CN212609679U - Continuous coalescence and separator and continuous coalescence deoiling device - Google Patents
Continuous coalescence and separator and continuous coalescence deoiling device Download PDFInfo
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- CN212609679U CN212609679U CN202021118673.4U CN202021118673U CN212609679U CN 212609679 U CN212609679 U CN 212609679U CN 202021118673 U CN202021118673 U CN 202021118673U CN 212609679 U CN212609679 U CN 212609679U
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Abstract
The present application relates to a continuous coalescer and separator and a continuous coalescing oil removal device having a continuous coalescer and separator comprising: a plurality of coalescing media extending in a direction of fluid flow, the coalescing media being co-directionally arranged in overlying relation and having a spacing, the coalescing media having an angle of inclination with respect to a horizontal plane; the coalescence medium comprises an upper surface and a lower surface, wherein the upper surface is provided with a plurality of coalescence areas distributed along the flowing direction of the fluid, and the lower surface is made of oleophilic materials; the coalescing media is configured to allow the fluid to settle between the two coalescing media and to provide a vortex in each coalescing region in series in the direction of flow such that small oil droplets coalesce in the coalescing region to form larger oil droplets which float to the lower surface of the adjacent coalescing media for removal and the aqueous phase flows by gravity from the top to the bottom of the coalescing region. The oil removing device realizes the removal of fine oil droplets, improves the oil removing efficiency and avoids the blockage of the coalescent filler.
Description
Technical Field
The application relates to the technical field of oil-gas field produced water pressure oil removal, in particular to a continuous coalescence-separator and a continuous coalescence-oil removal device.
Background
The oil and gas field produced water treatment is one of important links in the oil and gas field development process, the produced water treatment technology is diversified to adapt to different water quality requirements, the pressure oil removal technology is one of the widely applied technologies, about 20% of the oil and gas field produced water adopts the pressure oil removal sedimentation process at present, the oil removal efficiency of the pressure oil removal process is improved, and the method has very important significance in solving the problems in the process production.
In the related technology, the pressure oil removal process mainly comprises a combination of a coalescence process and an efficient separation process. The principle is that firstly, the oily sewage is subjected to filler collision coalescence, so that fine oil droplets are changed into larger oil droplets to achieve the aim of easy separation, and the rear-end process utilizes the shallow pool theory, and an inclined plate or an inclined pipe is additionally arranged, so that the settling distance is reduced, and the settling area is increased. The inventors of the present application have found that the coalescing filler of the related art is a fibrous material or a particulate material, etc., and has a problem of clogging of the coalescing filler. In addition, the coalescence process in the related art has low oil removal efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a continuous coalescence-and-separation device and a continuous coalescence-oil removal device.
In a first aspect, the present application provides a continuous coalescer and separator comprising: a plurality of coalescing media extending in a flow direction of the fluid, the plurality of coalescing media being arranged in a co-directional overlapping arrangement with a predetermined spacing therebetween, the coalescing media having a predetermined inclination angle with respect to a horizontal plane, the fluid comprising an oil phase and an aqueous phase; wherein the coalescing media comprises an upper surface and a lower surface, wherein the upper surface has a plurality of coalescing zones distributed along a direction of flow of the fluid, and the lower surface is an oleophilic material; wherein the coalescing media is configured to allow the fluid to settle between the coalescing media and to provide a vortex in each coalescing zone in series with the direction of flow such that small oil droplets coalesce in the coalescing zone to form larger oil droplets which float to the lower surface of the adjacent coalescing media for removal and the aqueous phase flows by gravity from the top to the bottom of the coalescing zone.
In certain embodiments, the coalescing zones are separated by baffles disposed on the upper surface, the baffles extending along the top of the coalescing media toward the bottom.
In certain embodiments, the lower surface of the accumulation zone is a smooth flat surface.
In some embodiments, the predetermined tilt angle is an angle between a lower surface of the accumulation region and a horizontal plane, and the angle is 60 °.
In certain embodiments, the coalescing media has a spacing L between an upper surface and a lower surface of an adjacent coalescing media, the coalescing zone has a depth of 2/3L, and the coalescing zone has a width of 1.5L.
