CN212924912U - External circulation heating crude oil sedimentation purification system - Google Patents
External circulation heating crude oil sedimentation purification system Download PDFInfo
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- CN212924912U CN212924912U CN202120064502.6U CN202120064502U CN212924912U CN 212924912 U CN212924912 U CN 212924912U CN 202120064502 U CN202120064502 U CN 202120064502U CN 212924912 U CN212924912 U CN 212924912U
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Abstract
The utility model relates to a crude oil purification separation technical field. In order to solve among the prior art water-containing oil need heat the oil-water mixture when the heat treatment before the electric dehydration, thereby lead to the great problem of energy consumption, the utility model provides an extrinsic cycle heating crude oil sedimentation clean system, including the three-phase separator who communicates each other and subside purifier, water-containing oil is arranged to the clean oil intracavity after three-phase separator preliminary separation, carries out water oil separating once more at the clean oil intracavity afterwards, and upper crude oil then gets into the electric dehydration intracavity, through total oil outlet pipeline output, partly exports through purifying oil outlet pipeline outward, and another part gets into to purify backflow pipeline adjustment temperature after and flows back to the clean oil intracavity. Through the arrangement of the purification backflow pipeline, only the crude oil after deep dehydration is used as a heat transfer medium, and heat is transferred to the crude oil in the oil purification cavity after the crude oil flows back to the oil purification cavity. The utility model is suitable for a need the heating to realize oil-water separation's crude oil treatment technology, reducible energy consumption.
Description
Technical Field
The utility model relates to a crude oil purification separation technical field specifically is an extrinsic cycle heating crude oil subsides clean system.
Background
The crude oil produced from a wellhead to a united station in an oil field is mostly mixed transportation of oil, gas and water, so that the crude oil produced needs to be separated for many times to remove non-oil impurities such as water, gas and the like mixed in the crude oil. The electric dehydration technology is a treatment process for deep dehydration of low-water-content crude oil after thermochemical settling dehydration or separation by a three-phase separator, and has the advantages of high dehydration speed and low water content of purified oil. Before the electric dehydration is carried out, the crude oil which is primarily separated and still contains a large amount of water needs to be heated and adjusted to a proper temperature, so that the stability of the crude oil is reduced, and the electric dehydration treatment can be better carried out. However, in the existing heating process, crude oil which is primarily separated but still contains a large amount of water is integrally heated, and then the crude oil is subjected to electric dehydration treatment by an oil-water separation facility, so that the treatment process is long, the mixed unsettled sewage in the crude oil must be heated while the oil temperature is increased, the specific heat of water is large, the energy consumption is increased in the heating process, and the heat load is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an extrinsic cycle heating crude oil subsides clean system, the crude oil after will purifying purifies crude oil through the heating as heating medium, carries out the matter heat transfer at the oil reservoir, reduces the heat load, reduces the energy consumption, promotes the crude oil separation effect.
In order to achieve the above object, the utility model provides a following technical scheme: an external circulation heating crude oil sedimentation purification system comprises a three-phase separator and a sedimentation purification device; the upper end of the three-phase separator is provided with a mixture inlet and a gas outlet, and the interior of the three-phase separator is divided into an oil-water cavity and a crude oil cavity which are communicated at the upper sides by a weir plate; the sedimentation purification device is internally provided with a water purification cavity, an oil purification cavity and an electric dehydration cavity; the bottom of the oil-water cavity is communicated with the top of the water purifying cavity through a first manifold, the bottom of the crude oil cavity is communicated with the top of the water purifying cavity through a second manifold, and the water purifying cavity is communicated with the electric dehydration cavity through a hot oil pipeline; a pulse electric field dehydration device is arranged in the electric dehydration cavity; the upper end intercommunication in electric dehydration chamber has total oil pipe line, the terminal branch of total oil pipe forms the purification return line and purifies out the oil pipe line, it has circulating pump and oil temperature regulator to connect gradually on the return line to purify, the end intercommunication of return line purifies the top in the oil purification chamber. By arranging the purification reflux branch pipeline, part of the low-water-content purified crude oil after the electric dehydration treatment is subjected to temperature adjustment by the oil temperature adjuster and then is refluxed to the oil purification cavity to be used as a heat transfer medium for heating the upper crude oil in the oil purification cavity, so that the energy consumption is reduced, and the heat exchange efficiency is improved.
