Device for separating mercury and arsenic in produced water of oil and gas field

Abstract

The utility model discloses mercury and arsenic separation equipment in produced water of an oil and gas field, which comprises a shell, a mixing shell arranged at the top of the inner wall of the shell, a servo motor arranged in the shell, a rotary annular shell arranged in the shell, and two pluggable filter screens arranged in the annular shell, the servo motor is installed at the bottom of the inner wall of the shell and corresponds to the bottom of the annular shell, and the top end of an output shaft of the servo motor is fixedly connected with the bottom of the annular shell. Mercury and arsenic in water react with the stirring structure in the mixing shell by adding chemical substances to generate insoluble precipitates, then the insoluble precipitates are filtered and separated through the filter screens, and when the filter screens are blocked, the servo motor drives the annular shell to rotate, so that the positions of the two filter screens can be changed, and the filter screens can be conveniently separated. The blocked filter screen can be detached to be cleaned, and the other filter screen continues to filter and separate the blocked filter screen, so that the influence on the working efficiency is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to water mercury arsenic separation technical field, concretely is a kind of mercury arsenic separation equipment in oil and gas field produced water. BACKGROUND

[0002] Wastewater produced in the development process of oil and gas field contains mercury arsenic, so separation equipment is needed to separate mercury arsenic in water.

[0003] But the traditional mercury arsenic separation equipment in water is mixed with mercury arsenic by adding chemical substances to generate insoluble precipitate, and then separated by filtration, and filtered through filter screen, when the filter screen is blocked, the whole separation equipment needs to stop working, so as to wait to disassemble the filter screen for cleaning, thereby seriously affecting its working efficiency, and the filter screen needs to be manually operated when disassembled from the separation equipment, thereby increasing the difficulty of disassembling the filter screen, therefore, we provide a kind of mercury arsenic separation equipment in oil and gas field produced water. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of mercury arsenic separation equipment in oil and gas field produced water to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of mercury arsenic separation equipment in oil and gas field produced water, including shell body, and mixed shell installed in the top of shell body inner wall, the inside of shell body is provided with rotatable annular shell, the inside of annular shell is provided with two pluggable filter screens.

[0006] Preferably, it further includes servo motor, the servo motor is installed at the bottom of shell body inner wall and corresponds the bottom of annular shell, the top of servo motor output shaft is fixedly connected with the bottom of annular shell, and the inner wall of annular shell is installed with baffle.

[0007] Preferably, the left and right sides of the inner wall of annular shell and the left and right sides of baffle are all installed with top block, the top of top block is installed with clamping block, the bottom of filter screen and the position corresponding clamping block are provided with clamping groove, and the top of clamping block penetrates clamping groove and extends to its inside and is in contact with the inner wall of clamping groove.

[0008] Preferably, iron block is installed in the recess of the top of filter screen, the right side of shell body is installed with mounting plate, the bottom of mounting plate is installed with first electric push rod, the bottom end of first electric push rod is installed with movable plate, the left side of movable plate is installed with rotary motor, and the right end of rotary motor output shaft penetrates movable plate and extends to its outside.

[0009] Preferably, the right end of the rotating motor output shaft is provided with an adjusting plate, the top of the adjusting plate is provided with an electromagnet matched with the iron block, the bottom of the adjusting plate is provided with a cleaning motor through a base, and the bottom end of the cleaning motor output shaft is provided with a cleaning brush.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1、 the utility model discloses a mixing shell in the stirring structure is with the reaction of mercury arsenic in water through the addition of chemical substance and its generation difficultly soluble precipitate, then through the filtration screen to it carries out filtration separation, when the filtration screen appears the blockage, through the servo motor drive annular shell rotation movement, the position of two filtration screens can exchange, make the filtration screen of blockage can be disassembled and clean, another filtration screen then continues to it and carries out filtration separation, thereby avoid the influence work efficiency.

[0012] 2、 the utility model discloses through the first electric push rod drive cleaning brush downward movement, make the cleaning brush can clean the iron block on the filtration screen that needs to disassemble, avoid the iron block on the gathering residual, make the electromagnet can with the iron block accurate and attract, thereby automatically take out the filtration screen from annular shell and disassemble, avoid needing manual operation, improved the convenience of disassembly. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is the three-dimensional structure schematic diagram of annular shell, filtration screen, baffle and iron block of the utility model;

[0015] Figure 3 It is the structure section view of the utility model's front view;

[0016] Figure 4 It is the structure section view of annular shell, filtration screen, servo motor, electromagnet and cleaning brush front view of the utility model.