In a second aspect, the present application provides a continuous coalescing oil removal apparatus comprising: the continuous coalescence-separation device comprises an inlet unit, a rectification unit, a continuous coalescence-separation device, an oil collection unit and a water outlet unit, wherein fluid flows through the continuous coalescence-separation device after being rectified by the rectification unit, and the continuous coalescence-separation device comprises: a plurality of coalescing media extending in a flow direction of the fluid, the plurality of coalescing media being arranged in a co-directional overlapping arrangement with a predetermined spacing therebetween, the coalescing media having a predetermined inclination angle with respect to a horizontal plane, the fluid comprising an oil phase and an aqueous phase; wherein the coalescing media comprises an upper surface and a lower surface, wherein the upper surface has a plurality of coalescing zones distributed along a direction of flow of the fluid, and the lower surface is an oleophilic material; the top of the condensation area is communicated with the oil collecting unit, and the bottom of the condensation area is communicated with the water outlet unit; wherein the coalescing media is configured to cause the fluid to settle between the two coalescing media and to form a vortex in each coalescing region in series with the direction of flow such that small oil droplets coalesce in the coalescing region to form larger oil droplets which float to the lower surface of an adjacent coalescing media for removal and entry into the oil collection unit; and the aqueous phase flows from the top to the bottom of the coalescing zone under the force of gravity and is discharged through a water discharge unit.
In certain embodiments, the coalescing zones are separated by baffles disposed on the upper surface, the baffles extending along the top of the coalescing media toward the bottom.
In certain embodiments, the lower surface of the coalescing media is smooth and planar.
In certain embodiments, the predetermined inclination angle is an angle of the lower surface of the coalescing media to a horizontal plane, and the angle is 60 °.
In certain embodiments, the coalescing media has a spacing L between an upper surface and a lower surface of an adjacent coalescing media, the coalescing zone has a depth of 2/3L, and the coalescing zone has a width of 1.5L.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the technical scheme provided by the embodiment of the application, a plurality of coalescence areas distributed along the flow direction of the fluid are arranged on the upper surface of the coalescence medium, and the coalescence medium is arranged in an overlapping mode in the same direction and has a preset distance. The fluid is caused to swirl successively in its respective coalescing zones in the direction of flow so that small oil droplets coalesce in the coalescing zones to form larger oil droplets which float to the lower surface of the adjacent coalescing media for removal and the aqueous phase flows by gravity from the top to the bottom of the coalescing zones. Thus, by continuously coalescing and separating while coalescing, removal of fine oil droplets is achieved, thereby improving oil removal efficiency and avoiding clogging of the coalescing packing in the related art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a top view of one embodiment of a continuous coalescer and separator provided in embodiments of the present application;
FIG. 2 is a side view of one embodiment of a continuous coalescer and separator provided in embodiments of the present application;
fig. 3 is a schematic structural diagram of an embodiment of a continuous coalescing oil removal apparatus provided in an embodiment of the present application.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning by themselves. Thus, "module", "component" or "unit" may be used mixedly.
Fig. 1 and 2 are a plan view and a side view, respectively, of an embodiment of a continuous coalescer and separator 1 according to an embodiment of the present application, shown with reference to fig. 1 and 2, and including: a plurality of coalescing media (10 a, 10b, and 10c) extending in a flow direction 14 of the fluid, the plurality of coalescing media 10a, 10b, and 10c arranged in a co-directional overlapping arrangement with a predetermined spacing therebetween, the coalescing media 10a, 10b, and 10c having a predetermined inclination angle α with respect to horizontal. The coalescing media includes an upper surface 11 and a lower surface 12, wherein the upper surface 11 has a plurality of coalescing zones (labeled 13a to 13k in the drawings) distributed along a flow direction 14 of the fluid and the lower surface 12 is an oleophilic material.
In the embodiment of the subject application, the coalescing media causes the fluid to settle between the two coalescing media and to form a vortex 15 in each coalescing section in succession in the direction of flow 14, such that small oil droplets coalesce in the coalescing section to form larger oil droplets which float to the lower surface 12 of the adjacent coalescing media for removal, and the aqueous phase flows by gravity from the top 131 to the bottom 132 of the coalescing section. Referring to fig. 1 and 2, the fluid coalesces in the plurality of coalescing zones 13a through 13k of the coalescing media 10b to form larger oil droplets that float to the lower surface 12 of the coalescing media 10a for removal.
It is noted that the coalescing media is shown in fig. 1 and 2 as 10a, 10b, and 10c, and the coalescing zones are shown in fig. 1 and 2 as 13a through 13k, with the coalescing media representing at least one of 10a, 10b, and 10c and the coalescing zones representing at least one of 13a through 13k, unless otherwise noted. It should be understood that although a specific number of coalescing media and coalescing regions are shown in fig. 1 and 2, this is not a limitation on the number and that in embodiments of the present application, there may be more or fewer coalescing media and coalescing regions and embodiments of the present application are not limited thereto.
In certain embodiments, the fluid is oily wastewater, wherein the oily wastewater comprises oil-bearing crude oil and other impurities. In certain embodiments, the fluid comprises an oil phase and an aqueous phase. In some embodiments, the fluid also contains solid particulates such as silt.
In certain embodiments, the coalescing media 10a, 10b, and 10c are plate-like, extending in the direction of fluid flow, forming a continuous coalescing and separation stage from upstream to downstream of the fluid.
