); the outer wall of the driving column (2004) is provided with a clamping block (2009); the clamping block (2009) is slidably provided on the inner wall of the slide groove (2008); The outer wall of the driving column (2004) is provided with a spiral groove (2011), the inner wall of the sleeve (2005) is slidably provided with a driving ring (2012), the inner wall of the driving ring (2012) is provided with a sliding column (2013), and the sliding column (2013) is slidably provided in the spiral groove (2011).

2. The oxidation combined membrane fouling removal device according to claim 1, characterized in that: A control cylinder (2015) is provided at the axial center of the catalytic net (200), a conical hole (2016) is provided in the control cylinder (2015), the blocking ball (103) is slidably arranged on the inner wall of the conical hole (2016), and a first elastic member (2017) is provided between the blocking ball (103) and the conical hole (2016); The outer wall of the control cylinder (2015) is provided with a clamping claw (2018), the lower end surface of the separation net (201) is provided with an engaging groove (2019), and the clamping claw (2018) is engaged in the engaging groove (2019).

3. The oxidation combined membrane fouling removal device according to claim 2, characterized in that: The inner wall of the reaction tank (100) is provided with a platform (2021), the platform (2021) is penetrated by a guide opening (2022), and the catalytic net (200) is rotatably embedded in the platform (2021).

4. The oxidation combined membrane fouling removal device according to claim 3, characterized in that: A floating ring (3001) is provided on the lower end surface of the storage hopper (301); a discharge port (3002) is formed through one end of the reaction tank (100) close to the catalytic net (200); and the height of the discharge port (3002) is lower than the upper end surface of the catalytic net (200); The bottom surface of the reaction tank (100) is provided with a communication port (3003), and the cavity (3004) is ensured to be level with the water level in the reaction tank (100) through the communication port (3003).

5. The oxidation combined membrane fouling removal device according to claim 4, characterized in that: The upper end surface of the driving ring (2012) is provided with a sliding rod (1001), and the sliding rod (1001) slides through the outside of the reaction tank (100), and a plurality of round beads (1002) are provided in a linear array on the outer wall of the sliding rod (1001).

6. The oxidation combined membrane fouling removal device according to claim 5, characterized in that: The outer wall of the reaction tank (100) is rotatably provided with a first gear (1003) and an intermittent wheel (1004); two sets of the first gear (1003) and the intermittent wheel (1004) are symmetrically provided with respect to the slide bar (1001); and a second gear (1005) is simultaneously meshed between the two first gears (1003).

7. The oxidation combined membrane fouling removal device according to claim 6, characterized in that: The end surface of the second gear (1005) is provided with a rotating shaft, which rotates through the outlet (102) and is connected to a motor (1006). A flow sensor is provided on the rotating shaft, and the flow sensor is electrically connected to the motor (1006).

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