Preferably, a crude oil distributor is arranged inside the oil purification chamber and communicated with the second header, so that crude oil discharged from the second header can be uniformly distributed in the oil purification chamber.
Preferably, an overflow partition plate with an open upper end is arranged on the upper side in the oil purification cavity, the length of the overflow partition plate is smaller than that of the oil purification cavity, and a gap for crude oil to flow into is reserved between the upper end of the overflow partition plate and the upper end of the oil purification cavity. In the overflow cavity that the crude oil accessible overflow baffle's top and the clearance of the clean oil chamber upper end got into the overflow baffle formation subsided after the purification in the clean oil chamber, the setting of overflow baffle can collect the purification crude oil on upper strata better.
As optimization, the overflow partition plate and the crude oil distributor are arranged in a staggered mode in the horizontal direction, and the situation that crude oil discharged by the crude oil distributor enters an overflow cavity formed by the overflow partition plate to influence the collection effect of the overflow partition plate on the crude oil on the upper layer is avoided.
As optimization, the hot oil pipeline is positioned outside the sedimentation purification device, two ends of the hot oil pipeline are respectively communicated with the tops of the oil purification cavity and the electric dehydration cavity, and the hot oil pipeline is arranged outside and can be conveniently overhauled.
And as optimization, the hot oil pipeline is positioned in the sedimentation purification device, and two ends of the hot oil pipeline are respectively positioned in an overflow cavity and an electric dehydration cavity formed by the overflow partition plate, so that crude oil input into the electric dehydration cavity through the internal oil pipeline is ensured to be upper crude oil collected by the overflow partition plate.
Preferably, the hot oil pipeline is positioned above an overflow cavity formed by the overflow partition plate, so that crude oil input into the electric dehydration cavity through the external oil pipeline is ensured to be upper crude oil collected by the overflow partition plate.
As optimization, the side wall of the overflow baffle plate close to one side of the electric dehydration cavity is integrally arranged on the inner wall between the oil purification cavity and the electric dehydration cavity, so that the crude oil on the upper layer collected by the overflow baffle plate can be conveniently and directly discharged into the electric dehydration cavity, the moving distance of the crude oil is reduced, and heat loss is avoided.
As optimization, the bottom of the water purification cavity, the bottom of the oil purification cavity and the bottom of the electric dehydration cavity are provided with water outlet pipes, so that settled sewage can be discharged in time.
Preferably, the three-phase separator is internally provided with a baffle plate which is arranged close to the mixture inlet so as to generate a turbulent action on the gas.
Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides an extrinsic cycle adds heat crude oil and subsides clean system, through setting up purifying the backflow pipeline, regard purified crude oil after the degree of depth dehydration as heat transfer medium, adjust the temperature of the preceding aqueous crude oil of electrical dehydration, reduced unnecessary energy consumption, when having reduced the heat load, can produce better economic benefits; the utility model discloses simple structure, reasonable in design, convenient and practical both had been applicable to general crude oil treatment heating technology, was applicable to the station yard of skid-mounted processing again.
Drawings
FIG. 1 is a schematic front view of the overall structure of the present invention;
FIG. 2 is a schematic view of the sedimentation purification apparatus of the present invention;
fig. 3 is a schematic front view of a sedimentation purification apparatus according to a second embodiment of the present invention.