In the embodiment of the present application, the depth of the poly region is H, the width is S, and the length is M. Wherein, the depth H is the length of the upper surface 11 in the vertical direction, the width S is the length of the fluid in the flow direction, and the length M is the length of the accumulation region from the top to the bottom. In certain embodiments, the top-to-bottom direction of the coalescing zone is perpendicular to the direction of flow 14 of the fluid, but is not so limited.
In certain embodiments, the coalescing zones are separated by baffles 111 disposed on the upper surface 11, the baffles 111 extending along the top 131 toward the bottom 132 of the coalescing media. In certain embodiments, the top 131 and/or bottom 132 of the coalescing region is an opening. The gathering area is a space with a rectangular cross section. It should be understood that the embodiments of the present application are not so limited and that other shaped spaces are possible, as long as a space having a depth above the upper surface 11 of the coalescing media is contemplated.
In certain embodiments, the lower surface 12 of the coalescing media is smooth and planar.
In certain embodiments, the predetermined inclination angle is the angle α of the lower surface 12 of the coalescing media from horizontal, and the angle α is 60 °.
In certain embodiments, referring to FIGS. 1 and 2, the upper surface 11 of the coalescing media is spaced L from the lower surface 12 of the adjacent coalescing media, the depth H of the coalescing region is 2/3L, and the width S of the coalescing region is 1.5L.
Fig. 3 is a schematic structural diagram of an embodiment of a continuous coalescing oil removal device according to an embodiment of the present application, and the continuous coalescing oil removal device according to the embodiment of the present application is described with reference to fig. 1 to 3 by taking a horizontal pressure coalescing oil removal device as an example, as shown in fig. 3.
Referring to fig. 3, the continuous coalescing oil removing apparatus 100 according to the embodiment of the present application includes a continuous coalescing and separating unit 1 (shown in fig. 1 and 2): the device comprises an inlet unit 2, a rectifying unit 3, an oil collecting unit 4 and a water outlet unit 5, wherein fluid flows through a continuous coalescence-separation device 1 after being rectified by the rectifying unit 3, oil and water are separated from the continuous coalescence-separation device 1, a water phase enters the water outlet unit 5, and an oil phase enters the oil collecting unit 4.
In certain embodiments, the fluid also includes other impurities (e.g., silt, etc.). Referring to fig. 3, the continuous coalescing oil removing apparatus further includes a sludge collecting unit 6. In some embodiments, referring to fig. 3, a water outlet baffle 7 is arranged between the sludge collecting unit 6 and the water outlet unit 5.
In some embodiments, referring to fig. 3, the oil collecting unit 4 is disposed at the top of the continuous coalescing oil removing device 100, and the water discharging unit 5 and the sludge collecting unit 6 are disposed at the bottom of the continuous coalescing oil removing device 100. The water outlet unit 5 is arranged downstream of the continuous coalescer and separator 1. The water outlet baffle 7 is arranged between the water outlet unit 5 and the sludge collecting unit 6.
Referring to fig. 1-3, in a continuous coalescer and separator device 1, coalescing media are arranged so that fluid settles between the two coalescing media and forms a vortex 15 in each coalescing zone 13 a-13 k thereof in succession in the direction of flow 14, so that small oil droplets coalesce in the coalescing zone to form larger oil droplets which float to the lower surface 12 of the adjacent coalescing media for removal, and the aqueous phase flows by gravity from the top 131 to the bottom 132 of the coalescing zone. Referring to fig. 1 and 2, the fluid coalesces in the multiple coalescing regions of the coalescing media 10b to form larger droplets of oil that float to the lower surface 12 of the coalescing media 10a for removal and entry into the oil collection unit 4; and the aqueous phase flows under gravity from the top 131 to the bottom 132 of the coalescing zone and is discharged through the outlet unit 5.
It should be understood that the continuous coalescer and separator 1 is described in detail herein with reference to the previous description.
In some embodiments, the inlet unit 2 is a baffle type inlet or a butterfly type inlet, which is not limited by the embodiments of the present application, and the inlet unit 2 can be referred to in the related art.
In some embodiments, the rectifier unit 3 is configured to stabilize the fluid flow pattern, eliminating or mitigating channeling, short-circuit flow, and eddy current in the flow field. The rectifying unit 3 is a grid type or a perforated plate type, which is not limited in the embodiment of the present application.
In some embodiments, the continuous coalescence deoiling device 100 or the continuous coalescence-separation device 1 thereof adopts non-metal corrosion-resistant materials to ensure the service life and provide technical support for the treatment of the produced water of the oil and gas field.
