CN217025420U - Oil-water separating device - Google Patents

Abstract

The utility model relates to an oil-water separation device, which comprises a filter box, wherein a separator is supported at the upper part of the filter box and comprises a cylindrical vortex cavity, an overflow pipe extending outwards is arranged at the top end of the cylindrical vortex cavity and connected with an oil discharge pipeline, a tangential jet pipe communicated with the inner cavity of the cylindrical vortex cavity is arranged outside the cylindrical vortex cavity, the exposed section of the tangential jet pipe is communicated with a liquid inlet pipeline provided with a liquid supply pump, the lower port end of the cylindrical vortex cavity is smoothly connected with the large port end of a conical pipe section, the small port end of the conical pipe section extends downwards to form a bottom flow pipe, a liquid storage pipe is arranged in the middle part of the filter box and is in sealing fit with the filter box, the liquid storage pipe is communicated with a bottom flow pipe, a plurality of coalescence filter elements are arranged in the filter box, the lower extending section of the liquid storage pipe extending out of the filter box is communicated with the coalescence filter elements through coalescence pipelines, a plurality of separation filter elements are arranged in the filter box, the oil discharge port of the separation filter elements is connected with the oil discharge pipeline, and a plurality of liquid discharge pipes are arranged at the bottom of the filter box.

Description

Oil-water separating device

Technical Field

The utility model relates to petrochemical equipment, in particular to an oil-water separation device.

Background

The oil-containing waste water in petroleum industry mainly comes from the processes of petroleum exploitation, petroleum refining, petrochemical industry and the like. The waste water in the oil exploitation process mainly comes from the separation water of crude oil with water, equipment washing water in the drilling and lifting process, ground precipitation of well sites and oil tank areas and the like. Petroleum refining, the oily waste water of petrochemical mainly comes from apparatus for producing's oil-water separation process and oil, the washing of equipment, the process of washing, not only contain the oil slick in the oily waste water, the higher emulsified oil of a large amount of emulsification degrees of oiliness simultaneously, dissolved oil, the oil globule is difficult to gather and separate, the suspension solid particle becomes tiny, when current oil-water separator carries out water oil separating, ubiquitous treatment effeciency is low, the separation degree is low, equipment is bulky, area is big grade defect, thereby be difficult to low cost and handle oily waste water effectively. Meanwhile, oil pollution generated by oily wastewater has great harm to the environment and the ecology.

Disclosure of Invention

The utility model aims to provide an oil-water separation device aiming at the defects of the prior art, and the oil-water separation device can overcome the defects of low treatment efficiency, low separation degree, large equipment volume, high cost and the like of the traditional oil-water separation device.

The purpose of the utility model is realized by the following steps: the oil-water separation device comprises a filter box, wherein the upper part of the filter box is supported by a separator, the separator comprises a cylindrical cyclone cavity, the top end of the cylindrical cyclone cavity is provided with an extended overflow pipe, the overflow pipe is connected with an oil discharge pipeline, the cylindrical cyclone cavity is externally provided with a tangential jet pipe communicated with the inner cavity of the cylindrical cyclone cavity, the exposed section of the tangential jet pipe is communicated with a liquid inlet pipeline provided with a liquid supply pump, the lower port end of the cylindrical cyclone cavity is smoothly connected with the large port end of a conical pipe section, the small port end of the conical pipe section extends downwards to form a bottom flow pipe, the middle part of the filter box is provided with a liquid storage pipe, the liquid storage pipe is in sealing fit with the filter box, the liquid storage pipe is communicated with the bottom flow pipe, a plurality of coalescence filter elements are arranged in the filter box, the lower extension section of the filter box, which extends out of the liquid storage pipe, is communicated with the coalescence filter elements through coalescence pipeline, a plurality of separation filter elements are arranged in the filter box, the oil drain port of the separation filter element is connected with an oil drain pipeline, and a plurality of liquid discharge pipes are arranged at the bottom of the filter box.

And an ultrasonic transducer is arranged in the tangential jet pipe and is electrically connected with an ultrasonic generator.

The lower end of the underflow pipe is connected with a central drainage pipe, and the central drainage pipe extends downwards in the liquid storage pipe.