The system comprises a three-phase separator 1, a sedimentation purification device 2, a mixture inlet 3, a gas outlet 4, a gas outlet 5, a weir plate 6, an oil-water cavity 7, a crude oil cavity 8, a purified water cavity 9, a purified oil cavity 10, an electric dehydration cavity 11, a first manifold 12, a second manifold 13, a hot oil pipeline 14, a pulse electric field dehydration device 15, a total oil outlet pipeline 16, a purification return pipeline 17, a purification oil outlet pipeline 18, a circulating pump 19, an oil temperature regulator 20, a crude oil distributor 21, an overflow partition plate 22, an water outlet pipe 23, a baffle plate 24 and an overflow 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
as shown in fig. 1 and 2, an external circulation heating crude oil sedimentation purification system comprises a three-phase separator 1 and a sedimentation purification device 2. The upper end of three-phase separator 1 is provided with mixture entry 3 and gas outlet, and in the mixture of oil gas water got into three-phase separator 1 through mixture entry 3, gas can be discharged through gas outlet 4. The interior of the three-phase separator 1 is divided into an oil-water cavity 6 and a crude oil cavity 7 which are communicated with each other at the upper sides by a weir plate 5, and crude oil can overflow from the oil-water cavity 6 and enter the crude oil cavity 7 through the weir plate 5. The interior of the sedimentation purification device 2 is provided with a purified water cavity 8, a purified oil cavity 9 and an electric dehydration cavity 10, the bottom of the oil-water cavity 6 is communicated with the top of the purified water cavity 8 through a first collecting pipe 11, so that the settled sewage enters the purified water cavity 8 of the sedimentation purification device 2; the bottom of the oil chamber 7 is communicated with the top of the oil-purifying chamber 9 through a second header 12, so that the crude oil in the oil chamber 7 enters the oil-purifying chamber 9 for subsequent treatment. The oil purification chamber 9 is communicated with the electric dehydration chamber 10 through a hot oil pipeline 13, and a pulse electric field dehydration device 14 is arranged in the electric dehydration chamber 10, so that crude oil discharged into the oil purification chamber 9 can enter the electric dehydration chamber 10 through the hot oil pipeline 13 for dehydration treatment. The upper end of the electric dehydration cavity 10 is communicated with a main oil outlet pipeline 15, the tail end of the main oil outlet pipe is branched to form a purification return pipeline 16 and a purification oil outlet pipeline 17, after the purified crude oil which is deeply dehydrated in the electric dehydration cavity 10 passes through the main oil outlet pipeline 15, one part of the purified crude oil is output through the purification oil outlet pipeline 17, and the other part of the purified crude oil enters the purification return pipeline 16 to be used as a heat transfer medium. The purification return pipeline 16 is sequentially connected with a circulating pump 18 and an oil temperature regulator 19 to heat crude oil as a heat transfer medium, and the tail end of the purification return pipeline 16 is communicated with the top of the oil purification cavity 9, so that the heated deep-dewatering crude oil enters the oil purification cavity 9, heat is transferred to the crude oil in the oil purification cavity 9, and the temperature of the crude oil in the oil purification cavity 9 is regulated.
As shown in fig. 1, in order to ensure that the crude oil flowing into the clean oil chamber 9 from the second header 12 is uniformly distributed in the clean oil chamber 9, and improve the oil-water separation efficiency, a crude oil distributor 20 is disposed inside the clean oil chamber 9, and the crude oil distributor 20 is communicated with the second header 12.
As shown in fig. 1 and 2, an overflow partition plate 21 with an open upper end is arranged on the upper side in the oil purification chamber 9, the length of the overflow partition plate 21 is smaller than that of the oil purification chamber 9, a gap for crude oil to flow in is reserved between the upper end of the overflow partition plate 21 and the upper end of the oil purification chamber 9, the overflow partition plate 21 can better collect the crude oil on the upper layer, and prevent the settled water from mixing into the crude oil on the upper layer, two ends of the hot oil pipeline 13 are respectively located in an overflow cavity 24 and an electric dehydration chamber 10 formed by the overflow partition plate 21, and the side wall of the overflow partition plate 21 close to one side of the electric dehydration chamber 10 is integrally arranged on the inner wall between the oil purification chamber 9 and the electric dehydration chamber 10. Crude oil can flow into an overflow cavity 24 formed by the overflow partition plate 21 through a gap between the overflow partition plate 21 and the upper side of the oil purifying cavity 9, so that purified upper crude oil can be collected conveniently.
