CN217895274U - Sewage treatment device for oilfield water injection equipment - Google Patents

Abstract

The utility model discloses an oil field water injection equipment sewage treatment plant, including separating mechanism and filtering mechanism, separating mechanism and filtering mechanism's inside intercommunication, separating mechanism's inside is provided with the separator and with the edulcoration pipe of separator intercommunication, inside solid particle impurity in with sewage separates the edulcoration pipe through the rotation of separator, and the inside of filtering mechanism is carried to the sewage that will separate solid particle impurity, filtering mechanism includes the air supporting and selects the device, produces a large amount of slight bubbles through the air supporting and selects the device, thereby dirty oil and the suspension solid particle who drives in the sewage through the bubble emerge, carry out the sewage treatment who corresponds, the utility model provides a separating mechanism adopts the separator to be used for separating the suspension that contains the solid volume more and the granule is great, adopts the air supporting to select the device to improve suspension oil globule and solid particle buoyancy lifting speed greatly, shortens process time, finally is favorable to solving the problem of sewage treatment and water oil separating and degerming.

Description

Sewage treatment device for oilfield water injection equipment

Technical Field

The utility model relates to an oil field water injection equipment technical field specifically is an oil field water injection equipment sewage treatment plant.

Background

With the development of petrochemical industry, the discharge amount of oily wastewater is increasing day by day. These oily sewage may cause environmental pollution and even harm to human health, so it is necessary to treat it, but there are still some problems.

The first problem is that: the oily sewage has the characteristics of high viscosity, complex components, strong emulsion stability and difficult treatment, and because the sewage containing a large amount of impurities is injected back into the underground stratum, after a period of operation, the impurities can be gradually accumulated in the stratum, the water injection quantity can be influenced, and finally the stratum is completely blocked, so that the aim of water injection and oil displacement can not be achieved.

The second problem is that: the water quality of the oilfield produced water treatment system fluctuates greatly, especially the bacteria content exceeds the standard seriously, the water quality after treatment is difficult to meet the requirement of oilfield water injection, and the service life of equipment is shortened.

Therefore, a sewage treatment device for oilfield water injection equipment is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil field water injection equipment sewage treatment plant does benefit to the problem of sewage treatment and water oil separating and degerming in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an oil field water injection equipment sewage treatment plant, including separating mechanism and filtering mechanism, separating mechanism and filtering mechanism's inside intercommunication, separating mechanism's inside be provided with the separator and with the edulcoration pipe of separator intercommunication, inside the solid particle impurity separation in with sewage to the edulcoration pipe through the rotation of separator, and the inside of filtering mechanism is carried to the sewage that will separate solid particle impurity, filtering mechanism includes the air supporting and selects the device, produce a large amount of slight bubbles through the air supporting and select the device, thereby dirty oil and the suspension solid particle who drives in the sewage through the bubble emerge, carry out corresponding sewage treatment.

Preferably, the water inlet end of the separator is provided with a water inlet pipe, a first connecting pipe is arranged between the separator and the filtering mechanism, the separator and the filtering mechanism are communicated through the first connecting pipe, and the water outlet pipe is installed at the bottom of the filtering mechanism.

Preferably, the separating mechanism comprises a frame body, a motor is installed at the center of the bottom of the frame body, the impurity removing pipe is installed at the bottom of the frame body and is parallel to the motor, four groups of screws are connected to the periphery of the bottom of the frame body through connecting blocks in a threaded mode, four groups of supporting columns are installed at the bottoms of the screws, a cover plate is installed at the top of the frame body and is fixedly connected with the first connecting pipe through a flange, and a first water inlet is formed in the joint of one side of the frame body and the water inlet pipe.

Preferably, the separator is arranged inside the frame body, a cavity is formed inside the separator, a plurality of groups of holes are formed in the bottom of the separator and communicated with the impurity removing pipe, and the separator is driven to rotate by the motor.

Preferably, the filtering mechanism comprises a square box, one side of the square box, which is far away from the separating mechanism, is provided with a glass plate, the bottom of one side of the square box, which is close to the separating mechanism, is movably connected with an oil storage tank through a second connecting pipe, and the center of the bottom of the square box is provided with an air flotation device.