And a coalescence eduction tube is arranged in the liquid storage tube, a liquid inlet of the coalescence eduction tube is positioned in a gap between the central drainage tube and the liquid storage tube, and a liquid outlet of the coalescence eduction tube is connected with a coalescence pipeline.

The tube body of the central drainage tube is provided with a filter hole.

A plurality of coalescence filter cores are distributed around the liquid storage pipe ring-type, and a plurality of separation filter cores are located the annular region that a plurality of cyclic annular coalescence filter cores enclose.

Set up first wall in the rose box, first wall separates the rose box into coalescence chamber and separation chamber, the coalescence intracavity sets up the coalescence filter core, set up communicating pipe on the first wall.

The filter box is characterized in that a second partition is arranged in the filter box, an isolation cavity is formed between the second partition and the side wall of the filter box, the second partition is provided with a communicating pipe, and the bottom of the isolation cavity is provided with a liquid outlet.

The limit portion of the bottom plate of the filter box is transited to the side wall through the liquid accumulating groove.

The separation filter element and the coalescence filter element are both vertically arranged, and the centroid height of the separation filter element is higher than that of the coalescence filter element.

By adopting the scheme, the oil-water separator has the advantages that when oil-water separation is carried out, the loaded oil-water mixed liquid enters the columnar vortex cavity through the tangential jet pipe, the high-speed rotation of the oil-water mixed liquid is realized, different centrifugal forces are generated by the oil-water mixed liquid rotating at high speed by utilizing different oil-water densities, so that oil and water are separated, the water is subjected to large centrifugal force and is gathered in the four-wall area of the cyclone, the cross section of the flow channel is gradually reduced after passing through the conical pipe section, the liquid flow speed is gradually increased to form a spiral flow state, the centrifugal force applied to larger oil drops is small and is gathered in the central area of the cyclone, the bottom flow pipe diameter of the separator is small, the top of the vortex cavity is provided with an overflow port, so that a part of the separated oil drops flow to the center with lower pressure and take a spiral shape and move to the overflow pipe while rotating, so that an inner vortex is formed, and discharged from the overflow pipe; meanwhile, oil drops continuously collide with each other from small to large by virtue of kinetic energy in high-speed flow, so that the oil drops move at an accelerated speed, oil and water with different specific gravities are separated, layered and separated, and the purpose of oil-water separation is finally achieved. Meanwhile, the solid particles are under the action of centrifugal force, when the force is greater than the liquid resistance of the particles, the solid particles move to the side wall of the separator and are separated from the liquid, the solid particles are discharged from the underflow pipe along with part of the liquid, the solid particles of the underflow pipe enter the liquid storage pipe to be accumulated, solid impurities in the oil-water mixed liquid are prevented from carrying out coalescing filter elements and separating filter elements, the service life of the filter elements is prolonged, the economy of the whole device is improved, the oil-water mixture is primarily separated by the separator, the particle size of oil drops in the oil-water mixed liquid is smaller at the moment, the oil drops enter the coalescing filter elements, the oil-water mixed liquid enters the coalescing filter elements because the coalescing filter elements mainly play a role of coalescing water in the oil-water mixed liquid, the coalesced water drops gradually become larger on the surface of the coalescing filter elements, and finally settle down due to the gravity of the water, the mixed liquid after passing through the coalescing filter elements is continuously separated, namely the mixed liquid is further separated by the separating filter elements, the separating filter element mainly blocks water drops formed by coalescence of the coalescing filter element outside the separating filter element and does not enter the separating filter element along with the separated oil, and the blocked water drops gradually settle along the surface of the separating filter element and are stored at the lower part of the filter box together with other water drops settled by gravity and are discharged through a drain pipe. The utility model has compact structural arrangement, high oil-water separation degree in an oil-water mixture, energy saving effect due to kinetic energy discharged by the separator entering the filter box, greatly prolonged service life of the filter element and high economy of the whole device.

Adopt above-mentioned utility model, can avoid defect such as traditional oil water separator treatment effeciency low, separation degree is low, equipment is bulky and with high costs.