As shown in fig. 2, the overflow partition 21 and the crude oil distributor 20 are arranged in a staggered manner in the horizontal direction, so that the crude oil containing water discharged from the crude oil distributor 20 can be prevented from directly entering the overflow cavity 24 formed by the overflow partition 21, and the collection effect of the overflow partition 21 on the crude oil on the upper layer is reduced.
As shown in fig. 1, the hot oil line 13 is located outside the sedimentation purification device 2, and both ends of the hot oil line 13 are respectively communicated with the tops of the oil purification chamber 9 and the electric dehydration chamber 10. The hot oil pipeline 13 is used for conveying the crude oil with the adjusted temperature into the electric dehydration cavity 10 for subsequent electric dehydration treatment, and the hot oil pipeline 13 is arranged outside so as to be convenient to overhaul and maintain.
As shown in fig. 2, in order to ensure that the crude oil fed into the electric dehydration chamber 10 by the oil feed line is the upper crude oil collected by the overflow barrier 21, the hot oil line 13 is disposed above the overflow cavity 24 formed by the overflow barrier 21, so that the crude oil fed into the electric dehydration chamber 10 is the upper crude oil collected by the overflow cavity 24 of the overflow barrier 21.
As shown in fig. 1, the water purifying cavity 8, the oil purifying cavity 9 and the electric dewatering cavity 10 are provided at the bottom thereof with water outlet pipes 22 for discharging the sewage settled to the lower layer in time.
As shown in fig. 1, the three-phase separator 1 is provided with a baffle 23 inside, and the baffle 23 is disposed near the mixture inlet 3 to disturb the moving path of the gas, thereby separating the gas more effectively.
Example two:
as shown in fig. 3, the second embodiment of the present invention is different from the first embodiment only in that the hot oil line 13 is located inside the sedimentation purification apparatus 2, and both ends of the hot oil line 13 are respectively located in the overflow cavity 24 and the electric dehydration cavity 10 formed by the overflow partition 21, so that the transportation distance of the crude oil from the clean oil cavity 9 to the electric dehydration cavity 10 can be further shortened, and the function of preventing heat dissipation is achieved.
The working principle is as follows: the utility model provides a pair of outer circulation heating crude oil subsides clean system, when using, carry out preliminary separation in the mixture of oil gas water 3 input three phase separator 1 through the mixture entry, gaseous 4 separation away from three phase separator 1 via gas outlet, the oil water mixture produces the layering in profit chamber 6, the crude oil that is located the upper strata then crosses weir plate 5 and enters into crude oil chamber 7, input to the clean oil chamber 9 of subsiding purifier 2 through second manifold 12 afterwards, after further oil water separation, be located the crude oil of upper strata overflow to the overflow cavity 24 that overflow baffle 21 formed, carry out dehydration to the electro-dewatering intracavity 10 in through hot oil pipeline 13 afterwards. The purified crude oil after deep dehydration is output by a main oil outlet pipeline 15, one part of the crude oil after deep dehydration is output by a purified oil outlet pipeline 17, the other small part of the crude oil after deep dehydration enters a purified return pipeline 16, the temperature of the crude oil is regulated by an oil temperature regulator 19 and then returns to the oil purification cavity 9 to be used as a heat transfer medium for transferring heat, the crude oil on the upper layer of the oil purification cavity 9 is heated, the crude oil after temperature rise is continuously conveyed to the electric dehydration cavity 10 through a hot oil pipeline 13 for deep dehydration, and the operation is repeated in a circulating way.