[0017] In the drawing: 1 shell, 2 mixing shell, 3 annular shell, 4 filtration screen, 5 servo motor, 6 baffle, 7 top block, 8 clamping block, 9 clamping groove, 10 iron block, 11 mounting plate, 12 first electric push rod, 13 movable plate, 14 rotating motor, 15 adjusting plate, 16 electromagnet, 17 cleaning motor, 18 cleaning brush, 19 stirring motor, 20 stirring rod, 200 discharge pipe, 21 second electric push rod, 22 pressing plate, 23 baffle. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0019] Please refer to Figures 1-4 The utility model provides a kind of mercury arsenic separation equipment in oil and gas field produced water, including shell 1, and the mixing shell 2 of installation in the top of shell 1 inner wall, the inside of shell 1 is provided with rotatable annular shell 3, annular shell 3 right side penetrates shell 1 and extends to its outside, the inside of annular shell 3 is provided with two pluggable filter screen 4.

[0020] Further, the top of shell 1 is fixedly connected with stirring motor 19, the bottom end of the output shaft of stirring motor 19 penetrates shell 1 and mixing shell 2 from top to bottom and extends to the inside of mixing shell 2, the bottom end of the output shaft of stirring motor 19 is fixedly connected with stirring rod 20, by setting stirring motor 19 and stirring rod 20, to facilitate mixing and stirring of raw materials.

[0021] Further, the bottom of mixing shell 2 is fixedly connected with discharge pipe 200 in communication therewith, the bottom of the left and right sides of annular shell 3 is fixedly connected with discharge pipe in communication therewith, electromagnetic valve is arranged on discharge pipe 200 and discharge pipe, which side filter screen 4 filters medium, then open electromagnetic valve on which side discharge pipe, the top of shell 1 is fixedly connected with liquid inlet pipe in communication therewith, the left side of the top of shell 1 is provided with feeding cover, the left side of shell 1 is fixedly connected with controller, the bottom of the left side of shell 1 is fixedly connected with material guide pipe in communication therewith.

[0022] Further, the bottom of mixing shell 2 is fixedly connected with discharge pipe 200 in communication therewith, the bottom of the left and right sides of annular shell 3 is fixedly connected with discharge pipe in communication therewith, electromagnetic valve is arranged on discharge pipe 200 and discharge pipe, which side filter screen 4 filters medium, then open electromagnetic valve on which side discharge pipe, the top of shell 1 is fixedly connected with liquid inlet pipe in communication therewith, the left side of the top of shell 1 is provided with feeding cover, the left side of shell 1 is fixedly connected with controller, the bottom of the left side of shell 1 is fixedly connected with material guide pipe in communication therewith.

[0023] Further, the bottom of the inner wall of the shell 1 is fixedly connected with a baffle 23, the front and rear sides of the baffle 23 are fixedly connected with the inner wall of the shell 1 respectively, and the top of the baffle 23 is in rotational contact with the bottom of the annular shell 3. By arranging the baffle 23, the effect of intercepting the filtered liquid is achieved, so as to avoid the influence of the liquid on the servo motor 5.

[0024] The mercury and arsenic in the water are reacted with chemicals to generate insoluble precipitates through the stirring structure in the mixing shell 2, and then the insoluble precipitates are filtered and separated through the filter screen 4. When the filter screen 4 is blocked, the annular shell 3 is driven to rotate by the servo motor 5, so that the positions of the two filter screens 4 can be exchanged, the blocked filter screen 4 can be disassembled for cleaning, and the other filter screen 4 continues to filter and separate, thereby avoiding affecting the work efficiency.

[0025] The recess at the top of the filter screen 4 is fixedly connected with an iron block 10, the right side of the shell 1 is fixedly connected with a mounting plate 11, the bottom of the mounting plate 11 is fixedly connected with a first electric push rod 12, the bottom end of the first electric push rod 12 is fixedly connected with a movable plate 13, the left side of the movable plate 13 is fixedly connected with a rotary motor 14, the right end of the output shaft of the rotary motor 14 extends to the outside of the movable plate 13, the right end of the output shaft of the rotary motor 14 is fixedly connected with an adjusting plate 15, the top of the adjusting plate 15 is fixedly connected with an electromagnet 16 used in cooperation with the iron block 10, the bottom of the adjusting plate 15 is fixedly connected with a cleaning motor 17 through a base, and the bottom end of the output shaft of the cleaning motor 17 is fixedly connected with a cleaning brush 18.

[0026] Further, the recess at the bottom of the mixing shell 2 is fixedly connected with a second electric push rod 21, and the bottom end of the second electric push rod 21 is fixedly connected with a pressing plate 22 used in cooperation with the filter screen 4. By arranging the second electric push rod 21 and the pressing plate 22, the intercepted materials can be conveniently extruded, so that the liquid can be discharged through the filter screen 4, and the effect of pressure filtration is achieved.