The utility model is further described with reference to the following figures and specific examples.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the drawing, 10 is a filter box, 11 is a separator, 12 is an oil discharge pipeline, 13 is a liquid inlet pipeline, 14 is a cone pipe section, 15 is an underflow pipe, 16 is a liquid storage pipe, 17 is a coalescing filter element, 19 is a coalescing pipeline, 20 is a separating filter element, 21 is a liquid discharge pipe, 22 is an ultrasonic transducer, 23 is an ultrasonic generator, 24 is a central drainage pipe, 25 is a coalescing drainage pipe, 28 is a separating filter element position, 29 is a first partition, 30 is a coalescing cavity, 31 is a separating cavity, 32 is a communicating pipe, 33 is a second partition, 34 is an isolation cavity, 36 is a liquid discharge port, 101 is a bottom plate, 102 is a liquid accumulation groove, 111 is a columnar vortex cavity, 112 is an overflow pipe, and 113 is a tangential jet pipe.

Detailed Description

Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the oil-water separation device, the oil-water separation device includes a filter box 10, a separator 11 is supported on an upper portion of the filter box 10, the separator 11 includes a cylindrical vortex chamber 111, an overflow pipe 112 extending outward is disposed at a top end of the cylindrical vortex chamber 111, the overflow pipe 112 is connected to an oil discharge pipe 12, a tangential jet pipe 113 communicating with an inner cavity of the cylindrical vortex chamber 111 is disposed outside the cylindrical vortex chamber 111, an exposed section of the tangential jet pipe 113 is communicated with an inlet pipe 13 provided with a liquid supply pump, a lower port end of the cylindrical vortex chamber 111 is smoothly connected to a large port end of a conical pipe section 14, a small port end of the conical pipe section 14 extends downward to form a bottom flow pipe 15, a liquid storage pipe 16 is disposed in a middle portion of the filter box 10, the liquid storage pipe 16 is in sealed fit with the filter box 10, the liquid storage pipe 16 is communicated with the bottom flow pipe 15, further, a lower end of the bottom flow pipe 15 is connected to a central drainage pipe 24, the central drainage tube 24 extends downwards in the liquid storage tube 16, and the oil-water mixed liquid discharged from the separator 11 is introduced into the bottom of the liquid storage tube 16 through the central drainage tube 24, so that impurities are favorably settled at the bottom of the liquid storage tube 16. The pipe body of the central drainage pipe 24 is provided with filter holes, and the pipe body of the central drainage pipe 24 is provided with filter holes, so that the central drainage pipe 24 can uniformly drain liquid. The filter box 10 is internally provided with a plurality of coalescence filter elements 17, liquid drops of oil, water and other liquid are captured by superfine fibers in a coalescer, the micron-sized fibers form a tortuous channel for airflow, solid particles and liquid fog drops are forced to be captured by the superfine fibers under the action of three filter mechanisms of inertial collision, diffusion interception and direct interception, liquid surface tension enables the liquid drops to be coalesced into larger-sized liquid drops, the large-sized liquid drops settle to the bottom due to the action of gravity, a lower extension section of the liquid storage pipe 16 extending out of the filter box 10 is communicated with the coalescence filter elements 17 through a coalescence pipeline 19, a coalescence eduction pipe 25 is arranged in the liquid storage pipe 16, a liquid inlet of the coalescence eduction pipe 25 is positioned in a gap between a central drainage pipe and the liquid storage pipe 16, a liquid outlet of the coalescence eduction pipe 25 is connected with a coalescence pipeline 19, and a higher-positioned liquid-water mixed liquid in the liquid storage pipe 16 can be educed through the coalescence eduction pipe 25, the coalescing draw off pipe 25 extends in the sump pipe 16 and requires less installation of the filtration tank 10. Set up a plurality of separation filter cores 20 in the rose box 10, separation filter core and coalescence filter core 17 all are vertical arrangement, the centroid height of separation filter core is higher than the centroid height of coalescence filter core 17, and the coalescence water droplet after 17 filters through the coalescence filter core mainly gathers in the lower part, and the part has not arrived little drop of water and oil droplet flow direction separation filter core motion that subsides, is intercepted effectively in separation filter core 20 outside, and the coalescence is big drop of water once more and subsides to effectively realize water oil separating. Separation filter core 20's oil drain port connection oil drain pipeline 12, in this embodiment, a plurality of coalescence filter cores 17 are distributed around stock solution pipe 16 ring-type, a plurality of separation filter cores are located the annular region that a plurality of cyclic annular coalescence filter cores 17 enclose, because after coalescence filter core 17 filters, the liquid drop that the part was gathered and is subsided is discharged through fluid-discharge tube 21, remaining water oil mixed liquid volume reduces, separation filter core 20 quantity can be less than coalescence filter core 17 quantity, separation filter core 20 installation space can be less than coalescence filter core 17 filter core installation space, adopt this kind of arrangement structure can improve the compactedness of structure, simultaneously can also under guaranteeing better separation effect, realize higher economic nature. A plurality of drain pipes 21 are arranged at the bottom of the filter box 10. The edge of the bottom plate 101 of the filter box 10 is transited to the side wall through the liquid accumulation groove 102, and the liquid accumulation groove 102 is arranged to enable the accumulated water drops to further settle. Can set up first wall 29 in the rose box 10, first wall 29 separates rose box 10 into coalescence chamber 30 and separation chamber 31, the coalescence intracavity sets up the coalescence filter core, set up communicating pipe 32 on the first wall 29, set up first wall 29 and filter the try hard of liquid through coalescence filter core 17 and keep laminar state, reduce turbulent flow, prevent that the oil that has separated drips and water from mixing. Furthermore, a second partition 33 is arranged in the filter tank 10, a partition cavity 34 is formed between the second partition 33 and the side wall of the filter tank 10, the second partition 33 is provided with a communicating pipe 32, the liquid passes through the second partition 33 through the communicating pipe 32, and the bottom of the partition cavity 34 is provided with a liquid outlet 36.