Preferably, the square box includes the second water inlet, the top center department at the square box is seted up to the second water inlet, the hybrid chamber has been seted up in the middle of the inside of square box, the oil storage chamber has been seted up to one side that the hybrid chamber is close to separating mechanism, be provided with the oil removal board between oil storage chamber and the hybrid chamber, the oil-out has been seted up to the bottom center department in oil storage chamber, the chamber that catchments has been seted up to one side that separating mechanism was kept away from to the hybrid chamber, it is provided with the baffle to catchment between chamber and the hybrid chamber, one side that the last baffle is close to the outlet pipe is provided with down the baffle, the bottom center department in the chamber that catchments has seted up, the outlet pipe is installed to outlet department, the air inlet has been seted up to the bottom center department in hybrid chamber.

Preferably, the oil outlet is movably connected with an oil storage tank through a second connecting pipe, and the bottom of the air inlet is provided with an air flotation device.

Preferably, the oil removal board sets up between hybrid chamber and oil storage chamber, and the oil removal board sets up in the inside bottom of square box and highly be two-thirds of square box, and lower baffle setting is in the inside bottom of square box and highly be two-fifths of square box, goes up the baffle setting and highly be two-thirds of square box on the inside top of square box.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the separation mechanism uses a centrifugal filter for separating a suspension having a high solids content and large particles. When the dirty liquid to be purified enters the separator rotating at high speed, the solid particles therein are trapped on the wall of the separator due to the action of centrifugal force, and the clean liquid flows out from the upper side of the separator, so that sand and stones in the water can be separated. The centrifugal filter is based on the working principle of gravity and centrifugal force to remove solid particles heavier than water. Water enters the centrifuge body tangentially from the water inlet pipe, and the water rotates to generate centrifugal force to push sediment and other solid particles with higher density to move towards the pipe wall to form rotational flow, so that sand and stones are promoted to enter the impurity removing pipe, and clear water enters the first connecting pipe downstream to complete the separation of water and solid particle impurities dissolved in the water.

2. The filtering mechanism generates a large amount of fine bubbles in oily sewage, so that suspended oil droplets and solid particles with the particle size of 0.25-25 microns in water are adhered to the bubbles and float to the water surface together, and the aim of removing dirty oil and suspended solid particles in the sewage is fulfilled. The floating speed of the suspended oil droplets and solid particles can be greatly improved and the treatment time can be shortened by adopting air flotation. It features large treating quantity and high treating efficiency, and is suitable for the oily sewage of heavy oil field and the oily sewage containing high emulsified oil content.

Drawings

Fig. 1 is a schematic front view of the three-dimensional structure of the present invention;

fig. 2 is a schematic bottom perspective view of the separating mechanism of the present invention;

FIG. 3 is a schematic view of the overlooking and cutting three-dimensional structure of the frame body of the present invention;

FIG. 4 is a schematic front perspective view of the filtering mechanism of the present invention;

fig. 5 is a schematic view of the front view of the square box of the present invention.

In the figure: 1. a water inlet pipe; 2. a separating mechanism; 3. a first connecting pipe; 4. a filtering mechanism; 5. a water outlet pipe; 21. a frame body; 22. a cover plate; 23. a flange; 24. a first water inlet; 25. connecting blocks; 26. a screw; 27. a support post; 28. a motor; 29. an impurity removal pipe; 211. a separator; 212. a hole; 41. a square box; 42. a glass plate; 43. an air flotation device; 44. an oil storage tank; 45. a second connection pipe; 411. a second water inlet; 412. an upper partition plate; 413. an oil baffle plate; 414. a lower partition plate; 415. an oil outlet; 416. an air inlet; 417. a water outlet; 418. a mixing chamber; 419. an oil storage chamber; 420. a water collecting cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