Through the embodiment of the application, a plurality of coalescence areas distributed along the flowing direction of the fluid are arranged on the upper surface of the coalescence medium, and the coalescence medium is arranged in a same direction and overlapped with a preset space. The fluid is caused to swirl successively in its respective coalescing zones in the direction of flow so that small oil droplets coalesce in the coalescing zones to form larger oil droplets which float to the lower surface of the adjacent coalescing media for removal and the aqueous phase flows by gravity from the top to the bottom of the coalescing zones. Thus, by continuously coalescing and separating while coalescing, removal of fine oil droplets is achieved, thereby improving oil removal efficiency and avoiding clogging of the coalescing packing in the related art.
According to the technical scheme of the embodiment of the application, the continuous coalescence, the continuous oil removal technology and the whole non-metallic material are adopted, the problems of coalescence filler blockage, equipment corrosion, poor impact viewing capability and the like in the treatment of the produced water of the oil and gas field are solved, the oil removal efficiency is improved, and the oil removal efficiency can reach more than 95%. Has good application prospect and good economic benefit in the field of produced water of oil and gas fields.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A continuous coalescer and separator, comprising:
a plurality of coalescing media extending in a flow direction of a fluid, the plurality of coalescing media being arranged in a co-directional overlapping arrangement with a predetermined spacing therebetween, the coalescing media having a predetermined inclination angle with respect to a horizontal plane, the fluid comprising an oil phase and an aqueous phase;
wherein the coalescing media comprises an upper surface and a lower surface, wherein the upper surface has a plurality of coalescing zones distributed along a flow direction of the fluid and the lower surface is an oleophilic material;
wherein the coalescing media is configured to allow fluid to settle between the coalescing media and to form a vortex in each coalescing zone in series in the direction of flow such that small oil droplets coalesce in the coalescing zone to form larger oil droplets which float to the lower surface of adjacent coalescing media for removal and the aqueous phase flows from the top to the bottom of the coalescing zone under the influence of gravity.
2. The continuous coalescer according to claim 1, wherein the coalescing zone is separated by a baffle disposed in the upper surface, the baffle extending along the top of the coalescing media toward the bottom.
3. The continuous coalescer according to claim 1 or 2, wherein the lower surface is smooth and planar.
4. The continuous coalescer according to claim 1 or 2, wherein the predetermined angle of inclination is the angle between the lower surface and the horizontal plane, and the angle is 60 °.
5. The continuous coalescer and separator of claim 1 or 2, wherein the coalescing media has an upper surface spaced from an adjacent lower surface by a distance L, the coalescing zone has a depth of 2/3L, and the coalescing zone has a width of 1.5L.
6. A continuous coalescing oil removal device, comprising: the continuous coalescence-separation device comprises an inlet unit, a rectification unit, a continuous coalescence-separation device, an oil collection unit and a water outlet unit, wherein fluid flows through the continuous coalescence-separation device after being rectified by the rectification unit, and the continuous coalescence-separation device comprises:
a plurality of coalescing media extending in a flow direction of a fluid, the plurality of coalescing media being arranged in a co-directional overlapping arrangement with a predetermined spacing therebetween, the coalescing media having a predetermined inclination angle with respect to a horizontal plane, the fluid comprising an oil phase and an aqueous phase;
wherein the coalescing media comprises an upper surface and a lower surface, wherein the upper surface has a plurality of coalescing zones distributed along a flow direction of the fluid and the lower surface is an oleophilic material; the top of the condensation area is communicated with the oil collecting unit, and the bottom of the condensation area is communicated with the water outlet unit;
wherein the coalescing media is configured to allow fluid to settle between the coalescing media and to form a vortex in each coalescing zone in series with the direction of flow, such that small oil droplets coalesce in the coalescing zone to form larger oil droplets, which float to the lower surface of an adjacent coalescing media for removal and entry into the oil collection unit; and the water phase flows from the top to the bottom of the condensation area under the action of gravity and is discharged through the water outlet unit.
7. The continuous coalescing oil removal device of claim 6, wherein the coalescing zone is separated by a baffle disposed on the upper surface, the baffle extending along a top to a bottom of the coalescing media.
8. The continuous coalescing oil removal device of claim 6 or 7, wherein the lower surface is a smooth flat surface.
9. The continuous coalescing oil removal device according to claim 6 or 7, wherein the preset inclination angle is an included angle between the lower surface and a horizontal plane, and the included angle is 60 °.
10. The continuous coalescing oil removal device of claim 6 or 7, wherein the coalescing media has an upper surface spaced from an adjacent lower surface of the coalescing media by a distance L, the coalescing zone has a depth of 2/3L, and the coalescing zone has a width of 1.5L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021118673.4U CN212609679U (en) | 2020-06-16 | 2020-06-16 | Continuous coalescence and separator and continuous coalescence deoiling device |
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| CN202021118673.4U CN212609679U (en) | 2020-06-16 | 2020-06-16 | Continuous coalescence and separator and continuous coalescence deoiling device |
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| CN212609679U true CN212609679U (en) | 2021-02-26 |
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