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. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides an extrinsic cycle heating crude oil subsides clean system which characterized in that: comprises a three-phase separator and a sedimentation purification device; the upper end of the three-phase separator is provided with a mixture inlet and a gas outlet, and the interior of the three-phase separator is divided into an oil-water cavity and a crude oil cavity which are communicated at the upper sides by a weir plate; the sedimentation purification device is internally provided with a water purification cavity, an oil purification cavity and an electric dehydration cavity; the bottom of the oil-water cavity is communicated with the top of the water purifying cavity through a first manifold, the bottom of the crude oil cavity is communicated with the top of the water purifying cavity through a second manifold, and the water purifying cavity is communicated with the electric dehydration cavity through a hot oil pipeline; a pulse electric field dehydration device is arranged in the electric dehydration cavity; the upper end intercommunication in electric dehydration chamber has total oil pipe line, the terminal branch of total oil pipe forms the purification return line and purifies out the oil pipe line, it has circulating pump and oil temperature regulator to connect gradually on the return line to purify, the end intercommunication of return line purifies the top in the oil purification chamber.
2. The external circulation heated crude oil sedimentation purification system according to claim 1, wherein: and a crude oil distributor is arranged in the oil purification cavity and communicated with the second header.
3. The external circulation heated crude oil sedimentation purification system according to claim 2, wherein: the upper side in the clean oil cavity is provided with an overflow partition plate with an open upper end, the length of the overflow partition plate is smaller than that of the clean oil cavity, and a gap for crude oil to flow into is reserved between the upper end of the overflow partition plate and the upper end of the clean oil cavity.
4. The external circulation heated crude oil sedimentation purification system according to claim 3, wherein: the overflow partition plate and the crude oil distributor are arranged in a staggered mode in the horizontal direction.
5. The external circulation heated crude oil sedimentation purification system according to claim 4, wherein: the hot oil pipeline is positioned outside the sedimentation purification device, and two ends of the hot oil pipeline are respectively communicated with the tops of the oil purifying cavity and the electric dehydration cavity.
6. The external circulation heated crude oil sedimentation purification system according to claim 4, wherein: the hot oil pipeline is positioned in the sedimentation purification device, and two ends of the hot oil pipeline are respectively positioned in an overflow cavity and an electric dehydration cavity formed by the overflow partition plate.
7. The external circulation heated crude oil sedimentation purification system according to claim 5, wherein: the hot oil line is positioned above an overflow cavity formed by the overflow baffle.
8. The external circulation heated crude oil sedimentation purification system according to claim 6 or 7, wherein: the side wall of the overflow baffle plate, which is close to one side of the electric dehydration cavity, is integrally arranged on the inner wall between the oil purification cavity and the electric dehydration cavity.
9. The external circulation heated crude oil sedimentation purification system according to claim 1, wherein: and water outlet pipes are arranged at the bottoms of the water purification cavity, the oil purification cavity and the electric dehydration cavity.
10. The external circulation heated crude oil sedimentation purification system according to claim 1, wherein: the inside of three-phase separator is provided with the baffle, the baffle is close to mixture entry setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120064502.6U CN212924912U (en) | 2021-01-12 | 2021-01-12 | External circulation heating crude oil sedimentation purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120064502.6U CN212924912U (en) | 2021-01-12 | 2021-01-12 | External circulation heating crude oil sedimentation purification system |
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| Publication Number | Publication Date |
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| CN212924912U true CN212924912U (en) | 2021-04-09 |
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| CN202120064502.6U Active CN212924912U (en) | 2021-01-12 | 2021-01-12 | External circulation heating crude oil sedimentation purification system |
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| CN (1) | CN212924912U (en) |
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- 2021-01-12 CN CN202120064502.6U patent/CN212924912U/en active Active
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