Referring to fig. 1-5, a sewage treatment device for oilfield water injection equipment comprises a water inlet pipe 1, wherein one end of the water inlet pipe 1 is provided with a separation mechanism 2, one side of the separation mechanism 2 is provided with a filter mechanism 4, the separation mechanism 2 is communicated with the filter mechanism 4 through a first connecting pipe 3, and the bottom of the filter mechanism 4 is provided with a water outlet pipe 5; separating mechanism 2 includes framework 21, the bottom center department of framework 21 installs motor 28, one side of motor 28 is provided with edulcoration pipe 29, edulcoration pipe 29 is installed in framework 21 bottom and is parallel in motor 28, there are four groups of screws 26 at the bottom of framework 21 through connecting block 25 threaded connection all around, four groups of pillars 27 are installed to the bottom of screw 26, apron 22 is installed at the top of framework 21, apron 22 passes through flange 23 and first connecting pipe 3 fixed connection, first water inlet 24 has been seted up at one side of framework 21 and the department of meeting of inlet tube 1, sewage gets into separating mechanism 2 from inlet tube 1, water that separating mechanism 2 got rid of solid particulate matter such as gravel through the separation mechanism 2 is through the inside hydraulic extrusion of separating mechanism's 2 water with the clean water of separation input entering filter mechanism 4 through first connecting pipe 3, water in filter mechanism 4 is through the water oil-water separation and the degerming back with the clean water of filtering through outlet pipe 5 discharge, in addition the setting up of convenient separation gravel and sand etc. of motor 28 discharges.

The frame body 21 comprises a separator 211, a cavity is formed in the separator 211, a plurality of groups of holes 212 are formed in the bottom of the separator 211, the holes 212 are communicated with the impurity removing pipe 29, the separator 211 is driven to rotate by the motor 28, the motor 28 is started by turning on a switch on the motor 28, the motor 28 works to drive the frame body 21 to rotate, water input into the frame body 21 is driven by the centrifugal force, solid particles in the water are trapped on the wall of the separator 211, clean liquid flows out from the upper side of the separator 211, and sand and stones in the water can be separated.

The filtering mechanism 4 comprises a square box 41, a glass plate 42 is installed on one side, far away from the separating mechanism 2, of the square box 41, an oil storage tank 44 is movably connected to the bottom of one side, close to the separating mechanism 2, of the square box 41 through a second connecting pipe 45, an air flotation device 43 is installed at the center of the bottom of the square box 41, the air flotation device 43 adopts an air flotation oil removing technology, a large number of fine bubbles are generated in oily sewage, suspended oil drops with particle sizes of 0.25-25 micrometers in water and solid particles are attached to the bubbles and float to the water surface together, and therefore the purpose of removing dirty oil and suspended solid particles in the sewage is achieved. The floating speed of the suspended oil droplets and solid particles can be greatly improved and the treatment time can be shortened by adopting air flotation. It features large treating quantity and high treating efficiency, and is suitable for the oily sewage of thick oil field and the oily sewage containing high emulsified oil.

The glass plate 42 is hermetically installed in the middle of one side of the square box 41, so that the filtering condition of the internal water quality can be observed, and the filtering condition can be conveniently controlled and observed at any time. The square box 41 comprises a second water inlet 411, the second water inlet 411 is arranged at the center of the top of the square box 41, a mixing cavity 418 is arranged in the middle of the inside of the square box 41, an oil storage cavity 419 is arranged on one side of the mixing cavity 418 close to the separating mechanism 2, an oil separation plate 413 is arranged between the oil storage cavity 419 and the mixing cavity 418, an oil outlet 415 is arranged at the center of the bottom of the oil storage cavity 419, a water collection cavity 420 is arranged on one side of the mixing cavity 418 away from the separating mechanism 2, an upper partition plate 412 is arranged between the water collection cavity 420 and the mixing cavity 418, a lower partition plate 414 is arranged on one side of the upper partition plate 412 close to the water outlet pipe 5, a water outlet 417 is arranged at the center of the bottom of the water collection cavity 420, a water outlet pipe 5 is arranged at the center of the bottom of the mixing cavity 418, sewage entering the mixing cavity 418 is treated by the air flotation device 43, the oil floats on the upper side because the density of the oil is lower than water, the sewage is separated into the oil storage cavity 419 by the oil separation plate 413, passes through the oil outlet 415, then passes through the second connecting pipe 45, and reaches the oil storage tank 44, and is collected, and the water passes through the water outlet pipe 5 after passing through the lower partition plate 414 and enters the water collection cavity 420. The oil outlet 415 is movably connected with an oil storage tank 44 through a second connecting pipe 45, the bottom of the air inlet 416 is provided with an air flotation device 43, the oil storage tank 44 can collect and recycle the treated oil, and meanwhile, the oil storage tank can be replaced after being fully collected, and the air flotation device 43 can generate a large amount of fine bubbles to enable particles in water to adhere to the bubbles and float to the water surface, so that the purpose of removing dirty oil and suspended solid particles in the sewage is achieved.