[0027] Specifically, when the left filter screen 4 is blocked, the servo motor 5 is started, the servo motor 5 drives the annular shell 3 to rotate 180 degrees through the output shaft, so that the positions of the two filter screens 4 are exchanged, the blocked filter screen 4 moves to the right side, and the other filter screen 4 continues to filter, then the first electric push rod 12 is started, the first electric push rod 12 drives the cleaning brush 18 to move downward through the movable plate 13, and the cleaning motor 17 is started at the same time, the cleaning motor 17 drives the cleaning brush 18 to rotate through the output shaft, so that the precipitate on the iron block 10 on the right side is cleaned, and the precipitate is away from the iron block 10, after cleaning, the first electric push rod 12 drives the adjusting plate 15 to move upward first, so that the cleaning brush 18 and the iron block 10 are separated, then the rotating motor 14 is started, the rotating motor 14 drives the adjusting plate 15 to rotate 180 degrees through the output shaft, so that the electromagnet 16 faces downward, then the first electric push rod 12 is started again, and the electromagnet 16 is turned on, so that the electromagnet 16 moves downward and is attracted to the iron block 10, then the electromagnet 16 and the iron block 10 are driven upward by the first electric push rod 12, the iron block 10 drives the filter screen 4 on the right side to be separated from the annular shell 3, and the electromagnet 16 is turned off, so that the electromagnet 16 does not have suction force, and the filter screen 4 can be taken out for cleaning.

[0028] Specifically, the servo motor 5, the first electric push rod 12, the rotating motor 14, the electromagnet 16, the cleaning motor 17, the stirring motor 19 and the electromagnetic valve are electrically connected with the controller.

[0029] The first electric push rod 12 drives the cleaning brush 18 to move downward, so that the cleaning brush 18 can clean the iron block 10 on the filter screen 4 that needs to be disassembled, avoids the accumulation of residues on the iron block 10, and enables the electromagnet 16 to be accurately attracted to the iron block 10, so that the filter screen 4 is automatically disassembled and separated from the annular shell 3, avoiding manual disassembly and assembly, and improving the convenience of disassembly and assembly.

[0030] In use, the water generated in the oil and gas field exploitation is discharged into the mixing shell 2, then chemical substances are added into the mixing shell 2, the stirring motor 19 is started, the stirring motor 19 drives the stirring rod 20 to rotate through the output shaft to mix them, so that the chemical substances react with mercury arsenic to generate insoluble precipitate, (the chemical substances are, for example, sodium sulfide, etc.);

[0031] The electromagnetic valve on the discharge pipe 200 is turned on, so that the precipitate and the liquid in the mixing shell 2 are discharged into the annular shell 3, filtered through the filter screen 4 on the left side, then discharged through the discharge pipe on the left side, and finally discharged to the outside through the guide pipe, and the filtrate discharged to the outside is the water after removal of mercury arsenic;

[0032] When the liquid and the precipitate are all discharged into the annular shell 3, the second electric push rod 21 is started, and the second electric push rod 21 drives the pressing plate 22 to move downwards, so that the filter pressing operation is performed on the precipitate, so that the liquid can be discharged in whole.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mercury-arsenic separation apparatus for oil and gas field produced water, characterized by: The utility model provides a kind of mixing shell, including shell (1), and mixed shell (2) is installed on the top of the inner wall of shell (1), the inside of the shell (1) is provided with rotatable annular shell (3), the inside of the annular shell (3) is provided with two pluggable filter screen (4).

2. The equipment for separating mercury and arsenic in oil and gas field produced water according to claim 1, characterized in that: It also includes a servo motor (5) installed at the bottom of the inner wall of the shell (1) and corresponding to the bottom of the annular shell (3), the top end of the output shaft of the servo motor (5) is fixedly connected to the bottom of the annular shell (3), and the inner wall of the annular shell (3) is provided with a partition (6).

3. The device for separating mercury and arsenic in oil and gas field produced water according to claim 2, characterized in that: The left and right sides of the inner wall of the annular shell (3) and the left and right sides of the partition (6) are both provided with a top block (7), the top of the top block (7) is provided with a clamping block (8), the bottom of the filter screen (4) and the position corresponding to the clamping block (8) are provided with a clamping groove (9), the top of the clamping block (8) penetrates the clamping groove (9) and extends into the inner wall of the clamping groove (9).

4. The device for separating mercury and arsenic in produced water in oil and gas fields according to claim 3, characterized in that: An iron block (10) is installed in the recess on the top of the filter screen (4), the right side of the shell (1) is provided with a mounting plate (11), the bottom of the mounting plate (11) is provided with a first electric push rod (12), the bottom end of the first electric push rod (12) is provided with a movable plate (13), the left side of the movable plate (13) is provided with a rotary motor (14), the right end of the output shaft of the rotary motor (14) penetrates the movable plate (13) and extends to the outside.

5. The device for separating mercury and arsenic in oil and gas field produced water according to claim 4, characterized in that: The right end of the output shaft of the rotary motor (14) is provided with an adjusting plate (15), the top of the adjusting plate (15) is provided with an electromagnet (16) used in cooperation with the iron block (10), the bottom of the adjusting plate (15) is provided with a cleaning motor (17) through a base, and the bottom end of the output shaft of the cleaning motor (17) is provided with a cleaning brush (18).

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