Preferably, an ultrasonic transducer 22 is arranged in the tangential jet pipe 113, and the ultrasonic transducer 22 is electrically connected with an ultrasonic generator 23. The ultrasonic generator and the acoustic transducer jointly convert electric energy into sound waves, the kinetic energy and the thermal motion of oil drops in the mixed liquid are increased by utilizing the particle property and the wave property of the sound waves, the density degree and the motion direction of particle clusters are changed, and the collision chance among particles is increased, so that the coalescence process is accelerated by utilizing the affinity among the same particles; the ultrasonic wave can enlarge bubble nuclei adsorbed on the particle groups, and promote the particle groups to float upwards.

When the scheme is adopted for oil-water separation, the loaded oil-water mixed liquid enters the columnar vortex cavity 111 through the tangential jet pipe 113, the centrifugal force applied to larger oil drops is small, the oil drops are coalesced in the central area of the cyclone, and a part of separated oil drops flow to the center with lower pressure and are in a spiral shape, move to the overflow pipe while rotating and are discharged from the overflow pipe; meanwhile, the oil drops continuously collide with each other by virtue of the kinetic energy during high-speed flow, and the oil drops are changed from small to large, so that the movement is accelerated, and the oil and the water with different specific gravities are divided, layered and separated. Meanwhile, the solid particles are under the action of centrifugal force, when the force is larger than the liquid resistance of the particles, the solid particles move to the side wall of the separator 11, are separated from the liquid and are discharged from the underflow pipe 15 along with part of the liquid, the solid particles of the underflow pipe 15 enter the liquid storage pipe 16 to be accumulated, solid impurities in the oil-water mixed liquid are prevented from carrying out the coalescing filter element 17 and the separation filter element, the service life of the filter element is prolonged, the economy of the whole device is improved, the oil-water mixture primarily separated by the separator 11 enters the coalescing filter element 17, the coalesced water drops are gradually enlarged on the surface of the coalescing filter element 17 and finally settle down under the action of the gravity of the water, the mixed liquid passing through the coalescing filter element 17 is continuously separated, namely the mixed liquid is further separated by the separation filter element, and the separation filter element mainly blocks the water drops coalesced by the coalescing filter element 17 from entering the separation filter element along with the separated oil, the blocked water drops gradually settle down along the surface of the separation cartridge and are stored in the lower portion of the filter tank 10 together with other water drops that settle by gravity, and are discharged through a drain pipe. The utility model has compact structure and arrangement, high oil-water separation degree in oil-water mixture, energy saving effect due to the kinetic energy discharged by the separator 11 entering the filter box 10, greatly prolonged service life of the filter element and very high economical efficiency of the whole device.