Oil baffle 413 sets up between mixing chamber 418 and oil storage chamber 419, oil baffle 413 sets up the bottom and highly be two-thirds of square box 41 in square box 41 inside, lower baffle 414 sets up the bottom and highly be two-fifths of square box 41 in square box 41 inside, it is two-thirds of square box 41 to go up baffle 412 sets up the inside top of square box 41 and highly be square box 41, because the density of oil and water is different, oil floats on water, so can collect the oil on upper strata through oil baffle 413, it is discharged in reaching water collecting chamber 420 to be filtered water through the space between upper baffle 412 and lower baffle 414, put in the germicide in water collecting chamber 420 simultaneously and be used for getting rid of and have sulfate reducing bacteria, indisputable bacterium and saprophytic bacterium to the biggest bacterium harm to the oil field, sulfate reducing bacteria and indisputable bacterium utilize their reducing oxidation equipment can corrode the pipeline and wear, and saprophytic bacterium has the relic to block up the pipeline owing to corrode the animal and plant corpse, the life of oil field pipeline and equipment has been increased greatly.

The working principle is as follows:

when the separating mechanism 2 works, sewage enters the separating mechanism 2 from the water inlet pipe 1, a switch on the motor 28 is turned on to start the motor 28 to rotate, the motor 28 works to drive the frame body 21 to rotate, water input into the frame body 21 passes through the action of centrifugal force, solid particles in the water are trapped on the wall of the separator 211, and clear liquid flows out from the upper side of the separator 211 to separate sand and stones in the water. The separation mechanism 2 employs a centrifugal filter for separating a suspension having a high solids content and large particles. When the dirty liquid to be purified enters the separator 211 rotating at a high speed, the solid particles therein are trapped on the wall of the separator 211 due to the centrifugal force, and the clean liquid flows out from the upper side of the separator 211, so that sand and rocks in the water can be separated. The centrifugal filter is based on the working principle of gravity and centrifugal force to remove solid particles heavier than water. Water enters the centrifuge body tangentially from the water inlet pipe 1, centrifugal force is generated through rotation, silt and other solid particles with higher density are pushed to move towards the pipe wall to form rotational flow, sand and stones are promoted to enter the impurity removing pipe 29, clear water enters the first connecting pipe 3 downstream, and separation of water and solid particle impurities dissolved in the water is completed. After the separation mechanism 2 removes solid particles such as sand and stone, the water is squeezed by the internal water pressure of the separation mechanism 2, and the water which is completely separated is input into the filtering mechanism 4 through the first connecting pipe 3.

When 4 mechanisms of filter mechanism during operation, this 4 mechanisms of filter mechanism produce a large amount of slight bubbles in oily sewage, make the aquatic particle diameter be 0.25 ~ 25 microns suspension oil globules and solid particle adhere to the bubble on, together float to the surface of water to reach the purpose of the dirty oil and the suspension solid particle in the sewage, water in the filter mechanism 4 is discharged through outlet pipe 5 with the clean water of filtration after water oil separating and degerming, to this operation end, the utility model provides a separating mechanism adopts the separator to be used for separating the great suspension of the more and granule that contains the solid volume, adopts air supporting to select the device to improve suspension oil globules and solid particle buoyancy velocity greatly, shortens the processing time, finally is favorable to solving the problem of sewage treatment and water oil separating and degerming.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention.