Adopt above-mentioned utility model, can avoid defect such as traditional oil water separator treatment effeciency low, separation degree is low, equipment is bulky and with high costs.

Claims (10)

1. An oil-water separation device, which is characterized in that: including rose box (10), rose box (10) upper portion supporting separator (11), separator (11) are including column whirl chamber (111), the top of column whirl chamber (111) sets up overhanging overflow pipe (112), oil drain pipe way (12) are connected to overflow pipe (112), column whirl chamber (111) sets up tangential jet pipe (113) of intercommunication column whirl chamber (111) inner chamber outward, the section that exposes of tangential jet pipe (113) and inlet pipe way (13) intercommunication that is equipped with the liquid feed pump, the macrostoma end of the smooth connection cone section of end portion (14) of end portion down of column whirl chamber (111), the osculum end downwardly extending of cone section (14) forms underflow pipe (15), the middle part of rose box (10) sets up liquid storage pipe (16), liquid storage pipe (16) and rose box (10) sealed cooperation, liquid storage pipe (16) and underflow pipe (15) intercommunication, set up a plurality of coalescence filter cores (17) in rose box (10), the section of stretching down that filter box (10) were stretched out outward in liquid storage pipe (16) passes through coalescence pipeline (19) and coalescence filter core (17) intercommunication, set up a plurality of separation filter cores (20) in rose box (10), oil drain pipe (12) are connected to the oil drain port of separation filter core (20), rose box (10) bottom sets up a plurality of fluid-discharge tubes (21).

2. The oil-water separator according to claim 1, wherein: an ultrasonic transducer (22) is arranged in the tangential jet pipe (113), and the ultrasonic transducer (22) is electrically connected with an ultrasonic generator (23).

3. The oil-water separator according to claim 1, wherein: the lower end of the underflow pipe (15) is connected with a central drainage pipe (24), and the central drainage pipe (24) extends downwards in the liquid storage pipe (16).

4. The oil-water separator according to claim 3, wherein: a coalescence eduction tube (25) is arranged in the liquid storage tube (16), a liquid inlet of the coalescence eduction tube (25) is positioned in a gap between the central drainage tube and the liquid storage tube (16), and a liquid outlet of the coalescence eduction tube (25) is connected with a coalescence pipeline (19).

5. The oil-water separator according to claim 3, wherein: the tube body of the central drainage tube (24) is provided with a filter hole.

6. The oil-water separator according to claim 1, wherein: a plurality of coalescence filter cores (17) are annularly distributed around liquid storage pipe (16), a plurality of coalescence filter cores (17) are annularly distributed around liquid storage pipe (16), and a plurality of separation filter cores are located the annular region that a plurality of annular coalescence filter cores (17) enclose.

7. The oil-water separator according to claim 6, wherein: set up first wall (29) in filter tank (10), first wall (29) separates filter tank (10) into coalescence chamber (30) and separation chamber (31), the coalescence intracavity sets up the coalescence filter core, set up communicating pipe (32) on first wall (29).

8. The oil-water separator according to claim 7, wherein: a second partition (33) is arranged in the filter box (10), an isolation cavity (34) is formed between the second partition (33) and the side wall of the filter box (10), the second partition (33) is provided with a communicating pipe (32), and a liquid discharge port (36) is arranged at the bottom of the isolation cavity (34).

9. The oil-water separator according to claim 1, wherein: the edge of the bottom plate (101) of the filter box (10) is transited to the side wall through the liquid accumulating groove (102).

10. The oil-water separation device according to claim 1, wherein: the separation filter element and the coalescence filter element (17) are both vertically arranged, and the centroid height of the separation filter element is higher than that of the coalescence filter element (17).

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