Claims (8)

1. The utility model provides an oil field water injection equipment sewage treatment plant which characterized in that: including separating mechanism (2) and filtering mechanism (4), separating mechanism (2) and the inside intercommunication of filtering mechanism (4), the inside of separating mechanism (2) is provided with separator (211) and impurity removal pipe (29) with separator (211) intercommunication, and rotation through separator (211) is inside with the solid particle impurity separation in the sewage to impurity removal pipe (29), and will separate the inside of carrying filtering mechanism (4) through the sewage of solid particle impurity, filtering mechanism (4) include air flotation device (43), select device (43) through the air flotation and produce a large amount of slight bubbles to dirty oil and the suspension solid particle who drives in the sewage through the bubble float out the surface of water, carry out corresponding sewage treatment.

2. The oilfield flooding equipment sewage treatment plant of claim 1, characterized in that: the water inlet end of the separator (211) is provided with a water inlet pipe (1), a first connecting pipe (3) is arranged between the separator (211) and the filtering mechanism (4), the separator (211) and the filtering mechanism (4) are communicated through the first connecting pipe (3), and a water outlet pipe (5) is installed at the bottom of the filtering mechanism (4).

3. The sewage treatment device of the oilfield flooding equipment as recited in claim 2, wherein: separating mechanism (2) includes framework (21), motor (28) are installed at the bottom center department of framework (21), edulcoration pipe (29) are installed in framework (21) bottom and in motor (28) parallel, there are four groups of screws (26) bottom of framework (21) through connecting block (25) threaded connection all around, four groups of pillar (27) are installed to the bottom of screw (26), apron (22) are installed at the top of framework (21), apron (22) are through flange (23) and first connecting pipe (3) fixed connection, first water inlet (24) have been seted up in one side of framework (21) and inlet tube (1) department of meeting.

4. The oilfield flooding equipment sewage treatment plant of claim 3, characterized in that: separator (211) set up in the inside of framework (21), the cavity has been seted up to the inside of separator (211), multiunit hole (212) have been seted up to the bottom of separator (211), hole (212) communicate with each other with edulcoration pipe (29), motor (28) drive separator (211) and rotate.

5. The oilfield flooding equipment sewage treatment plant of any one of claims 2-4, wherein: filtering mechanism (4) include square box (41), glass board (42) are installed to one side that separating mechanism (2) were kept away from in square box (41), there is oil storage tank (44) square box (41) one side bottom of being close to separating mechanism (2) through second connecting pipe (45) swing joint, air flotation device (43) are installed at square box (41) bottom center.

6. The oilfield flooding equipment sewage treatment plant of claim 5, characterized in that: square box (41) includes second water inlet (411), the top center department at square box (41) is seted up in second water inlet (411), hybrid chamber (418) have been seted up in the middle of the inside of square box (41), oil storage chamber (419) have been seted up to one side that hybrid chamber (418) are close to separating mechanism (2), be provided with oil removal board (413) between oil storage chamber (419) and hybrid chamber (418), oil-out (415) have been seted up to the bottom center department of oil storage chamber (419), water collection chamber (420) have been seted up to one side that separating mechanism (2) were kept away from in hybrid chamber (418), be provided with between water collection chamber (420) and hybrid chamber (418) baffle (412), one side that goes up baffle (412) are close to outlet pipe (5) is provided with down baffle (414), water outlet (417) have been seted up to the bottom center department in water collection chamber (420), outlet pipe (5) have been installed to water outlet (417), air inlet (416) have been seted up to the bottom center department in hybrid chamber (418).

7. The oilfield flooding equipment sewage treatment plant of claim 6, characterized in that: the oil outlet (415) is movably connected with an oil storage tank (44) through a second connecting pipe (45), and an air flotation device (43) is installed at the bottom of the air inlet (416).

8. The oilfield flooding equipment sewage treatment plant of claim 7, characterized in that: oil removal board (413) set up between hybrid chamber (418) and oil storage chamber (419), oil removal board (413) set up the bottom and highly be the two-thirds of square box (41) in square box (41) inside, baffle (414) set up the bottom and highly be the two-fifths of square box (41) in square box (41) inside down, go up baffle (412) set up the inside top and highly be the two-thirds of square box (41) in square box (41).

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